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<title>dist-ghc/build/Network/Socket.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LINE 1 "Network/Socket.hsc" #-}</span>
<a name="line-2"></a><span class='hs-comment'>{-# LANGUAGE CPP, ScopedTypeVariables #-}</span>
<a name="line-3"></a><span class='hs-comment'>{-# LINE 2 "Network/Socket.hsc" #-}</span>
<a name="line-4"></a><span class='hs-comment'>{-# OPTIONS_GHC -fno-warn-orphans #-}</span>
<a name="line-5"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-6"></a><span class='hs-comment'>-- |</span>
<a name="line-7"></a><span class='hs-comment'>-- Module : Network.Socket</span>
<a name="line-8"></a><span class='hs-comment'>-- Copyright : (c) The University of Glasgow 2001</span>
<a name="line-9"></a><span class='hs-comment'>-- License : BSD-style (see the file libraries/network/LICENSE)</span>
<a name="line-10"></a><span class='hs-comment'>--</span>
<a name="line-11"></a><span class='hs-comment'>-- Maintainer : libraries@haskell.org</span>
<a name="line-12"></a><span class='hs-comment'>-- Stability : provisional</span>
<a name="line-13"></a><span class='hs-comment'>-- Portability : portable</span>
<a name="line-14"></a><span class='hs-comment'>--</span>
<a name="line-15"></a><span class='hs-comment'>-- The "Network.Socket" module is for when you want full control over</span>
<a name="line-16"></a><span class='hs-comment'>-- sockets. Essentially the entire C socket API is exposed through</span>
<a name="line-17"></a><span class='hs-comment'>-- this module; in general the operations follow the behaviour of the C</span>
<a name="line-18"></a><span class='hs-comment'>-- functions of the same name (consult your favourite Unix networking book).</span>
<a name="line-19"></a><span class='hs-comment'>--</span>
<a name="line-20"></a><span class='hs-comment'>-- A higher level interface to networking operations is provided</span>
<a name="line-21"></a><span class='hs-comment'>-- through the module "Network".</span>
<a name="line-22"></a><span class='hs-comment'>--</span>
<a name="line-23"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-24"></a>
<a name="line-25"></a>
<a name="line-26"></a><span class='hs-comment'>{-# LINE 24 "Network/Socket.hsc" #-}</span>
<a name="line-27"></a>
<a name="line-28"></a><span class='hs-comment'>-- In order to process this file, you need to have CALLCONV defined.</span>
<a name="line-29"></a>
<a name="line-30"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Network</span><span class='hs-varop'>.</span><span class='hs-conid'>Socket</span>
<a name="line-31"></a> <span class='hs-layout'>(</span>
<a name="line-32"></a> <span class='hs-comment'>-- * Types</span>
<a name="line-33"></a> <span class='hs-conid'>Socket</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-34"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Family</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-35"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>isSupportedFamily</span>
<a name="line-36"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>SocketType</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-37"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>isSupportedSocketType</span>
<a name="line-38"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>SockAddr</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-39"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>isSupportedSockAddr</span>
<a name="line-40"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>SocketStatus</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-41"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>HostAddress</span>
<a name="line-42"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>hostAddressToTuple</span>
<a name="line-43"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>tupleToHostAddress</span>
<a name="line-44"></a>
<a name="line-45"></a><span class='hs-comment'>{-# LINE 42 "Network/Socket.hsc" #-}</span>
<a name="line-46"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>HostAddress6</span>
<a name="line-47"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>hostAddress6ToTuple</span>
<a name="line-48"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>tupleToHostAddress6</span>
<a name="line-49"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>FlowInfo</span>
<a name="line-50"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>ScopeID</span>
<a name="line-51"></a>
<a name="line-52"></a><span class='hs-comment'>{-# LINE 48 "Network/Socket.hsc" #-}</span>
<a name="line-53"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>htonl</span>
<a name="line-54"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>ntohl</span>
<a name="line-55"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>ShutdownCmd</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-56"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>ProtocolNumber</span>
<a name="line-57"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>defaultProtocol</span>
<a name="line-58"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>PortNumber</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-59"></a> <span class='hs-comment'>-- PortNumber is used non-abstractly in Network.BSD. ToDo: remove</span>
<a name="line-60"></a> <span class='hs-comment'>-- this use and make the type abstract.</span>
<a name="line-61"></a>
<a name="line-62"></a> <span class='hs-comment'>-- * Address operations</span>
<a name="line-63"></a>
<a name="line-64"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>HostName</span>
<a name="line-65"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>ServiceName</span>
<a name="line-66"></a>
<a name="line-67"></a>
<a name="line-68"></a><span class='hs-comment'>{-# LINE 63 "Network/Socket.hsc" #-}</span>
<a name="line-69"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>AddrInfo</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-70"></a>
<a name="line-71"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>AddrInfoFlag</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-72"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>addrInfoFlagImplemented</span>
<a name="line-73"></a>
<a name="line-74"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>defaultHints</span>
<a name="line-75"></a>
<a name="line-76"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getAddrInfo</span>
<a name="line-77"></a>
<a name="line-78"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>NameInfoFlag</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-79"></a>
<a name="line-80"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getNameInfo</span>
<a name="line-81"></a>
<a name="line-82"></a><span class='hs-comment'>{-# LINE 76 "Network/Socket.hsc" #-}</span>
<a name="line-83"></a>
<a name="line-84"></a> <span class='hs-comment'>-- * Socket operations</span>
<a name="line-85"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>socket</span>
<a name="line-86"></a>
<a name="line-87"></a><span class='hs-comment'>{-# LINE 80 "Network/Socket.hsc" #-}</span>
<a name="line-88"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>socketPair</span>
<a name="line-89"></a>
<a name="line-90"></a><span class='hs-comment'>{-# LINE 82 "Network/Socket.hsc" #-}</span>
<a name="line-91"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>connect</span>
<a name="line-92"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>bind</span>
<a name="line-93"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>listen</span>
<a name="line-94"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>accept</span>
<a name="line-95"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getPeerName</span>
<a name="line-96"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getSocketName</span>
<a name="line-97"></a>
<a name="line-98"></a>
<a name="line-99"></a><span class='hs-comment'>{-# LINE 90 "Network/Socket.hsc" #-}</span>
<a name="line-100"></a> <span class='hs-comment'>-- get the credentials of our domain socket peer.</span>
<a name="line-101"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getPeerCred</span>
<a name="line-102"></a>
<a name="line-103"></a><span class='hs-comment'>{-# LINE 95 "Network/Socket.hsc" #-}</span>
<a name="line-104"></a>
<a name="line-105"></a><span class='hs-comment'>{-# LINE 96 "Network/Socket.hsc" #-}</span>
<a name="line-106"></a>
<a name="line-107"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>socketPort</span>
<a name="line-108"></a>
<a name="line-109"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>socketToHandle</span>
<a name="line-110"></a>
<a name="line-111"></a> <span class='hs-comment'>-- ** Sending and receiving data</span>
<a name="line-112"></a> <span class='hs-comment'>-- *** Sending and receiving with String</span>
<a name="line-113"></a> <span class='hs-comment'>-- $sendrecv</span>
<a name="line-114"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>send</span>
<a name="line-115"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sendTo</span>
<a name="line-116"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>recv</span>
<a name="line-117"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>recvFrom</span>
<a name="line-118"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>recvLen</span>
<a name="line-119"></a>
<a name="line-120"></a> <span class='hs-comment'>-- *** Sending and receiving with a buffer</span>
<a name="line-121"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sendBuf</span>
<a name="line-122"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>recvBuf</span>
<a name="line-123"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sendBufTo</span>
<a name="line-124"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>recvBufFrom</span>
<a name="line-125"></a>
<a name="line-126"></a> <span class='hs-comment'>-- ** Misc</span>
<a name="line-127"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>inet_addr</span>
<a name="line-128"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>inet_ntoa</span>
<a name="line-129"></a>
<a name="line-130"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>shutdown</span>
<a name="line-131"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>close</span>
<a name="line-132"></a>
<a name="line-133"></a> <span class='hs-comment'>-- ** Predicates on sockets</span>
<a name="line-134"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>isConnected</span>
<a name="line-135"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>isBound</span>
<a name="line-136"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>isListening</span>
<a name="line-137"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>isReadable</span>
<a name="line-138"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>isWritable</span>
<a name="line-139"></a>
<a name="line-140"></a> <span class='hs-comment'>-- * Socket options</span>
<a name="line-141"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>SocketOption</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-142"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>isSupportedSocketOption</span>
<a name="line-143"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>getSocketOption</span>
<a name="line-144"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>setSocketOption</span>
<a name="line-145"></a>
<a name="line-146"></a> <span class='hs-comment'>-- * File descriptor transmission</span>
<a name="line-147"></a>
<a name="line-148"></a><span class='hs-comment'>{-# LINE 138 "Network/Socket.hsc" #-}</span>
<a name="line-149"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sendFd</span>
<a name="line-150"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>recvFd</span>
<a name="line-151"></a>
<a name="line-152"></a>
<a name="line-153"></a><span class='hs-comment'>{-# LINE 142 "Network/Socket.hsc" #-}</span>
<a name="line-154"></a>
<a name="line-155"></a> <span class='hs-comment'>-- * Special constants</span>
<a name="line-156"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>aNY_PORT</span>
<a name="line-157"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>iNADDR_ANY</span>
<a name="line-158"></a>
<a name="line-159"></a><span class='hs-comment'>{-# LINE 147 "Network/Socket.hsc" #-}</span>
<a name="line-160"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>iN6ADDR_ANY</span>
<a name="line-161"></a>
<a name="line-162"></a><span class='hs-comment'>{-# LINE 149 "Network/Socket.hsc" #-}</span>
<a name="line-163"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sOMAXCONN</span>
<a name="line-164"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sOL_SOCKET</span>
<a name="line-165"></a>
<a name="line-166"></a><span class='hs-comment'>{-# LINE 152 "Network/Socket.hsc" #-}</span>
<a name="line-167"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sCM_RIGHTS</span>
<a name="line-168"></a>
<a name="line-169"></a><span class='hs-comment'>{-# LINE 154 "Network/Socket.hsc" #-}</span>
<a name="line-170"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>maxListenQueue</span>
<a name="line-171"></a>
<a name="line-172"></a> <span class='hs-comment'>-- * Initialisation</span>
<a name="line-173"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>withSocketsDo</span>
<a name="line-174"></a>
<a name="line-175"></a> <span class='hs-comment'>-- * Very low level operations</span>
<a name="line-176"></a> <span class='hs-comment'>-- in case you ever want to get at the underlying file descriptor..</span>
<a name="line-177"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>fdSocket</span>
<a name="line-178"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>mkSocket</span>
<a name="line-179"></a>
<a name="line-180"></a> <span class='hs-comment'>-- * Deprecated aliases</span>
<a name="line-181"></a> <span class='hs-comment'>-- $deprecated-aliases</span>
<a name="line-182"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>bindSocket</span>
<a name="line-183"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sClose</span>
<a name="line-184"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sIsConnected</span>
<a name="line-185"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sIsBound</span>
<a name="line-186"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sIsListening</span>
<a name="line-187"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sIsReadable</span>
<a name="line-188"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>sIsWritable</span>
<a name="line-189"></a>
<a name="line-190"></a> <span class='hs-comment'>-- * Internal</span>
<a name="line-191"></a>
<a name="line-192"></a> <span class='hs-comment'>-- | The following are exported ONLY for use in the BSD module and</span>
<a name="line-193"></a> <span class='hs-comment'>-- should not be used anywhere else.</span>
<a name="line-194"></a>
<a name="line-195"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>packFamily</span>
<a name="line-196"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>unpackFamily</span>
<a name="line-197"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>packSocketType</span>
<a name="line-198"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-199"></a>
<a name="line-200"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Bits</span>
<a name="line-201"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Functor</span>
<a name="line-202"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span> <span class='hs-layout'>(</span><span class='hs-varid'>foldl'</span><span class='hs-layout'>)</span>
<a name="line-203"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-varid'>isJust</span><span class='hs-layout'>)</span>
<a name="line-204"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Word</span> <span class='hs-layout'>(</span><span class='hs-conid'>Word8</span><span class='hs-layout'>,</span> <span class='hs-conid'>Word32</span><span class='hs-layout'>)</span>
<a name="line-205"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>Ptr</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span><span class='hs-layout'>,</span> <span class='hs-varid'>castPtr</span><span class='hs-layout'>,</span> <span class='hs-varid'>nullPtr</span><span class='hs-layout'>)</span>
<a name="line-206"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>Storable</span> <span class='hs-layout'>(</span><span class='hs-conid'>Storable</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-207"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-conid'>Error</span>
<a name="line-208"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-conid'>String</span> <span class='hs-layout'>(</span><span class='hs-conid'>CString</span><span class='hs-layout'>,</span> <span class='hs-varid'>withCString</span><span class='hs-layout'>,</span> <span class='hs-varid'>withCStringLen</span><span class='hs-layout'>,</span> <span class='hs-varid'>peekCString</span><span class='hs-layout'>,</span> <span class='hs-varid'>peekCStringLen</span><span class='hs-layout'>)</span>
<a name="line-209"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span> <span class='hs-layout'>(</span><span class='hs-conid'>CUInt</span><span class='hs-layout'>,</span> <span class='hs-conid'>CChar</span><span class='hs-layout'>)</span>
<a name="line-210"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span> <span class='hs-layout'>(</span><span class='hs-conid'>CInt</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>CSize</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-211"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>Marshal</span><span class='hs-varop'>.</span><span class='hs-conid'>Alloc</span> <span class='hs-layout'>(</span> <span class='hs-varid'>alloca</span><span class='hs-layout'>,</span> <span class='hs-varid'>allocaBytes</span> <span class='hs-layout'>)</span>
<a name="line-212"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>Marshal</span><span class='hs-varop'>.</span><span class='hs-conid'>Array</span> <span class='hs-layout'>(</span> <span class='hs-varid'>peekArray</span> <span class='hs-layout'>)</span>
<a name="line-213"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>Marshal</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span> <span class='hs-layout'>(</span> <span class='hs-varid'>maybeWith</span><span class='hs-layout'>,</span> <span class='hs-varid'>with</span> <span class='hs-layout'>)</span>
<a name="line-214"></a>
<a name="line-215"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span>
<a name="line-216"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span> <span class='hs-layout'>(</span><span class='hs-varid'>liftM</span><span class='hs-layout'>,</span> <span class='hs-varid'>when</span><span class='hs-layout'>)</span>
<a name="line-217"></a>
<a name="line-218"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Concurrent</span><span class='hs-varop'>.</span><span class='hs-conid'>MVar</span>
<a name="line-219"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Typeable</span>
<a name="line-220"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Error</span>
<a name="line-221"></a>
<a name="line-222"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>Conc</span> <span class='hs-layout'>(</span><span class='hs-varid'>threadWaitRead</span><span class='hs-layout'>,</span> <span class='hs-varid'>threadWaitWrite</span><span class='hs-layout'>)</span>
<a name="line-223"></a><span class='hs-cpp'>#if MIN_VERSION_base(4,3,1)</span>
<a name="line-224"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>Conc</span> <span class='hs-layout'>(</span><span class='hs-varid'>closeFdWith</span><span class='hs-layout'>)</span>
<a name="line-225"></a><span class='hs-cpp'>#endif</span>
<a name="line-226"></a>
<a name="line-227"></a><span class='hs-comment'>{-# LINE 216 "Network/Socket.hsc" #-}</span>
<a name="line-228"></a>
<a name="line-229"></a><span class='hs-comment'>{-# LINE 219 "Network/Socket.hsc" #-}</span>
<a name="line-230"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Device</span>
<a name="line-231"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Handle</span><span class='hs-varop'>.</span><span class='hs-conid'>FD</span>
<a name="line-232"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Exception</span>
<a name="line-233"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span>
<a name="line-234"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Posix</span><span class='hs-varop'>.</span><span class='hs-conid'>Internals</span>
<a name="line-235"></a>
<a name="line-236"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Network</span><span class='hs-varop'>.</span><span class='hs-conid'>Socket</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span>
<a name="line-237"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Network</span><span class='hs-varop'>.</span><span class='hs-conid'>Socket</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span>
<a name="line-238"></a>
<a name="line-239"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Prelude</span> <span class='hs-comment'>-- Silence AMP warnings</span>
<a name="line-240"></a>
<a name="line-241"></a><a name="HostName"></a><span class='hs-comment'>-- | Either a host name e.g., @\"haskell.org\"@ or a numeric host</span>
<a name="line-242"></a><a name="HostName"></a><span class='hs-comment'>-- address string consisting of a dotted decimal IPv4 address or an</span>
<a name="line-243"></a><a name="HostName"></a><span class='hs-comment'>-- IPv6 address e.g., @\"192.168.0.1\"@.</span>
<a name="line-244"></a><a name="HostName"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>HostName</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>String</span>
<a name="line-245"></a><a name="ServiceName"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>ServiceName</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>String</span>
<a name="line-246"></a>
<a name="line-247"></a><span class='hs-comment'>-- ----------------------------------------------------------------------------</span>
<a name="line-248"></a><span class='hs-comment'>-- On Windows, our sockets are not put in non-blocking mode (non-blocking</span>
<a name="line-249"></a><span class='hs-comment'>-- is not supported for regular file descriptors on Windows, and it would</span>
<a name="line-250"></a><span class='hs-comment'>-- be a pain to support it only for sockets). So there are two cases:</span>
<a name="line-251"></a><span class='hs-comment'>--</span>
<a name="line-252"></a><span class='hs-comment'>-- - the threaded RTS uses safe calls for socket operations to get</span>
<a name="line-253"></a><span class='hs-comment'>-- non-blocking I/O, just like the rest of the I/O library</span>
<a name="line-254"></a><span class='hs-comment'>--</span>
<a name="line-255"></a><span class='hs-comment'>-- - with the non-threaded RTS, only some operations on sockets will be</span>
<a name="line-256"></a><span class='hs-comment'>-- non-blocking. Reads and writes go through the normal async I/O</span>
<a name="line-257"></a><span class='hs-comment'>-- system. accept() uses asyncDoProc so is non-blocking. A handful</span>
<a name="line-258"></a><span class='hs-comment'>-- of others (recvFrom, sendFd, recvFd) will block all threads - if this</span>
<a name="line-259"></a><span class='hs-comment'>-- is a problem, -threaded is the workaround.</span>
<a name="line-260"></a><span class='hs-comment'>--</span>
<a name="line-261"></a><span class='hs-cpp'>#if defined(mingw32_HOST_OS)</span>
<a name="line-262"></a><span class='hs-cpp'>#define SAFE_ON_WIN safe</span>
<a name="line-263"></a><span class='hs-cpp'>#else</span>
<a name="line-264"></a><span class='hs-cpp'>#define SAFE_ON_WIN unsafe</span>
<a name="line-265"></a><span class='hs-cpp'>#endif</span>
<a name="line-266"></a>
<a name="line-267"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-268"></a><span class='hs-comment'>-- Socket types</span>
<a name="line-269"></a>
<a name="line-270"></a>
<a name="line-271"></a><span class='hs-comment'>{-# LINE 264 "Network/Socket.hsc" #-}</span>
<a name="line-272"></a>
<a name="line-273"></a><a name="mkSocket"></a><span class='hs-definition'>mkSocket</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span>
<a name="line-274"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Family</span>
<a name="line-275"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SocketType</span>
<a name="line-276"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ProtocolNumber</span>
<a name="line-277"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SocketStatus</span>
<a name="line-278"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Socket</span>
<a name="line-279"></a><span class='hs-definition'>mkSocket</span> <span class='hs-varid'>fd</span> <span class='hs-varid'>fam</span> <span class='hs-varid'>sType</span> <span class='hs-varid'>pNum</span> <span class='hs-varid'>stat</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-280"></a> <span class='hs-varid'>mStat</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newMVar</span> <span class='hs-varid'>stat</span>
<a name="line-281"></a> <span class='hs-varid'>withSocketsDo</span> <span class='hs-varop'>$</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-282"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-varid'>fd</span> <span class='hs-varid'>fam</span> <span class='hs-varid'>sType</span> <span class='hs-varid'>pNum</span> <span class='hs-varid'>mStat</span><span class='hs-layout'>)</span>
<a name="line-283"></a>
<a name="line-284"></a>
<a name="line-285"></a><a name="fdSocket"></a><span class='hs-definition'>fdSocket</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span>
<a name="line-286"></a><span class='hs-definition'>fdSocket</span> <span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-varid'>fd</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fd</span>
<a name="line-287"></a>
<a name="line-288"></a><a name="defaultProtocol"></a><span class='hs-comment'>-- | This is the default protocol for a given service.</span>
<a name="line-289"></a><span class='hs-definition'>defaultProtocol</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ProtocolNumber</span>
<a name="line-290"></a><span class='hs-definition'>defaultProtocol</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-291"></a>
<a name="line-292"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-293"></a><span class='hs-comment'>-- SockAddr</span>
<a name="line-294"></a>
<a name="line-295"></a><a name="instance%20Show%20SockAddr"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Show</span> <span class='hs-conid'>SockAddr</span> <span class='hs-keyword'>where</span>
<a name="line-296"></a>
<a name="line-297"></a><span class='hs-comment'>{-# LINE 289 "Network/Socket.hsc" #-}</span>
<a name="line-298"></a> <span class='hs-varid'>showsPrec</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-conid'>SockAddrUnix</span> <span class='hs-varid'>str</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>showString</span> <span class='hs-varid'>str</span>
<a name="line-299"></a>
<a name="line-300"></a><span class='hs-comment'>{-# LINE 291 "Network/Socket.hsc" #-}</span>
<a name="line-301"></a> <span class='hs-varid'>showsPrec</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-conid'>SockAddrInet</span> <span class='hs-varid'>port</span> <span class='hs-varid'>ha</span><span class='hs-layout'>)</span>
<a name="line-302"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>showString</span> <span class='hs-layout'>(</span><span class='hs-varid'>unsafePerformIO</span> <span class='hs-layout'>(</span><span class='hs-varid'>inet_ntoa</span> <span class='hs-varid'>ha</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-303"></a> <span class='hs-varop'>.</span> <span class='hs-varid'>showString</span> <span class='hs-str'>":"</span>
<a name="line-304"></a> <span class='hs-varop'>.</span> <span class='hs-varid'>shows</span> <span class='hs-varid'>port</span>
<a name="line-305"></a>
<a name="line-306"></a><span class='hs-comment'>{-# LINE 296 "Network/Socket.hsc" #-}</span>
<a name="line-307"></a> <span class='hs-varid'>showsPrec</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>addr</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>SockAddrInet6</span> <span class='hs-varid'>port</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span>
<a name="line-308"></a> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>showChar</span> <span class='hs-chr'>'['</span>
<a name="line-309"></a> <span class='hs-varop'>.</span> <span class='hs-varid'>showString</span> <span class='hs-layout'>(</span><span class='hs-varid'>unsafePerformIO</span> <span class='hs-varop'>$</span>
<a name="line-310"></a> <span class='hs-varid'>fst</span> <span class='hs-varop'>`liftM`</span> <span class='hs-varid'>getNameInfo</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>NI_NUMERICHOST</span><span class='hs-keyglyph'>]</span> <span class='hs-conid'>True</span> <span class='hs-conid'>False</span> <span class='hs-varid'>addr</span> <span class='hs-varop'>>>=</span>
<a name="line-311"></a> <span class='hs-varid'>maybe</span> <span class='hs-layout'>(</span><span class='hs-varid'>fail</span> <span class='hs-str'>"showsPrec: impossible internal error"</span><span class='hs-layout'>)</span> <span class='hs-varid'>return</span><span class='hs-layout'>)</span>
<a name="line-312"></a> <span class='hs-varop'>.</span> <span class='hs-varid'>showString</span> <span class='hs-str'>"]:"</span>
<a name="line-313"></a> <span class='hs-varop'>.</span> <span class='hs-varid'>shows</span> <span class='hs-varid'>port</span>
<a name="line-314"></a>
<a name="line-315"></a><span class='hs-comment'>{-# LINE 304 "Network/Socket.hsc" #-}</span>
<a name="line-316"></a>
<a name="line-317"></a><span class='hs-comment'>{-# LINE 305 "Network/Socket.hsc" #-}</span>
<a name="line-318"></a> <span class='hs-varid'>showsPrec</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-conid'>SockAddrCan</span> <span class='hs-varid'>ifidx</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>shows</span> <span class='hs-varid'>ifidx</span>
<a name="line-319"></a>
<a name="line-320"></a><span class='hs-comment'>{-# LINE 307 "Network/Socket.hsc" #-}</span>
<a name="line-321"></a>
<a name="line-322"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-323"></a><span class='hs-comment'>-- Connection Functions</span>
<a name="line-324"></a>
<a name="line-325"></a><span class='hs-comment'>-- In the following connection and binding primitives. The names of</span>
<a name="line-326"></a><span class='hs-comment'>-- the equivalent C functions have been preserved where possible. It</span>
<a name="line-327"></a><span class='hs-comment'>-- should be noted that some of these names used in the C library,</span>
<a name="line-328"></a><span class='hs-comment'>-- \tr{bind} in particular, have a different meaning to many Haskell</span>
<a name="line-329"></a><span class='hs-comment'>-- programmers and have thus been renamed by appending the prefix</span>
<a name="line-330"></a><span class='hs-comment'>-- Socket.</span>
<a name="line-331"></a>
<a name="line-332"></a><a name="socket"></a><span class='hs-comment'>-- | Create a new socket using the given address family, socket type</span>
<a name="line-333"></a><span class='hs-comment'>-- and protocol number. The address family is usually 'AF_INET',</span>
<a name="line-334"></a><span class='hs-comment'>-- 'AF_INET6', or 'AF_UNIX'. The socket type is usually 'Stream' or</span>
<a name="line-335"></a><span class='hs-comment'>-- 'Datagram'. The protocol number is usually 'defaultProtocol'.</span>
<a name="line-336"></a><span class='hs-comment'>-- If 'AF_INET6' is used and the socket type is 'Stream' or 'Datagram',</span>
<a name="line-337"></a><span class='hs-comment'>-- the 'IPv6Only' socket option is set to 0 so that both IPv4 and IPv6</span>
<a name="line-338"></a><span class='hs-comment'>-- can be handled with one socket.</span>
<a name="line-339"></a><span class='hs-comment'>--</span>
<a name="line-340"></a><span class='hs-comment'>-- >>> let hints = defaultHints { addrFlags = [AI_NUMERICHOST, AI_NUMERICSERV], addrSocketType = Stream }</span>
<a name="line-341"></a><span class='hs-comment'>-- >>> addr:_ <- getAddrInfo (Just hints) (Just "127.0.0.1") (Just "5000")</span>
<a name="line-342"></a><span class='hs-comment'>-- >>> sock@(MkSocket _ fam stype _ _) <- socket (addrFamily addr) (addrSocketType addr) (addrProtocol addr)</span>
<a name="line-343"></a><span class='hs-comment'>-- >>> fam</span>
<a name="line-344"></a><span class='hs-comment'>-- AF_INET</span>
<a name="line-345"></a><span class='hs-comment'>-- >>> stype</span>
<a name="line-346"></a><span class='hs-comment'>-- Stream</span>
<a name="line-347"></a><span class='hs-comment'>-- >>> bind sock (addrAddress addr)</span>
<a name="line-348"></a><span class='hs-comment'>-- >>> getSocketName sock</span>
<a name="line-349"></a><span class='hs-comment'>-- 127.0.0.1:5000</span>
<a name="line-350"></a><span class='hs-definition'>socket</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Family</span> <span class='hs-comment'>-- Family Name (usually AF_INET)</span>
<a name="line-351"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SocketType</span> <span class='hs-comment'>-- Socket Type (usually Stream)</span>
<a name="line-352"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ProtocolNumber</span> <span class='hs-comment'>-- Protocol Number (getProtocolByName to find value)</span>
<a name="line-353"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Socket</span> <span class='hs-comment'>-- Unconnected Socket</span>
<a name="line-354"></a><span class='hs-definition'>socket</span> <span class='hs-keyword'>family</span> <span class='hs-varid'>stype</span> <span class='hs-varid'>protocol</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-355"></a> <span class='hs-varid'>c_stype</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>packSocketTypeOrThrow</span> <span class='hs-str'>"socket"</span> <span class='hs-varid'>stype</span>
<a name="line-356"></a> <span class='hs-varid'>fd</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>throwSocketErrorIfMinus1Retry</span> <span class='hs-str'>"socket"</span> <span class='hs-varop'>$</span>
<a name="line-357"></a> <span class='hs-varid'>c_socket</span> <span class='hs-layout'>(</span><span class='hs-varid'>packFamily</span> <span class='hs-keyword'>family</span><span class='hs-layout'>)</span> <span class='hs-varid'>c_stype</span> <span class='hs-varid'>protocol</span>
<a name="line-358"></a> <span class='hs-varid'>setNonBlockIfNeeded</span> <span class='hs-varid'>fd</span>
<a name="line-359"></a> <span class='hs-varid'>socket_status</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newMVar</span> <span class='hs-conid'>NotConnected</span>
<a name="line-360"></a> <span class='hs-varid'>withSocketsDo</span> <span class='hs-varop'>$</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-361"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>sock</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>MkSocket</span> <span class='hs-varid'>fd</span> <span class='hs-keyword'>family</span> <span class='hs-varid'>stype</span> <span class='hs-varid'>protocol</span> <span class='hs-varid'>socket_status</span>
<a name="line-362"></a>
<a name="line-363"></a><span class='hs-comment'>{-# LINE 349 "Network/Socket.hsc" #-}</span>
<a name="line-364"></a> <span class='hs-comment'>-- The default value of the IPv6Only option is platform specific,</span>
<a name="line-365"></a> <span class='hs-comment'>-- so we explicitly set it to 0 to provide a common default.</span>
<a name="line-366"></a>
<a name="line-367"></a><span class='hs-comment'>{-# LINE 357 "Network/Socket.hsc" #-}</span>
<a name="line-368"></a> <span class='hs-varid'>when</span> <span class='hs-layout'>(</span><span class='hs-keyword'>family</span> <span class='hs-varop'>==</span> <span class='hs-conid'>AF_INET6</span> <span class='hs-varop'>&&</span> <span class='hs-layout'>(</span><span class='hs-varid'>stype</span> <span class='hs-varop'>==</span> <span class='hs-conid'>Stream</span> <span class='hs-varop'>||</span> <span class='hs-varid'>stype</span> <span class='hs-varop'>==</span> <span class='hs-conid'>Datagram</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-369"></a> <span class='hs-varid'>setSocketOption</span> <span class='hs-varid'>sock</span> <span class='hs-conid'>IPv6Only</span> <span class='hs-num'>0</span> <span class='hs-varop'>`onException`</span> <span class='hs-varid'>close</span> <span class='hs-varid'>sock</span>
<a name="line-370"></a>
<a name="line-371"></a><span class='hs-comment'>{-# LINE 360 "Network/Socket.hsc" #-}</span>
<a name="line-372"></a>
<a name="line-373"></a><span class='hs-comment'>{-# LINE 361 "Network/Socket.hsc" #-}</span>
<a name="line-374"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>sock</span>
<a name="line-375"></a>
<a name="line-376"></a><span class='hs-comment'>-- | Build a pair of connected socket objects using the given address</span>
<a name="line-377"></a><span class='hs-comment'>-- family, socket type, and protocol number. Address family, socket</span>
<a name="line-378"></a><span class='hs-comment'>-- type, and protocol number are as for the 'socket' function above.</span>
<a name="line-379"></a><span class='hs-comment'>-- Availability: Unix.</span>
<a name="line-380"></a>
<a name="line-381"></a><a name="socketPair"></a><span class='hs-comment'>{-# LINE 368 "Network/Socket.hsc" #-}</span>
<a name="line-382"></a><span class='hs-definition'>socketPair</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Family</span> <span class='hs-comment'>-- Family Name (usually AF_INET or AF_INET6)</span>
<a name="line-383"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SocketType</span> <span class='hs-comment'>-- Socket Type (usually Stream)</span>
<a name="line-384"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ProtocolNumber</span> <span class='hs-comment'>-- Protocol Number</span>
<a name="line-385"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Socket</span><span class='hs-layout'>,</span> <span class='hs-conid'>Socket</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- unnamed and connected.</span>
<a name="line-386"></a><span class='hs-definition'>socketPair</span> <span class='hs-keyword'>family</span> <span class='hs-varid'>stype</span> <span class='hs-varid'>protocol</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-387"></a> <span class='hs-varid'>allocaBytes</span> <span class='hs-layout'>(</span><span class='hs-num'>2</span> <span class='hs-varop'>*</span> <span class='hs-varid'>sizeOf</span> <span class='hs-layout'>(</span><span class='hs-num'>1</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span> <span class='hs-varid'>fdArr</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-388"></a> <span class='hs-varid'>c_stype</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>packSocketTypeOrThrow</span> <span class='hs-str'>"socketPair"</span> <span class='hs-varid'>stype</span>
<a name="line-389"></a> <span class='hs-sel'>_rc</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>throwSocketErrorIfMinus1Retry</span> <span class='hs-str'>"socketpair"</span> <span class='hs-varop'>$</span>
<a name="line-390"></a> <span class='hs-varid'>c_socketpair</span> <span class='hs-layout'>(</span><span class='hs-varid'>packFamily</span> <span class='hs-keyword'>family</span><span class='hs-layout'>)</span> <span class='hs-varid'>c_stype</span> <span class='hs-varid'>protocol</span> <span class='hs-varid'>fdArr</span>
<a name="line-391"></a> <span class='hs-keyglyph'>[</span><span class='hs-varid'>fd1</span><span class='hs-layout'>,</span><span class='hs-varid'>fd2</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>peekArray</span> <span class='hs-num'>2</span> <span class='hs-varid'>fdArr</span>
<a name="line-392"></a> <span class='hs-varid'>s1</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mkNonBlockingSocket</span> <span class='hs-varid'>fd1</span>
<a name="line-393"></a> <span class='hs-varid'>s2</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mkNonBlockingSocket</span> <span class='hs-varid'>fd2</span>
<a name="line-394"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>s1</span><span class='hs-layout'>,</span><span class='hs-varid'>s2</span><span class='hs-layout'>)</span>
<a name="line-395"></a> <span class='hs-keyword'>where</span>
<a name="line-396"></a> <span class='hs-varid'>mkNonBlockingSocket</span> <span class='hs-varid'>fd</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-397"></a> <span class='hs-varid'>setNonBlockIfNeeded</span> <span class='hs-varid'>fd</span>
<a name="line-398"></a> <span class='hs-varid'>stat</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newMVar</span> <span class='hs-conid'>Connected</span>
<a name="line-399"></a> <span class='hs-varid'>withSocketsDo</span> <span class='hs-varop'>$</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-400"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-varid'>fd</span> <span class='hs-keyword'>family</span> <span class='hs-varid'>stype</span> <span class='hs-varid'>protocol</span> <span class='hs-varid'>stat</span><span class='hs-layout'>)</span>
<a name="line-401"></a>
<a name="line-402"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"socketpair"</span>
<a name="line-403"></a> <span class='hs-varid'>c_socketpair</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-404"></a>
<a name="line-405"></a><span class='hs-comment'>{-# LINE 391 "Network/Socket.hsc" #-}</span>
<a name="line-406"></a>
<a name="line-407"></a><a name="setNonBlockIfNeeded"></a><span class='hs-comment'>-- | Set the socket to nonblocking, if applicable to this platform.</span>
<a name="line-408"></a><span class='hs-definition'>setNonBlockIfNeeded</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-409"></a><span class='hs-definition'>setNonBlockIfNeeded</span> <span class='hs-varid'>fd</span> <span class='hs-keyglyph'>=</span>
<a name="line-410"></a> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Posix</span><span class='hs-varop'>.</span><span class='hs-conid'>Internals</span><span class='hs-varop'>.</span><span class='hs-varid'>setNonBlockingFD</span> <span class='hs-varid'>fd</span> <span class='hs-conid'>True</span>
<a name="line-411"></a>
<a name="line-412"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-413"></a><span class='hs-comment'>-- Binding a socket</span>
<a name="line-414"></a>
<a name="line-415"></a><a name="bind"></a><span class='hs-comment'>-- | Bind the socket to an address. The socket must not already be</span>
<a name="line-416"></a><span class='hs-comment'>-- bound. The 'Family' passed to @bind@ must be the</span>
<a name="line-417"></a><span class='hs-comment'>-- same as that passed to 'socket'. If the special port number</span>
<a name="line-418"></a><span class='hs-comment'>-- 'aNY_PORT' is passed then the system assigns the next available</span>
<a name="line-419"></a><span class='hs-comment'>-- use port.</span>
<a name="line-420"></a><span class='hs-definition'>bind</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-comment'>-- Unconnected Socket</span>
<a name="line-421"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SockAddr</span> <span class='hs-comment'>-- Address to Bind to</span>
<a name="line-422"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-423"></a><span class='hs-definition'>bind</span> <span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-varid'>s</span> <span class='hs-sel'>_family</span> <span class='hs-sel'>_stype</span> <span class='hs-sel'>_protocol</span> <span class='hs-varid'>socketStatus</span><span class='hs-layout'>)</span> <span class='hs-varid'>addr</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-424"></a> <span class='hs-varid'>modifyMVar_</span> <span class='hs-varid'>socketStatus</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span> <span class='hs-varid'>status</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-425"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>status</span> <span class='hs-varop'>/=</span> <span class='hs-conid'>NotConnected</span>
<a name="line-426"></a> <span class='hs-keyword'>then</span>
<a name="line-427"></a> <span class='hs-varid'>ioError</span> <span class='hs-layout'>(</span><span class='hs-varid'>userError</span> <span class='hs-layout'>(</span><span class='hs-str'>"bind: can't peform bind on socket in status "</span> <span class='hs-varop'>++</span>
<a name="line-428"></a> <span class='hs-varid'>show</span> <span class='hs-varid'>status</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-429"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-430"></a> <span class='hs-varid'>withSockAddr</span> <span class='hs-varid'>addr</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p_addr</span> <span class='hs-varid'>sz</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-431"></a> <span class='hs-sel'>_status</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>throwSocketErrorIfMinus1Retry</span> <span class='hs-str'>"bind"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>c_bind</span> <span class='hs-varid'>s</span> <span class='hs-varid'>p_addr</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>sz</span><span class='hs-layout'>)</span>
<a name="line-432"></a> <span class='hs-varid'>return</span> <span class='hs-conid'>Bound</span>
<a name="line-433"></a>
<a name="line-434"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-435"></a><span class='hs-comment'>-- Connecting a socket</span>
<a name="line-436"></a>
<a name="line-437"></a><a name="connect"></a><span class='hs-comment'>-- | Connect to a remote socket at address.</span>
<a name="line-438"></a><span class='hs-definition'>connect</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-comment'>-- Unconnected Socket</span>
<a name="line-439"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SockAddr</span> <span class='hs-comment'>-- Socket address stuff</span>
<a name="line-440"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-441"></a><span class='hs-definition'>connect</span> <span class='hs-varid'>sock</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-varid'>s</span> <span class='hs-sel'>_family</span> <span class='hs-sel'>_stype</span> <span class='hs-sel'>_protocol</span> <span class='hs-varid'>socketStatus</span><span class='hs-layout'>)</span> <span class='hs-varid'>addr</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withSocketsDo</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-442"></a> <span class='hs-varid'>modifyMVar_</span> <span class='hs-varid'>socketStatus</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>currentStatus</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-443"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>currentStatus</span> <span class='hs-varop'>/=</span> <span class='hs-conid'>NotConnected</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>currentStatus</span> <span class='hs-varop'>/=</span> <span class='hs-conid'>Bound</span>
<a name="line-444"></a> <span class='hs-keyword'>then</span>
<a name="line-445"></a> <span class='hs-varid'>ioError</span> <span class='hs-layout'>(</span><span class='hs-varid'>userError</span> <span class='hs-layout'>(</span><span class='hs-str'>"connect: can't peform connect on socket in status "</span> <span class='hs-varop'>++</span>
<a name="line-446"></a> <span class='hs-varid'>show</span> <span class='hs-varid'>currentStatus</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-447"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-448"></a> <span class='hs-varid'>withSockAddr</span> <span class='hs-varid'>addr</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p_addr</span> <span class='hs-varid'>sz</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-449"></a>
<a name="line-450"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>connectLoop</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-451"></a> <span class='hs-varid'>r</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>c_connect</span> <span class='hs-varid'>s</span> <span class='hs-varid'>p_addr</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>sz</span><span class='hs-layout'>)</span>
<a name="line-452"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>r</span> <span class='hs-varop'>==</span> <span class='hs-comment'>-</span><span class='hs-num'>1</span>
<a name="line-453"></a> <span class='hs-keyword'>then</span> <span class='hs-keyword'>do</span>
<a name="line-454"></a>
<a name="line-455"></a><span class='hs-comment'>{-# LINE 440 "Network/Socket.hsc" #-}</span>
<a name="line-456"></a> <span class='hs-varid'>err</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getErrno</span>
<a name="line-457"></a> <span class='hs-keyword'>case</span> <span class='hs-conid'>()</span> <span class='hs-keyword'>of</span>
<a name="line-458"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>err</span> <span class='hs-varop'>==</span> <span class='hs-varid'>eINTR</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>connectLoop</span>
<a name="line-459"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>err</span> <span class='hs-varop'>==</span> <span class='hs-varid'>eINPROGRESS</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>connectBlocked</span>
<a name="line-460"></a><span class='hs-comment'>-- _ | err == eAGAIN -> connectBlocked</span>
<a name="line-461"></a> <span class='hs-sel'>_otherwise</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>throwSocketError</span> <span class='hs-str'>"connect"</span>
<a name="line-462"></a>
<a name="line-463"></a><span class='hs-comment'>{-# LINE 449 "Network/Socket.hsc" #-}</span>
<a name="line-464"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-465"></a>
<a name="line-466"></a> <span class='hs-varid'>connectBlocked</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-467"></a> <span class='hs-varid'>threadWaitWrite</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-468"></a> <span class='hs-varid'>err</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getSocketOption</span> <span class='hs-varid'>sock</span> <span class='hs-conid'>SoError</span>
<a name="line-469"></a> <span class='hs-keyword'>if</span> <span class='hs-layout'>(</span><span class='hs-varid'>err</span> <span class='hs-varop'>==</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span>
<a name="line-470"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-471"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>throwSocketErrorCode</span> <span class='hs-str'>"connect"</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>err</span><span class='hs-layout'>)</span>
<a name="line-472"></a>
<a name="line-473"></a> <span class='hs-varid'>connectLoop</span>
<a name="line-474"></a> <span class='hs-varid'>return</span> <span class='hs-conid'>Connected</span>
<a name="line-475"></a>
<a name="line-476"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-477"></a><span class='hs-comment'>-- Listen</span>
<a name="line-478"></a>
<a name="line-479"></a><a name="listen"></a><span class='hs-comment'>-- | Listen for connections made to the socket. The second argument</span>
<a name="line-480"></a><span class='hs-comment'>-- specifies the maximum number of queued connections and should be at</span>
<a name="line-481"></a><span class='hs-comment'>-- least 1; the maximum value is system-dependent (usually 5).</span>
<a name="line-482"></a><span class='hs-definition'>listen</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-comment'>-- Connected & Bound Socket</span>
<a name="line-483"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- Queue Length</span>
<a name="line-484"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-485"></a><span class='hs-definition'>listen</span> <span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-varid'>s</span> <span class='hs-sel'>_family</span> <span class='hs-sel'>_stype</span> <span class='hs-sel'>_protocol</span> <span class='hs-varid'>socketStatus</span><span class='hs-layout'>)</span> <span class='hs-varid'>backlog</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-486"></a> <span class='hs-varid'>modifyMVar_</span> <span class='hs-varid'>socketStatus</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span> <span class='hs-varid'>status</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-487"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>status</span> <span class='hs-varop'>/=</span> <span class='hs-conid'>Bound</span>
<a name="line-488"></a> <span class='hs-keyword'>then</span>
<a name="line-489"></a> <span class='hs-varid'>ioError</span> <span class='hs-layout'>(</span><span class='hs-varid'>userError</span> <span class='hs-layout'>(</span><span class='hs-str'>"listen: can't peform listen on socket in status "</span> <span class='hs-varop'>++</span>
<a name="line-490"></a> <span class='hs-varid'>show</span> <span class='hs-varid'>status</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-491"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-492"></a> <span class='hs-varid'>throwSocketErrorIfMinus1Retry_</span> <span class='hs-str'>"listen"</span> <span class='hs-layout'>(</span><span class='hs-varid'>c_listen</span> <span class='hs-varid'>s</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>backlog</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-493"></a> <span class='hs-varid'>return</span> <span class='hs-conid'>Listening</span>
<a name="line-494"></a>
<a name="line-495"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-496"></a><span class='hs-comment'>-- Accept</span>
<a name="line-497"></a><span class='hs-comment'>--</span>
<a name="line-498"></a><span class='hs-comment'>-- A call to `accept' only returns when data is available on the given</span>
<a name="line-499"></a><span class='hs-comment'>-- socket, unless the socket has been set to non-blocking. It will</span>
<a name="line-500"></a><span class='hs-comment'>-- return a new socket which should be used to read the incoming data and</span>
<a name="line-501"></a><span class='hs-comment'>-- should then be closed. Using the socket returned by `accept' allows</span>
<a name="line-502"></a><span class='hs-comment'>-- incoming requests to be queued on the original socket.</span>
<a name="line-503"></a>
<a name="line-504"></a><a name="accept"></a><span class='hs-comment'>-- | Accept a connection. The socket must be bound to an address and</span>
<a name="line-505"></a><span class='hs-comment'>-- listening for connections. The return value is a pair @(conn,</span>
<a name="line-506"></a><span class='hs-comment'>-- address)@ where @conn@ is a new socket object usable to send and</span>
<a name="line-507"></a><span class='hs-comment'>-- receive data on the connection, and @address@ is the address bound</span>
<a name="line-508"></a><span class='hs-comment'>-- to the socket on the other end of the connection.</span>
<a name="line-509"></a><span class='hs-definition'>accept</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-comment'>-- Queue Socket</span>
<a name="line-510"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Socket</span><span class='hs-layout'>,</span> <span class='hs-comment'>-- Readable Socket</span>
<a name="line-511"></a> <span class='hs-conid'>SockAddr</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- Peer details</span>
<a name="line-512"></a>
<a name="line-513"></a><span class='hs-definition'>accept</span> <span class='hs-varid'>sock</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>family</span> <span class='hs-varid'>stype</span> <span class='hs-varid'>protocol</span> <span class='hs-varid'>status</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-514"></a> <span class='hs-varid'>currentStatus</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readMVar</span> <span class='hs-varid'>status</span>
<a name="line-515"></a> <span class='hs-varid'>okay</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>isAcceptable</span> <span class='hs-varid'>sock</span>
<a name="line-516"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>not</span> <span class='hs-varid'>okay</span>
<a name="line-517"></a> <span class='hs-keyword'>then</span>
<a name="line-518"></a> <span class='hs-varid'>ioError</span> <span class='hs-layout'>(</span><span class='hs-varid'>userError</span> <span class='hs-layout'>(</span><span class='hs-str'>"accept: can't perform accept on socket ("</span> <span class='hs-varop'>++</span> <span class='hs-layout'>(</span><span class='hs-varid'>show</span> <span class='hs-layout'>(</span><span class='hs-keyword'>family</span><span class='hs-layout'>,</span><span class='hs-varid'>stype</span><span class='hs-layout'>,</span><span class='hs-varid'>protocol</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>++</span><span class='hs-str'>") in status "</span> <span class='hs-varop'>++</span>
<a name="line-519"></a> <span class='hs-varid'>show</span> <span class='hs-varid'>currentStatus</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-520"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-521"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>sz</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sizeOfSockAddrByFamily</span> <span class='hs-keyword'>family</span>
<a name="line-522"></a> <span class='hs-varid'>allocaBytes</span> <span class='hs-varid'>sz</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span> <span class='hs-varid'>sockaddr</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-523"></a>
<a name="line-524"></a><span class='hs-comment'>{-# LINE 523 "Network/Socket.hsc" #-}</span>
<a name="line-525"></a> <span class='hs-varid'>with</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>sz</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span> <span class='hs-varid'>ptr_len</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-526"></a>
<a name="line-527"></a><span class='hs-comment'>{-# LINE 525 "Network/Socket.hsc" #-}</span>
<a name="line-528"></a> <span class='hs-varid'>new_sock</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>throwSocketErrorIfMinus1RetryMayBlock</span> <span class='hs-str'>"accept"</span>
<a name="line-529"></a> <span class='hs-layout'>(</span><span class='hs-varid'>threadWaitRead</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-530"></a> <span class='hs-layout'>(</span><span class='hs-varid'>c_accept4</span> <span class='hs-varid'>s</span> <span class='hs-varid'>sockaddr</span> <span class='hs-varid'>ptr_len</span> <span class='hs-layout'>(</span><span class='hs-num'>2048</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-531"></a><span class='hs-comment'>{-# LINE 528 "Network/Socket.hsc" #-}</span>
<a name="line-532"></a>
<a name="line-533"></a><span class='hs-comment'>{-# LINE 533 "Network/Socket.hsc" #-}</span>
<a name="line-534"></a>
<a name="line-535"></a><span class='hs-comment'>{-# LINE 534 "Network/Socket.hsc" #-}</span>
<a name="line-536"></a> <span class='hs-varid'>addr</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>peekSockAddr</span> <span class='hs-varid'>sockaddr</span>
<a name="line-537"></a> <span class='hs-varid'>new_status</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>newMVar</span> <span class='hs-conid'>Connected</span>
<a name="line-538"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-varid'>new_sock</span> <span class='hs-keyword'>family</span> <span class='hs-varid'>stype</span> <span class='hs-varid'>protocol</span> <span class='hs-varid'>new_status</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>addr</span><span class='hs-layout'>)</span>
<a name="line-539"></a>
<a name="line-540"></a>
<a name="line-541"></a><span class='hs-comment'>{-# LINE 548 "Network/Socket.hsc" #-}</span>
<a name="line-542"></a>
<a name="line-543"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-544"></a><span class='hs-comment'>-- ** Sending and reciving data</span>
<a name="line-545"></a>
<a name="line-546"></a><span class='hs-comment'>-- $sendrecv</span>
<a name="line-547"></a><span class='hs-comment'>--</span>
<a name="line-548"></a><span class='hs-comment'>-- Do not use the @send@ and @recv@ functions defined in this section</span>
<a name="line-549"></a><span class='hs-comment'>-- in new code, as they incorrectly represent binary data as a Unicode</span>
<a name="line-550"></a><span class='hs-comment'>-- string. As a result, these functions are inefficient and may lead</span>
<a name="line-551"></a><span class='hs-comment'>-- to bugs in the program. Instead use the @send@ and @recv@</span>
<a name="line-552"></a><span class='hs-comment'>-- functions defined in the "Network.Socket.ByteString" module.</span>
<a name="line-553"></a>
<a name="line-554"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-555"></a><span class='hs-comment'>-- sendTo & recvFrom</span>
<a name="line-556"></a>
<a name="line-557"></a><a name="sendTo"></a><span class='hs-comment'>-- | Send data to the socket. The recipient can be specified</span>
<a name="line-558"></a><span class='hs-comment'>-- explicitly, so the socket need not be in a connected state.</span>
<a name="line-559"></a><span class='hs-comment'>-- Returns the number of bytes sent. Applications are responsible for</span>
<a name="line-560"></a><span class='hs-comment'>-- ensuring that all data has been sent.</span>
<a name="line-561"></a><span class='hs-comment'>--</span>
<a name="line-562"></a><span class='hs-comment'>-- NOTE: blocking on Windows unless you compile with -threaded (see</span>
<a name="line-563"></a><span class='hs-comment'>-- GHC ticket #1129)</span>
<a name="line-564"></a><span class='hs-comment'>{-# WARNING sendTo "Use sendTo defined in \"Network.Socket.ByteString\"" #-}</span>
<a name="line-565"></a><span class='hs-definition'>sendTo</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-comment'>-- (possibly) bound/connected Socket</span>
<a name="line-566"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-comment'>-- Data to send</span>
<a name="line-567"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SockAddr</span>
<a name="line-568"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- Number of Bytes sent</span>
<a name="line-569"></a><span class='hs-definition'>sendTo</span> <span class='hs-varid'>sock</span> <span class='hs-varid'>xs</span> <span class='hs-varid'>addr</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-570"></a> <span class='hs-varid'>withCStringLen</span> <span class='hs-varid'>xs</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-varid'>str</span><span class='hs-layout'>,</span> <span class='hs-varid'>len</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-571"></a> <span class='hs-varid'>sendBufTo</span> <span class='hs-varid'>sock</span> <span class='hs-varid'>str</span> <span class='hs-varid'>len</span> <span class='hs-varid'>addr</span>
<a name="line-572"></a>
<a name="line-573"></a><a name="sendBufTo"></a><span class='hs-comment'>-- | Send data to the socket. The recipient can be specified</span>
<a name="line-574"></a><span class='hs-comment'>-- explicitly, so the socket need not be in a connected state.</span>
<a name="line-575"></a><span class='hs-comment'>-- Returns the number of bytes sent. Applications are responsible for</span>
<a name="line-576"></a><span class='hs-comment'>-- ensuring that all data has been sent.</span>
<a name="line-577"></a><span class='hs-definition'>sendBufTo</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-comment'>-- (possibly) bound/connected Socket</span>
<a name="line-578"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- Data to send</span>
<a name="line-579"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SockAddr</span>
<a name="line-580"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- Number of Bytes sent</span>
<a name="line-581"></a><span class='hs-definition'>sendBufTo</span> <span class='hs-varid'>sock</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-varid'>s</span> <span class='hs-sel'>_family</span> <span class='hs-sel'>_stype</span> <span class='hs-sel'>_protocol</span> <span class='hs-sel'>_status</span><span class='hs-layout'>)</span> <span class='hs-varid'>ptr</span> <span class='hs-varid'>nbytes</span> <span class='hs-varid'>addr</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-582"></a> <span class='hs-varid'>withSockAddr</span> <span class='hs-varid'>addr</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>p_addr</span> <span class='hs-varid'>sz</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-583"></a> <span class='hs-varid'>liftM</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span>
<a name="line-584"></a> <span class='hs-varid'>throwSocketErrorWaitWrite</span> <span class='hs-varid'>sock</span> <span class='hs-str'>"sendTo"</span> <span class='hs-varop'>$</span>
<a name="line-585"></a> <span class='hs-varid'>c_sendto</span> <span class='hs-varid'>s</span> <span class='hs-varid'>ptr</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span> <span class='hs-varid'>nbytes</span><span class='hs-layout'>)</span> <span class='hs-num'>0</span><span class='hs-comment'>{-flags-}</span>
<a name="line-586"></a> <span class='hs-varid'>p_addr</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>sz</span><span class='hs-layout'>)</span>
<a name="line-587"></a>
<a name="line-588"></a><a name="recvFrom"></a><span class='hs-comment'>-- | Receive data from the socket. The socket need not be in a</span>
<a name="line-589"></a><span class='hs-comment'>-- connected state. Returns @(bytes, nbytes, address)@ where @bytes@</span>
<a name="line-590"></a><span class='hs-comment'>-- is a @String@ of length @nbytes@ representing the data received and</span>
<a name="line-591"></a><span class='hs-comment'>-- @address@ is a 'SockAddr' representing the address of the sending</span>
<a name="line-592"></a><span class='hs-comment'>-- socket.</span>
<a name="line-593"></a><span class='hs-comment'>--</span>
<a name="line-594"></a><span class='hs-comment'>-- NOTE: blocking on Windows unless you compile with -threaded (see</span>
<a name="line-595"></a><span class='hs-comment'>-- GHC ticket #1129)</span>
<a name="line-596"></a><span class='hs-comment'>{-# WARNING recvFrom "Use recvFrom defined in \"Network.Socket.ByteString\"" #-}</span>
<a name="line-597"></a><span class='hs-definition'>recvFrom</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>String</span><span class='hs-layout'>,</span> <span class='hs-conid'>Int</span><span class='hs-layout'>,</span> <span class='hs-conid'>SockAddr</span><span class='hs-layout'>)</span>
<a name="line-598"></a><span class='hs-definition'>recvFrom</span> <span class='hs-varid'>sock</span> <span class='hs-varid'>nbytes</span> <span class='hs-keyglyph'>=</span>
<a name="line-599"></a> <span class='hs-varid'>allocaBytes</span> <span class='hs-varid'>nbytes</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-600"></a> <span class='hs-layout'>(</span><span class='hs-varid'>len</span><span class='hs-layout'>,</span> <span class='hs-varid'>sockaddr</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>recvBufFrom</span> <span class='hs-varid'>sock</span> <span class='hs-varid'>ptr</span> <span class='hs-varid'>nbytes</span>
<a name="line-601"></a> <span class='hs-varid'>str</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>peekCStringLen</span> <span class='hs-layout'>(</span><span class='hs-varid'>ptr</span><span class='hs-layout'>,</span> <span class='hs-varid'>len</span><span class='hs-layout'>)</span>
<a name="line-602"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>str</span><span class='hs-layout'>,</span> <span class='hs-varid'>len</span><span class='hs-layout'>,</span> <span class='hs-varid'>sockaddr</span><span class='hs-layout'>)</span>
<a name="line-603"></a>
<a name="line-604"></a><a name="recvBufFrom"></a><span class='hs-comment'>-- | Receive data from the socket, writing it into buffer instead of</span>
<a name="line-605"></a><span class='hs-comment'>-- creating a new string. The socket need not be in a connected</span>
<a name="line-606"></a><span class='hs-comment'>-- state. Returns @(nbytes, address)@ where @nbytes@ is the number of</span>
<a name="line-607"></a><span class='hs-comment'>-- bytes received and @address@ is a 'SockAddr' representing the</span>
<a name="line-608"></a><span class='hs-comment'>-- address of the sending socket.</span>
<a name="line-609"></a><span class='hs-comment'>--</span>
<a name="line-610"></a><span class='hs-comment'>-- NOTE: blocking on Windows unless you compile with -threaded (see</span>
<a name="line-611"></a><span class='hs-comment'>-- GHC ticket #1129)</span>
<a name="line-612"></a><span class='hs-definition'>recvBufFrom</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Int</span><span class='hs-layout'>,</span> <span class='hs-conid'>SockAddr</span><span class='hs-layout'>)</span>
<a name="line-613"></a><span class='hs-definition'>recvBufFrom</span> <span class='hs-varid'>sock</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>family</span> <span class='hs-sel'>_stype</span> <span class='hs-sel'>_protocol</span> <span class='hs-sel'>_status</span><span class='hs-layout'>)</span> <span class='hs-varid'>ptr</span> <span class='hs-varid'>nbytes</span>
<a name="line-614"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>nbytes</span> <span class='hs-varop'><=</span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ioError</span> <span class='hs-layout'>(</span><span class='hs-varid'>mkInvalidRecvArgError</span> <span class='hs-str'>"Network.Socket.recvFrom"</span><span class='hs-layout'>)</span>
<a name="line-615"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span>
<a name="line-616"></a> <span class='hs-varid'>withNewSockAddr</span> <span class='hs-keyword'>family</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>ptr_addr</span> <span class='hs-varid'>sz</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-617"></a> <span class='hs-varid'>alloca</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>ptr_len</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-618"></a> <span class='hs-varid'>poke</span> <span class='hs-varid'>ptr_len</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>sz</span><span class='hs-layout'>)</span>
<a name="line-619"></a> <span class='hs-varid'>len</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>throwSocketErrorWaitRead</span> <span class='hs-varid'>sock</span> <span class='hs-str'>"recvFrom"</span> <span class='hs-varop'>$</span>
<a name="line-620"></a> <span class='hs-varid'>c_recvfrom</span> <span class='hs-varid'>s</span> <span class='hs-varid'>ptr</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>nbytes</span><span class='hs-layout'>)</span> <span class='hs-num'>0</span><span class='hs-comment'>{-flags-}</span>
<a name="line-621"></a> <span class='hs-varid'>ptr_addr</span> <span class='hs-varid'>ptr_len</span>
<a name="line-622"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>len'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>len</span>
<a name="line-623"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>len'</span> <span class='hs-varop'>==</span> <span class='hs-num'>0</span>
<a name="line-624"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>ioError</span> <span class='hs-layout'>(</span><span class='hs-varid'>mkEOFError</span> <span class='hs-str'>"Network.Socket.recvFrom"</span><span class='hs-layout'>)</span>
<a name="line-625"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-626"></a> <span class='hs-varid'>flg</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>isConnected</span> <span class='hs-varid'>sock</span>
<a name="line-627"></a> <span class='hs-comment'>-- For at least one implementation (WinSock 2), recvfrom() ignores</span>
<a name="line-628"></a> <span class='hs-comment'>-- filling in the sockaddr for connected TCP sockets. Cope with</span>
<a name="line-629"></a> <span class='hs-comment'>-- this by using getPeerName instead.</span>
<a name="line-630"></a> <span class='hs-varid'>sockaddr</span> <span class='hs-keyglyph'><-</span>
<a name="line-631"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>flg</span> <span class='hs-keyword'>then</span>
<a name="line-632"></a> <span class='hs-varid'>getPeerName</span> <span class='hs-varid'>sock</span>
<a name="line-633"></a> <span class='hs-keyword'>else</span>
<a name="line-634"></a> <span class='hs-varid'>peekSockAddr</span> <span class='hs-varid'>ptr_addr</span>
<a name="line-635"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>len'</span><span class='hs-layout'>,</span> <span class='hs-varid'>sockaddr</span><span class='hs-layout'>)</span>
<a name="line-636"></a>
<a name="line-637"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-638"></a><span class='hs-comment'>-- send & recv</span>
<a name="line-639"></a>
<a name="line-640"></a><a name="send"></a><span class='hs-comment'>-- | Send data to the socket. The socket must be connected to a remote</span>
<a name="line-641"></a><span class='hs-comment'>-- socket. Returns the number of bytes sent. Applications are</span>
<a name="line-642"></a><span class='hs-comment'>-- responsible for ensuring that all data has been sent.</span>
<a name="line-643"></a><span class='hs-comment'>--</span>
<a name="line-644"></a><span class='hs-comment'>-- Sending data to closed socket may lead to undefined behaviour.</span>
<a name="line-645"></a><span class='hs-comment'>{-# WARNING send "Use send defined in \"Network.Socket.ByteString\"" #-}</span>
<a name="line-646"></a><span class='hs-definition'>send</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-comment'>-- Bound/Connected Socket</span>
<a name="line-647"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-comment'>-- Data to send</span>
<a name="line-648"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- Number of Bytes sent</span>
<a name="line-649"></a><span class='hs-definition'>send</span> <span class='hs-varid'>sock</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withCStringLen</span> <span class='hs-varid'>xs</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-varid'>str</span><span class='hs-layout'>,</span> <span class='hs-varid'>len</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-650"></a> <span class='hs-varid'>sendBuf</span> <span class='hs-varid'>sock</span> <span class='hs-layout'>(</span><span class='hs-varid'>castPtr</span> <span class='hs-varid'>str</span><span class='hs-layout'>)</span> <span class='hs-varid'>len</span>
<a name="line-651"></a>
<a name="line-652"></a><a name="sendBuf"></a><span class='hs-comment'>-- | Send data to the socket. The socket must be connected to a remote</span>
<a name="line-653"></a><span class='hs-comment'>-- socket. Returns the number of bytes sent. Applications are</span>
<a name="line-654"></a><span class='hs-comment'>-- responsible for ensuring that all data has been sent.</span>
<a name="line-655"></a><span class='hs-comment'>--</span>
<a name="line-656"></a><span class='hs-comment'>-- Sending data to closed socket may lead to undefined behaviour.</span>
<a name="line-657"></a><span class='hs-definition'>sendBuf</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-comment'>-- Bound/Connected Socket</span>
<a name="line-658"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span> <span class='hs-comment'>-- Pointer to the data to send</span>
<a name="line-659"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- Length of the buffer</span>
<a name="line-660"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- Number of Bytes sent</span>
<a name="line-661"></a><span class='hs-definition'>sendBuf</span> <span class='hs-varid'>sock</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-varid'>s</span> <span class='hs-sel'>_family</span> <span class='hs-sel'>_stype</span> <span class='hs-sel'>_protocol</span> <span class='hs-sel'>_status</span><span class='hs-layout'>)</span> <span class='hs-varid'>str</span> <span class='hs-varid'>len</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-662"></a> <span class='hs-varid'>liftM</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span>
<a name="line-663"></a>
<a name="line-664"></a><span class='hs-comment'>{-# LINE 681 "Network/Socket.hsc" #-}</span>
<a name="line-665"></a> <span class='hs-varid'>throwSocketErrorWaitWrite</span> <span class='hs-varid'>sock</span> <span class='hs-str'>"sendBuf"</span> <span class='hs-varop'>$</span>
<a name="line-666"></a> <span class='hs-varid'>c_send</span> <span class='hs-varid'>s</span> <span class='hs-varid'>str</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>len</span><span class='hs-layout'>)</span> <span class='hs-num'>0</span><span class='hs-comment'>{-flags-}</span>
<a name="line-667"></a>
<a name="line-668"></a><span class='hs-comment'>{-# LINE 684 "Network/Socket.hsc" #-}</span>
<a name="line-669"></a>
<a name="line-670"></a>
<a name="line-671"></a><a name="recv"></a><span class='hs-comment'>-- | Receive data from the socket. The socket must be in a connected</span>
<a name="line-672"></a><span class='hs-comment'>-- state. This function may return fewer bytes than specified. If the</span>
<a name="line-673"></a><span class='hs-comment'>-- message is longer than the specified length, it may be discarded</span>
<a name="line-674"></a><span class='hs-comment'>-- depending on the type of socket. This function may block until a</span>
<a name="line-675"></a><span class='hs-comment'>-- message arrives.</span>
<a name="line-676"></a><span class='hs-comment'>--</span>
<a name="line-677"></a><span class='hs-comment'>-- Considering hardware and network realities, the maximum number of</span>
<a name="line-678"></a><span class='hs-comment'>-- bytes to receive should be a small power of 2, e.g., 4096.</span>
<a name="line-679"></a><span class='hs-comment'>--</span>
<a name="line-680"></a><span class='hs-comment'>-- For TCP sockets, a zero length return value means the peer has</span>
<a name="line-681"></a><span class='hs-comment'>-- closed its half side of the connection.</span>
<a name="line-682"></a><span class='hs-comment'>--</span>
<a name="line-683"></a><span class='hs-comment'>-- Receiving data from closed socket may lead to undefined behaviour.</span>
<a name="line-684"></a><span class='hs-comment'>{-# WARNING recv "Use recv defined in \"Network.Socket.ByteString\"" #-}</span>
<a name="line-685"></a><span class='hs-definition'>recv</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>String</span>
<a name="line-686"></a><span class='hs-definition'>recv</span> <span class='hs-varid'>sock</span> <span class='hs-varid'>l</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fst</span> <span class='hs-varop'><$></span> <span class='hs-varid'>recvLen</span> <span class='hs-varid'>sock</span> <span class='hs-varid'>l</span>
<a name="line-687"></a>
<a name="line-688"></a><a name="recvLen"></a><span class='hs-comment'>{-# WARNING recvLen "Use recvLen defined in \"Network.Socket.ByteString\"" #-}</span>
<a name="line-689"></a><span class='hs-definition'>recvLen</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>String</span><span class='hs-layout'>,</span> <span class='hs-conid'>Int</span><span class='hs-layout'>)</span>
<a name="line-690"></a><span class='hs-definition'>recvLen</span> <span class='hs-varid'>sock</span> <span class='hs-varid'>nbytes</span> <span class='hs-keyglyph'>=</span>
<a name="line-691"></a> <span class='hs-varid'>allocaBytes</span> <span class='hs-varid'>nbytes</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-692"></a> <span class='hs-varid'>len</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>recvBuf</span> <span class='hs-varid'>sock</span> <span class='hs-varid'>ptr</span> <span class='hs-varid'>nbytes</span>
<a name="line-693"></a> <span class='hs-varid'>s</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>peekCStringLen</span> <span class='hs-layout'>(</span><span class='hs-varid'>castPtr</span> <span class='hs-varid'>ptr</span><span class='hs-layout'>,</span><span class='hs-varid'>len</span><span class='hs-layout'>)</span>
<a name="line-694"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>s</span><span class='hs-layout'>,</span> <span class='hs-varid'>len</span><span class='hs-layout'>)</span>
<a name="line-695"></a>
<a name="line-696"></a><a name="recvBuf"></a><span class='hs-comment'>-- | Receive data from the socket. The socket must be in a connected</span>
<a name="line-697"></a><span class='hs-comment'>-- state. This function may return fewer bytes than specified. If the</span>
<a name="line-698"></a><span class='hs-comment'>-- message is longer than the specified length, it may be discarded</span>
<a name="line-699"></a><span class='hs-comment'>-- depending on the type of socket. This function may block until a</span>
<a name="line-700"></a><span class='hs-comment'>-- message arrives.</span>
<a name="line-701"></a><span class='hs-comment'>--</span>
<a name="line-702"></a><span class='hs-comment'>-- Considering hardware and network realities, the maximum number of</span>
<a name="line-703"></a><span class='hs-comment'>-- bytes to receive should be a small power of 2, e.g., 4096.</span>
<a name="line-704"></a><span class='hs-comment'>--</span>
<a name="line-705"></a><span class='hs-comment'>-- For TCP sockets, a zero length return value means the peer has</span>
<a name="line-706"></a><span class='hs-comment'>-- closed its half side of the connection.</span>
<a name="line-707"></a><span class='hs-comment'>--</span>
<a name="line-708"></a><span class='hs-comment'>-- Receiving data from closed socket may lead to undefined behaviour.</span>
<a name="line-709"></a><span class='hs-definition'>recvBuf</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>Word8</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Int</span>
<a name="line-710"></a><span class='hs-definition'>recvBuf</span> <span class='hs-varid'>sock</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-varid'>s</span> <span class='hs-sel'>_family</span> <span class='hs-sel'>_stype</span> <span class='hs-sel'>_protocol</span> <span class='hs-sel'>_status</span><span class='hs-layout'>)</span> <span class='hs-varid'>ptr</span> <span class='hs-varid'>nbytes</span>
<a name="line-711"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>nbytes</span> <span class='hs-varop'><=</span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ioError</span> <span class='hs-layout'>(</span><span class='hs-varid'>mkInvalidRecvArgError</span> <span class='hs-str'>"Network.Socket.recvBuf"</span><span class='hs-layout'>)</span>
<a name="line-712"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-713"></a> <span class='hs-varid'>len</span> <span class='hs-keyglyph'><-</span>
<a name="line-714"></a>
<a name="line-715"></a><span class='hs-comment'>{-# LINE 735 "Network/Socket.hsc" #-}</span>
<a name="line-716"></a> <span class='hs-varid'>throwSocketErrorWaitRead</span> <span class='hs-varid'>sock</span> <span class='hs-str'>"recvBuf"</span> <span class='hs-varop'>$</span>
<a name="line-717"></a> <span class='hs-varid'>c_recv</span> <span class='hs-varid'>s</span> <span class='hs-layout'>(</span><span class='hs-varid'>castPtr</span> <span class='hs-varid'>ptr</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>nbytes</span><span class='hs-layout'>)</span> <span class='hs-num'>0</span><span class='hs-comment'>{-flags-}</span>
<a name="line-718"></a>
<a name="line-719"></a><span class='hs-comment'>{-# LINE 738 "Network/Socket.hsc" #-}</span>
<a name="line-720"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>len'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>len</span>
<a name="line-721"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>len'</span> <span class='hs-varop'>==</span> <span class='hs-num'>0</span>
<a name="line-722"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>ioError</span> <span class='hs-layout'>(</span><span class='hs-varid'>mkEOFError</span> <span class='hs-str'>"Network.Socket.recvBuf"</span><span class='hs-layout'>)</span>
<a name="line-723"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-varid'>len'</span>
<a name="line-724"></a>
<a name="line-725"></a>
<a name="line-726"></a><span class='hs-comment'>-- ---------------------------------------------------------------------------</span>
<a name="line-727"></a><span class='hs-comment'>-- socketPort</span>
<a name="line-728"></a><span class='hs-comment'>--</span>
<a name="line-729"></a><span class='hs-comment'>-- The port number the given socket is currently connected to can be</span>
<a name="line-730"></a><span class='hs-comment'>-- determined by calling $port$, is generally only useful when bind</span>
<a name="line-731"></a><span class='hs-comment'>-- was given $aNY\_PORT$.</span>
<a name="line-732"></a>
<a name="line-733"></a><a name="socketPort"></a><span class='hs-definition'>socketPort</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-comment'>-- Connected & Bound Socket</span>
<a name="line-734"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>PortNumber</span> <span class='hs-comment'>-- Port Number of Socket</span>
<a name="line-735"></a><span class='hs-definition'>socketPort</span> <span class='hs-varid'>sock</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>AF_INET</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-736"></a> <span class='hs-layout'>(</span><span class='hs-conid'>SockAddrInet</span> <span class='hs-varid'>port</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getSocketName</span> <span class='hs-varid'>sock</span>
<a name="line-737"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>port</span>
<a name="line-738"></a>
<a name="line-739"></a><span class='hs-comment'>{-# LINE 757 "Network/Socket.hsc" #-}</span>
<a name="line-740"></a><span class='hs-definition'>socketPort</span> <span class='hs-varid'>sock</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>AF_INET6</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-741"></a> <span class='hs-layout'>(</span><span class='hs-conid'>SockAddrInet6</span> <span class='hs-varid'>port</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>getSocketName</span> <span class='hs-varid'>sock</span>
<a name="line-742"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>port</span>
<a name="line-743"></a>
<a name="line-744"></a><span class='hs-comment'>{-# LINE 761 "Network/Socket.hsc" #-}</span>
<a name="line-745"></a><span class='hs-definition'>socketPort</span> <span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>family</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-746"></a> <span class='hs-varid'>ioError</span> <span class='hs-layout'>(</span><span class='hs-varid'>userError</span> <span class='hs-layout'>(</span><span class='hs-str'>"socketPort: not supported for Family "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-keyword'>family</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-747"></a>
<a name="line-748"></a>
<a name="line-749"></a><span class='hs-comment'>-- ---------------------------------------------------------------------------</span>
<a name="line-750"></a><span class='hs-comment'>-- getPeerName</span>
<a name="line-751"></a>
<a name="line-752"></a><span class='hs-comment'>-- Calling $getPeerName$ returns the address details of the machine,</span>
<a name="line-753"></a><span class='hs-comment'>-- other than the local one, which is connected to the socket. This is</span>
<a name="line-754"></a><span class='hs-comment'>-- used in programs such as FTP to determine where to send the</span>
<a name="line-755"></a><span class='hs-comment'>-- returning data. The corresponding call to get the details of the</span>
<a name="line-756"></a><span class='hs-comment'>-- local machine is $getSocketName$.</span>
<a name="line-757"></a>
<a name="line-758"></a><a name="getPeerName"></a><span class='hs-definition'>getPeerName</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>SockAddr</span>
<a name="line-759"></a><span class='hs-definition'>getPeerName</span> <span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>family</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-760"></a> <span class='hs-varid'>withNewSockAddr</span> <span class='hs-keyword'>family</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>ptr</span> <span class='hs-varid'>sz</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-761"></a> <span class='hs-varid'>with</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>sz</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>int_star</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-762"></a> <span class='hs-varid'>throwSocketErrorIfMinus1Retry_</span> <span class='hs-str'>"getPeerName"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>c_getpeername</span> <span class='hs-varid'>s</span> <span class='hs-varid'>ptr</span> <span class='hs-varid'>int_star</span>
<a name="line-763"></a> <span class='hs-sel'>_sz</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>peek</span> <span class='hs-varid'>int_star</span>
<a name="line-764"></a> <span class='hs-varid'>peekSockAddr</span> <span class='hs-varid'>ptr</span>
<a name="line-765"></a>
<a name="line-766"></a><a name="getSocketName"></a><span class='hs-definition'>getSocketName</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>SockAddr</span>
<a name="line-767"></a><span class='hs-definition'>getSocketName</span> <span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>family</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-768"></a> <span class='hs-varid'>withNewSockAddr</span> <span class='hs-keyword'>family</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>ptr</span> <span class='hs-varid'>sz</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-769"></a> <span class='hs-varid'>with</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>sz</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>int_star</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-770"></a> <span class='hs-varid'>throwSocketErrorIfMinus1Retry_</span> <span class='hs-str'>"getSocketName"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>c_getsockname</span> <span class='hs-varid'>s</span> <span class='hs-varid'>ptr</span> <span class='hs-varid'>int_star</span>
<a name="line-771"></a> <span class='hs-varid'>peekSockAddr</span> <span class='hs-varid'>ptr</span>
<a name="line-772"></a>
<a name="line-773"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-774"></a><span class='hs-comment'>-- Socket Properties</span>
<a name="line-775"></a>
<a name="line-776"></a><a name="SocketOption"></a><span class='hs-comment'>-- | Socket options for use with 'setSocketOption' and 'getSocketOption'.</span>
<a name="line-777"></a><a name="SocketOption"></a><span class='hs-comment'>--</span>
<a name="line-778"></a><a name="SocketOption"></a><span class='hs-comment'>-- The existence of a constructor does not imply that the relevant option</span>
<a name="line-779"></a><a name="SocketOption"></a><span class='hs-comment'>-- is supported on your system: see 'isSupportedSocketOption'</span>
<a name="line-780"></a><a name="SocketOption"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>SocketOption</span>
<a name="line-781"></a> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Debug</span> <span class='hs-comment'>-- ^ SO_DEBUG</span>
<a name="line-782"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>ReuseAddr</span> <span class='hs-comment'>-- ^ SO_REUSEADDR</span>
<a name="line-783"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Type</span> <span class='hs-comment'>-- ^ SO_TYPE</span>
<a name="line-784"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>SoError</span> <span class='hs-comment'>-- ^ SO_ERROR</span>
<a name="line-785"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>DontRoute</span> <span class='hs-comment'>-- ^ SO_DONTROUTE</span>
<a name="line-786"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Broadcast</span> <span class='hs-comment'>-- ^ SO_BROADCAST</span>
<a name="line-787"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>SendBuffer</span> <span class='hs-comment'>-- ^ SO_SNDBUF</span>
<a name="line-788"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>RecvBuffer</span> <span class='hs-comment'>-- ^ SO_RCVBUF</span>
<a name="line-789"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>KeepAlive</span> <span class='hs-comment'>-- ^ SO_KEEPALIVE</span>
<a name="line-790"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>OOBInline</span> <span class='hs-comment'>-- ^ SO_OOBINLINE</span>
<a name="line-791"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>TimeToLive</span> <span class='hs-comment'>-- ^ IP_TTL</span>
<a name="line-792"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>MaxSegment</span> <span class='hs-comment'>-- ^ TCP_MAXSEG</span>
<a name="line-793"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>NoDelay</span> <span class='hs-comment'>-- ^ TCP_NODELAY</span>
<a name="line-794"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Cork</span> <span class='hs-comment'>-- ^ TCP_CORK</span>
<a name="line-795"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Linger</span> <span class='hs-comment'>-- ^ SO_LINGER</span>
<a name="line-796"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>ReusePort</span> <span class='hs-comment'>-- ^ SO_REUSEPORT</span>
<a name="line-797"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>RecvLowWater</span> <span class='hs-comment'>-- ^ SO_RCVLOWAT</span>
<a name="line-798"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>SendLowWater</span> <span class='hs-comment'>-- ^ SO_SNDLOWAT</span>
<a name="line-799"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>RecvTimeOut</span> <span class='hs-comment'>-- ^ SO_RCVTIMEO</span>
<a name="line-800"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>SendTimeOut</span> <span class='hs-comment'>-- ^ SO_SNDTIMEO</span>
<a name="line-801"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>UseLoopBack</span> <span class='hs-comment'>-- ^ SO_USELOOPBACK</span>
<a name="line-802"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>UserTimeout</span> <span class='hs-comment'>-- ^ TCP_USER_TIMEOUT</span>
<a name="line-803"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>IPv6Only</span> <span class='hs-comment'>-- ^ IPV6_V6ONLY</span>
<a name="line-804"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>CustomSockOpt</span> <span class='hs-layout'>(</span><span class='hs-conid'>CInt</span><span class='hs-layout'>,</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span>
<a name="line-805"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Show</span><span class='hs-layout'>,</span> <span class='hs-conid'>Typeable</span><span class='hs-layout'>)</span>
<a name="line-806"></a>
<a name="line-807"></a><a name="isSupportedSocketOption"></a><span class='hs-comment'>-- | Does the 'SocketOption' exist on this system?</span>
<a name="line-808"></a><span class='hs-definition'>isSupportedSocketOption</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SocketOption</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-809"></a><span class='hs-definition'>isSupportedSocketOption</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>isJust</span> <span class='hs-varop'>.</span> <span class='hs-varid'>packSocketOption</span>
<a name="line-810"></a>
<a name="line-811"></a><a name="packSocketOption"></a><span class='hs-comment'>-- | For a socket option, return Just (level, value) where level is the</span>
<a name="line-812"></a><span class='hs-comment'>-- corresponding C option level constant (e.g. SOL_SOCKET) and value is</span>
<a name="line-813"></a><span class='hs-comment'>-- the option constant itself (e.g. SO_DEBUG)</span>
<a name="line-814"></a><span class='hs-comment'>-- If either constant does not exist, return Nothing.</span>
<a name="line-815"></a><span class='hs-definition'>packSocketOption</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SocketOption</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>CInt</span><span class='hs-layout'>,</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span>
<a name="line-816"></a><span class='hs-definition'>packSocketOption</span> <span class='hs-varid'>so</span> <span class='hs-keyglyph'>=</span>
<a name="line-817"></a> <span class='hs-comment'>-- The Just here is a hack to disable GHC's overlapping pattern detection:</span>
<a name="line-818"></a> <span class='hs-comment'>-- the problem is if all constants are present, the fallback pattern is</span>
<a name="line-819"></a> <span class='hs-comment'>-- redundant, but if they aren't then it isn't. Hence we introduce an</span>
<a name="line-820"></a> <span class='hs-comment'>-- extra pattern (Nothing) that can't possibly happen, so that the</span>
<a name="line-821"></a> <span class='hs-comment'>-- fallback is always (in principle) necessary.</span>
<a name="line-822"></a> <span class='hs-comment'>-- I feel a little bad for including this, but such are the sacrifices we</span>
<a name="line-823"></a> <span class='hs-comment'>-- make while working with CPP - excluding the fallback pattern correctly</span>
<a name="line-824"></a> <span class='hs-comment'>-- would be a serious nuisance.</span>
<a name="line-825"></a> <span class='hs-comment'>-- (NB: comments elsewhere in this file refer to this one)</span>
<a name="line-826"></a> <span class='hs-keyword'>case</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>so</span> <span class='hs-keyword'>of</span>
<a name="line-827"></a>
<a name="line-828"></a><span class='hs-comment'>{-# LINE 844 "Network/Socket.hsc" #-}</span>
<a name="line-829"></a>
<a name="line-830"></a><span class='hs-comment'>{-# LINE 845 "Network/Socket.hsc" #-}</span>
<a name="line-831"></a> <span class='hs-conid'>Just</span> <span class='hs-conid'>Debug</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-832"></a><span class='hs-comment'>{-# LINE 846 "Network/Socket.hsc" #-}</span>
<a name="line-833"></a>
<a name="line-834"></a><span class='hs-comment'>{-# LINE 847 "Network/Socket.hsc" #-}</span>
<a name="line-835"></a>
<a name="line-836"></a><span class='hs-comment'>{-# LINE 848 "Network/Socket.hsc" #-}</span>
<a name="line-837"></a> <span class='hs-conid'>Just</span> <span class='hs-conid'>ReuseAddr</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-num'>2</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-838"></a><span class='hs-comment'>{-# LINE 849 "Network/Socket.hsc" #-}</span>
<a name="line-839"></a>
<a name="line-840"></a><span class='hs-comment'>{-# LINE 850 "Network/Socket.hsc" #-}</span>
<a name="line-841"></a>
<a name="line-842"></a><span class='hs-comment'>{-# LINE 851 "Network/Socket.hsc" #-}</span>
<a name="line-843"></a> <span class='hs-conid'>Just</span> <span class='hs-conid'>Type</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-num'>3</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-844"></a><span class='hs-comment'>{-# LINE 852 "Network/Socket.hsc" #-}</span>
<a name="line-845"></a>
<a name="line-846"></a><span class='hs-comment'>{-# LINE 853 "Network/Socket.hsc" #-}</span>
<a name="line-847"></a>
<a name="line-848"></a><span class='hs-comment'>{-# LINE 854 "Network/Socket.hsc" #-}</span>
<a name="line-849"></a> <span class='hs-conid'>Just</span> <span class='hs-conid'>SoError</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-num'>4</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-850"></a><span class='hs-comment'>{-# LINE 855 "Network/Socket.hsc" #-}</span>
<a name="line-851"></a>
<a name="line-852"></a><span class='hs-comment'>{-# LINE 856 "Network/Socket.hsc" #-}</span>
<a name="line-853"></a>
<a name="line-854"></a><span class='hs-comment'>{-# LINE 857 "Network/Socket.hsc" #-}</span>
<a name="line-855"></a> <span class='hs-conid'>Just</span> <span class='hs-conid'>DontRoute</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-num'>5</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-856"></a><span class='hs-comment'>{-# LINE 858 "Network/Socket.hsc" #-}</span>
<a name="line-857"></a>
<a name="line-858"></a><span class='hs-comment'>{-# LINE 859 "Network/Socket.hsc" #-}</span>
<a name="line-859"></a>
<a name="line-860"></a><span class='hs-comment'>{-# LINE 860 "Network/Socket.hsc" #-}</span>
<a name="line-861"></a> <span class='hs-conid'>Just</span> <span class='hs-conid'>Broadcast</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-num'>6</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-862"></a><span class='hs-comment'>{-# LINE 861 "Network/Socket.hsc" #-}</span>
<a name="line-863"></a>
<a name="line-864"></a><span class='hs-comment'>{-# LINE 862 "Network/Socket.hsc" #-}</span>
<a name="line-865"></a>
<a name="line-866"></a><span class='hs-comment'>{-# LINE 863 "Network/Socket.hsc" #-}</span>
<a name="line-867"></a> <span class='hs-conid'>Just</span> <span class='hs-conid'>SendBuffer</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-num'>7</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-868"></a><span class='hs-comment'>{-# LINE 864 "Network/Socket.hsc" #-}</span>
<a name="line-869"></a>
<a name="line-870"></a><span class='hs-comment'>{-# LINE 865 "Network/Socket.hsc" #-}</span>
<a name="line-871"></a>
<a name="line-872"></a><span class='hs-comment'>{-# LINE 866 "Network/Socket.hsc" #-}</span>
<a name="line-873"></a> <span class='hs-conid'>Just</span> <span class='hs-conid'>RecvBuffer</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-num'>8</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-874"></a><span class='hs-comment'>{-# LINE 867 "Network/Socket.hsc" #-}</span>
<a name="line-875"></a>
<a name="line-876"></a><span class='hs-comment'>{-# LINE 868 "Network/Socket.hsc" #-}</span>
<a name="line-877"></a>
<a name="line-878"></a><span class='hs-comment'>{-# LINE 869 "Network/Socket.hsc" #-}</span>
<a name="line-879"></a> <span class='hs-conid'>Just</span> <span class='hs-conid'>KeepAlive</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-num'>9</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-880"></a><span class='hs-comment'>{-# LINE 870 "Network/Socket.hsc" #-}</span>
<a name="line-881"></a>
<a name="line-882"></a><span class='hs-comment'>{-# LINE 871 "Network/Socket.hsc" #-}</span>
<a name="line-883"></a>
<a name="line-884"></a><span class='hs-comment'>{-# LINE 872 "Network/Socket.hsc" #-}</span>
<a name="line-885"></a> <span class='hs-conid'>Just</span> <span class='hs-conid'>OOBInline</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-num'>10</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-886"></a><span class='hs-comment'>{-# LINE 873 "Network/Socket.hsc" #-}</span>
<a name="line-887"></a>
<a name="line-888"></a><span class='hs-comment'>{-# LINE 874 "Network/Socket.hsc" #-}</span>
<a name="line-889"></a>
<a name="line-890"></a><span class='hs-comment'>{-# LINE 875 "Network/Socket.hsc" #-}</span>
<a name="line-891"></a> <span class='hs-conid'>Just</span> <span class='hs-conid'>Linger</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-num'>13</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-892"></a><span class='hs-comment'>{-# LINE 876 "Network/Socket.hsc" #-}</span>
<a name="line-893"></a>
<a name="line-894"></a><span class='hs-comment'>{-# LINE 877 "Network/Socket.hsc" #-}</span>
<a name="line-895"></a>
<a name="line-896"></a><span class='hs-comment'>{-# LINE 878 "Network/Socket.hsc" #-}</span>
<a name="line-897"></a> <span class='hs-conid'>Just</span> <span class='hs-conid'>ReusePort</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-num'>15</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-898"></a><span class='hs-comment'>{-# LINE 879 "Network/Socket.hsc" #-}</span>
<a name="line-899"></a>
<a name="line-900"></a><span class='hs-comment'>{-# LINE 880 "Network/Socket.hsc" #-}</span>
<a name="line-901"></a>
<a name="line-902"></a><span class='hs-comment'>{-# LINE 881 "Network/Socket.hsc" #-}</span>
<a name="line-903"></a> <span class='hs-conid'>Just</span> <span class='hs-conid'>RecvLowWater</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-num'>18</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-904"></a><span class='hs-comment'>{-# LINE 882 "Network/Socket.hsc" #-}</span>
<a name="line-905"></a>
<a name="line-906"></a><span class='hs-comment'>{-# LINE 883 "Network/Socket.hsc" #-}</span>
<a name="line-907"></a>
<a name="line-908"></a><span class='hs-comment'>{-# LINE 884 "Network/Socket.hsc" #-}</span>
<a name="line-909"></a> <span class='hs-conid'>Just</span> <span class='hs-conid'>SendLowWater</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-num'>19</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-910"></a><span class='hs-comment'>{-# LINE 885 "Network/Socket.hsc" #-}</span>
<a name="line-911"></a>
<a name="line-912"></a><span class='hs-comment'>{-# LINE 886 "Network/Socket.hsc" #-}</span>
<a name="line-913"></a>
<a name="line-914"></a><span class='hs-comment'>{-# LINE 887 "Network/Socket.hsc" #-}</span>
<a name="line-915"></a> <span class='hs-conid'>Just</span> <span class='hs-conid'>RecvTimeOut</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-num'>20</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-916"></a><span class='hs-comment'>{-# LINE 888 "Network/Socket.hsc" #-}</span>
<a name="line-917"></a>
<a name="line-918"></a><span class='hs-comment'>{-# LINE 889 "Network/Socket.hsc" #-}</span>
<a name="line-919"></a>
<a name="line-920"></a><span class='hs-comment'>{-# LINE 890 "Network/Socket.hsc" #-}</span>
<a name="line-921"></a> <span class='hs-conid'>Just</span> <span class='hs-conid'>SendTimeOut</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-num'>21</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-922"></a><span class='hs-comment'>{-# LINE 891 "Network/Socket.hsc" #-}</span>
<a name="line-923"></a>
<a name="line-924"></a><span class='hs-comment'>{-# LINE 892 "Network/Socket.hsc" #-}</span>
<a name="line-925"></a>
<a name="line-926"></a><span class='hs-comment'>{-# LINE 895 "Network/Socket.hsc" #-}</span>
<a name="line-927"></a>
<a name="line-928"></a><span class='hs-comment'>{-# LINE 896 "Network/Socket.hsc" #-}</span>
<a name="line-929"></a>
<a name="line-930"></a><span class='hs-comment'>{-# LINE 897 "Network/Socket.hsc" #-}</span>
<a name="line-931"></a>
<a name="line-932"></a><span class='hs-comment'>{-# LINE 898 "Network/Socket.hsc" #-}</span>
<a name="line-933"></a> <span class='hs-conid'>Just</span> <span class='hs-conid'>TimeToLive</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-num'>2</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-934"></a><span class='hs-comment'>{-# LINE 899 "Network/Socket.hsc" #-}</span>
<a name="line-935"></a>
<a name="line-936"></a><span class='hs-comment'>{-# LINE 900 "Network/Socket.hsc" #-}</span>
<a name="line-937"></a>
<a name="line-938"></a><span class='hs-comment'>{-# LINE 901 "Network/Socket.hsc" #-}</span>
<a name="line-939"></a>
<a name="line-940"></a><span class='hs-comment'>{-# LINE 902 "Network/Socket.hsc" #-}</span>
<a name="line-941"></a>
<a name="line-942"></a><span class='hs-comment'>{-# LINE 903 "Network/Socket.hsc" #-}</span>
<a name="line-943"></a> <span class='hs-conid'>Just</span> <span class='hs-conid'>MaxSegment</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-num'>6</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-num'>2</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-944"></a><span class='hs-comment'>{-# LINE 904 "Network/Socket.hsc" #-}</span>
<a name="line-945"></a>
<a name="line-946"></a><span class='hs-comment'>{-# LINE 905 "Network/Socket.hsc" #-}</span>
<a name="line-947"></a>
<a name="line-948"></a><span class='hs-comment'>{-# LINE 906 "Network/Socket.hsc" #-}</span>
<a name="line-949"></a> <span class='hs-conid'>Just</span> <span class='hs-conid'>NoDelay</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-num'>6</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-950"></a><span class='hs-comment'>{-# LINE 907 "Network/Socket.hsc" #-}</span>
<a name="line-951"></a>
<a name="line-952"></a><span class='hs-comment'>{-# LINE 908 "Network/Socket.hsc" #-}</span>
<a name="line-953"></a>
<a name="line-954"></a><span class='hs-comment'>{-# LINE 909 "Network/Socket.hsc" #-}</span>
<a name="line-955"></a> <span class='hs-conid'>Just</span> <span class='hs-conid'>UserTimeout</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-num'>6</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-num'>18</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-956"></a><span class='hs-comment'>{-# LINE 910 "Network/Socket.hsc" #-}</span>
<a name="line-957"></a>
<a name="line-958"></a><span class='hs-comment'>{-# LINE 911 "Network/Socket.hsc" #-}</span>
<a name="line-959"></a>
<a name="line-960"></a><span class='hs-comment'>{-# LINE 912 "Network/Socket.hsc" #-}</span>
<a name="line-961"></a> <span class='hs-conid'>Just</span> <span class='hs-conid'>Cork</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-num'>6</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-num'>3</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-962"></a><span class='hs-comment'>{-# LINE 913 "Network/Socket.hsc" #-}</span>
<a name="line-963"></a>
<a name="line-964"></a><span class='hs-comment'>{-# LINE 914 "Network/Socket.hsc" #-}</span>
<a name="line-965"></a>
<a name="line-966"></a><span class='hs-comment'>{-# LINE 915 "Network/Socket.hsc" #-}</span>
<a name="line-967"></a>
<a name="line-968"></a><span class='hs-comment'>{-# LINE 916 "Network/Socket.hsc" #-}</span>
<a name="line-969"></a>
<a name="line-970"></a><span class='hs-comment'>{-# LINE 917 "Network/Socket.hsc" #-}</span>
<a name="line-971"></a> <span class='hs-conid'>Just</span> <span class='hs-conid'>IPv6Only</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-num'>41</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-num'>26</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-972"></a><span class='hs-comment'>{-# LINE 918 "Network/Socket.hsc" #-}</span>
<a name="line-973"></a>
<a name="line-974"></a><span class='hs-comment'>{-# LINE 919 "Network/Socket.hsc" #-}</span>
<a name="line-975"></a>
<a name="line-976"></a><span class='hs-comment'>{-# LINE 920 "Network/Socket.hsc" #-}</span>
<a name="line-977"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>CustomSockOpt</span> <span class='hs-varid'>opt</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-varid'>opt</span>
<a name="line-978"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span>
<a name="line-979"></a>
<a name="line-980"></a><a name="packSocketOption'"></a><span class='hs-comment'>-- | Return the option level and option value if they exist,</span>
<a name="line-981"></a><span class='hs-comment'>-- otherwise throw an error that begins "Network.Socket." ++ the String</span>
<a name="line-982"></a><span class='hs-comment'>-- parameter</span>
<a name="line-983"></a><span class='hs-definition'>packSocketOption'</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SocketOption</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>CInt</span><span class='hs-layout'>,</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span>
<a name="line-984"></a><span class='hs-definition'>packSocketOption'</span> <span class='hs-varid'>caller</span> <span class='hs-varid'>so</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maybe</span> <span class='hs-varid'>err</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>packSocketOption</span> <span class='hs-varid'>so</span><span class='hs-layout'>)</span>
<a name="line-985"></a> <span class='hs-keyword'>where</span>
<a name="line-986"></a> <span class='hs-varid'>err</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ioError</span> <span class='hs-varop'>.</span> <span class='hs-varid'>userError</span> <span class='hs-varop'>.</span> <span class='hs-varid'>concat</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>[</span><span class='hs-str'>"Network.Socket."</span><span class='hs-layout'>,</span> <span class='hs-varid'>caller</span><span class='hs-layout'>,</span>
<a name="line-987"></a> <span class='hs-str'>": socket option "</span><span class='hs-layout'>,</span> <span class='hs-varid'>show</span> <span class='hs-varid'>so</span><span class='hs-layout'>,</span> <span class='hs-str'>" unsupported on this system"</span><span class='hs-keyglyph'>]</span>
<a name="line-988"></a>
<a name="line-989"></a><a name="setSocketOption"></a><span class='hs-comment'>-- | Set a socket option that expects an Int value.</span>
<a name="line-990"></a><span class='hs-comment'>-- There is currently no API to set e.g. the timeval socket options</span>
<a name="line-991"></a><span class='hs-definition'>setSocketOption</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span>
<a name="line-992"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SocketOption</span> <span class='hs-comment'>-- Option Name</span>
<a name="line-993"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- Option Value</span>
<a name="line-994"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-995"></a><span class='hs-definition'>setSocketOption</span> <span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-varid'>so</span> <span class='hs-varid'>v</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-996"></a> <span class='hs-layout'>(</span><span class='hs-varid'>level</span><span class='hs-layout'>,</span> <span class='hs-varid'>opt</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>packSocketOption'</span> <span class='hs-str'>"setSocketOption"</span> <span class='hs-varid'>so</span>
<a name="line-997"></a> <span class='hs-varid'>with</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>v</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>ptr_v</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-998"></a> <span class='hs-varid'>throwSocketErrorIfMinus1_</span> <span class='hs-str'>"setSocketOption"</span> <span class='hs-varop'>$</span>
<a name="line-999"></a> <span class='hs-varid'>c_setsockopt</span> <span class='hs-varid'>s</span> <span class='hs-varid'>level</span> <span class='hs-varid'>opt</span> <span class='hs-varid'>ptr_v</span>
<a name="line-1000"></a> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>sizeOf</span> <span class='hs-layout'>(</span><span class='hs-varid'>undefined</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-1001"></a> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-1002"></a>
<a name="line-1003"></a>
<a name="line-1004"></a><a name="getSocketOption"></a><span class='hs-comment'>-- | Get a socket option that gives an Int value.</span>
<a name="line-1005"></a><span class='hs-comment'>-- There is currently no API to get e.g. the timeval socket options</span>
<a name="line-1006"></a><span class='hs-definition'>getSocketOption</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span>
<a name="line-1007"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SocketOption</span> <span class='hs-comment'>-- Option Name</span>
<a name="line-1008"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- Option Value</span>
<a name="line-1009"></a><span class='hs-definition'>getSocketOption</span> <span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-varid'>so</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-1010"></a> <span class='hs-layout'>(</span><span class='hs-varid'>level</span><span class='hs-layout'>,</span> <span class='hs-varid'>opt</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>packSocketOption'</span> <span class='hs-str'>"getSocketOption"</span> <span class='hs-varid'>so</span>
<a name="line-1011"></a> <span class='hs-varid'>alloca</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>ptr_v</span> <span class='hs-keyglyph'>-></span>
<a name="line-1012"></a> <span class='hs-varid'>with</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-layout'>(</span><span class='hs-varid'>sizeOf</span> <span class='hs-layout'>(</span><span class='hs-varid'>undefined</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>ptr_sz</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-1013"></a> <span class='hs-varid'>throwSocketErrorIfMinus1Retry_</span> <span class='hs-str'>"getSocketOption"</span> <span class='hs-varop'>$</span>
<a name="line-1014"></a> <span class='hs-varid'>c_getsockopt</span> <span class='hs-varid'>s</span> <span class='hs-varid'>level</span> <span class='hs-varid'>opt</span> <span class='hs-varid'>ptr_v</span> <span class='hs-varid'>ptr_sz</span>
<a name="line-1015"></a> <span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>`liftM`</span> <span class='hs-varid'>peek</span> <span class='hs-varid'>ptr_v</span>
<a name="line-1016"></a>
<a name="line-1017"></a>
<a name="line-1018"></a>
<a name="line-1019"></a><a name="getPeerCred"></a><span class='hs-comment'>{-# LINE 962 "Network/Socket.hsc" #-}</span>
<a name="line-1020"></a><span class='hs-comment'>-- | Returns the processID, userID and groupID of the socket's peer.</span>
<a name="line-1021"></a><span class='hs-comment'>--</span>
<a name="line-1022"></a><span class='hs-comment'>-- Only available on platforms that support SO_PEERCRED or GETPEEREID(3)</span>
<a name="line-1023"></a><span class='hs-comment'>-- on domain sockets.</span>
<a name="line-1024"></a><span class='hs-comment'>-- GETPEEREID(3) returns userID and groupID. processID is always 0.</span>
<a name="line-1025"></a><span class='hs-definition'>getPeerCred</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>CUInt</span><span class='hs-layout'>,</span> <span class='hs-conid'>CUInt</span><span class='hs-layout'>,</span> <span class='hs-conid'>CUInt</span><span class='hs-layout'>)</span>
<a name="line-1026"></a><span class='hs-definition'>getPeerCred</span> <span class='hs-varid'>sock</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-1027"></a>
<a name="line-1028"></a><span class='hs-comment'>{-# LINE 970 "Network/Socket.hsc" #-}</span>
<a name="line-1029"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>fd</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fdSocket</span> <span class='hs-varid'>sock</span>
<a name="line-1030"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>sz</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-num'>12</span><span class='hs-layout'>)</span>
<a name="line-1031"></a><span class='hs-comment'>{-# LINE 972 "Network/Socket.hsc" #-}</span>
<a name="line-1032"></a> <span class='hs-varid'>allocaBytes</span> <span class='hs-varid'>sz</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span> <span class='hs-varid'>ptr_cr</span> <span class='hs-keyglyph'>-></span>
<a name="line-1033"></a> <span class='hs-varid'>with</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>sz</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span> <span class='hs-varid'>ptr_sz</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-1034"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-varop'>$</span><span class='hs-layout'>)</span> <span class='hs-varid'>throwSocketErrorIfMinus1Retry</span> <span class='hs-str'>"getPeerCred"</span> <span class='hs-varop'>$</span>
<a name="line-1035"></a> <span class='hs-varid'>c_getsockopt</span> <span class='hs-varid'>fd</span> <span class='hs-layout'>(</span><span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-num'>17</span><span class='hs-layout'>)</span> <span class='hs-varid'>ptr_cr</span> <span class='hs-varid'>ptr_sz</span>
<a name="line-1036"></a><span class='hs-comment'>{-# LINE 976 "Network/Socket.hsc" #-}</span>
<a name="line-1037"></a> <span class='hs-varid'>pid</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>ptr_cr</span>
<a name="line-1038"></a><span class='hs-comment'>{-# LINE 977 "Network/Socket.hsc" #-}</span>
<a name="line-1039"></a> <span class='hs-varid'>uid</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>4</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>ptr_cr</span>
<a name="line-1040"></a><span class='hs-comment'>{-# LINE 978 "Network/Socket.hsc" #-}</span>
<a name="line-1041"></a> <span class='hs-varid'>gid</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>8</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>ptr_cr</span>
<a name="line-1042"></a><span class='hs-comment'>{-# LINE 979 "Network/Socket.hsc" #-}</span>
<a name="line-1043"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>pid</span><span class='hs-layout'>,</span> <span class='hs-varid'>uid</span><span class='hs-layout'>,</span> <span class='hs-varid'>gid</span><span class='hs-layout'>)</span>
<a name="line-1044"></a>
<a name="line-1045"></a><span class='hs-comment'>{-# LINE 984 "Network/Socket.hsc" #-}</span>
<a name="line-1046"></a>
<a name="line-1047"></a>
<a name="line-1048"></a><span class='hs-comment'>{-# LINE 999 "Network/Socket.hsc" #-}</span>
<a name="line-1049"></a>
<a name="line-1050"></a><span class='hs-comment'>{-# LINE 1000 "Network/Socket.hsc" #-}</span>
<a name="line-1051"></a>
<a name="line-1052"></a><span class='hs-cpp'>#if !(MIN_VERSION_base(4,3,1))</span>
<a name="line-1053"></a><a name="closeFdWith"></a><span class='hs-definition'>closeFdWith</span> <span class='hs-varid'>closer</span> <span class='hs-varid'>fd</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>closer</span> <span class='hs-varid'>fd</span>
<a name="line-1054"></a><span class='hs-cpp'>#endif</span>
<a name="line-1055"></a>
<a name="line-1056"></a>
<a name="line-1057"></a><a name="sendFd"></a><span class='hs-comment'>{-# LINE 1006 "Network/Socket.hsc" #-}</span>
<a name="line-1058"></a><span class='hs-comment'>-- sending/receiving ancillary socket data; low-level mechanism</span>
<a name="line-1059"></a><span class='hs-comment'>-- for transmitting file descriptors, mainly.</span>
<a name="line-1060"></a><span class='hs-definition'>sendFd</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-1061"></a><span class='hs-definition'>sendFd</span> <span class='hs-varid'>sock</span> <span class='hs-varid'>outfd</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-1062"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-varop'>$</span><span class='hs-layout'>)</span> <span class='hs-varid'>throwSocketErrorWaitWrite</span> <span class='hs-varid'>sock</span> <span class='hs-str'>"sendFd"</span> <span class='hs-varop'>$</span>
<a name="line-1063"></a> <span class='hs-varid'>c_sendFd</span> <span class='hs-layout'>(</span><span class='hs-varid'>fdSocket</span> <span class='hs-varid'>sock</span><span class='hs-layout'>)</span> <span class='hs-varid'>outfd</span>
<a name="line-1064"></a> <span class='hs-comment'>-- Note: If Winsock supported FD-passing, thi would have been</span>
<a name="line-1065"></a> <span class='hs-comment'>-- incorrect (since socket FDs need to be closed via closesocket().)</span>
<a name="line-1066"></a> <span class='hs-varid'>closeFd</span> <span class='hs-varid'>outfd</span>
<a name="line-1067"></a>
<a name="line-1068"></a><a name="recvFd"></a><span class='hs-definition'>recvFd</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-1069"></a><span class='hs-definition'>recvFd</span> <span class='hs-varid'>sock</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-1070"></a> <span class='hs-varid'>theFd</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>throwSocketErrorWaitRead</span> <span class='hs-varid'>sock</span> <span class='hs-str'>"recvFd"</span> <span class='hs-varop'>$</span>
<a name="line-1071"></a> <span class='hs-varid'>c_recvFd</span> <span class='hs-layout'>(</span><span class='hs-varid'>fdSocket</span> <span class='hs-varid'>sock</span><span class='hs-layout'>)</span>
<a name="line-1072"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>theFd</span>
<a name="line-1073"></a>
<a name="line-1074"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-conid'>SAFE_ON_WIN</span> <span class='hs-str'>"sendFd"</span> <span class='hs-varid'>c_sendFd</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-1075"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-conid'>SAFE_ON_WIN</span> <span class='hs-str'>"recvFd"</span> <span class='hs-varid'>c_recvFd</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-1076"></a>
<a name="line-1077"></a>
<a name="line-1078"></a><span class='hs-comment'>{-# LINE 1026 "Network/Socket.hsc" #-}</span>
<a name="line-1079"></a>
<a name="line-1080"></a><span class='hs-comment'>-- ---------------------------------------------------------------------------</span>
<a name="line-1081"></a><span class='hs-comment'>-- Utility Functions</span>
<a name="line-1082"></a>
<a name="line-1083"></a><a name="aNY_PORT"></a><span class='hs-definition'>aNY_PORT</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>PortNumber</span>
<a name="line-1084"></a><span class='hs-definition'>aNY_PORT</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-1085"></a>
<a name="line-1086"></a><span class='hs-comment'>-- | The IPv4 wild card address.</span>
<a name="line-1087"></a>
<a name="line-1088"></a><a name="iNADDR_ANY"></a><span class='hs-definition'>iNADDR_ANY</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HostAddress</span>
<a name="line-1089"></a><span class='hs-definition'>iNADDR_ANY</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>htonl</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-layout'>)</span>
<a name="line-1090"></a><span class='hs-comment'>{-# LINE 1037 "Network/Socket.hsc" #-}</span>
<a name="line-1091"></a>
<a name="line-1092"></a><span class='hs-comment'>-- | Converts the from host byte order to network byte order.</span>
<a name="line-1093"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"htonl"</span> <span class='hs-varid'>htonl</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Word32</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word32</span>
<a name="line-1094"></a><span class='hs-comment'>-- | Converts the from network byte order to host byte order.</span>
<a name="line-1095"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"ntohl"</span> <span class='hs-varid'>ntohl</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Word32</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Word32</span>
<a name="line-1096"></a>
<a name="line-1097"></a>
<a name="line-1098"></a><span class='hs-comment'>{-# LINE 1044 "Network/Socket.hsc" #-}</span>
<a name="line-1099"></a><span class='hs-comment'>-- | The IPv6 wild card address.</span>
<a name="line-1100"></a>
<a name="line-1101"></a><a name="iN6ADDR_ANY"></a><span class='hs-definition'>iN6ADDR_ANY</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HostAddress6</span>
<a name="line-1102"></a><span class='hs-definition'>iN6ADDR_ANY</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span>
<a name="line-1103"></a>
<a name="line-1104"></a><span class='hs-comment'>{-# LINE 1049 "Network/Socket.hsc" #-}</span>
<a name="line-1105"></a>
<a name="line-1106"></a><a name="sOMAXCONN"></a><span class='hs-definition'>sOMAXCONN</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span>
<a name="line-1107"></a><span class='hs-definition'>sOMAXCONN</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>128</span>
<a name="line-1108"></a><span class='hs-comment'>{-# LINE 1052 "Network/Socket.hsc" #-}</span>
<a name="line-1109"></a>
<a name="line-1110"></a><a name="sOL_SOCKET"></a><span class='hs-definition'>sOL_SOCKET</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span>
<a name="line-1111"></a><span class='hs-definition'>sOL_SOCKET</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>1</span>
<a name="line-1112"></a><span class='hs-comment'>{-# LINE 1055 "Network/Socket.hsc" #-}</span>
<a name="line-1113"></a>
<a name="line-1114"></a>
<a name="line-1115"></a><a name="sCM_RIGHTS"></a><span class='hs-comment'>{-# LINE 1057 "Network/Socket.hsc" #-}</span>
<a name="line-1116"></a><span class='hs-definition'>sCM_RIGHTS</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span>
<a name="line-1117"></a><span class='hs-definition'>sCM_RIGHTS</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>1</span>
<a name="line-1118"></a><span class='hs-comment'>{-# LINE 1059 "Network/Socket.hsc" #-}</span>
<a name="line-1119"></a>
<a name="line-1120"></a><span class='hs-comment'>{-# LINE 1060 "Network/Socket.hsc" #-}</span>
<a name="line-1121"></a>
<a name="line-1122"></a><a name="maxListenQueue"></a><span class='hs-comment'>-- | This is the value of SOMAXCONN, typically 128.</span>
<a name="line-1123"></a><span class='hs-comment'>-- 128 is good enough for normal network servers but</span>
<a name="line-1124"></a><span class='hs-comment'>-- is too small for high performance servers.</span>
<a name="line-1125"></a><span class='hs-definition'>maxListenQueue</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span>
<a name="line-1126"></a><span class='hs-definition'>maxListenQueue</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sOMAXCONN</span>
<a name="line-1127"></a>
<a name="line-1128"></a><span class='hs-comment'>-- -----------------------------------------------------------------------------</span>
<a name="line-1129"></a>
<a name="line-1130"></a><a name="ShutdownCmd"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>ShutdownCmd</span>
<a name="line-1131"></a> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ShutdownReceive</span>
<a name="line-1132"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>ShutdownSend</span>
<a name="line-1133"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>ShutdownBoth</span>
<a name="line-1134"></a> <span class='hs-keyword'>deriving</span> <span class='hs-conid'>Typeable</span>
<a name="line-1135"></a>
<a name="line-1136"></a><a name="sdownCmdToInt"></a><span class='hs-definition'>sdownCmdToInt</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ShutdownCmd</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span>
<a name="line-1137"></a><span class='hs-definition'>sdownCmdToInt</span> <span class='hs-conid'>ShutdownReceive</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-1138"></a><span class='hs-definition'>sdownCmdToInt</span> <span class='hs-conid'>ShutdownSend</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>1</span>
<a name="line-1139"></a><span class='hs-definition'>sdownCmdToInt</span> <span class='hs-conid'>ShutdownBoth</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>2</span>
<a name="line-1140"></a>
<a name="line-1141"></a><a name="shutdown"></a><span class='hs-comment'>-- | Shut down one or both halves of the connection, depending on the</span>
<a name="line-1142"></a><span class='hs-comment'>-- second argument to the function. If the second argument is</span>
<a name="line-1143"></a><span class='hs-comment'>-- 'ShutdownReceive', further receives are disallowed. If it is</span>
<a name="line-1144"></a><span class='hs-comment'>-- 'ShutdownSend', further sends are disallowed. If it is</span>
<a name="line-1145"></a><span class='hs-comment'>-- 'ShutdownBoth', further sends and receives are disallowed.</span>
<a name="line-1146"></a><span class='hs-definition'>shutdown</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ShutdownCmd</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-1147"></a><span class='hs-definition'>shutdown</span> <span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-varid'>stype</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-1148"></a> <span class='hs-varid'>throwSocketErrorIfMinus1Retry_</span> <span class='hs-str'>"shutdown"</span> <span class='hs-layout'>(</span><span class='hs-varid'>c_shutdown</span> <span class='hs-varid'>s</span> <span class='hs-layout'>(</span><span class='hs-varid'>sdownCmdToInt</span> <span class='hs-varid'>stype</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-1149"></a> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span>
<a name="line-1150"></a>
<a name="line-1151"></a><span class='hs-comment'>-- -----------------------------------------------------------------------------</span>
<a name="line-1152"></a>
<a name="line-1153"></a><a name="close"></a><span class='hs-comment'>-- | Close the socket. Sending data to or receiving data from closed socket</span>
<a name="line-1154"></a><span class='hs-comment'>-- may lead to undefined behaviour.</span>
<a name="line-1155"></a><span class='hs-definition'>close</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-1156"></a><span class='hs-definition'>close</span> <span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>socketStatus</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-1157"></a> <span class='hs-varid'>modifyMVar_</span> <span class='hs-varid'>socketStatus</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span> <span class='hs-varid'>status</span> <span class='hs-keyglyph'>-></span>
<a name="line-1158"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>status</span> <span class='hs-keyword'>of</span>
<a name="line-1159"></a> <span class='hs-conid'>ConvertedToHandle</span> <span class='hs-keyglyph'>-></span>
<a name="line-1160"></a> <span class='hs-varid'>ioError</span> <span class='hs-layout'>(</span><span class='hs-varid'>userError</span> <span class='hs-layout'>(</span><span class='hs-str'>"close: converted to a Handle, use hClose instead"</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-1161"></a> <span class='hs-conid'>Closed</span> <span class='hs-keyglyph'>-></span>
<a name="line-1162"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>status</span>
<a name="line-1163"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>closeFdWith</span> <span class='hs-layout'>(</span><span class='hs-varid'>closeFd</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fromIntegral</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-conid'>Closed</span>
<a name="line-1164"></a>
<a name="line-1165"></a><span class='hs-comment'>-- -----------------------------------------------------------------------------</span>
<a name="line-1166"></a>
<a name="line-1167"></a><a name="isConnected"></a><span class='hs-comment'>-- | Determines whether 'close' has been used on the 'Socket'. This</span>
<a name="line-1168"></a><span class='hs-comment'>-- does /not/ indicate any status about the socket beyond this. If the</span>
<a name="line-1169"></a><span class='hs-comment'>-- socket has been closed remotely, this function can still return</span>
<a name="line-1170"></a><span class='hs-comment'>-- 'True'.</span>
<a name="line-1171"></a><span class='hs-definition'>isConnected</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Bool</span>
<a name="line-1172"></a><span class='hs-definition'>isConnected</span> <span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>status</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-1173"></a> <span class='hs-varid'>value</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readMVar</span> <span class='hs-varid'>status</span>
<a name="line-1174"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>value</span> <span class='hs-varop'>==</span> <span class='hs-conid'>Connected</span><span class='hs-layout'>)</span>
<a name="line-1175"></a>
<a name="line-1176"></a><span class='hs-comment'>-- -----------------------------------------------------------------------------</span>
<a name="line-1177"></a><span class='hs-comment'>-- Socket Predicates</span>
<a name="line-1178"></a>
<a name="line-1179"></a><a name="isBound"></a><span class='hs-definition'>isBound</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Bool</span>
<a name="line-1180"></a><span class='hs-definition'>isBound</span> <span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>status</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-1181"></a> <span class='hs-varid'>value</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readMVar</span> <span class='hs-varid'>status</span>
<a name="line-1182"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>value</span> <span class='hs-varop'>==</span> <span class='hs-conid'>Bound</span><span class='hs-layout'>)</span>
<a name="line-1183"></a>
<a name="line-1184"></a><a name="isListening"></a><span class='hs-definition'>isListening</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Bool</span>
<a name="line-1185"></a><span class='hs-definition'>isListening</span> <span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>status</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-1186"></a> <span class='hs-varid'>value</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readMVar</span> <span class='hs-varid'>status</span>
<a name="line-1187"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>value</span> <span class='hs-varop'>==</span> <span class='hs-conid'>Listening</span><span class='hs-layout'>)</span>
<a name="line-1188"></a>
<a name="line-1189"></a><a name="isReadable"></a><span class='hs-definition'>isReadable</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Bool</span>
<a name="line-1190"></a><span class='hs-definition'>isReadable</span> <span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>status</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-1191"></a> <span class='hs-varid'>value</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readMVar</span> <span class='hs-varid'>status</span>
<a name="line-1192"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>value</span> <span class='hs-varop'>==</span> <span class='hs-conid'>Listening</span> <span class='hs-varop'>||</span> <span class='hs-varid'>value</span> <span class='hs-varop'>==</span> <span class='hs-conid'>Connected</span><span class='hs-layout'>)</span>
<a name="line-1193"></a>
<a name="line-1194"></a><a name="isWritable"></a><span class='hs-definition'>isWritable</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Bool</span>
<a name="line-1195"></a><span class='hs-definition'>isWritable</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>isReadable</span> <span class='hs-comment'>-- sort of.</span>
<a name="line-1196"></a>
<a name="line-1197"></a><a name="isAcceptable"></a><span class='hs-definition'>isAcceptable</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Bool</span>
<a name="line-1198"></a>
<a name="line-1199"></a><span class='hs-comment'>{-# LINE 1138 "Network/Socket.hsc" #-}</span>
<a name="line-1200"></a><span class='hs-definition'>isAcceptable</span> <span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>AF_UNIX</span> <span class='hs-varid'>x</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>status</span><span class='hs-layout'>)</span>
<a name="line-1201"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-conid'>Stream</span> <span class='hs-varop'>||</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-conid'>SeqPacket</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-1202"></a> <span class='hs-varid'>value</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readMVar</span> <span class='hs-varid'>status</span>
<a name="line-1203"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>value</span> <span class='hs-varop'>==</span> <span class='hs-conid'>Connected</span> <span class='hs-varop'>||</span> <span class='hs-varid'>value</span> <span class='hs-varop'>==</span> <span class='hs-conid'>Bound</span> <span class='hs-varop'>||</span> <span class='hs-varid'>value</span> <span class='hs-varop'>==</span> <span class='hs-conid'>Listening</span><span class='hs-layout'>)</span>
<a name="line-1204"></a><span class='hs-definition'>isAcceptable</span> <span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>AF_UNIX</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>False</span>
<a name="line-1205"></a>
<a name="line-1206"></a><span class='hs-comment'>{-# LINE 1144 "Network/Socket.hsc" #-}</span>
<a name="line-1207"></a><span class='hs-definition'>isAcceptable</span> <span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>status</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-1208"></a> <span class='hs-varid'>value</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readMVar</span> <span class='hs-varid'>status</span>
<a name="line-1209"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>value</span> <span class='hs-varop'>==</span> <span class='hs-conid'>Connected</span> <span class='hs-varop'>||</span> <span class='hs-varid'>value</span> <span class='hs-varop'>==</span> <span class='hs-conid'>Listening</span><span class='hs-layout'>)</span>
<a name="line-1210"></a>
<a name="line-1211"></a><span class='hs-comment'>-- -----------------------------------------------------------------------------</span>
<a name="line-1212"></a><span class='hs-comment'>-- Internet address manipulation routines:</span>
<a name="line-1213"></a>
<a name="line-1214"></a><a name="inet_addr"></a><span class='hs-definition'>inet_addr</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>HostAddress</span>
<a name="line-1215"></a><span class='hs-definition'>inet_addr</span> <span class='hs-varid'>ipstr</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withSocketsDo</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-1216"></a> <span class='hs-varid'>withCString</span> <span class='hs-varid'>ipstr</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-1217"></a> <span class='hs-varid'>had</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>c_inet_addr</span> <span class='hs-varid'>str</span>
<a name="line-1218"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>had</span> <span class='hs-varop'>==</span> <span class='hs-comment'>-</span><span class='hs-num'>1</span>
<a name="line-1219"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>ioError</span> <span class='hs-layout'>(</span><span class='hs-varid'>userError</span> <span class='hs-layout'>(</span><span class='hs-str'>"inet_addr: Malformed address: "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>ipstr</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-1220"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-varid'>had</span> <span class='hs-comment'>-- network byte order</span>
<a name="line-1221"></a>
<a name="line-1222"></a><a name="inet_ntoa"></a><span class='hs-definition'>inet_ntoa</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HostAddress</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>String</span>
<a name="line-1223"></a><span class='hs-definition'>inet_ntoa</span> <span class='hs-varid'>haddr</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withSocketsDo</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span>
<a name="line-1224"></a> <span class='hs-varid'>pstr</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>c_inet_ntoa</span> <span class='hs-varid'>haddr</span>
<a name="line-1225"></a> <span class='hs-varid'>peekCString</span> <span class='hs-varid'>pstr</span>
<a name="line-1226"></a>
<a name="line-1227"></a><span class='hs-comment'>-- | Turns a Socket into an 'Handle'. By default, the new handle is</span>
<a name="line-1228"></a><span class='hs-comment'>-- unbuffered. Use 'System.IO.hSetBuffering' to change the buffering.</span>
<a name="line-1229"></a><span class='hs-comment'>--</span>
<a name="line-1230"></a><span class='hs-comment'>-- Note that since a 'Handle' is automatically closed by a finalizer</span>
<a name="line-1231"></a><span class='hs-comment'>-- when it is no longer referenced, you should avoid doing any more</span>
<a name="line-1232"></a><span class='hs-comment'>-- operations on the 'Socket' after calling 'socketToHandle'. To</span>
<a name="line-1233"></a><span class='hs-comment'>-- close the 'Socket' after 'socketToHandle', call 'System.IO.hClose'</span>
<a name="line-1234"></a><span class='hs-comment'>-- on the 'Handle'.</span>
<a name="line-1235"></a>
<a name="line-1236"></a><a name="socketToHandle"></a><span class='hs-definition'>socketToHandle</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IOMode</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Handle</span>
<a name="line-1237"></a><span class='hs-definition'>socketToHandle</span> <span class='hs-varid'>s</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>MkSocket</span> <span class='hs-varid'>fd</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>socketStatus</span><span class='hs-layout'>)</span> <span class='hs-varid'>mode</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-1238"></a> <span class='hs-varid'>modifyMVar</span> <span class='hs-varid'>socketStatus</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span> <span class='hs-varid'>status</span> <span class='hs-keyglyph'>-></span>
<a name="line-1239"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>status</span> <span class='hs-varop'>==</span> <span class='hs-conid'>ConvertedToHandle</span>
<a name="line-1240"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>ioError</span> <span class='hs-layout'>(</span><span class='hs-varid'>userError</span> <span class='hs-layout'>(</span><span class='hs-str'>"socketToHandle: already a Handle"</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-1241"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>do</span>
<a name="line-1242"></a> <span class='hs-varid'>h</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fdToHandle'</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>fd</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Device</span><span class='hs-varop'>.</span><span class='hs-conid'>Stream</span><span class='hs-layout'>)</span> <span class='hs-conid'>True</span> <span class='hs-layout'>(</span><span class='hs-varid'>show</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varid'>mode</span> <span class='hs-conid'>True</span><span class='hs-comment'>{-bin-}</span>
<a name="line-1243"></a> <span class='hs-varid'>hSetBuffering</span> <span class='hs-varid'>h</span> <span class='hs-conid'>NoBuffering</span>
<a name="line-1244"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>ConvertedToHandle</span><span class='hs-layout'>,</span> <span class='hs-varid'>h</span><span class='hs-layout'>)</span>
<a name="line-1245"></a>
<a name="line-1246"></a><span class='hs-comment'>-- | Pack a list of values into a bitmask. The possible mappings from</span>
<a name="line-1247"></a><span class='hs-comment'>-- value to bit-to-set are given as the first argument. We assume</span>
<a name="line-1248"></a><span class='hs-comment'>-- that each value can cause exactly one bit to be set; unpackBits will</span>
<a name="line-1249"></a><span class='hs-comment'>-- break if this property is not true.</span>
<a name="line-1250"></a>
<a name="line-1251"></a><a name="packBits"></a><span class='hs-definition'>packBits</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Num</span> <span class='hs-varid'>b</span><span class='hs-layout'>,</span> <span class='hs-conid'>Bits</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>b</span>
<a name="line-1252"></a>
<a name="line-1253"></a><span class='hs-definition'>packBits</span> <span class='hs-varid'>mapping</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>foldl'</span> <span class='hs-varid'>pack</span> <span class='hs-num'>0</span> <span class='hs-varid'>mapping</span>
<a name="line-1254"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>pack</span> <span class='hs-varid'>acc</span> <span class='hs-layout'>(</span><span class='hs-varid'>k</span><span class='hs-layout'>,</span> <span class='hs-varid'>v</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>k</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>xs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>acc</span> <span class='hs-varop'>.|.</span> <span class='hs-varid'>v</span>
<a name="line-1255"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>acc</span>
<a name="line-1256"></a>
<a name="line-1257"></a><span class='hs-comment'>-- | Unpack a bitmask into a list of values.</span>
<a name="line-1258"></a>
<a name="line-1259"></a><a name="unpackBits"></a><span class='hs-definition'>unpackBits</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Num</span> <span class='hs-varid'>b</span><span class='hs-layout'>,</span> <span class='hs-conid'>Bits</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-1260"></a>
<a name="line-1261"></a><span class='hs-comment'>-- Be permissive and ignore unknown bit values. At least on OS X,</span>
<a name="line-1262"></a><span class='hs-comment'>-- getaddrinfo returns an ai_flags field with bits set that have no</span>
<a name="line-1263"></a><span class='hs-comment'>-- entry in <netdb.h>.</span>
<a name="line-1264"></a><span class='hs-definition'>unpackBits</span> <span class='hs-conid'>[]</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-1265"></a><span class='hs-definition'>unpackBits</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>k</span><span class='hs-layout'>,</span><span class='hs-varid'>v</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-varid'>r</span>
<a name="line-1266"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>r</span> <span class='hs-varop'>.&.</span> <span class='hs-varid'>v</span> <span class='hs-varop'>/=</span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>k</span> <span class='hs-conop'>:</span> <span class='hs-varid'>unpackBits</span> <span class='hs-varid'>xs</span> <span class='hs-layout'>(</span><span class='hs-varid'>r</span> <span class='hs-varop'>.&.</span> <span class='hs-varid'>complement</span> <span class='hs-varid'>v</span><span class='hs-layout'>)</span>
<a name="line-1267"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unpackBits</span> <span class='hs-varid'>xs</span> <span class='hs-varid'>r</span>
<a name="line-1268"></a>
<a name="line-1269"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-1270"></a><span class='hs-comment'>-- Address and service lookups</span>
<a name="line-1271"></a>
<a name="line-1272"></a>
<a name="line-1273"></a><span class='hs-comment'>{-# LINE 1210 "Network/Socket.hsc" #-}</span>
<a name="line-1274"></a>
<a name="line-1275"></a><a name="AddrInfoFlag"></a><span class='hs-comment'>-- | Flags that control the querying behaviour of 'getAddrInfo'.</span>
<a name="line-1276"></a><a name="AddrInfoFlag"></a><span class='hs-comment'>-- For more information, see <https://tools.ietf.org/html/rfc3493#page-25></span>
<a name="line-1277"></a><a name="AddrInfoFlag"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>AddrInfoFlag</span> <span class='hs-keyglyph'>=</span>
<a name="line-1278"></a> <span class='hs-comment'>-- | The list of returned 'AddrInfo' values will</span>
<a name="line-1279"></a> <span class='hs-comment'>-- only contain IPv4 addresses if the local system has at least</span>
<a name="line-1280"></a> <span class='hs-comment'>-- one IPv4 interface configured, and likewise for IPv6.</span>
<a name="line-1281"></a> <span class='hs-comment'>-- (Only some platforms support this.)</span>
<a name="line-1282"></a> <span class='hs-conid'>AI_ADDRCONFIG</span>
<a name="line-1283"></a> <span class='hs-comment'>-- | If 'AI_ALL' is specified, return all matching IPv6 and</span>
<a name="line-1284"></a> <span class='hs-comment'>-- IPv4 addresses. Otherwise, this flag has no effect.</span>
<a name="line-1285"></a> <span class='hs-comment'>-- (Only some platforms support this.)</span>
<a name="line-1286"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>AI_ALL</span>
<a name="line-1287"></a> <span class='hs-comment'>-- | The 'addrCanonName' field of the first returned</span>
<a name="line-1288"></a> <span class='hs-comment'>-- 'AddrInfo' will contain the "canonical name" of the host.</span>
<a name="line-1289"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>AI_CANONNAME</span>
<a name="line-1290"></a> <span class='hs-comment'>-- | The 'HostName' argument /must/ be a numeric</span>
<a name="line-1291"></a> <span class='hs-comment'>-- address in string form, and network name lookups will not be</span>
<a name="line-1292"></a> <span class='hs-comment'>-- attempted.</span>
<a name="line-1293"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>AI_NUMERICHOST</span>
<a name="line-1294"></a> <span class='hs-comment'>-- | The 'ServiceName' argument /must/ be a port</span>
<a name="line-1295"></a> <span class='hs-comment'>-- number in string form, and service name lookups will not be</span>
<a name="line-1296"></a> <span class='hs-comment'>-- attempted. (Only some platforms support this.)</span>
<a name="line-1297"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>AI_NUMERICSERV</span>
<a name="line-1298"></a> <span class='hs-comment'>-- | If no 'HostName' value is provided, the network</span>
<a name="line-1299"></a> <span class='hs-comment'>-- address in each 'SockAddr'</span>
<a name="line-1300"></a> <span class='hs-comment'>-- will be left as a "wild card", i.e. as either 'iNADDR_ANY'</span>
<a name="line-1301"></a> <span class='hs-comment'>-- or 'iN6ADDR_ANY'. This is useful for server applications that</span>
<a name="line-1302"></a> <span class='hs-comment'>-- will accept connections from any client.</span>
<a name="line-1303"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>AI_PASSIVE</span>
<a name="line-1304"></a> <span class='hs-comment'>-- | If an IPv6 lookup is performed, and no IPv6</span>
<a name="line-1305"></a> <span class='hs-comment'>-- addresses are found, IPv6-mapped IPv4 addresses will be</span>
<a name="line-1306"></a> <span class='hs-comment'>-- returned. (Only some platforms support this.)</span>
<a name="line-1307"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>AI_V4MAPPED</span>
<a name="line-1308"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span><span class='hs-layout'>,</span> <span class='hs-conid'>Read</span><span class='hs-layout'>,</span> <span class='hs-conid'>Show</span><span class='hs-layout'>,</span> <span class='hs-conid'>Typeable</span><span class='hs-layout'>)</span>
<a name="line-1309"></a>
<a name="line-1310"></a><a name="aiFlagMapping"></a><span class='hs-definition'>aiFlagMapping</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>AddrInfoFlag</span><span class='hs-layout'>,</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-1311"></a>
<a name="line-1312"></a><span class='hs-definition'>aiFlagMapping</span> <span class='hs-keyglyph'>=</span>
<a name="line-1313"></a> <span class='hs-keyglyph'>[</span>
<a name="line-1314"></a>
<a name="line-1315"></a><span class='hs-comment'>{-# LINE 1251 "Network/Socket.hsc" #-}</span>
<a name="line-1316"></a> <span class='hs-layout'>(</span><span class='hs-conid'>AI_ADDRCONFIG</span><span class='hs-layout'>,</span> <span class='hs-num'>32</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-1317"></a><span class='hs-comment'>{-# LINE 1252 "Network/Socket.hsc" #-}</span>
<a name="line-1318"></a>
<a name="line-1319"></a><span class='hs-comment'>{-# LINE 1255 "Network/Socket.hsc" #-}</span>
<a name="line-1320"></a>
<a name="line-1321"></a><span class='hs-comment'>{-# LINE 1256 "Network/Socket.hsc" #-}</span>
<a name="line-1322"></a> <span class='hs-layout'>(</span><span class='hs-conid'>AI_ALL</span><span class='hs-layout'>,</span> <span class='hs-num'>16</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-1323"></a><span class='hs-comment'>{-# LINE 1257 "Network/Socket.hsc" #-}</span>
<a name="line-1324"></a>
<a name="line-1325"></a><span class='hs-comment'>{-# LINE 1260 "Network/Socket.hsc" #-}</span>
<a name="line-1326"></a> <span class='hs-layout'>(</span><span class='hs-conid'>AI_CANONNAME</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-1327"></a><span class='hs-comment'>{-# LINE 1261 "Network/Socket.hsc" #-}</span>
<a name="line-1328"></a> <span class='hs-layout'>(</span><span class='hs-conid'>AI_NUMERICHOST</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-1329"></a><span class='hs-comment'>{-# LINE 1262 "Network/Socket.hsc" #-}</span>
<a name="line-1330"></a>
<a name="line-1331"></a><span class='hs-comment'>{-# LINE 1263 "Network/Socket.hsc" #-}</span>
<a name="line-1332"></a> <span class='hs-layout'>(</span><span class='hs-conid'>AI_NUMERICSERV</span><span class='hs-layout'>,</span> <span class='hs-num'>1024</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-1333"></a><span class='hs-comment'>{-# LINE 1264 "Network/Socket.hsc" #-}</span>
<a name="line-1334"></a>
<a name="line-1335"></a><span class='hs-comment'>{-# LINE 1267 "Network/Socket.hsc" #-}</span>
<a name="line-1336"></a> <span class='hs-layout'>(</span><span class='hs-conid'>AI_PASSIVE</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-1337"></a><span class='hs-comment'>{-# LINE 1268 "Network/Socket.hsc" #-}</span>
<a name="line-1338"></a>
<a name="line-1339"></a><span class='hs-comment'>{-# LINE 1269 "Network/Socket.hsc" #-}</span>
<a name="line-1340"></a> <span class='hs-layout'>(</span><span class='hs-conid'>AI_V4MAPPED</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>)</span>
<a name="line-1341"></a><span class='hs-comment'>{-# LINE 1270 "Network/Socket.hsc" #-}</span>
<a name="line-1342"></a>
<a name="line-1343"></a><span class='hs-comment'>{-# LINE 1273 "Network/Socket.hsc" #-}</span>
<a name="line-1344"></a> <span class='hs-keyglyph'>]</span>
<a name="line-1345"></a>
<a name="line-1346"></a><a name="addrInfoFlagImplemented"></a><span class='hs-comment'>-- | Indicate whether the given 'AddrInfoFlag' will have any effect on</span>
<a name="line-1347"></a><span class='hs-comment'>-- this system.</span>
<a name="line-1348"></a><span class='hs-definition'>addrInfoFlagImplemented</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>AddrInfoFlag</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-1349"></a><span class='hs-definition'>addrInfoFlagImplemented</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>packBits</span> <span class='hs-varid'>aiFlagMapping</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>f</span><span class='hs-keyglyph'>]</span> <span class='hs-varop'>/=</span> <span class='hs-num'>0</span>
<a name="line-1350"></a>
<a name="line-1351"></a><a name="AddrInfo"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>AddrInfo</span> <span class='hs-keyglyph'>=</span>
<a name="line-1352"></a> <span class='hs-conid'>AddrInfo</span> <span class='hs-layout'>{</span>
<a name="line-1353"></a> <span class='hs-varid'>addrFlags</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>AddrInfoFlag</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>,</span>
<a name="line-1354"></a> <span class='hs-varid'>addrFamily</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Family</span><span class='hs-layout'>,</span>
<a name="line-1355"></a> <span class='hs-varid'>addrSocketType</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SocketType</span><span class='hs-layout'>,</span>
<a name="line-1356"></a> <span class='hs-varid'>addrProtocol</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ProtocolNumber</span><span class='hs-layout'>,</span>
<a name="line-1357"></a> <span class='hs-varid'>addrAddress</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>SockAddr</span><span class='hs-layout'>,</span>
<a name="line-1358"></a> <span class='hs-varid'>addrCanonName</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>String</span>
<a name="line-1359"></a> <span class='hs-layout'>}</span>
<a name="line-1360"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span><span class='hs-layout'>,</span> <span class='hs-conid'>Show</span><span class='hs-layout'>,</span> <span class='hs-conid'>Typeable</span><span class='hs-layout'>)</span>
<a name="line-1361"></a>
<a name="line-1362"></a><a name="instance%20Storable%20AddrInfo"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Storable</span> <span class='hs-conid'>AddrInfo</span> <span class='hs-keyword'>where</span>
<a name="line-1363"></a> <span class='hs-varid'>sizeOf</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>48</span>
<a name="line-1364"></a><span class='hs-comment'>{-# LINE 1293 "Network/Socket.hsc" #-}</span>
<a name="line-1365"></a> <span class='hs-varid'>alignment</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>alignment</span> <span class='hs-layout'>(</span><span class='hs-varid'>undefined</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span>
<a name="line-1366"></a>
<a name="line-1367"></a> <span class='hs-varid'>peek</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-1368"></a> <span class='hs-varid'>ai_flags</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span>
<a name="line-1369"></a><span class='hs-comment'>{-# LINE 1297 "Network/Socket.hsc" #-}</span>
<a name="line-1370"></a> <span class='hs-varid'>ai_family</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>4</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span>
<a name="line-1371"></a><span class='hs-comment'>{-# LINE 1298 "Network/Socket.hsc" #-}</span>
<a name="line-1372"></a> <span class='hs-varid'>ai_socktype</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>8</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span>
<a name="line-1373"></a><span class='hs-comment'>{-# LINE 1299 "Network/Socket.hsc" #-}</span>
<a name="line-1374"></a> <span class='hs-varid'>ai_protocol</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>12</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span>
<a name="line-1375"></a><span class='hs-comment'>{-# LINE 1300 "Network/Socket.hsc" #-}</span>
<a name="line-1376"></a> <span class='hs-varid'>ai_addr</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>24</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>peekSockAddr</span>
<a name="line-1377"></a><span class='hs-comment'>{-# LINE 1301 "Network/Socket.hsc" #-}</span>
<a name="line-1378"></a> <span class='hs-varid'>ai_canonname_ptr</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>32</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span>
<a name="line-1379"></a><span class='hs-comment'>{-# LINE 1302 "Network/Socket.hsc" #-}</span>
<a name="line-1380"></a>
<a name="line-1381"></a> <span class='hs-varid'>ai_canonname</span> <span class='hs-keyglyph'><-</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>ai_canonname_ptr</span> <span class='hs-varop'>==</span> <span class='hs-varid'>nullPtr</span>
<a name="line-1382"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span>
<a name="line-1383"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>liftM</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-varid'>peekCString</span> <span class='hs-varid'>ai_canonname_ptr</span>
<a name="line-1384"></a>
<a name="line-1385"></a> <span class='hs-varid'>socktype</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>unpackSocketType'</span> <span class='hs-str'>"AddrInfo.peek"</span> <span class='hs-varid'>ai_socktype</span>
<a name="line-1386"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>AddrInfo</span>
<a name="line-1387"></a> <span class='hs-layout'>{</span>
<a name="line-1388"></a> <span class='hs-varid'>addrFlags</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unpackBits</span> <span class='hs-varid'>aiFlagMapping</span> <span class='hs-varid'>ai_flags</span><span class='hs-layout'>,</span>
<a name="line-1389"></a> <span class='hs-varid'>addrFamily</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unpackFamily</span> <span class='hs-varid'>ai_family</span><span class='hs-layout'>,</span>
<a name="line-1390"></a> <span class='hs-varid'>addrSocketType</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>socktype</span><span class='hs-layout'>,</span>
<a name="line-1391"></a> <span class='hs-varid'>addrProtocol</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ai_protocol</span><span class='hs-layout'>,</span>
<a name="line-1392"></a> <span class='hs-varid'>addrAddress</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ai_addr</span><span class='hs-layout'>,</span>
<a name="line-1393"></a> <span class='hs-varid'>addrCanonName</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ai_canonname</span>
<a name="line-1394"></a> <span class='hs-layout'>}</span><span class='hs-layout'>)</span>
<a name="line-1395"></a>
<a name="line-1396"></a> <span class='hs-varid'>poke</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-conid'>AddrInfo</span> <span class='hs-varid'>flags</span> <span class='hs-keyword'>family</span> <span class='hs-varid'>socketType</span> <span class='hs-varid'>protocol</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-1397"></a> <span class='hs-varid'>c_stype</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>packSocketTypeOrThrow</span> <span class='hs-str'>"AddrInfo.poke"</span> <span class='hs-varid'>socketType</span>
<a name="line-1398"></a>
<a name="line-1399"></a> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pokeByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>0</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-varid'>packBits</span> <span class='hs-varid'>aiFlagMapping</span> <span class='hs-varid'>flags</span><span class='hs-layout'>)</span>
<a name="line-1400"></a><span class='hs-comment'>{-# LINE 1322 "Network/Socket.hsc" #-}</span>
<a name="line-1401"></a> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pokeByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>4</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-varid'>packFamily</span> <span class='hs-keyword'>family</span><span class='hs-layout'>)</span>
<a name="line-1402"></a><span class='hs-comment'>{-# LINE 1323 "Network/Socket.hsc" #-}</span>
<a name="line-1403"></a> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pokeByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>8</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span> <span class='hs-varid'>c_stype</span>
<a name="line-1404"></a><span class='hs-comment'>{-# LINE 1324 "Network/Socket.hsc" #-}</span>
<a name="line-1405"></a> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pokeByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>12</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span> <span class='hs-varid'>protocol</span>
<a name="line-1406"></a><span class='hs-comment'>{-# LINE 1325 "Network/Socket.hsc" #-}</span>
<a name="line-1407"></a>
<a name="line-1408"></a> <span class='hs-comment'>-- stuff below is probably not needed, but let's zero it for safety</span>
<a name="line-1409"></a>
<a name="line-1410"></a> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pokeByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>16</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-num'>0</span><span class='hs-keyglyph'>::</span><span class='hs-conid'>CSize</span><span class='hs-layout'>)</span>
<a name="line-1411"></a><span class='hs-comment'>{-# LINE 1329 "Network/Socket.hsc" #-}</span>
<a name="line-1412"></a> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pokeByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>24</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span> <span class='hs-varid'>nullPtr</span>
<a name="line-1413"></a><span class='hs-comment'>{-# LINE 1330 "Network/Socket.hsc" #-}</span>
<a name="line-1414"></a> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pokeByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>32</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span> <span class='hs-varid'>nullPtr</span>
<a name="line-1415"></a><span class='hs-comment'>{-# LINE 1331 "Network/Socket.hsc" #-}</span>
<a name="line-1416"></a> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>pokeByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>40</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span> <span class='hs-varid'>nullPtr</span>
<a name="line-1417"></a><span class='hs-comment'>{-# LINE 1332 "Network/Socket.hsc" #-}</span>
<a name="line-1418"></a>
<a name="line-1419"></a><a name="NameInfoFlag"></a><span class='hs-comment'>-- | Flags that control the querying behaviour of 'getNameInfo'.</span>
<a name="line-1420"></a><a name="NameInfoFlag"></a><span class='hs-comment'>-- For more information, see <https://tools.ietf.org/html/rfc3493#page-30></span>
<a name="line-1421"></a><a name="NameInfoFlag"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>NameInfoFlag</span> <span class='hs-keyglyph'>=</span>
<a name="line-1422"></a> <span class='hs-comment'>-- | Resolve a datagram-based service name. This is</span>
<a name="line-1423"></a> <span class='hs-comment'>-- required only for the few protocols that have different port</span>
<a name="line-1424"></a> <span class='hs-comment'>-- numbers for their datagram-based versions than for their</span>
<a name="line-1425"></a> <span class='hs-comment'>-- stream-based versions.</span>
<a name="line-1426"></a> <span class='hs-conid'>NI_DGRAM</span>
<a name="line-1427"></a> <span class='hs-comment'>-- | If the hostname cannot be looked up, an IO error is thrown.</span>
<a name="line-1428"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>NI_NAMEREQD</span>
<a name="line-1429"></a> <span class='hs-comment'>-- | If a host is local, return only the hostname part of the FQDN.</span>
<a name="line-1430"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>NI_NOFQDN</span>
<a name="line-1431"></a> <span class='hs-comment'>-- | The name of the host is not looked up.</span>
<a name="line-1432"></a> <span class='hs-comment'>-- Instead, a numeric representation of the host's</span>
<a name="line-1433"></a> <span class='hs-comment'>-- address is returned. For an IPv4 address, this will be a</span>
<a name="line-1434"></a> <span class='hs-comment'>-- dotted-quad string. For IPv6, it will be colon-separated</span>
<a name="line-1435"></a> <span class='hs-comment'>-- hexadecimal.</span>
<a name="line-1436"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>NI_NUMERICHOST</span>
<a name="line-1437"></a> <span class='hs-comment'>-- | The name of the service is not</span>
<a name="line-1438"></a> <span class='hs-comment'>-- looked up. Instead, a numeric representation of the</span>
<a name="line-1439"></a> <span class='hs-comment'>-- service is returned.</span>
<a name="line-1440"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>NI_NUMERICSERV</span>
<a name="line-1441"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span><span class='hs-layout'>,</span> <span class='hs-conid'>Read</span><span class='hs-layout'>,</span> <span class='hs-conid'>Show</span><span class='hs-layout'>,</span> <span class='hs-conid'>Typeable</span><span class='hs-layout'>)</span>
<a name="line-1442"></a>
<a name="line-1443"></a><a name="niFlagMapping"></a><span class='hs-definition'>niFlagMapping</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>NameInfoFlag</span><span class='hs-layout'>,</span> <span class='hs-conid'>CInt</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-1444"></a>
<a name="line-1445"></a><span class='hs-definition'>niFlagMapping</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>NI_DGRAM</span><span class='hs-layout'>,</span> <span class='hs-num'>16</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-1446"></a><span class='hs-comment'>{-# LINE 1360 "Network/Socket.hsc" #-}</span>
<a name="line-1447"></a> <span class='hs-layout'>(</span><span class='hs-conid'>NI_NAMEREQD</span><span class='hs-layout'>,</span> <span class='hs-num'>8</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-1448"></a><span class='hs-comment'>{-# LINE 1361 "Network/Socket.hsc" #-}</span>
<a name="line-1449"></a> <span class='hs-layout'>(</span><span class='hs-conid'>NI_NOFQDN</span><span class='hs-layout'>,</span> <span class='hs-num'>4</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-1450"></a><span class='hs-comment'>{-# LINE 1362 "Network/Socket.hsc" #-}</span>
<a name="line-1451"></a> <span class='hs-layout'>(</span><span class='hs-conid'>NI_NUMERICHOST</span><span class='hs-layout'>,</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-1452"></a><span class='hs-comment'>{-# LINE 1363 "Network/Socket.hsc" #-}</span>
<a name="line-1453"></a> <span class='hs-layout'>(</span><span class='hs-conid'>NI_NUMERICSERV</span><span class='hs-layout'>,</span> <span class='hs-num'>2</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-1454"></a><span class='hs-comment'>{-# LINE 1364 "Network/Socket.hsc" #-}</span>
<a name="line-1455"></a>
<a name="line-1456"></a><span class='hs-comment'>-- | Default hints for address lookup with 'getAddrInfo'. The values</span>
<a name="line-1457"></a><span class='hs-comment'>-- of the 'addrAddress' and 'addrCanonName' fields are 'undefined',</span>
<a name="line-1458"></a><span class='hs-comment'>-- and are never inspected by 'getAddrInfo'.</span>
<a name="line-1459"></a><span class='hs-comment'>--</span>
<a name="line-1460"></a><span class='hs-comment'>-- >>> addrFlags defaultHints</span>
<a name="line-1461"></a><span class='hs-comment'>-- []</span>
<a name="line-1462"></a><span class='hs-comment'>-- >>> addrFamily defaultHints</span>
<a name="line-1463"></a><span class='hs-comment'>-- AF_UNSPEC</span>
<a name="line-1464"></a><span class='hs-comment'>-- >>> addrSocketType defaultHints</span>
<a name="line-1465"></a><span class='hs-comment'>-- NoSocketType</span>
<a name="line-1466"></a><span class='hs-comment'>-- >>> addrProtocol defaultHints</span>
<a name="line-1467"></a><span class='hs-comment'>-- 0</span>
<a name="line-1468"></a>
<a name="line-1469"></a><a name="defaultHints"></a><span class='hs-definition'>defaultHints</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>AddrInfo</span>
<a name="line-1470"></a><span class='hs-definition'>defaultHints</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>AddrInfo</span> <span class='hs-layout'>{</span>
<a name="line-1471"></a> <span class='hs-varid'>addrFlags</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span><span class='hs-layout'>,</span>
<a name="line-1472"></a> <span class='hs-varid'>addrFamily</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>AF_UNSPEC</span><span class='hs-layout'>,</span>
<a name="line-1473"></a> <span class='hs-varid'>addrSocketType</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>NoSocketType</span><span class='hs-layout'>,</span>
<a name="line-1474"></a> <span class='hs-varid'>addrProtocol</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>defaultProtocol</span><span class='hs-layout'>,</span>
<a name="line-1475"></a> <span class='hs-varid'>addrAddress</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>undefined</span><span class='hs-layout'>,</span>
<a name="line-1476"></a> <span class='hs-varid'>addrCanonName</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>undefined</span>
<a name="line-1477"></a> <span class='hs-layout'>}</span>
<a name="line-1478"></a>
<a name="line-1479"></a><span class='hs-comment'>-- | Resolve a host or service name to one or more addresses.</span>
<a name="line-1480"></a><span class='hs-comment'>-- The 'AddrInfo' values that this function returns contain 'SockAddr'</span>
<a name="line-1481"></a><span class='hs-comment'>-- values that you can pass directly to 'connect' or</span>
<a name="line-1482"></a><span class='hs-comment'>-- 'bind'.</span>
<a name="line-1483"></a><span class='hs-comment'>--</span>
<a name="line-1484"></a><span class='hs-comment'>-- This function is protocol independent. It can return both IPv4 and</span>
<a name="line-1485"></a><span class='hs-comment'>-- IPv6 address information.</span>
<a name="line-1486"></a><span class='hs-comment'>--</span>
<a name="line-1487"></a><span class='hs-comment'>-- The 'AddrInfo' argument specifies the preferred query behaviour,</span>
<a name="line-1488"></a><span class='hs-comment'>-- socket options, or protocol. You can override these conveniently</span>
<a name="line-1489"></a><span class='hs-comment'>-- using Haskell's record update syntax on 'defaultHints', for example</span>
<a name="line-1490"></a><span class='hs-comment'>-- as follows:</span>
<a name="line-1491"></a><span class='hs-comment'>--</span>
<a name="line-1492"></a><span class='hs-comment'>-- >>> let hints = defaultHints { addrFlags = [AI_NUMERICHOST], addrSocketType = Stream }</span>
<a name="line-1493"></a><span class='hs-comment'>--</span>
<a name="line-1494"></a><span class='hs-comment'>-- You must provide a 'Just' value for at least one of the 'HostName'</span>
<a name="line-1495"></a><span class='hs-comment'>-- or 'ServiceName' arguments. 'HostName' can be either a numeric</span>
<a name="line-1496"></a><span class='hs-comment'>-- network address (dotted quad for IPv4, colon-separated hex for</span>
<a name="line-1497"></a><span class='hs-comment'>-- IPv6) or a hostname. In the latter case, its addresses will be</span>
<a name="line-1498"></a><span class='hs-comment'>-- looked up unless 'AI_NUMERICHOST' is specified as a hint. If you</span>
<a name="line-1499"></a><span class='hs-comment'>-- do not provide a 'HostName' value /and/ do not set 'AI_PASSIVE' as</span>
<a name="line-1500"></a><span class='hs-comment'>-- a hint, network addresses in the result will contain the address of</span>
<a name="line-1501"></a><span class='hs-comment'>-- the loopback interface.</span>
<a name="line-1502"></a><span class='hs-comment'>--</span>
<a name="line-1503"></a><span class='hs-comment'>-- If the query fails, this function throws an IO exception instead of</span>
<a name="line-1504"></a><span class='hs-comment'>-- returning an empty list. Otherwise, it returns a non-empty list</span>
<a name="line-1505"></a><span class='hs-comment'>-- of 'AddrInfo' values.</span>
<a name="line-1506"></a><span class='hs-comment'>--</span>
<a name="line-1507"></a><span class='hs-comment'>-- There are several reasons why a query might result in several</span>
<a name="line-1508"></a><span class='hs-comment'>-- values. For example, the queried-for host could be multihomed, or</span>
<a name="line-1509"></a><span class='hs-comment'>-- the service might be available via several protocols.</span>
<a name="line-1510"></a><span class='hs-comment'>--</span>
<a name="line-1511"></a><span class='hs-comment'>-- Note: the order of arguments is slightly different to that defined</span>
<a name="line-1512"></a><span class='hs-comment'>-- for @getaddrinfo@ in RFC 2553. The 'AddrInfo' parameter comes first</span>
<a name="line-1513"></a><span class='hs-comment'>-- to make partial application easier.</span>
<a name="line-1514"></a><span class='hs-comment'>--</span>
<a name="line-1515"></a><span class='hs-comment'>-- >>> addr:_ <- getAddrInfo (Just hints) (Just "127.0.0.1") (Just "http")</span>
<a name="line-1516"></a><span class='hs-comment'>-- >>> addrAddress addr</span>
<a name="line-1517"></a><span class='hs-comment'>-- 127.0.0.1:80</span>
<a name="line-1518"></a>
<a name="line-1519"></a><a name="getAddrInfo"></a><span class='hs-definition'>getAddrInfo</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>AddrInfo</span> <span class='hs-comment'>-- ^ preferred socket type or protocol</span>
<a name="line-1520"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>HostName</span> <span class='hs-comment'>-- ^ host name to look up</span>
<a name="line-1521"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>ServiceName</span> <span class='hs-comment'>-- ^ service name to look up</span>
<a name="line-1522"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>AddrInfo</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ resolved addresses, with "best" first</span>
<a name="line-1523"></a>
<a name="line-1524"></a><span class='hs-definition'>getAddrInfo</span> <span class='hs-varid'>hints</span> <span class='hs-varid'>node</span> <span class='hs-varid'>service</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withSocketsDo</span> <span class='hs-varop'>$</span>
<a name="line-1525"></a> <span class='hs-varid'>maybeWith</span> <span class='hs-varid'>withCString</span> <span class='hs-varid'>node</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>c_node</span> <span class='hs-keyglyph'>-></span>
<a name="line-1526"></a> <span class='hs-varid'>maybeWith</span> <span class='hs-varid'>withCString</span> <span class='hs-varid'>service</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>c_service</span> <span class='hs-keyglyph'>-></span>
<a name="line-1527"></a> <span class='hs-varid'>maybeWith</span> <span class='hs-varid'>with</span> <span class='hs-varid'>filteredHints</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>c_hints</span> <span class='hs-keyglyph'>-></span>
<a name="line-1528"></a> <span class='hs-varid'>alloca</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>ptr_ptr_addrs</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-1529"></a> <span class='hs-varid'>ret</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>c_getaddrinfo</span> <span class='hs-varid'>c_node</span> <span class='hs-varid'>c_service</span> <span class='hs-varid'>c_hints</span> <span class='hs-varid'>ptr_ptr_addrs</span>
<a name="line-1530"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>ret</span> <span class='hs-keyword'>of</span>
<a name="line-1531"></a> <span class='hs-num'>0</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span> <span class='hs-varid'>ptr_addrs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>peek</span> <span class='hs-varid'>ptr_ptr_addrs</span>
<a name="line-1532"></a> <span class='hs-varid'>ais</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>followAddrInfo</span> <span class='hs-varid'>ptr_addrs</span>
<a name="line-1533"></a> <span class='hs-varid'>c_freeaddrinfo</span> <span class='hs-varid'>ptr_addrs</span>
<a name="line-1534"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>ais</span>
<a name="line-1535"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span> <span class='hs-varid'>err</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>gai_strerror</span> <span class='hs-varid'>ret</span>
<a name="line-1536"></a> <span class='hs-varid'>ioError</span> <span class='hs-layout'>(</span><span class='hs-varid'>ioeSetErrorString</span>
<a name="line-1537"></a> <span class='hs-layout'>(</span><span class='hs-varid'>mkIOError</span> <span class='hs-conid'>NoSuchThing</span> <span class='hs-str'>"getAddrInfo"</span> <span class='hs-conid'>Nothing</span>
<a name="line-1538"></a> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span> <span class='hs-varid'>err</span><span class='hs-layout'>)</span>
<a name="line-1539"></a> <span class='hs-comment'>-- Leaving out the service and using AI_NUMERICSERV causes a</span>
<a name="line-1540"></a> <span class='hs-comment'>-- segfault on OS X 10.8.2. This code removes AI_NUMERICSERV</span>
<a name="line-1541"></a> <span class='hs-comment'>-- (which has no effect) in that case.</span>
<a name="line-1542"></a> <span class='hs-keyword'>where</span>
<a name="line-1543"></a>
<a name="line-1544"></a><span class='hs-comment'>{-# LINE 1457 "Network/Socket.hsc" #-}</span>
<a name="line-1545"></a> <span class='hs-varid'>filteredHints</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>hints</span>
<a name="line-1546"></a>
<a name="line-1547"></a><span class='hs-comment'>{-# LINE 1459 "Network/Socket.hsc" #-}</span>
<a name="line-1548"></a>
<a name="line-1549"></a><a name="followAddrInfo"></a><span class='hs-definition'>followAddrInfo</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>AddrInfo</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>AddrInfo</span><span class='hs-keyglyph'>]</span>
<a name="line-1550"></a>
<a name="line-1551"></a><span class='hs-definition'>followAddrInfo</span> <span class='hs-varid'>ptr_ai</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>ptr_ai</span> <span class='hs-varop'>==</span> <span class='hs-varid'>nullPtr</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>[]</span>
<a name="line-1552"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-1553"></a> <span class='hs-varid'>a</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>peek</span> <span class='hs-varid'>ptr_ai</span>
<a name="line-1554"></a> <span class='hs-keyword'>as</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>hsc_ptr</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>peekByteOff</span> <span class='hs-varid'>hsc_ptr</span> <span class='hs-num'>40</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>ptr_ai</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>followAddrInfo</span>
<a name="line-1555"></a><span class='hs-comment'>{-# LINE 1466 "Network/Socket.hsc" #-}</span>
<a name="line-1556"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-conop'>:</span><span class='hs-keyword'>as</span><span class='hs-layout'>)</span>
<a name="line-1557"></a>
<a name="line-1558"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>safe</span> <span class='hs-str'>"hsnet_getaddrinfo"</span>
<a name="line-1559"></a> <span class='hs-varid'>c_getaddrinfo</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>AddrInfo</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>AddrInfo</span><span class='hs-layout'>)</span>
<a name="line-1560"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-1561"></a>
<a name="line-1562"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>safe</span> <span class='hs-str'>"hsnet_freeaddrinfo"</span>
<a name="line-1563"></a> <span class='hs-varid'>c_freeaddrinfo</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>AddrInfo</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-1564"></a>
<a name="line-1565"></a><a name="gai_strerror"></a><span class='hs-definition'>gai_strerror</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>String</span>
<a name="line-1566"></a>
<a name="line-1567"></a>
<a name="line-1568"></a><span class='hs-comment'>{-# LINE 1478 "Network/Socket.hsc" #-}</span>
<a name="line-1569"></a><span class='hs-definition'>gai_strerror</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>c_gai_strerror</span> <span class='hs-varid'>n</span> <span class='hs-varop'>>>=</span> <span class='hs-varid'>peekCString</span>
<a name="line-1570"></a>
<a name="line-1571"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>safe</span> <span class='hs-str'>"gai_strerror"</span>
<a name="line-1572"></a> <span class='hs-varid'>c_gai_strerror</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CString</span>
<a name="line-1573"></a>
<a name="line-1574"></a><span class='hs-comment'>{-# LINE 1485 "Network/Socket.hsc" #-}</span>
<a name="line-1575"></a>
<a name="line-1576"></a><a name="withCStringIf"></a><span class='hs-definition'>withCStringIf</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Bool</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>CSize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-varid'>a</span>
<a name="line-1577"></a><span class='hs-definition'>withCStringIf</span> <span class='hs-conid'>False</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-num'>0</span> <span class='hs-varid'>nullPtr</span>
<a name="line-1578"></a><span class='hs-definition'>withCStringIf</span> <span class='hs-conid'>True</span> <span class='hs-varid'>n</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>allocaBytes</span> <span class='hs-varid'>n</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-1579"></a>
<a name="line-1580"></a><span class='hs-comment'>-- | Resolve an address to a host or service name.</span>
<a name="line-1581"></a><span class='hs-comment'>-- This function is protocol independent.</span>
<a name="line-1582"></a><span class='hs-comment'>-- The list of 'NameInfoFlag' values controls query behaviour.</span>
<a name="line-1583"></a><span class='hs-comment'>--</span>
<a name="line-1584"></a><span class='hs-comment'>-- If a host or service's name cannot be looked up, then the numeric</span>
<a name="line-1585"></a><span class='hs-comment'>-- form of the address or service will be returned.</span>
<a name="line-1586"></a><span class='hs-comment'>--</span>
<a name="line-1587"></a><span class='hs-comment'>-- If the query fails, this function throws an IO exception.</span>
<a name="line-1588"></a><span class='hs-comment'>--</span>
<a name="line-1589"></a><span class='hs-comment'>-- Example:</span>
<a name="line-1590"></a><span class='hs-comment'>-- @</span>
<a name="line-1591"></a><span class='hs-comment'>-- (hostName, _) <- getNameInfo [] True False myAddress</span>
<a name="line-1592"></a><span class='hs-comment'>-- @</span>
<a name="line-1593"></a>
<a name="line-1594"></a><a name="getNameInfo"></a><span class='hs-definition'>getNameInfo</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>NameInfoFlag</span><span class='hs-keyglyph'>]</span> <span class='hs-comment'>-- ^ flags to control lookup behaviour</span>
<a name="line-1595"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span> <span class='hs-comment'>-- ^ whether to look up a hostname</span>
<a name="line-1596"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span> <span class='hs-comment'>-- ^ whether to look up a service name</span>
<a name="line-1597"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SockAddr</span> <span class='hs-comment'>-- ^ the address to look up</span>
<a name="line-1598"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Maybe</span> <span class='hs-conid'>HostName</span><span class='hs-layout'>,</span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>ServiceName</span><span class='hs-layout'>)</span>
<a name="line-1599"></a>
<a name="line-1600"></a><span class='hs-definition'>getNameInfo</span> <span class='hs-varid'>flags</span> <span class='hs-varid'>doHost</span> <span class='hs-varid'>doService</span> <span class='hs-varid'>addr</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>withSocketsDo</span> <span class='hs-varop'>$</span>
<a name="line-1601"></a> <span class='hs-varid'>withCStringIf</span> <span class='hs-varid'>doHost</span> <span class='hs-layout'>(</span><span class='hs-num'>1025</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>c_hostlen</span> <span class='hs-varid'>c_host</span> <span class='hs-keyglyph'>-></span>
<a name="line-1602"></a><span class='hs-comment'>{-# LINE 1512 "Network/Socket.hsc" #-}</span>
<a name="line-1603"></a> <span class='hs-varid'>withCStringIf</span> <span class='hs-varid'>doService</span> <span class='hs-layout'>(</span><span class='hs-num'>32</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>c_servlen</span> <span class='hs-varid'>c_serv</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-1604"></a><span class='hs-comment'>{-# LINE 1513 "Network/Socket.hsc" #-}</span>
<a name="line-1605"></a> <span class='hs-varid'>withSockAddr</span> <span class='hs-varid'>addr</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>ptr_addr</span> <span class='hs-varid'>sz</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-1606"></a> <span class='hs-varid'>ret</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>c_getnameinfo</span> <span class='hs-varid'>ptr_addr</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>sz</span><span class='hs-layout'>)</span> <span class='hs-varid'>c_host</span> <span class='hs-varid'>c_hostlen</span>
<a name="line-1607"></a> <span class='hs-varid'>c_serv</span> <span class='hs-varid'>c_servlen</span> <span class='hs-layout'>(</span><span class='hs-varid'>packBits</span> <span class='hs-varid'>niFlagMapping</span> <span class='hs-varid'>flags</span><span class='hs-layout'>)</span>
<a name="line-1608"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>ret</span> <span class='hs-keyword'>of</span>
<a name="line-1609"></a> <span class='hs-num'>0</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span>
<a name="line-1610"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>peekIf</span> <span class='hs-varid'>doIf</span> <span class='hs-varid'>c_val</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>doIf</span>
<a name="line-1611"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>liftM</span> <span class='hs-conid'>Just</span> <span class='hs-varop'>$</span> <span class='hs-varid'>peekCString</span> <span class='hs-varid'>c_val</span>
<a name="line-1612"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>return</span> <span class='hs-conid'>Nothing</span>
<a name="line-1613"></a> <span class='hs-varid'>host</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>peekIf</span> <span class='hs-varid'>doHost</span> <span class='hs-varid'>c_host</span>
<a name="line-1614"></a> <span class='hs-varid'>serv</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>peekIf</span> <span class='hs-varid'>doService</span> <span class='hs-varid'>c_serv</span>
<a name="line-1615"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>host</span><span class='hs-layout'>,</span> <span class='hs-varid'>serv</span><span class='hs-layout'>)</span>
<a name="line-1616"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span> <span class='hs-varid'>err</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>gai_strerror</span> <span class='hs-varid'>ret</span>
<a name="line-1617"></a> <span class='hs-varid'>ioError</span> <span class='hs-layout'>(</span><span class='hs-varid'>ioeSetErrorString</span>
<a name="line-1618"></a> <span class='hs-layout'>(</span><span class='hs-varid'>mkIOError</span> <span class='hs-conid'>NoSuchThing</span> <span class='hs-str'>"getNameInfo"</span> <span class='hs-conid'>Nothing</span>
<a name="line-1619"></a> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span> <span class='hs-varid'>err</span><span class='hs-layout'>)</span>
<a name="line-1620"></a>
<a name="line-1621"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>safe</span> <span class='hs-str'>"hsnet_getnameinfo"</span>
<a name="line-1622"></a> <span class='hs-varid'>c_getnameinfo</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>SockAddr</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span><span class='hs-comment'>{-CSockLen???-}</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CSize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CString</span>
<a name="line-1623"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CSize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-1624"></a>
<a name="line-1625"></a><span class='hs-comment'>{-# LINE 1533 "Network/Socket.hsc" #-}</span>
<a name="line-1626"></a>
<a name="line-1627"></a><a name="mkInvalidRecvArgError"></a><span class='hs-definition'>mkInvalidRecvArgError</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IOError</span>
<a name="line-1628"></a><span class='hs-definition'>mkInvalidRecvArgError</span> <span class='hs-varid'>loc</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ioeSetErrorString</span> <span class='hs-layout'>(</span><span class='hs-varid'>mkIOError</span>
<a name="line-1629"></a> <span class='hs-conid'>InvalidArgument</span>
<a name="line-1630"></a> <span class='hs-varid'>loc</span> <span class='hs-conid'>Nothing</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span> <span class='hs-str'>"non-positive length"</span>
<a name="line-1631"></a>
<a name="line-1632"></a><a name="mkEOFError"></a><span class='hs-definition'>mkEOFError</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IOError</span>
<a name="line-1633"></a><span class='hs-definition'>mkEOFError</span> <span class='hs-varid'>loc</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ioeSetErrorString</span> <span class='hs-layout'>(</span><span class='hs-varid'>mkIOError</span> <span class='hs-conid'>EOF</span> <span class='hs-varid'>loc</span> <span class='hs-conid'>Nothing</span> <span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span> <span class='hs-str'>"end of file"</span>
<a name="line-1634"></a>
<a name="line-1635"></a><span class='hs-comment'>-- ---------------------------------------------------------------------------</span>
<a name="line-1636"></a><span class='hs-comment'>-- foreign imports from the C library</span>
<a name="line-1637"></a>
<a name="line-1638"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"my_inet_ntoa"</span>
<a name="line-1639"></a> <span class='hs-varid'>c_inet_ntoa</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>HostAddress</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>CChar</span><span class='hs-layout'>)</span>
<a name="line-1640"></a>
<a name="line-1641"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"inet_addr"</span>
<a name="line-1642"></a> <span class='hs-varid'>c_inet_addr</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>CChar</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>HostAddress</span>
<a name="line-1643"></a>
<a name="line-1644"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"shutdown"</span>
<a name="line-1645"></a> <span class='hs-varid'>c_shutdown</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-1646"></a>
<a name="line-1647"></a><a name="closeFd"></a><span class='hs-definition'>closeFd</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-1648"></a><span class='hs-definition'>closeFd</span> <span class='hs-varid'>fd</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>throwSocketErrorIfMinus1_</span> <span class='hs-str'>"Network.Socket.close"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>c_close</span> <span class='hs-varid'>fd</span>
<a name="line-1649"></a>
<a name="line-1650"></a>
<a name="line-1651"></a><span class='hs-comment'>{-# LINE 1558 "Network/Socket.hsc" #-}</span>
<a name="line-1652"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"close"</span>
<a name="line-1653"></a> <span class='hs-varid'>c_close</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-1654"></a>
<a name="line-1655"></a><span class='hs-comment'>{-# LINE 1564 "Network/Socket.hsc" #-}</span>
<a name="line-1656"></a>
<a name="line-1657"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"socket"</span>
<a name="line-1658"></a> <span class='hs-varid'>c_socket</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-1659"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"bind"</span>
<a name="line-1660"></a> <span class='hs-varid'>c_bind</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>SockAddr</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span><span class='hs-comment'>{-CSockLen???-}</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-1661"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-conid'>SAFE_ON_WIN</span> <span class='hs-str'>"connect"</span>
<a name="line-1662"></a> <span class='hs-varid'>c_connect</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>SockAddr</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span><span class='hs-comment'>{-CSockLen???-}</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-1663"></a>
<a name="line-1664"></a><span class='hs-comment'>{-# LINE 1572 "Network/Socket.hsc" #-}</span>
<a name="line-1665"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"accept4"</span>
<a name="line-1666"></a> <span class='hs-varid'>c_accept4</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>SockAddr</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>CInt</span><span class='hs-comment'>{-CSockLen???-}</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-1667"></a>
<a name="line-1668"></a><span class='hs-comment'>{-# LINE 1578 "Network/Socket.hsc" #-}</span>
<a name="line-1669"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"listen"</span>
<a name="line-1670"></a> <span class='hs-varid'>c_listen</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-1671"></a>
<a name="line-1672"></a>
<a name="line-1673"></a><span class='hs-comment'>{-# LINE 1587 "Network/Socket.hsc" #-}</span>
<a name="line-1674"></a>
<a name="line-1675"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"send"</span>
<a name="line-1676"></a> <span class='hs-varid'>c_send</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CSize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-1677"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-conid'>SAFE_ON_WIN</span> <span class='hs-str'>"sendto"</span>
<a name="line-1678"></a> <span class='hs-varid'>c_sendto</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CSize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>SockAddr</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-1679"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"recv"</span>
<a name="line-1680"></a> <span class='hs-varid'>c_recv</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>CChar</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CSize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-1681"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-conid'>SAFE_ON_WIN</span> <span class='hs-str'>"recvfrom"</span>
<a name="line-1682"></a> <span class='hs-varid'>c_recvfrom</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CSize</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>SockAddr</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-1683"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"getpeername"</span>
<a name="line-1684"></a> <span class='hs-varid'>c_getpeername</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>SockAddr</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-1685"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"getsockname"</span>
<a name="line-1686"></a> <span class='hs-varid'>c_getsockname</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>SockAddr</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-1687"></a>
<a name="line-1688"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"getsockopt"</span>
<a name="line-1689"></a> <span class='hs-varid'>c_getsockopt</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-1690"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-conid'>CALLCONV</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"setsockopt"</span>
<a name="line-1691"></a> <span class='hs-varid'>c_setsockopt</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ptr</span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span>
<a name="line-1692"></a>
<a name="line-1693"></a>
<a name="line-1694"></a><span class='hs-comment'>{-# LINE 1610 "Network/Socket.hsc" #-}</span>
<a name="line-1695"></a><span class='hs-comment'>-- ---------------------------------------------------------------------------</span>
<a name="line-1696"></a><span class='hs-comment'>-- * Deprecated aliases</span>
<a name="line-1697"></a>
<a name="line-1698"></a><span class='hs-comment'>-- $deprecated-aliases</span>
<a name="line-1699"></a><span class='hs-comment'>--</span>
<a name="line-1700"></a><span class='hs-comment'>-- These aliases are deprecated and should not be used in new code.</span>
<a name="line-1701"></a><span class='hs-comment'>-- They will be removed in some future version of the package.</span>
<a name="line-1702"></a>
<a name="line-1703"></a><span class='hs-comment'>{-# DEPRECATED bindSocket "use 'bind'" #-}</span>
<a name="line-1704"></a>
<a name="line-1705"></a><a name="bindSocket"></a><span class='hs-comment'>-- | Deprecated alias for 'bind'.</span>
<a name="line-1706"></a><span class='hs-definition'>bindSocket</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-comment'>-- Unconnected Socket</span>
<a name="line-1707"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>SockAddr</span> <span class='hs-comment'>-- Address to Bind to</span>
<a name="line-1708"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-1709"></a><span class='hs-definition'>bindSocket</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>bind</span>
<a name="line-1710"></a>
<a name="line-1711"></a><span class='hs-comment'>{-# DEPRECATED sClose "use 'close'" #-}</span>
<a name="line-1712"></a>
<a name="line-1713"></a><a name="sClose"></a><span class='hs-comment'>-- | Deprecated alias for 'close'.</span>
<a name="line-1714"></a><span class='hs-definition'>sClose</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-1715"></a><span class='hs-definition'>sClose</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>close</span>
<a name="line-1716"></a>
<a name="line-1717"></a><span class='hs-comment'>{-# DEPRECATED sIsConnected "use 'isConnected'" #-}</span>
<a name="line-1718"></a>
<a name="line-1719"></a><a name="sIsConnected"></a><span class='hs-comment'>-- | Deprecated alias for 'isConnected'.</span>
<a name="line-1720"></a><span class='hs-definition'>sIsConnected</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Bool</span>
<a name="line-1721"></a><span class='hs-definition'>sIsConnected</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>isConnected</span>
<a name="line-1722"></a>
<a name="line-1723"></a><span class='hs-comment'>{-# DEPRECATED sIsBound "use 'isBound'" #-}</span>
<a name="line-1724"></a>
<a name="line-1725"></a><a name="sIsBound"></a><span class='hs-comment'>-- | Deprecated alias for 'isBound'.</span>
<a name="line-1726"></a><span class='hs-definition'>sIsBound</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Bool</span>
<a name="line-1727"></a><span class='hs-definition'>sIsBound</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>isBound</span>
<a name="line-1728"></a>
<a name="line-1729"></a><span class='hs-comment'>{-# DEPRECATED sIsListening "use 'isListening'" #-}</span>
<a name="line-1730"></a>
<a name="line-1731"></a><a name="sIsListening"></a><span class='hs-comment'>-- | Deprecated alias for 'isListening'.</span>
<a name="line-1732"></a><span class='hs-definition'>sIsListening</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Bool</span>
<a name="line-1733"></a><span class='hs-definition'>sIsListening</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>isListening</span>
<a name="line-1734"></a>
<a name="line-1735"></a><span class='hs-comment'>{-# DEPRECATED sIsReadable "use 'isReadable'" #-}</span>
<a name="line-1736"></a>
<a name="line-1737"></a><a name="sIsReadable"></a><span class='hs-comment'>-- | Deprecated alias for 'isReadable'.</span>
<a name="line-1738"></a><span class='hs-definition'>sIsReadable</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Bool</span>
<a name="line-1739"></a><span class='hs-definition'>sIsReadable</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>isReadable</span>
<a name="line-1740"></a>
<a name="line-1741"></a><span class='hs-comment'>{-# DEPRECATED sIsWritable "use 'isWritable'" #-}</span>
<a name="line-1742"></a>
<a name="line-1743"></a><a name="sIsWritable"></a><span class='hs-comment'>-- | Deprecated alias for 'isWritable'.</span>
<a name="line-1744"></a><span class='hs-definition'>sIsWritable</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Socket</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Bool</span>
<a name="line-1745"></a><span class='hs-definition'>sIsWritable</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>isWritable</span>
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