/usr/share/perl5/Mojo/Server/Daemon.pm is in libmojolicious-perl 7.59+dfsg-1ubuntu1.
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use Mojo::Base 'Mojo::Server';
use Carp 'croak';
use Mojo::IOLoop;
use Mojo::Transaction::WebSocket;
use Mojo::URL;
use Mojo::Util 'term_escape';
use Mojo::WebSocket 'server_handshake';
use Scalar::Util 'weaken';
use constant DEBUG => $ENV{MOJO_DAEMON_DEBUG} || 0;
has acceptors => sub { [] };
has [qw(backlog max_clients silent)];
has inactivity_timeout => sub { $ENV{MOJO_INACTIVITY_TIMEOUT} // 15 };
has ioloop => sub { Mojo::IOLoop->singleton };
has listen => sub { [split ',', $ENV{MOJO_LISTEN} || 'http://*:3000'] };
has max_requests => 100;
sub DESTROY {
return if Mojo::Util::_global_destruction();
my $self = shift;
my $loop = $self->ioloop;
$loop->remove($_) for keys %{$self->{connections} || {}}, @{$self->acceptors};
}
sub ports {
[map { $_[0]->ioloop->acceptor($_)->port } @{$_[0]->acceptors}];
}
sub run {
my $self = shift;
# Make sure the event loop can be stopped in regular intervals
my $loop = $self->ioloop;
my $int = $loop->recurring(1 => sub { });
local $SIG{INT} = local $SIG{TERM} = sub { $loop->stop };
$self->start->ioloop->start;
$loop->remove($int);
}
sub start {
my $self = shift;
my $loop = $self->ioloop;
if (my $max = $self->max_clients) { $loop->max_connections($max) }
# Resume accepting connections
if (my $servers = $self->{servers}) {
push @{$self->acceptors}, $loop->acceptor(delete $servers->{$_})
for keys %$servers;
}
# Start listening
elsif (!@{$self->acceptors}) { $self->_listen($_) for @{$self->listen} }
return $self;
}
sub stop {
my $self = shift;
# Suspend accepting connections but keep listen sockets open
my $loop = $self->ioloop;
while (my $id = shift @{$self->acceptors}) {
my $server = $self->{servers}{$id} = $loop->acceptor($id);
$loop->remove($id);
$server->stop;
}
return $self;
}
sub _build_tx {
my ($self, $id, $c) = @_;
my $tx = $self->build_tx->connection($id);
$tx->res->headers->server('Mojolicious (Perl)');
my $handle = $self->ioloop->stream($id)->handle;
unless ($handle->isa('IO::Socket::UNIX')) {
$tx->local_address($handle->sockhost)->local_port($handle->sockport);
$tx->remote_address($handle->peerhost)->remote_port($handle->peerport);
}
$tx->req->url->base->scheme('https') if $c->{tls};
weaken $self;
$tx->on(
request => sub {
my $tx = shift;
my $req = $tx->req;
if (my $error = $req->error) { $self->_debug($id, $error->{message}) }
# WebSocket
if ($req->is_handshake) {
my $ws = $self->{connections}{$id}{next}
= Mojo::Transaction::WebSocket->new(handshake => $tx);
$self->emit(request => server_handshake $ws);
}
# HTTP
else { $self->emit(request => $tx) }
# Last keep-alive request or corrupted connection
my $c = $self->{connections}{$id};
$tx->res->headers->connection('close')
and ++Mojo::IOLoop->stream($id)->{closed}
if ($c->{requests} || 1) >= $self->max_requests || $req->error;
$tx->on(resume => sub { $self->_write($id) });
$self->_write($id);
}
);
# Kept alive if we have more than one request on the connection
return ++$c->{requests} > 1 ? $tx->kept_alive(1) : $tx;
}
sub _close {
my ($self, $id) = @_;
if (my $tx = $self->{connections}{$id}{tx}) { $tx->closed }
delete $self->{connections}{$id};
}
sub _debug { $_[0]->app->log->debug($_[2]) if $_[0]{connections}{$_[1]}{tx} }
sub _finish {
my ($self, $id) = @_;
# Always remove connection for WebSockets
my $c = $self->{connections}{$id};
return unless my $tx = $c->{tx};
return $self->_remove($id) if $tx->is_websocket;
# Finish transaction
delete($c->{tx})->closed;
# Upgrade connection to WebSocket
if (my $ws = delete $c->{next}) {
# Successful upgrade
if ($ws->handshake->res->code == 101) {
$c->{tx} = $ws->established(1);
weaken $self;
$ws->on(resume => sub { $self->_write($id) });
$self->_write($id);
}
# Failed upgrade
else { $ws->closed }
}
# Close connection if necessary
return $self->_remove($id) if $tx->error || !$tx->keep_alive;
# Build new transaction for leftovers
return unless length(my $leftovers = $tx->req->content->leftovers);
$tx = $c->{tx} = $self->_build_tx($id, $c);
$tx->server_read($leftovers);
}
sub _listen {
my ($self, $listen) = @_;
my $url = Mojo::URL->new($listen);
my $proto = $url->protocol;
croak qq{Invalid listen location "$listen"}
unless $proto eq 'http' || $proto eq 'https' || $proto eq 'http+unix';
my $query = $url->query;
my $options = {backlog => $self->backlog};
$options->{$_} = $query->param($_) for qw(fd single_accept reuse);
if ($proto eq 'http+unix') { $options->{path} = $url->host }
else {
if ((my $host = $url->host) ne '*') { $options->{address} = $host }
if (my $port = $url->port) { $options->{port} = $port }
}
$options->{"tls_$_"} = $query->param($_) for qw(ca ciphers version);
/^(.*)_(cert|key)$/ and $options->{"tls_$2"}{$1} = $query->param($_)
for @{$query->names};
if (my $cert = $query->param('cert')) { $options->{'tls_cert'}{''} = $cert }
if (my $key = $query->param('key')) { $options->{'tls_key'}{''} = $key }
my $verify = $query->param('verify');
$options->{tls_verify} = hex $verify if defined $verify;
my $tls = $options->{tls} = $proto eq 'https';
weaken $self;
push @{$self->acceptors}, $self->ioloop->server(
$options => sub {
my ($loop, $stream, $id) = @_;
$self->{connections}{$id} = {tls => $tls};
warn "-- Accept $id (@{[$stream->handle->peerhost]})\n" if DEBUG;
$stream->timeout($self->inactivity_timeout);
$stream->on(close => sub { $self && $self->_close($id) });
$stream->on(error =>
sub { $self && $self->app->log->error(pop) && $self->_close($id) });
$stream->on(read => sub { $self->_read($id => pop) });
$stream->on(timeout => sub { $self->_debug($id, 'Inactivity timeout') });
}
);
return if $self->silent;
$self->app->log->info(qq{Listening at "$url"});
$query->pairs([]);
$url->host('127.0.0.1') if $url->host eq '*';
say 'Server available at ', $options->{path} // $url;
}
sub _read {
my ($self, $id, $chunk) = @_;
# Make sure we have a transaction
my $c = $self->{connections}{$id};
my $tx = $c->{tx} ||= $self->_build_tx($id, $c);
warn term_escape "-- Server <<< Client (@{[_url($tx)]})\n$chunk\n" if DEBUG;
$tx->server_read($chunk);
}
sub _remove {
my ($self, $id) = @_;
$self->ioloop->remove($id);
$self->_close($id);
}
sub _url { shift->req->url->to_abs }
sub _write {
my ($self, $id) = @_;
# Protect from resume event recursion
my $c = $self->{connections}{$id};
return if !(my $tx = $c->{tx}) || $c->{writing};
local $c->{writing} = 1;
my $chunk = $tx->server_write;
warn term_escape "-- Server >>> Client (@{[_url($tx)]})\n$chunk\n" if DEBUG;
my $next = $tx->is_finished ? '_finish' : length $chunk ? '_write' : undef;
return $self->ioloop->stream($id)->write($chunk) unless $next;
weaken $self;
$self->ioloop->stream($id)->write($chunk => sub { $self->$next($id) });
}
1;
=encoding utf8
=head1 NAME
Mojo::Server::Daemon - Non-blocking I/O HTTP and WebSocket server
=head1 SYNOPSIS
use Mojo::Server::Daemon;
my $daemon = Mojo::Server::Daemon->new(listen => ['http://*:8080']);
$daemon->unsubscribe('request')->on(request => sub {
my ($daemon, $tx) = @_;
# Request
my $method = $tx->req->method;
my $path = $tx->req->url->path;
# Response
$tx->res->code(200);
$tx->res->headers->content_type('text/plain');
$tx->res->body("$method request for $path!");
# Resume transaction
$tx->resume;
});
$daemon->run;
=head1 DESCRIPTION
L<Mojo::Server::Daemon> is a full featured, highly portable non-blocking I/O
HTTP and WebSocket server, with IPv6, TLS, SNI, Comet (long polling), keep-alive
and multiple event loop support.
For better scalability (epoll, kqueue) and to provide non-blocking name
resolution, SOCKS5 as well as TLS support, the optional modules L<EV> (4.0+),
L<Net::DNS::Native> (0.15+), L<IO::Socket::Socks> (0.64+) and
L<IO::Socket::SSL> (1.94+) will be used automatically if possible. Individual
features can also be disabled with the C<MOJO_NO_NNR>, C<MOJO_NO_SOCKS> and
C<MOJO_NO_TLS> environment variables.
See L<Mojolicious::Guides::Cookbook/"DEPLOYMENT"> for more.
=head1 SIGNALS
The L<Mojo::Server::Daemon> process can be controlled at runtime with the
following signals.
=head2 INT, TERM
Shut down server immediately.
=head1 EVENTS
L<Mojo::Server::Daemon> inherits all events from L<Mojo::Server>.
=head1 ATTRIBUTES
L<Mojo::Server::Daemon> inherits all attributes from L<Mojo::Server> and
implements the following new ones.
=head2 acceptors
my $acceptors = $daemon->acceptors;
$daemon = $daemon->acceptors(['6be0c140ef00a389c5d039536b56d139']);
Active acceptor ids.
# Check port
mu $port = $daemon->ioloop->acceptor($daemon->acceptors->[0])->port;
=head2 backlog
my $backlog = $daemon->backlog;
$daemon = $daemon->backlog(128);
Listen backlog size, defaults to C<SOMAXCONN>.
=head2 inactivity_timeout
my $timeout = $daemon->inactivity_timeout;
$daemon = $daemon->inactivity_timeout(5);
Maximum amount of time in seconds a connection can be inactive before getting
closed, defaults to the value of the C<MOJO_INACTIVITY_TIMEOUT> environment
variable or C<15>. Setting the value to C<0> will allow connections to be
inactive indefinitely.
=head2 ioloop
my $loop = $daemon->ioloop;
$daemon = $daemon->ioloop(Mojo::IOLoop->new);
Event loop object to use for I/O operations, defaults to the global
L<Mojo::IOLoop> singleton.
=head2 listen
my $listen = $daemon->listen;
$daemon = $daemon->listen(['https://127.0.0.1:8080']);
Array reference with one or more locations to listen on, defaults to the value
of the C<MOJO_LISTEN> environment variable or C<http://*:3000> (shortcut for
C<http://0.0.0.0:3000>).
# Listen on all IPv4 interfaces
$daemon->listen(['http://*:3000']);
# Listen on all IPv4 and IPv6 interfaces
$daemon->listen(['http://[::]:3000']);
# Listen on IPv6 interface
$daemon->listen(['http://[::1]:4000']);
# Listen on IPv4 and IPv6 interfaces
$daemon->listen(['http://127.0.0.1:3000', 'http://[::1]:3000']);
# Listen on UNIX domain socket "/tmp/myapp.sock" (percent encoded slash)
$daemon->listen(['http+unix://%2Ftmp%2Fmyapp.sock']);
# File descriptor, as used by systemd
$daemon->listen(['http://127.0.0.1?fd=3']);
# Allow multiple servers to use the same port (SO_REUSEPORT)
$daemon->listen(['http://*:8080?reuse=1']);
# Listen on two ports with HTTP and HTTPS at the same time
$daemon->listen(['http://*:3000', 'https://*:4000']);
# Use a custom certificate and key
$daemon->listen(['https://*:3000?cert=/x/server.crt&key=/y/server.key']);
# Domain specific certificates and keys (SNI)
$daemon->listen(
['https://*:3000?example.com_cert=/x/my.crt&example.com_key=/y/my.key']);
# Or even a custom certificate authority
$daemon->listen(
['https://*:3000?cert=/x/server.crt&key=/y/server.key&ca=/z/ca.crt']);
These parameters are currently available:
=over 2
=item ca
ca=/etc/tls/ca.crt
Path to TLS certificate authority file used to verify the peer certificate.
=item cert
cert=/etc/tls/server.crt
mojolicious.org_cert=/etc/tls/mojo.crt
Path to the TLS cert file, defaults to a built-in test certificate.
=item ciphers
ciphers=AES128-GCM-SHA256:RC4:HIGH:!MD5:!aNULL:!EDH
TLS cipher specification string. For more information about the format see
L<https://www.openssl.org/docs/manmaster/apps/ciphers.html#CIPHER-STRINGS>.
=item fd
fd=3
File descriptor with an already prepared listen socket.
=item key
key=/etc/tls/server.key
mojolicious.org_key=/etc/tls/mojo.key
Path to the TLS key file, defaults to a built-in test key.
=item reuse
reuse=1
Allow multiple servers to use the same port with the C<SO_REUSEPORT> socket
option.
=item single_accept
single_accept=1
Only accept one connection at a time.
=item verify
verify=0x00
TLS verification mode, defaults to C<0x03> if a certificate authority file has
been provided, or C<0x00>.
=item version
version=TLSv1_2
TLS protocol version.
=back
=head2 max_clients
my $max = $daemon->max_clients;
$daemon = $daemon->max_clients(100);
Maximum number of accepted connections this server is allowed to handle
concurrently, before stopping to accept new incoming connections, passed along
to L<Mojo::IOLoop/"max_connections">.
=head2 max_requests
my $max = $daemon->max_requests;
$daemon = $daemon->max_requests(250);
Maximum number of keep-alive requests per connection, defaults to C<100>.
=head2 silent
my $bool = $daemon->silent;
$daemon = $daemon->silent($bool);
Disable console messages.
=head1 METHODS
L<Mojo::Server::Daemon> inherits all methods from L<Mojo::Server> and
implements the following new ones.
=head2 ports
my $ports = $daemon->ports;
Get all ports this server is currently listening on.
# All ports
say for @{$daemon->ports};
=head2 run
$daemon->run;
Run server and wait for L</"SIGNALS">.
=head2 start
$daemon = $daemon->start;
Start or resume accepting connections through L</"ioloop">.
# Listen on random port
my $port = $daemon->listen(['http://127.0.0.1'])->start->ports->[0];
# Run multiple web servers concurrently
my $daemon1 = Mojo::Server::Daemon->new(listen => ['http://*:3000'])->start;
my $daemon2 = Mojo::Server::Daemon->new(listen => ['http://*:4000'])->start;
Mojo::IOLoop->start unless Mojo::IOLoop->is_running;
=head2 stop
$daemon = $daemon->stop;
Stop accepting connections through L</"ioloop">.
=head1 DEBUGGING
You can set the C<MOJO_DAEMON_DEBUG> environment variable to get some advanced
diagnostics information printed to C<STDERR>.
MOJO_DAEMON_DEBUG=1
=head1 SEE ALSO
L<Mojolicious>, L<Mojolicious::Guides>, L<http://mojolicious.org>.
=cut
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