/usr/share/postgresql-common/t/006_next_free_port.t is in postgresql-common 181+deb9u2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 | # Check PgCommon's next_free_port()
use strict;
use lib '.';
use PgCommon;
use lib 't';
use TestLib;
use Test::More tests => $PgCommon::rpm ? 1 : 5;
# test next_free_port(). We are intentionally using nc as an external tool,
# using perl would replicate what next_free_port is doing, and that would
# be a pointless test.
use IPC::Open2;
use Time::HiRes qw(usleep);
my @pids;
# no ports open
is (next_free_port, 5432, 'next_free_port is 5432');
exit if ($PgCommon::rpm); # RedHat doesn't provide nc, stop here
# open a localhost ipv4 socket
push @pids, open2(\*CHLD_OUT, \*CHLD_IN, qw(nc -4 -q0 -l 127.0.0.1 5432));
usleep 2*$delay;
is (next_free_port, 5433, 'next_free_port detects localhost ipv4 socket');
# open a wildcard ipv4 socket
push @pids, open2(\*CHLD_OUT, \*CHLD_IN, qw(nc -4 -q0 -l 5433));
usleep $delay;
is (next_free_port, 5434, 'next_free_port detects wildcard ipv4 socket');
SKIP: {
$^V =~ /^v(\d+\.\d+)/; # parse perl version
skip "perl <= 5.10 does not have proper IPv6 support", 2 if ($1 <= 5.10);
# open a localhost ipv6 socket
push @pids, open2(\*CHLD_OUT, \*CHLD_IN, qw(nc -6 -q0 -l ::1 5434));
usleep $delay;
is (next_free_port, 5435, 'next_free_port detects localhost ipv6 socket');
# open a wildcard ipv6 socket
push @pids, open2(\*CHLD_OUT, \*CHLD_IN, qw(nc -6 -q0 -l 5435));
usleep $delay;
is (next_free_port, 5436, 'next_free_port detects wildcard ipv6 socket');
}
# clean up
kill 15, @pids;
# vim: filetype=perl
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