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|
#!/usr/bin/perl
# vim: filetype=perl ts=2 sw=2 expandtab
# Test connection queuing. Set the max active connection to be really
# small (one in all), and then try to allocate two connections. The
# second should queue.
use warnings;
use strict;
use lib qw(./mylib ../mylib);
use Test::More tests => 9;
use Errno qw(ECONNREFUSED ETIMEDOUT);
sub POE::Kernel::ASSERT_DEFAULT () { 1 }
use POE;
use POE::Component::Client::Keepalive;
use POE::Component::Resolver;
use Socket qw(AF_INET);
use TestServer;
diag("This test may take a long time if your firewall blackholes connections.");
my $server_port = TestServer->spawn(0);
my $unknown_port = $server_port + 1; # Kludge. Fingers crossed.
POE::Session->create(
inline_states => {
_child => sub { },
_start => \&start,
_stop => sub { },
got_error => \&got_error,
got_first_conn => \&got_first_conn,
got_third_conn => \&got_third_conn,
got_fourth_conn => \&got_fourth_conn,
got_timeout => \&got_timeout,
test_max_queue => \&test_max_queue,
}
);
sub start {
my $heap = $_[HEAP];
$heap->{cm} = POE::Component::Client::Keepalive->new(
max_open => 1,
resolver => POE::Component::Resolver->new(af_order => [ AF_INET ]),
);
# Count the number of times test_max_queue is called. When that's
# 2, we actually do the test.
$heap->{test_max_queue} = 0;
# Make two identical tests. They're both queued because the free
# pool is empty at this point.
{
$heap->{cm}->allocate(
scheme => "http",
addr => "127.0.0.1",
port => $server_port,
event => "got_first_conn",
context => "first",
);
}
{
$heap->{cm}->allocate(
scheme => "http",
addr => "127.0.0.1",
port => $server_port,
event => "got_first_conn",
context => "second",
);
}
}
sub got_first_conn {
my ($kernel, $heap, $stuff) = @_[KERNEL, HEAP, ARG0];
my $conn = delete $stuff->{connection};
my $which = $stuff->{context};
ok(defined($conn), "$which connection honored asynchronously");
if ($which eq 'first') {
ok(not (defined ($stuff->{from_cache})), "$which not from cache");
} else {
ok(defined ($stuff->{from_cache}), "$which from cache");
}
$conn = undef;
$kernel->yield("test_max_queue");
}
sub got_third_conn {
my ($kernel, $heap, $stuff) = @_[KERNEL, HEAP, ARG0];
my $conn = $stuff->{connection};
my $which = $stuff->{context};
ok(
defined($stuff->{from_cache}),
"$which connection request honored from pool"
);
$conn = undef;
}
# We need a free connection pool of 2 or more for this next test. We
# want to allocate one of them, and then attempt to allocate a
# different connection.
sub test_max_queue {
my ($kernel, $heap) = @_[KERNEL, HEAP];
$heap->{test_max_queue}++;
return unless $heap->{test_max_queue} == 2;
$heap->{cm}->allocate(
scheme => "http",
addr => "127.0.0.1",
port => $server_port,
event => "got_third_conn",
context => "third",
);
$heap->{cm}->allocate(
scheme => "http",
addr => "127.0.0.1",
port => $unknown_port,
event => "got_fourth_conn",
context => "fourth",
);
}
# This connection should fail, actually.
sub got_fourth_conn {
my ($kernel, $heap, $stuff) = @_[KERNEL, HEAP, ARG0];
my $conn = $stuff->{connection};
ok(!defined($conn), "fourth connection failed (as it should)");
ok($stuff->{function} eq "connect", "connection failed in connect");
ok(
($stuff->{error_num} == ECONNREFUSED) || ($stuff->{error_num} == ETIMEDOUT),
"connection error ECONNREFUSED"
);
my $lc_str = lc $stuff->{error_str};
$! = ECONNREFUSED;
my @wanted = ( lc "$!" );
$! = ETIMEDOUT;
push @wanted, lc "$!";
push @wanted, "unknown error" if $^O eq "MSWin32";
ok(
(grep { $lc_str eq $_ } @wanted),
"error string: wanted(connection refused) got($lc_str)"
);
# Shut things down.
TestServer->shutdown();
$heap->{cm}->shutdown();
}
POE::Kernel->run();
exit;
|
