view proxy_websocket.t @ 1021:ebdf239722b9

Tests: relaxed proxy_cache_lock.t nolock tests to fix on Solaris. Assumed that the order of responses being arrived in nolock case may be ignored. An important part of such case is that the only last response should be cached.
author Sergey Kandaurov <pluknet@nginx.com>
date Fri, 02 Sep 2016 12:17:35 +0300
parents 882267679006
children
line wrap: on
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#!/usr/bin/perl

# (C) Maxim Dounin

# Tests for http proxy websockets support.

###############################################################################

use warnings;
use strict;

use Test::More;

use IO::Poll;
use IO::Select;
use IO::Socket::INET;

BEGIN { use FindBin; chdir($FindBin::Bin); }

use lib 'lib';
use Test::Nginx;

###############################################################################

select STDERR; $| = 1;
select STDOUT; $| = 1;

eval {
	require Protocol::WebSocket::Handshake::Client;
	require Protocol::WebSocket::Handshake::Server;
	require Protocol::WebSocket::Frame;
};

plan(skip_all => 'Protocol::WebSocket not installed') if $@;

my $t = Test::Nginx->new()->has(qw/http proxy/)
	->write_file_expand('nginx.conf', <<'EOF')->plan(26);

%%TEST_GLOBALS%%

daemon off;

events {
}

http {
    %%TEST_GLOBALS_HTTP%%

    server {
        listen       127.0.0.1:8080;
        server_name  localhost;

        location / {
            proxy_pass    http://127.0.0.1:8081;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "Upgrade";
            proxy_read_timeout 2s;
            send_timeout 2s;
        }
    }
}

EOF

$t->run_daemon(\&websocket_fake_daemon);
$t->run();

$t->waitforsocket('127.0.0.1:' . port(8081))
	or die "Can't start test backend";

###############################################################################

# establish websocket connection

my $s = websocket_connect();
ok($s, "websocket handshake");

SKIP: {
	skip "handshake failed", 22 unless $s;

	# send a frame

	websocket_write($s, 'foo');
	is(websocket_read($s), 'bar', "websocket response");

	# send some big frame

	websocket_write($s, 'foo' x 16384);
	like(websocket_read($s), qr/^(bar){16384}$/, "websocket big response");

	# send multiple frames

	for my $i (1 .. 10) {
		websocket_write($s, ('foo' x 16384) . $i);
		websocket_write($s, 'bazz' . $i);
	}

	for my $i (1 .. 10) {
		like(websocket_read($s), qr/^(bar){16384}\d+$/, "websocket $i");
		is(websocket_read($s), 'bazz' . $i, "websocket small $i");
	}
}

# establish websocket connection with some pipelined data
# and make sure they are correctly passed upstream

undef $s;
$s = websocket_connect("foo");
ok($s, "handshake pipelined");

SKIP: {
	skip "handshake failed", 2 unless $s;

	is(websocket_read($s), "bar", "response pipelined");

	websocket_write($s, "foo");
	is(websocket_read($s), "bar", "next to pipelined");
}

###############################################################################

sub websocket_connect {
	my ($message) = @_;

	my $s = IO::Socket::INET->new(
		Proto => 'tcp',
		PeerAddr => '127.0.0.1:' . port(8080)
	)
		or die "Can't connect to nginx: $!\n";

	my $h = Protocol::WebSocket::Handshake::Client->new(
		url => 'ws://localhost');

	# send request, $h->to_string

	my $buf = $h->to_string;
	$buf .= Protocol::WebSocket::Frame->new($message)->to_bytes
		if $message;

	local $SIG{PIPE} = 'IGNORE';

	log_out($buf);
	$s->syswrite($buf);

	# read response

	my $got = '';
	$buf = '';

	$s->blocking(0);
	while (IO::Select->new($s)->can_read(1.5)) {
		my $n = $s->sysread($buf, 1024);
		last unless $n;
		log_in($buf);
		$got .= $buf;
		last if $got =~ /\x0d?\x0a\x0d?\x0a$/;
	}

	# parse server response

	$h->parse($got);

	# store the rest for later websocket_read()
	# see websocket_read() for details

	${*$s}->{_websocket_frame} ||= Protocol::WebSocket::Frame->new();
	${*$s}->{_websocket_frame}->append($got);

	return $s if $h->is_done;
}

sub websocket_write {
	my ($s, $message) = @_;
	my $frame = Protocol::WebSocket::Frame->new($message);

	local $SIG{PIPE} = 'IGNORE';
	$s->blocking(1);

	log_out($frame->to_bytes);
	$s->syswrite($frame->to_bytes);
}

sub websocket_read {
	my ($s) = @_;
	my ($buf, $got);

	# store frame object in socket itself to simplify things
	# this works as $s is IO::Handle, see man IO::Handle

	${*$s}->{_websocket_frame} ||= Protocol::WebSocket::Frame->new();
	my $frame = ${*$s}->{_websocket_frame};

	$s->blocking(0);
	$got = $frame->next();
	return $got if defined $got;

	while (IO::Select->new($s)->can_read(1.5)) {
		my $n = $s->sysread($buf, 65536);
		return $got unless $n;
		log_in($buf);
		$frame->append($buf);
		$got = $frame->next();
		return $got if defined $got;
	}
}

###############################################################################

sub websocket_fake_daemon {
	my $server = IO::Socket::INET->new(
		Proto => 'tcp',
		LocalAddr => '127.0.0.1:' . port(8081),
		Listen => 5,
		Reuse => 1
	)
		or die "Can't create listening socket: $!\n";

	while (my $client = $server->accept()) {
		websocket_handle_client($client);
	}
}

sub websocket_handle_client {
	my ($client) = @_;

	$client->autoflush(1);
	$client->blocking(0);

	my $poll = IO::Poll->new;

	my $hs = Protocol::WebSocket::Handshake::Server->new;
	my $frame = Protocol::WebSocket::Frame->new;
	my $buffer = '';
	my $closed;
	my $n;

	log2c("(new connection $client)");

	while (1) {
		$poll->mask($client => ($buffer ? POLLIN|POLLOUT : POLLIN));
		my $p = $poll->poll(0.5);
		log2c("(poll $p)");

		foreach ($poll->handles(POLLIN)) {
			$n = $client->sysread(my $chunk, 65536);
			return unless $n;

			log2i($chunk);

			if (!$hs->is_done) {
				unless (defined $hs->parse($chunk)) {
					log2c("(error: " . $hs->error . ")");
					return;
				}

				if ($hs->is_done) {
					$buffer = $hs->to_string;
					log2o($buffer);
				}

				log2c("(parse: $chunk)");
			}

			$frame->append($chunk);

			while (defined(my $message = $frame->next)) {
				my $f;

				if ($frame->is_close) {
					log2c("(close frame)");
					$closed = 1;
					$f = $frame->new(type => 'close')
						->to_bytes;
				} else {
					$message =~ s/foo/bar/g;
					$f = $frame->new($message)->to_bytes;
				}

				log2o($f);
				$buffer .= $f;
			}
		}

		foreach my $writer ($poll->handles(POLLOUT)) {
			next unless length $buffer;
			$n = $writer->syswrite($buffer);
			substr $buffer, 0, $n, '';
		}

		if ($closed && length $buffer == 0) {
			log2c("(closed)");
			return;
		}
	}
}

sub log2i { Test::Nginx::log_core('|| <<', @_); }
sub log2o { Test::Nginx::log_core('|| >>', @_); }
sub log2c { Test::Nginx::log_core('||', @_); }

###############################################################################