<?php
use GuzzleHttp\Psr7\Message;
use GuzzleHttp\Psr7\Response;
use Ratchet\RFC6455\Handshake\PermessageDeflateOptions;
use Ratchet\RFC6455\Messaging\MessageBuffer;
use Ratchet\RFC6455\Messaging\MessageInterface;
use Ratchet\RFC6455\Messaging\FrameInterface;
use Ratchet\RFC6455\Messaging\Frame;
require_once __DIR__ . "/../bootstrap.php";
$loop = \React\EventLoop\Factory::create();
$socket = new \React\Socket\Server('0.0.0.0:9001', $loop);
$closeFrameChecker = new \Ratchet\RFC6455\Messaging\CloseFrameChecker;
$negotiator = new \Ratchet\RFC6455\Handshake\ServerNegotiator(new \Ratchet\RFC6455\Handshake\RequestVerifier, PermessageDeflateOptions::permessageDeflateSupported());
$uException = new \UnderflowException;
$socket->on('connection', function (React\Socket\ConnectionInterface $connection) use ($negotiator, $closeFrameChecker, $uException, $socket) {
$headerComplete = false;
$buffer = '';
$parser = null;
$connection->on('data', function ($data) use ($connection, &$parser, &$headerComplete, &$buffer, $negotiator, $closeFrameChecker, $uException, $socket) {
if ($headerComplete) {
$parser->onData($data);
return;
}
$buffer .= $data;
$parts = explode("\r\n\r\n", $buffer);
if (count($parts) < 2) {
return;
}
$headerComplete = true;
$psrRequest = Message::parseRequest($parts[0] . "\r\n\r\n");
$negotiatorResponse = $negotiator->handshake($psrRequest);
$negotiatorResponse = $negotiatorResponse->withAddedHeader("Content-Length", "0");
if ($negotiatorResponse->getStatusCode() !== 101 && $psrRequest->getUri()->getPath() === '/shutdown') {
$connection->end(Message::toString(new Response(200, [], 'Shutting down echo server.' . PHP_EOL)));
$socket->close();
return;
};
$connection->write(Message::toString($negotiatorResponse));
if ($negotiatorResponse->getStatusCode() !== 101) {
$connection->end();
return;
}
// there is no need to look through the client requests
// we support any valid permessage deflate
$deflateOptions = PermessageDeflateOptions::fromRequestOrResponse($psrRequest)[0];
$parser = new \Ratchet\RFC6455\Messaging\MessageBuffer($closeFrameChecker,
function (MessageInterface $message, MessageBuffer $messageBuffer) {
$messageBuffer->sendMessage($message->getPayload(), true, $message->isBinary());
}, function (FrameInterface $frame) use ($connection, &$parser) {
switch ($frame->getOpCode()) {
case Frame::OP_CLOSE:
$connection->end($frame->getContents());
break;
case Frame::OP_PING:
$connection->write($parser->newFrame($frame->getPayload(), true, Frame::OP_PONG)->getContents());
break;
}
}, true, function () use ($uException) {
return $uException;
},
null,
null,
[$connection, 'write'],
$deflateOptions);
array_shift($parts);
$parser->onData(implode("\r\n\r\n", $parts));
});
});
$loop->run();
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