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<?php
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/**
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* This file is a part of Woketo package.
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*
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* (c) Nekland <[email protected]>
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*
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* For the full license, take a look to the LICENSE file
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* on the root directory of this project
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*/
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namespace Nekland\Woketo\Client;
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use Nekland\Woketo\Core\AbstractConnection;
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use Nekland\Woketo\Exception\Http\IncompleteHttpMessageException;
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use Nekland\Woketo\Exception\RuntimeException;
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use Nekland\Woketo\Exception\WebsocketException;
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use Nekland\Woketo\Http\Request;
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use Nekland\Woketo\Http\Response;
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use Nekland\Woketo\Message\MessageHandlerInterface;
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use Nekland\Woketo\Rfc6455\Frame;
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use Nekland\Woketo\Rfc6455\Handshake\ClientHandshake;
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use Nekland\Woketo\Rfc6455\MessageProcessor;
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use React\Promise\PromiseInterface;
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use React\Stream\Stream;
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class Connection extends AbstractConnection
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{
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/**
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* @var bool
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*/
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private $requestSent;
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/**
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* @var string
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*/
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private $host;
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/**
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* @var string
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*/
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private $buffer;
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public function __construct(string $uri, string $host, PromiseInterface $clientPromise, MessageProcessor $messageProcessor, MessageHandlerInterface $handler)
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{
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parent::__construct($messageProcessor, new ClientHandshake());
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$this->requestSent = false;
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$this->uri = $uri;
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$this->host = $host;
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$this->buffer = '';
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$this->handler = $handler;
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$clientPromise->then(function (Stream $stream) {
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$this->stream = $stream;
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$this->onConnection($stream);
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}, function (\Exception $error){
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$this->onError($error);
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});
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}
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private function onConnection(Stream $stream)
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{
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// This is done because the handshake should come from the client.
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$this->processHandshake('');
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$stream->on('message', function (string $data) {
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$this->onMessage($data);
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});
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}
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/**
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* @param string $data
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*/
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protected function processHandshake(string $data)
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{
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// Sending initialization request
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if (!$this->requestSent) {
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$request = Request::createClientRequest($this->uri, $this->host);
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$this->stream->write($request->getRequestAsString());
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return;
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}
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$this->buffer .= $data;
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// Receiving the response
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try {
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$response = Response::create($data);
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} catch (IncompleteHttpMessageException $e) {
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return;
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}
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// Verifying response data
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$this->handshake->verify($response);
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// Signaling the handshake is done to jump in the message exchange process
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$this->handshakeDone = true;
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$this->getHandler()->onConnection($this);
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}
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protected function processMessage(string $data)
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{
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// It may be a timeout going (we were waiting for data), let's clear it.
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if ($this->timeout !== null) {
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$this->timeout->cancel();
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$this->timeout = null;
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}
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foreach ($this->messageProcessor->onData($data, $this->stream, $this->currentMessage) as $message) {
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$this->currentMessage = $message;
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if ($this->currentMessage->isComplete()) {
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// Sending the message through the woketo API.
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switch($this->currentMessage->getOpcode()) {
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case Frame::OP_TEXT:
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$this->getHandler()->onMessage($this->currentMessage->getContent(), $this);
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break;
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case Frame::OP_BINARY:
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$this->getHandler()->onBinary($this->currentMessage->getContent(), $this);
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break;
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}
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$this->currentMessage = null;
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} else {
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// We wait for more data so we start a timeout.
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$this->timeout = $this->loop->addTimer(Connection::DEFAULT_TIMEOUT, function () {
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$this->logger->notice('Connection to ' . $this->getIp() . ' timed out.');
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$this->messageProcessor->timeout($this->stream);
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});
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}
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}
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}
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/**
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* @param string|Frame $frame
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* @param int $opCode An int representing binary or text data (const of Frame class)
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* @throws \Nekland\Woketo\Exception\RuntimeException
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*/
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public function write($frame, int $opCode = Frame::OP_TEXT)
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{
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try {
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$this->messageProcessor->writeMasked($frame, $this->stream, $opCode);
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} catch (WebsocketException $e) {
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throw new RuntimeException($e);
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}
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}
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/**
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* @param \Exception|string $error
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*/
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private function onError($error)
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{
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$error = $error instanceof \Exception ? $error->getMessage() : $error;
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$this->logger->error(sprintf('An error occured: %s', $error));
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}
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}
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Nekland /
Woketo
Our type inference engine has found a suspicous assignment of a value to a property. This check raises an issue when a value that can be of a given class or a super-class is assigned to a property that is type hinted more strictly.
Either this assignment is in error or an instanceof check should be added for that assignment.