/** * Execute an HTTP request and return the results * * This function will throw if no connection to the server can be established or if * there is a problem during data exchange with the server. * * will restore it. * * @throws Exception * * @param string $method - HTTP request method * @param string $url - HTTP URL * @param string $data - data to post in body * @param array $customHeader - any array containing header elements * * @return HttpResponse */ private function executeRequest($method, $url, $data, $customHeader = array()) { HttpHelper::validateMethod($method); $database = $this->getDatabase(); if ($database === '') { $url = '/_db/' . '_system' . $url; } else { $url = '/_db/' . $database . $url; } // create request data if ($this->_batchRequest === false) { if ($this->_captureBatch === true) { $this->_options->offsetSet(ConnectionOptions::OPTION_BATCHPART, true); $request = HttpHelper::buildRequest($this->_options, $method, $url, $data, $customHeader); $this->_options->offsetSet(ConnectionOptions::OPTION_BATCHPART, false); } else { $request = HttpHelper::buildRequest($this->_options, $method, $url, $data, $customHeader); } if ($this->_captureBatch === true) { $batchPart = $this->doBatch($method, $request); if (!is_null($batchPart)) { return $batchPart; } } } else { $this->_batchRequest = false; $this->_options->offsetSet(ConnectionOptions::OPTION_BATCH, true); $request = HttpHelper::buildRequest($this->_options, $method, $url, $data, $customHeader); $this->_options->offsetSet(ConnectionOptions::OPTION_BATCH, false); } $traceFunc = $this->_options[ConnectionOptions::OPTION_TRACE]; if ($traceFunc) { // call tracer func if ($this->_options[ConnectionOptions::OPTION_ENHANCED_TRACE]) { list($header) = HttpHelper::parseHttpMessage($request, $url, $method); $headers = HttpHelper::parseHeaders($header); $traceFunc(new TraceRequest($headers[2], $method, $url, $data)); } else { $traceFunc('send', $request); } } // open the socket. note: this might throw if the connection cannot be established $handle = $this->getHandle(); if ($handle) { // send data and get response back if ($traceFunc) { // only issue syscall if we need it $startTime = microtime(true); } $result = HttpHelper::transfer($handle, $request); if ($traceFunc) { // only issue syscall if we need it $timeTaken = microtime(true) - $startTime; } $status = socket_get_status($handle); if ($status['timed_out']) { throw new ClientException('Got a timeout while waiting for the server\'s response', 408); } if (!$this->_useKeepAlive) { // must close the connection fclose($handle); } $response = new HttpResponse($result, $url, $method); if ($traceFunc) { // call tracer func if ($this->_options[ConnectionOptions::OPTION_ENHANCED_TRACE]) { $traceFunc(new TraceResponse($response->getHeaders(), $response->getHttpCode(), $response->getBody(), $timeTaken)); } else { $traceFunc('receive', $result); } } return $response; } throw new ClientException('Whoops, this should never happen'); }