Swoole\Response::setHeader PHP Method

    function setHeader($key, $value)
    {
        $this->head[$key] = $value;
    }

 /**
  * 定时器，检查某些连接是否已超过最大时间
  * @param $timerId
  */
 function onTimer($timerId)
 {
     $now = time();
     //echo "timer $interval\n";
     foreach ($this->wait_requests as $id => $request) {
         if ($request->time < $now - $this->request_timeout) {
             $response = new Swoole\Response();
             $response->setHeader('Access-Control-Allow-Origin', $this->origin);
             $response->body = json_encode(array('success' => 0, 'text' => 'timeout'));
             $this->response($request, $response);
             unset($this->wait_requests[$id]);
         }
     }
 }