code: protected function dispatchRequest($socket, $encoding)
      {
          foreach ($this->headers as $header_line) {
              $socket->write($header_line . "\r\n");
          }
          if (count($this->cookies) > 0) {
              $socket->write('Cookie: ' . implode(';', $this->cookies) . "\r\n");
          }
          $encoding->writeHeadersTo($socket);
          $socket->write("\r\n");
          $encoding->writeTo($socket);
      }
docs: Sends the headers.
  
  @param SimpleSocket $socket           Open socket.
  @param string $method                 HTTP request method, usually GET.
  @param SimpleFormEncoding $encoding   Content to send with request.