message: Backward compatibility for coroutine http client.
diff: @@ -252,18 +252,23 @@ static int http_client_coro_execute(zval *zobject, http_client_coro_property *hc
  if (zset && ZVAL_IS_ARRAY(zset))
  {
  vht = Z_ARRVAL_P(zset);
  - if (php_swoole_array_get_value(vht, "connect_timeout", ztmp))
  + /**
  + * timeout
  + */
  + if (php_swoole_array_get_value(vht, "timeout", ztmp))
  {
  convert_to_double(ztmp);
  + // backward compatibility
  http->connect_timeout = (double) Z_DVAL_P(ztmp);
  + http->timeout = (double) Z_DVAL_P(ztmp);
  }
  /**
  - * timeout
  + * connect timeout
  */
  - if (php_swoole_array_get_value(vht, "timeout", ztmp))
  + if (php_swoole_array_get_value(vht, "connect_timeout", ztmp))
  {
  convert_to_double(ztmp);
  - http->timeout = (double) Z_DVAL_P(ztmp);
  + http->connect_timeout = (double) Z_DVAL_P(ztmp);
  }
  /**
  * keep_alive
  @@ -314,10 +319,10 @@ static int http_client_coro_execute(zval *zobject, http_client_coro_property *hc
  }
  else
  {
  + swTraceLog(SW_TRACE_HTTP_CLIENT, "connect to server, object handle=%d, fd=%d", Z_OBJ_HANDLE_P(zobject), hcc->socket->socket->fd);
  hcc->socket->set_timeout(http->timeout);
  zend_update_property_bool(swoole_http_client_coro_ce_ptr, zobject, ZEND_STRL("connected"), 1);
  }
  - swTraceLog(SW_TRACE_HTTP_CLIENT, "connect to server, object handle=%d, fd=%d", Z_OBJ_HANDLE_P(zobject), hcc->socket->socket->fd);
  }
  // prepare before send a request
  