5×× 服务器错误
504 Gateway Timeout 网关超时
服务器在充当网关或代理时,没有从需要访问的上游服务器收到及时响应以完成请求.
- Source: RFC7231 Section 6.6.5
504 代码参考
Rails HTTP Status Symbol :gateway_timeout
Go HTTP Status Constant http.StatusGatewayTimeout
Symfony HTTP Status Constant Response::HTTP_GATEWAY_TIMEOUT
Python2 HTTP Status Constant httplib.GATEWAY_TIMEOUT
Python3+ HTTP Status Constant http.client.GATEWAY_TIMEOUT
Python3.5+ HTTP Status Constant http.HTTPStatus.GATEWAY_TIMEOUT