What status code is returned when http request times out?

The status code returned by http request timeout has four common possibilities: "504", "408", "502" and "503": 1. 504, indicating that the request is forwarded to the upstream server by the proxy server , the upstream server times out and does not respond; 2. 408, indicates that the request sent by the client exceeds the time allowed by the server; 3. 502, indicates that the gateway server received an invalid response from the upstream server when trying to complete the request; 4. 503, Indicates that the server is temporarily unable to process the request.

# Operating system for this tutorial: Windows 10 system, Dell G3 computer.

When an HTTP request times out, the server may return different status codes, depending on the server's configuration and implementation. Here are some common possibilities:

1. 504 Gateway Timeout: This status code indicates that when the request was forwarded by the proxy server to the upstream server, the upstream server timed out and did not respond.

2. 408 Request Timeout: This status code indicates that the request sent by the client exceeds the time allowed by the server.

3. 502 Bad Gateway: This status code indicates that the gateway server received an invalid response from the upstream server while trying to complete the request.

4. 503 Service Unavailable: This status code indicates that the server is temporarily unable to process the request, usually due to server overload or maintenance.

It should be noted that different servers and applications may return different status codes based on their own needs and configurations. Therefore, in actual use, it is best to check the documentation of the server or application for accurate information.

The above is the detailed content of What status code is returned when http request times out?. For more information, please follow other related articles on the PHP Chinese website!