HTTP 204 No Content vs 421 Misdirected Request
HTTP 204 (No Content) is a 2xx Success response, while 421 (Misdirected Request) is a 4xx Client Error response. 204 indicates that the server successfully processed the request but is not returning any content. Common for DELETE operations and form submissions that don't need a response body. In contrast, 421 means that the request was directed at a server that is unable to produce a response for the combination of scheme and authority in the URI.
描述
The server successfully processed the request but is not returning any content. Common for DELETE operations and form submissions that don't need a response body.
何时出现
After DELETE requests, PUT updates where no body is needed, or CORS preflight responses.
如何修复
No fix needed. The action was successful; there is simply no content to return.
描述
The request was directed at a server that is unable to produce a response for the combination of scheme and authority in the URI.
何时出现
With HTTP/2 when a connection is reused for a domain the certificate doesn't cover.
如何修复
Retry the request on a new connection.
主要区别
204 is a 2xx Success response, while 421 is a 4xx Client Error response.
HTTP 204: The server successfully processed the request but is not returning any content. Common for DELETE operations and form submissions that don't need a response body.
HTTP 421: The request was directed at a server that is unable to produce a response for the combination of scheme and authority in the URI.
You encounter 204 when after DELETE requests, PUT updates where no body is needed, or CORS preflight responses.
You encounter 421 when with HTTP/2 when a connection is reused for a domain the certificate doesn't cover.
何时使用哪个
For 204 (No Content): No fix needed. The action was successful; there is simply no content to return. For 421 (Misdirected Request): Retry the request on a new connection.