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.
Описание
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.
Когда вы это видите
After DELETE requests, PUT updates where no body is needed, or CORS preflight responses.
Как исправить
No fix needed. The action was successful; there is simply no content to return.
Описание
The request was directed at a server that is unable to produce a response for the combination of scheme and authority in the URI.
Когда вы это видите
With HTTP/2 when a connection is reused for a domain the certificate doesn't cover.
Как исправить
Retry the request on a new connection.
Ключевые различия
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.
Когда что использовать
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.