HTTP 204 No Content vs 417 Expectation Failed
HTTP 204 (No Content) is a 2xx Success response, while 417 (Expectation Failed) 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, 417 means that the server cannot meet the requirements of the Expect header.
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 server cannot meet the requirements of the Expect header.
Когда вы это видите
When the server doesn't support Expect: 100-continue.
Как исправить
Remove the Expect header from your request.
Ключевые различия
204 is a 2xx Success response, while 417 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 417: The server cannot meet the requirements of the Expect header.
You encounter 204 when after DELETE requests, PUT updates where no body is needed, or CORS preflight responses.
You encounter 417 when when the server doesn't support Expect: 100-continue.
Когда что использовать
For 204 (No Content): No fix needed. The action was successful; there is simply no content to return. For 417 (Expectation Failed): Remove the Expect header from your request.