HTTP 204 No Content vs 451 Unavailable For Legal Reasons
HTTP 204 (No Content) is a 2xx Success response, while 451 (Unavailable For Legal Reasons) 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, 451 means that the server is denying access to the resource as a consequence of a legal demand. Named after Ray Bradbury's Fahrenheit 451.
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 is denying access to the resource as a consequence of a legal demand. Named after Ray Bradbury's Fahrenheit 451.
Когда вы это видите
When content is blocked due to court orders, GDPR requests, or government censorship.
Как исправить
No technical fix. The block is legally mandated. Contact the site operator for details.
Ключевые различия
204 is a 2xx Success response, while 451 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 451: The server is denying access to the resource as a consequence of a legal demand. Named after Ray Bradbury's Fahrenheit 451.
You encounter 204 when after DELETE requests, PUT updates where no body is needed, or CORS preflight responses.
You encounter 451 when when content is blocked due to court orders, GDPR requests, or government censorship.
Когда что использовать
For 204 (No Content): No fix needed. The action was successful; there is simply no content to return. For 451 (Unavailable For Legal Reasons): No technical fix. The block is legally mandated. Contact the site operator for details.