HTTP 204 No Content vs 511 Network Authentication Required
HTTP 204 (No Content) is a 2xx Success response, while 511 (Network Authentication Required) is a 5xx Server 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, 511 means that the client needs to authenticate to gain network access. Used by captive portals (hotel/airport WiFi).
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 client needs to authenticate to gain network access. Used by captive portals (hotel/airport WiFi).
Когда вы это видите
When connecting to WiFi that requires login (airport, hotel, coffee shop).
Как исправить
Open a browser and complete the captive portal login process.
Ключевые различия
204 is a 2xx Success response, while 511 is a 5xx Server 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 511: The client needs to authenticate to gain network access. Used by captive portals (hotel/airport WiFi).
You encounter 204 when after DELETE requests, PUT updates where no body is needed, or CORS preflight responses.
You encounter 511 when when connecting to WiFi that requires login (airport, hotel, coffee shop).
Когда что использовать
For 204 (No Content): No fix needed. The action was successful; there is simply no content to return. For 511 (Network Authentication Required): Open a browser and complete the captive portal login process.