HTTP 205 Reset Content vs 511 Network Authentication Required
HTTP 205 (Reset Content) is a 2xx Success response, while 511 (Network Authentication Required) is a 5xx Server Error response. 205 indicates that the server fulfilled the request and the client should reset the document view (e.g., clear a form). In contrast, 511 means that the client needs to authenticate to gain network access. Used by captive portals (hotel/airport WiFi).
説明
The server fulfilled the request and the client should reset the document view (e.g., clear a form).
このコードが表示される場合
After form submissions where the server wants the client to reset the form for new input.
解決方法
The client should clear the form or reset the view. Rarely used in practice.
説明
The client needs to authenticate to gain network access. Used by captive portals (hotel/airport WiFi).
このコードが表示される場合
When connecting to WiFi that requires login (airport, hotel, coffee shop).
解決方法
Open a browser and complete the captive portal login process.
主な違い
205 is a 2xx Success response, while 511 is a 5xx Server Error response.
HTTP 205: The server fulfilled the request and the client should reset the document view (e.g., clear a form).
HTTP 511: The client needs to authenticate to gain network access. Used by captive portals (hotel/airport WiFi).
You encounter 205 when after form submissions where the server wants the client to reset the form for new input.
You encounter 511 when when connecting to WiFi that requires login (airport, hotel, coffee shop).
どちらをいつ使うか
For 205 (Reset Content): The client should clear the form or reset the view. Rarely used in practice. For 511 (Network Authentication Required): Open a browser and complete the captive portal login process.