HTTP 201 Created vs 511 Network Authentication Required
HTTP 201 (Created) is a 2xx Success response, while 511 (Network Authentication Required) is a 5xx Server Error response. 201 indicates that the request succeeded and a new resource was created. Typically returned after POST or PUT requests that create a new entity. In contrast, 511 means that the client needs to authenticate to gain network access. Used by captive portals (hotel/airport WiFi).
説明
The request succeeded and a new resource was created. Typically returned after POST or PUT requests that create a new entity.
このコードが表示される場合
After successfully creating a new user, post, order, or other resource via a REST API.
解決方法
No fix needed. Check the Location header for the URL of the new resource.
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
201 is a 2xx Success response, while 511 is a 5xx Server Error response.
HTTP 201: The request succeeded and a new resource was created. Typically returned after POST or PUT requests that create a new entity.
HTTP 511: The client needs to authenticate to gain network access. Used by captive portals (hotel/airport WiFi).
You encounter 201 when after successfully creating a new user, post, order, or other resource via a REST API.
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 201 (Created): No fix needed. Check the Location header for the URL of the new resource. For 511 (Network Authentication Required): Open a browser and complete the captive portal login process.