HTTP 103 Early Hints vs 401 Unauthorized
HTTP 103 (Early Hints) is a 1xx Informational response, while 401 (Unauthorized) is a 4xx Client Error response. 103 indicates that used to return some response headers before the final HTTP message. Allows the browser to start preloading resources while the server prepares the response. In contrast, 401 means that the request requires user authentication. The response includes a WWW-Authenticate header indicating the authentication scheme.
Описание
Used to return some response headers before the final HTTP message. Allows the browser to start preloading resources while the server prepares the response.
Когда вы это видите
When a server wants the browser to start loading CSS/JS before the full response is ready.
Как исправить
No fix needed. This optimization helps speed up page loading.
Описание
The request requires user authentication. The response includes a WWW-Authenticate header indicating the authentication scheme.
Когда вы это видите
When accessing a protected resource without credentials or with expired tokens.
Как исправить
Include valid authentication credentials (API key, Bearer token, Basic auth) in the Authorization header.
Ключевые различия
103 is a 1xx Informational response, while 401 is a 4xx Client Error response.
HTTP 103: Used to return some response headers before the final HTTP message. Allows the browser to start preloading resources while the server prepares the response.
HTTP 401: The request requires user authentication. The response includes a WWW-Authenticate header indicating the authentication scheme.
You encounter 103 when when a server wants the browser to start loading CSS/JS before the full response is ready.
You encounter 401 when when accessing a protected resource without credentials or with expired tokens.
Когда что использовать
For 103 (Early Hints): No fix needed. This optimization helps speed up page loading. For 401 (Unauthorized): Include valid authentication credentials (API key, Bearer token, Basic auth) in the Authorization header.