HTTP 100 Continue vs 407 Proxy Authentication Required
HTTP 100 (Continue) is a 1xx Informational response, while 407 (Proxy Authentication Required) is a 4xx Client Error response. 100 indicates that the server has received the request headers and the client should proceed to send the request body. This lets the client know it can continue with the request or abort if the headers were rejected. In contrast, 407 means that the client must first authenticate itself with the proxy.
説明
The server has received the request headers and the client should proceed to send the request body. This lets the client know it can continue with the request or abort if the headers were rejected.
このコードが表示される場合
When a client sends an Expect: 100-continue header, the server responds with 100 before the client sends the body.
解決方法
This is an interim response — no fix needed. The client should continue sending the request body.
説明
The client must first authenticate itself with the proxy.
このコードが表示される場合
When accessing the internet through a corporate proxy that requires authentication.
解決方法
Configure proxy credentials in your HTTP client or browser settings.
主な違い
100 is a 1xx Informational response, while 407 is a 4xx Client Error response.
HTTP 100: The server has received the request headers and the client should proceed to send the request body. This lets the client know it can continue with the request or abort if the headers were rejected.
HTTP 407: The client must first authenticate itself with the proxy.
You encounter 100 when when a client sends an Expect: 100-continue header, the server responds with 100 before the client sends the body.
You encounter 407 when when accessing the internet through a corporate proxy that requires authentication.
どちらをいつ使うか
For 100 (Continue): This is an interim response — no fix needed. The client should continue sending the request body. For 407 (Proxy Authentication Required): Configure proxy credentials in your HTTP client or browser settings.