HTTP 101 Switching Protocols vs 413 Content Too Large
HTTP 101 (Switching Protocols) is a 1xx Informational response, while 413 (Content Too Large) is a 4xx Client Error response. 101 indicates that the server understands the Upgrade header field request and indicates which protocol it is switching to. In contrast, 413 means that the request payload exceeds the server's size limit.
説明
The server understands the Upgrade header field request and indicates which protocol it is switching to.
このコードが表示される場合
When upgrading from HTTP/1.1 to WebSocket, or to HTTP/2.
解決方法
This is normal behavior during protocol upgrades. Ensure your client supports the target protocol.
説明
The request payload exceeds the server's size limit.
このコードが表示される場合
When uploading files that exceed the server's maximum upload size.
解決方法
Reduce the payload size. Check server limits (Nginx: client_max_body_size, Apache: LimitRequestBody).
主な違い
101 is a 1xx Informational response, while 413 is a 4xx Client Error response.
HTTP 101: The server understands the Upgrade header field request and indicates which protocol it is switching to.
HTTP 413: The request payload exceeds the server's size limit.
You encounter 101 when when upgrading from HTTP/1.1 to WebSocket, or to HTTP/2.
You encounter 413 when when uploading files that exceed the server's maximum upload size.
どちらをいつ使うか
For 101 (Switching Protocols): This is normal behavior during protocol upgrades. Ensure your client supports the target protocol. For 413 (Content Too Large): Reduce the payload size. Check server limits (Nginx: client_max_body_size, Apache: LimitRequestBody).