HTTP 101 Switching Protocols vs 415 Unsupported Media Type
HTTP 101 (Switching Protocols) is a 1xx Informational response, while 415 (Unsupported Media Type) 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, 415 means that the server refuses to accept the request because the Content-Type is not supported.
설명
The server understands the Upgrade header field request and indicates which protocol it is switching to.
이 코드를 보게 되는 경우
When upgrading from HTTP/1.1 to WebSocket, or to HTTP/2.
해결 방법
This is normal behavior during protocol upgrades. Ensure your client supports the target protocol.
설명
The server refuses to accept the request because the Content-Type is not supported.
이 코드를 보게 되는 경우
When sending JSON to an endpoint that only accepts XML, or missing the Content-Type header.
해결 방법
Set the correct Content-Type header matching the data format you're sending.
주요 차이점
101 is a 1xx Informational response, while 415 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 415: The server refuses to accept the request because the Content-Type is not supported.
You encounter 101 when when upgrading from HTTP/1.1 to WebSocket, or to HTTP/2.
You encounter 415 when when sending JSON to an endpoint that only accepts XML, or missing the Content-Type header.
언제 어떤 것을 사용할지
For 101 (Switching Protocols): This is normal behavior during protocol upgrades. Ensure your client supports the target protocol. For 415 (Unsupported Media Type): Set the correct Content-Type header matching the data format you're sending.