SIP 302 Moved Temporarily vs 416 Unsupported URI Scheme
SIP 302 (Moved Temporarily) is a 3xx Redirection response, while 416 (Unsupported URI Scheme) is a 4xx Client Failure response. 302 indicates that the callee has temporarily moved to a different address. The client should retry the request at the Contact address but continue using the original URI for future requests. In contrast, 416 means that the server cannot process the request because the URI scheme in the Request-URI is unknown to the server.
설명
The callee has temporarily moved to a different address. The client should retry the request at the Contact address but continue using the original URI for future requests.
이 코드를 보게 되는 경우
When a user is temporarily reachable at a different location, such as when traveling or using a different device.
해결 방법
Redirect the current call to the Contact URI provided, but keep the original URI for future requests.
설명
The server cannot process the request because the URI scheme in the Request-URI is unknown to the server.
이 코드를 보게 되는 경우
When using a URI scheme (e.g., tel:, im:, pres:) that the receiving server does not support.
해결 방법
Use a supported URI scheme. Most SIP servers support sip: and sips: schemes. Check server capabilities with OPTIONS.
주요 차이점
302 is a 3xx Redirection response, while 416 is a 4xx Client Failure response.
SIP 302: The callee has temporarily moved to a different address. The client should retry the request at the Contact address but continue using the original URI for future requests.
SIP 416: The server cannot process the request because the URI scheme in the Request-URI is unknown to the server.
You encounter 302 when when a user is temporarily reachable at a different location, such as when traveling or using a different device.
You encounter 416 when when using a URI scheme (e.g., tel:, im:, pres:) that the receiving server does not support.
언제 어떤 것을 사용할지
For 302 (Moved Temporarily): Redirect the current call to the Contact URI provided, but keep the original URI for future requests. For 416 (Unsupported URI Scheme): Use a supported URI scheme. Most SIP servers support sip: and sips: schemes. Check server capabilities with OPTIONS.