SIP 302 Moved Temporarily vs 438 Invalid Identity Header
SIP 302 (Moved Temporarily) is a 3xx Redirection response, while 438 (Invalid Identity Header) 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, 438 means that the server obtained the certificate from the Identity-Info header but the signature in the Identity header is invalid.
คำอธิบาย
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.
เมื่อคุณพบเห็น
When a user is temporarily reachable at a different location, such as when traveling or using a different device.
วิธีแก้ไข
Redirect the current call to the Contact URI provided, but keep the original URI for future requests.
คำอธิบาย
The server obtained the certificate from the Identity-Info header but the signature in the Identity header is invalid.
เมื่อคุณพบเห็น
When the cryptographic signature in the Identity header does not match the message content, indicating possible tampering.
วิธีแก้ไข
Regenerate the Identity header with a correct signature. Ensure no intermediary is modifying signed headers after signing.
ความแตกต่างหลัก
302 is a 3xx Redirection response, while 438 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 438: The server obtained the certificate from the Identity-Info header but the signature in the Identity header is invalid.
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 438 when when the cryptographic signature in the Identity header does not match the message content, indicating possible tampering.
ควรใช้อันไหนเมื่อไร
For 302 (Moved Temporarily): Redirect the current call to the Contact URI provided, but keep the original URI for future requests. For 438 (Invalid Identity Header): Regenerate the Identity header with a correct signature. Ensure no intermediary is modifying signed headers after signing.