SIP 301 Moved Permanently vs 400 Bad Request
SIP 301 (Moved Permanently) is a 3xx Redirection response, while 400 (Bad Request) is a 4xx Client Failure response. 301 indicates that the user can no longer be found at the address in the Request-URI. The client should direct future requests to the new address in the Contact header. In contrast, 400 means that the request could not be understood due to malformed syntax. The client should not repeat the request without modifications.
คำอธิบาย
The user can no longer be found at the address in the Request-URI. The client should direct future requests to the new address in the Contact header.
เมื่อคุณพบเห็น
When a user has permanently changed their SIP address. All future calls should be directed to the new URI.
วิธีแก้ไข
Update your address book or routing tables to use the new Contact URI provided in the response.
คำอธิบาย
The request could not be understood due to malformed syntax. The client should not repeat the request without modifications.
เมื่อคุณพบเห็น
When the SIP message has syntax errors, missing required headers, or invalid header values.
วิธีแก้ไข
Review the SIP message for syntax errors. Check required headers (To, From, Call-ID, CSeq, Via, Max-Forwards) and ensure proper formatting.
ความแตกต่างหลัก
301 is a 3xx Redirection response, while 400 is a 4xx Client Failure response.
SIP 301: The user can no longer be found at the address in the Request-URI. The client should direct future requests to the new address in the Contact header.
SIP 400: The request could not be understood due to malformed syntax. The client should not repeat the request without modifications.
You encounter 301 when when a user has permanently changed their SIP address. All future calls should be directed to the new URI.
You encounter 400 when when the SIP message has syntax errors, missing required headers, or invalid header values.
ควรใช้อันไหนเมื่อไร
For 301 (Moved Permanently): Update your address book or routing tables to use the new Contact URI provided in the response. For 400 (Bad Request): Review the SIP message for syntax errors. Check required headers (To, From, Call-ID, CSeq, Via, Max-Forwards) and ensure proper formatting.