SIP 200 OK vs 513 Message Too Large
SIP 200 (OK) is a 2xx Success response, while 513 (Message Too Large) is a 5xx Server Failure response. 200 indicates that the request has succeeded. For INVITE, the call has been answered. For other methods, the action has been completed successfully. In contrast, 513 means that the server was unable to process the request since the entire SIP message (not just the body) exceeded the size limit.
Описание
The request has succeeded. For INVITE, the call has been answered. For other methods, the action has been completed successfully.
Когда вы это видите
When a call is answered (INVITE 200 OK), a registration succeeds (REGISTER 200 OK), or a subscription is accepted (SUBSCRIBE 200 OK).
Как исправить
No fix needed — this is a success response. The caller should send an ACK to complete the three-way handshake for INVITE transactions.
Описание
The server was unable to process the request since the entire SIP message (not just the body) exceeded the size limit.
Когда вы это видите
When the total SIP message (headers + body) is too large. Different from 413 which refers only to the body.
Как исправить
Reduce the message size by removing unnecessary headers or reducing the SDP size. Consider using UDP-compatible message sizes (< 1300 bytes).
Ключевые различия
200 is a 2xx Success response, while 513 is a 5xx Server Failure response.
SIP 200: The request has succeeded. For INVITE, the call has been answered. For other methods, the action has been completed successfully.
SIP 513: The server was unable to process the request since the entire SIP message (not just the body) exceeded the size limit.
You encounter 200 when when a call is answered (INVITE 200 OK), a registration succeeds (REGISTER 200 OK), or a subscription is accepted (SUBSCRIBE 200 OK).
You encounter 513 when when the total SIP message (headers + body) is too large. Different from 413 which refers only to the body.
Когда что использовать
For 200 (OK): No fix needed — this is a success response. The caller should send an ACK to complete the three-way handshake for INVITE transactions. For 513 (Message Too Large): Reduce the message size by removing unnecessary headers or reducing the SDP size. Consider using UDP-compatible message sizes (< 1300 bytes).