SIP 204 No Notification vs 414 Request-URI Too Long
SIP 204 (No Notification) is a 2xx Success response, while 414 (Request-URI Too Long) is a 4xx Client Failure response. 204 indicates that the request was successful but the server has decided not to send a NOTIFY for this SUBSCRIBE request. In contrast, 414 means that the server is refusing to service the request because the Request-URI is longer than the server is willing to interpret.
描述
The request was successful but the server has decided not to send a NOTIFY for this SUBSCRIBE request.
何时出现
When subscribing to event packages that may not generate immediate notifications, such as dialog or presence packages.
如何修复
No fix needed. The subscription was accepted but there is no state change to notify about yet.
描述
The server is refusing to service the request because the Request-URI is longer than the server is willing to interpret.
何时出现
When the SIP URI in the request line is excessively long, which may happen with URI parameters or long phone numbers.
如何修复
Shorten the Request-URI. Remove unnecessary parameters or use a shorter alias for the destination.
主要区别
204 is a 2xx Success response, while 414 is a 4xx Client Failure response.
SIP 204: The request was successful but the server has decided not to send a NOTIFY for this SUBSCRIBE request.
SIP 414: The server is refusing to service the request because the Request-URI is longer than the server is willing to interpret.
You encounter 204 when when subscribing to event packages that may not generate immediate notifications, such as dialog or presence packages.
You encounter 414 when when the SIP URI in the request line is excessively long, which may happen with URI parameters or long phone numbers.
何时使用哪个
For 204 (No Notification): No fix needed. The subscription was accepted but there is no state change to notify about yet. For 414 (Request-URI Too Long): Shorten the Request-URI. Remove unnecessary parameters or use a shorter alias for the destination.