SIP 204 No Notification vs 305 Use Proxy
SIP 204 (No Notification) is a 2xx Success response, while 305 (Use Proxy) is a 3xx Redirection response. 204 indicates that the request was successful but the server has decided not to send a NOTIFY for this SUBSCRIBE request. In contrast, 305 means that the requested resource must be accessed through the proxy given by the Contact header field.
Описание
The request was successful but the server has decided not to send a NOTIFY for this SUBSCRIBE request.
Когда вы это видите
When subscribing to event packages that may not generate immediate notifications, such as dialog or presence packages.
Как исправить
No fix needed. The subscription was accepted but there is no state change to notify about yet.
Описание
The requested resource must be accessed through the proxy given by the Contact header field.
Когда вы это видите
When the request must be routed through a specific outbound proxy server.
Как исправить
Resend the request through the proxy specified in the Contact header of this response.
Ключевые различия
204 is a 2xx Success response, while 305 is a 3xx Redirection response.
SIP 204: The request was successful but the server has decided not to send a NOTIFY for this SUBSCRIBE request.
SIP 305: The requested resource must be accessed through the proxy given by the Contact header field.
You encounter 204 when when subscribing to event packages that may not generate immediate notifications, such as dialog or presence packages.
You encounter 305 when when the request must be routed through a specific outbound proxy server.
Когда что использовать
For 204 (No Notification): No fix needed. The subscription was accepted but there is no state change to notify about yet. For 305 (Use Proxy): Resend the request through the proxy specified in the Contact header of this response.