SIP 199 Early Dialog Terminated vs 410 Gone
SIP 199 (Early Dialog Terminated) is a 1xx Provisional response, while 410 (Gone) is a 4xx Client Failure response. 199 indicates that a UAS can send this to indicate that an early dialog has been terminated. Used when forking results in multiple early dialogs. In contrast, 410 means that the requested resource is no longer available at the server and no forwarding address is known. This is expected to be a permanent condition.
説明
A UAS can send this to indicate that an early dialog has been terminated. Used when forking results in multiple early dialogs.
このコードが表示される場合
In forked call scenarios when one of the forked branches is cancelled because another branch was answered.
解決方法
No action needed. This is normal behavior in forked call setups. Ensure your UA handles early dialog termination gracefully.
説明
The requested resource is no longer available at the server and no forwarding address is known. This is expected to be a permanent condition.
このコードが表示される場合
When a user account has been permanently deactivated or removed from the server with no forwarding information.
解決方法
The user is permanently gone. Remove this URI from your contacts. Unlike 404, the server knows the user once existed here.
主な違い
199 is a 1xx Provisional response, while 410 is a 4xx Client Failure response.
SIP 199: A UAS can send this to indicate that an early dialog has been terminated. Used when forking results in multiple early dialogs.
SIP 410: The requested resource is no longer available at the server and no forwarding address is known. This is expected to be a permanent condition.
You encounter 199 when in forked call scenarios when one of the forked branches is cancelled because another branch was answered.
You encounter 410 when when a user account has been permanently deactivated or removed from the server with no forwarding information.
どちらをいつ使うか
For 199 (Early Dialog Terminated): No action needed. This is normal behavior in forked call setups. Ensure your UA handles early dialog termination gracefully. For 410 (Gone): The user is permanently gone. Remove this URI from your contacts. Unlike 404, the server knows the user once existed here.