SIP 199 Early Dialog Terminated vs 407 Proxy Authentication Required
SIP 199 (Early Dialog Terminated) is a 1xx Provisional response, while 407 (Proxy Authentication Required) 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, 407 means that the client must first authenticate with the proxy. The proxy returns a Proxy-Authenticate header with a challenge.
Mô tả
A UAS can send this to indicate that an early dialog has been terminated. Used when forking results in multiple early dialogs.
Khi bạn thấy mã này
In forked call scenarios when one of the forked branches is cancelled because another branch was answered.
Cách khắc phục
No action needed. This is normal behavior in forked call setups. Ensure your UA handles early dialog termination gracefully.
Mô tả
The client must first authenticate with the proxy. The proxy returns a Proxy-Authenticate header with a challenge.
Khi bạn thấy mã này
When a SIP proxy requires authentication before forwarding the request. Similar to 401 but for proxy servers.
Cách khắc phục
Resend the request with a Proxy-Authorization header containing valid credentials for the proxy.
Sự khác biệt chính
199 is a 1xx Provisional response, while 407 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 407: The client must first authenticate with the proxy. The proxy returns a Proxy-Authenticate header with a challenge.
You encounter 199 when in forked call scenarios when one of the forked branches is cancelled because another branch was answered.
You encounter 407 when when a SIP proxy requires authentication before forwarding the request. Similar to 401 but for proxy servers.
Khi nào dùng cái nào
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 407 (Proxy Authentication Required): Resend the request with a Proxy-Authorization header containing valid credentials for the proxy.