SIP 300 Multiple Choices vs 407 Proxy Authentication Required
SIP 300 (Multiple Choices) is a 3xx Redirection response, while 407 (Proxy Authentication Required) is a 4xx Client Failure response. 300 indicates that the address in the request resolved to several choices, each with its own location. The user or UA can select a preferred communication endpoint. In contrast, 407 means that the client must first authenticate with the proxy. The proxy returns a Proxy-Authenticate header with a challenge.
Descripción
The address in the request resolved to several choices, each with its own location. The user or UA can select a preferred communication endpoint.
Cuándo lo verás
When a user has multiple registered devices or contact addresses and the server cannot determine which one to use.
Cómo solucionarlo
Select one of the provided Contact addresses and resend the request to that specific URI.
Descripción
The client must first authenticate with the proxy. The proxy returns a Proxy-Authenticate header with a challenge.
Cuándo lo verás
When a SIP proxy requires authentication before forwarding the request. Similar to 401 but for proxy servers.
Cómo solucionarlo
Resend the request with a Proxy-Authorization header containing valid credentials for the proxy.
Diferencias clave
300 is a 3xx Redirection response, while 407 is a 4xx Client Failure response.
SIP 300: The address in the request resolved to several choices, each with its own location. The user or UA can select a preferred communication endpoint.
SIP 407: The client must first authenticate with the proxy. The proxy returns a Proxy-Authenticate header with a challenge.
You encounter 300 when when a user has multiple registered devices or contact addresses and the server cannot determine which one to use.
You encounter 407 when when a SIP proxy requires authentication before forwarding the request. Similar to 401 but for proxy servers.
Cuándo usar cada uno
For 300 (Multiple Choices): Select one of the provided Contact addresses and resend the request to that specific URI. For 407 (Proxy Authentication Required): Resend the request with a Proxy-Authorization header containing valid credentials for the proxy.