SIP 300 Multiple Choices vs 405 Method Not Allowed
SIP 300 (Multiple Choices) is a 3xx Redirection response, while 405 (Method Not Allowed) 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, 405 means that the method specified in the Request-Line is not allowed for the address identified by the Request-URI.
Описание
The address in the request resolved to several choices, each with its own location. The user or UA can select a preferred communication endpoint.
Когда вы это видите
When a user has multiple registered devices or contact addresses and the server cannot determine which one to use.
Как исправить
Select one of the provided Contact addresses and resend the request to that specific URI.
Описание
The method specified in the Request-Line is not allowed for the address identified by the Request-URI.
Когда вы это видите
When sending a SIP method (e.g., MESSAGE, PUBLISH) that the server does not support for the target URI.
Как исправить
Check the Allow header in the response to see which methods are supported. Use a supported method instead.
Ключевые различия
300 is a 3xx Redirection response, while 405 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 405: The method specified in the Request-Line is not allowed for the address identified by the Request-URI.
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 405 when when sending a SIP method (e.g., MESSAGE, PUBLISH) that the server does not support for the target URI.
Когда что использовать
For 300 (Multiple Choices): Select one of the provided Contact addresses and resend the request to that specific URI. For 405 (Method Not Allowed): Check the Allow header in the response to see which methods are supported. Use a supported method instead.