[Serdev] Can the function is_to_local be added to the domain module

[Jiri Kuthan]

At 12:37 PM 5/25/2004, Zeus Ng wrote:
>I appreciate the input. But what do you mean by just check the initial
>request? Does it mean that I just check INVITE and lax on ACK and BYE? How
>to prevent a malicious user sending a BYE to end the call between UA1 and
>UA2.

You can hardly do so. Subsrequent requests in SIP may not include address of
the request originator in From (RFC2543 legacy) which means you can't
effectively challenge request sender.


>If you are talking about maintaining a dialog state, doesn't it requires a
>B2BUA?


It takes a check if the request has a to-tag.

-jiri