18 Jul
2004
18 Jul
'04
12:22 p.m.
Contacts are used to advertised wherebouts for
subsequent in-dialog
requests coming back to your UAC. For that reason, I don't entirely
understand why the UAC includes Contact in CANCEL at all -- all in all
CANCEL is used to discontinued estabslishment of a dialog. Anyhow,
it should not matter the Contact content is invalid since there is no
use for the header field in this case at all.
Sorry, just realised that in a half-awake state I typed rubbish. I meant
that the 'call-id' was not rewritten - don't know why I mentioned contact!
(In the INVITE to the Cisco it is blah(a)213.x.x.x and in the CANCEL to Cisco
it is blah(a)10.x.x.x
Linus