[reSIProcate] CANCEL method

[Nicolas LEGROS]

Hi!

I find these explanations concerning CANCEL method:
"To send a CANCEL to cancel for a UAC INVITE (for which a 200 response
has NOT yet been recieved) and cancel all potential legs of the invite -
use the InviteSessionHandle->getAppDialogSet()->end() call". 

But I'm wonder what will be DUM State after sending a CANCEL message
(after calling InviteSessionHandle->getAppDialogSet()->end())?
DUM State will be "CANCELED"?

Moreover I'm still wondering what's the use of the method cancel()
(ClientInviteSession class)?

If someone has some ideas...
Thanks by advance

Nicolas L.