Re: [Serusers] Race condition with CANCEL?

this may happen only of you do stateless processing. If you use TM (t_relay) CANCEL will send automatically to same destination as INVITE. So when INVITE comes, even if user B is register, t_relay will force the CANCEL to take same path as INVITE, which means to VM.

bogdan

Ingo Wolfsberger wrote:

Hello,

Following situation: t+0: User A is registerd User B is not registered

t+1: User A calls user B Call is transfered to the vm box. vm does not go off-hook.

t+2: User B registers

t+3: User A hooks on, a CANCEL is send.

Currently I handle a CANCEL like an INVITE, which means the CANCEL is sent to user B and not to the vm.

How to handle this case?

bye, Ingo