How to add custom logic to handle cancel for a SIP invite

[krambojun]

Given that there has been this refactoring 8067400, how to know a sip cancel has been sent so that custom logic can be called?

I tried checking this dtx.setState(sip.DialogStateEnded) based on the temp fix added and also leveraged the onCancel method but none of those seem to work

[emiago]

hi @krambojun as server, you will have error ErrTransactionCancel, but I am not sure your use case, and where exactly you need this. I believe it gets propagated, although I think it could be dedicated error as well.
This is on tx.Err() after tx.Done()