[Users] Accounting wrong BYEs

[Bogdan-Andrei Iancu]

 was referring to a forking scenario:

UAC           P                UAS
              <----------------- 180 from UAS1
<--------------                
              <----------------- 183 from UAS1
<--------------
              <----------------- 180 from UAS2
<---x---x---x--                  this will not be relayed to UAC since a 
higher reply code was already sent,
                                 so the UAS2 will not be visible

regards,
bogdan

Klaus Darilion wrote:

>>
>>
>> First of all the UAC may not discover all the branches based on 
>> To-tag - there might be branches that haven't sent any reply, or 
>> replies were absorbed by the forking server (ex: 180 after 183 will 
>> not be relayed).
>
>
> Really? Why not? This is strictly valid and make sense. All gateways 
> does this:
>   INVITE  --> SETUP
>   ...
>   183 <--  PROGRESS w/ inband audio
>   180 <--  ALERTING
>