[Users] branch parameter in ACK set to zero?

[Bogdan-Andrei Iancu]

Hi Klaus,

just to clarify - the empty branch in VIA problem was properly fixed 
(according to RFC) starting with OpenSER 1.1 - in stateful mode the 200 
ACK branch gets populated and also in stateless mode a unique branch is 
added to VIA.

so, if the 0 branch is reported, it means is either a bug somewhere 
,either there is a processing error.

regards,
bogdan

Klaus Darilion wrote:
> FYI: on the ser list you will find lots of discussion about this issue.
>
> regards
> klaus
>
> Bogdan-Andrei Iancu wrote:
>> Hi Tim,
>>
>> the VIA branch param must not be 0, indeed. Could you provide an 
>> network trace for the entire call and the debug log for level 9?
>>
>> regards,
>> bogdan
>>
>> Tim Madorma wrote:
>>> Hi,
>>>
>>> In testing with OpenSER 1.2 I noticed that the branch parameter of the
>>> Via in the ACK to 200 OK has a value of zero. This does not seem
>>> right. From 16.6 of RFC-3261:
>>>
>>>         The proxy MUST insert a Via header field value into the copy
>>>         before the existing Via header field values.  The construction
>>>         of this value follows the same guidelines of Section 8.1.1.7.
>>>         This implies that the proxy will compute its own branch
>>>         parameter, which will be globally unique for that branch, and
>>>         contain the requisite magic cookie.
>>>
>>> Please advise.
>>>
>>> thanks,
>>> Tim
>>>
>