[sr-dev] nathelper generates a keepalive request with branch=0

[Maxim Sobolev]

Jan Janak wrote:
> On Thu, Apr 29, 2010 at 6:30 AM, Maxim Sobolev <sobomax at sippysoft.com> wrote:
>> Klaus Darilion wrote:
>>>> Why not to use a SIP/2.0 compliant branch (z9hG4bK...)? any reason?
>>> Maybe this is the method to detect keep-alive replies and absorb them
>>> before they enter dialplan processing.
>> I don't think it's intentional.
> 
> There was a thread discussing this a long time ago, see:
> 
> http://lists.iptel.org/pipermail/serusers/2005-April/018559.html
> 
> Hope that helps.

It doesn't look like the same issue at all. The thread is about branch 
in ACK being different from branch in 200 OK, while this one is about 
branch in OPTIONS that the proxy generates to keep NAT binding alive.

Regards,
-- 
Maksym Sobolyev
Sippy Software, Inc.
Internet Telephony (VoIP) Experts
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