[Sipp-users] branch parameter in header Via

[flavio <fla...@gm...>]

Hi to all,
I'm using sipp for testing my own Registrar/Proxy Server. Scenario is
simple SIP call, by Proxy: UA1 calls UA2.
When server proxies INVITE message, recieved from UA1,  to UA2  it
adds Via header with its own branch parameter. In example:

Via: SIP/2.0/UDP
172.176.1.1:5060;rport;branch=z9hG4bKdfdd415001fcc497beb51bd1  (added
by proxy)
Via: SIP/2.0/UDP 192.168.1.1:5060;branch=z9hG4bK-4338-1-8

But when sipp (uas xml scenario) replies with (180 Ringing) 200 OK, it
modifies branch parameters added by proxy, stripping the last data (In
the example "1" is stripped).

Via: SIP/2.0/UDP
172.176,1,1:5060;rport;branch=z9hG4bKdfdd415001fcc497beb51bd,
SIP/2.0/UDP 192.168.1.1:5060;branch=z9hG4bK-4338-1-8

The two branch parameter should be the same: is it correct?

Anyone can tell me more about it?? Is it a bug?

thanks

flavio

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* (o<     ing.Flavio Patria
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