[OpenSER-Devel] Possible bug in the tm module in the presence of packet loss/branches

Maxim Sobolev sobomax at sippysoft.com
Thu Mar 6 19:47:45 CET 2008


Dan Pascu wrote:
> On Thursday 06 March 2008, Bogdan-Andrei Iancu wrote:
>> Hi Maxim,
>>
>> You stated:
>>
>> <quote>
>> The correct behavior of the tm module in this case would be to continue
>> with INVITE re-transmits until we get provisional response and
>> immediate CANCEL once that response comes in.
>> </quote>
>>
>> Is this based on RFC indication or a personal opinion? If RFC based,
>> could you please point me out the relevant section?
> 
> I got the same impression that Maxim is trying to solve a problem not 
> related to SIP (network packet loss) by hacking the SIP behavior and 

Your impression is completely wrong. Network packet loss is real if you 
are using UDP, and even if you don't see it normally, it still happens 
from time to time.

-Maxim



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