[OpenSIPS-Users] Reception of "100 Trying" doesn't cancel tm fr_timer

[mayamatakeshi]

On Mon, Jul 15, 2013 at 11:49 AM, mayamatakeshi <mayamatakeshi at gmail.com>wrote:

>
>
>
> On Mon, Jul 15, 2013 at 10:13 AM, mayamatakeshi <mayamatakeshi at gmail.com>wrote:
>
>> Hello,
>> we are using opensips 1.6 r. 7055 under CentOS 5.3 x86_64 and this works
>> fine on several machines.
>> I am tasked with preparing upgrade to CentOS 6.4 x86_64 so I have
>> prepared a Virtual Machine to run this OS,  installed opensips and used the
>> same opensips.cfg .
>>
>> However, I am seeing the following issue: reception of "100 Trying"
>> doesn't cancel module tm fr_timer but if other provisional responses like
>> "180 Ringing" is received, fr_timer is canceled.
>> I am sure the "100 Trying" is received by opensips because it doesn't
>> retransmit the INVITE.
>>
>
> Sorry, by mistake I looked at the wrong capture. Indeed, opensips is
> retransmitting the INVITE. But checking Call-ID, from-tag and Via headers,
> they match and so, opensips should not do retransmission. It seems somehow
> it is ignoring the "100 Trying".
>
> So to further investigate I enabled debug with "opensipsctl fifo debug 4"
> (instead of default debug 0), but surprisingly, now opensips accepts the
> "180 Trying"  (doesn't retransmit the INVITE) and fr_timer is canceled.
>

In the above I meant "100 Trying".


> I tested several times and just by switching debug off and on is enough to
> cause the problem to appear/disappear.
>
>
>
>> Everything else seems to be fine.
>>
>> Does anyone has any idea why this could be happening?
>> Also, to confirm I have prepared 3 CentOS 6.4 x86_64 VMs, but in one of
>> them the problem doesn't happen but I don't know why this is so as i
>> compared the packages installed (yum list installed) and they are all the
>> same, including version numbers.
>>
>
> Also, on the machine where the problem doesn't manifest itself, it is the
> opposite:
> if I enable debug with "opensipsctl fifo debug 4", fr_timer fails to be
> canceled by "100 Trying".
>

Retrying several times, the problem occasionally happens on this machine
too. So it seems to be some race condition.

I was able to try with latest revisions of 1.7 and 1.8 branches and the
problem also happens with them.


>
>
>>
>> (Also I have tried upgrading to latest branch 1.6 r. 10024, and the
>> problem persists).
>>
>> Regards,
>> Takeshi
>>
>>
>>
>>
>
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