[Devel] CANCEL retransmission

[Bogdan-Andrei Iancu]

Hi Martin,

I made a fix for this problem - please update from cvs. It will be great 
if you could test it to see if the problem is fixed or if no side 
effects pop up.

regards,
bogdan

Bogdan-Andrei Iancu wrote:

> Hi Martin,
>
> thanks for report - indeed, it seams to be a problem - I was able to 
> reproduce the scenario. I will start working on it, but it will be 
> better if you also open a new bug report on the tracker.
>
> Thanks and regards,
> bogdan
>
> Martin Koenig wrote:
>
>> Hello all,
>>
>> in the given scenario, a CANCEL-message is t_relay()-ed to the next 
>> hop user
>> agent in transport UDP, and the target agent does not to it. However,
>> openser is not re-transmitting the cancel message:
>>
>> #
>> U 2006/05/30 10:35:14.928141 USERAGENT-A:5060 -> OPENSER:5060
>> CANCEL sip:+4972166360 at OPENSER:5060;user=phone SIP/2.0.
>> Via: SIP/2.0/UDP
>> USERAGENT-A:5060;branch=z9hG4bK-b42132959a0eaae2d4f43ba197d4c249;rport=5060. 
>>
>> From: <sip:username at toplink-voice.de>;tag=1548336820.
>> To: <sip:+4972166360 at toplink-voice.de;user=phone>.
>> Call-ID: 0e4b8c8e at pbx.
>> CSeq: 2 CANCEL.
>> Max-Forwards: 68.
>> Contact: <sip:username at USERAGENT-A:5060;transport=udp>.
>> Content-Length: 0.
>> .
>>
>> #
>> U 2006/05/30 10:35:14.928806 OPENSER:5060 -> USERAGENT-B:5060
>> CANCEL sip:+4972166360 at USERAGENT-B:5060;user=phone SIP/2.0.
>> Via: SIP/2.0/UDP OPENSER;branch=z9hG4bK5ef1.bea7a8f6.0.
>> Via: SIP/2.0/UDP
>> USERAGENT-A:5060;branch=z9hG4bK-b42132959a0eaae2d4f43ba197d4c249;rport=5060. 
>>
>> From: <sip:username at toplink-voice.de>;tag=1548336820.
>> To: <sip:+4972166360 at toplink-voice.de;user=phone>.
>> Call-ID: 0e4b8c8e at pbx.
>> CSeq: 2 CANCEL.
>> Max-Forwards: 67.
>> Contact: <sip:username at USERAGENT-A:5060;transport=udp>.
>> Content-Length: 0.
>> .
>>
>> #
>> U 2006/05/30 10:35:14.928835 OPENSER:5060 -> PROXY-B:5060
>> SIP/2.0 200 canceling.
>> Via: SIP/2.0/UDP
>> USERAGENT:5060;branch=z9hG4bK-b42132959a0eaae2d4f43ba197d4c249;rport=5060. 
>>
>> From: <sip:username at toplink-voice.de>;tag=1548336820.
>> To:
>> <sip:+4972166360 at toplink-voice.de;user=phone>;tag=54438713ac33febc84bf508cca 
>>
>> f41100-cfc5.
>> Call-ID: 0e4b8c8e at pbx.
>> CSeq: 2 CANCEL.
>> Content-Length: 0.
>> .
>>
>> The second cancel is the only cancel ever that openser will send out. I
>> believe it should start re-transmission of the cancel message after 
>> 500ms,
>> then 1000ms etc. Is this a known issue?
>>
>> Best regards,
>> Martin
>>
>>
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>>
>>  
>>
>
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