Re: [OpenSIPStack] Double packets - opensbc

[Joegen E. B. <joe...@gm...>]

Jeremy,

It should be

#define SIP_TIMER_RESOLUTION 20   /// 20 milliseconds

Joegen


Jeremy A wrote:
> Not much difference I'm afraid.
>
> I set SIP_TIMER_MANAGER to 20000 (20 milliseconds?)
>
> The trace showed that the only packets sent by openSBC that weren't
> duplicated were the DNS queries. The rest were duplicated at typically
> 10-15 microseconds delay
>
>
> jo...@op... wrote:
>   
>> Hi Jeremy,
>>
>> I think I found out whats causing this early firing of retransmission.   
>> The timer resolution set for SIPTimerManager is too low.  IT's currently 
>> set to 500 ms which is as low as it could get.  This would increase the 
>> chances of SIP Timer A to fire sooner.  Try setting #define 
>> SIP_TIMER_RESOLUTION from 500 to 10 milliseconds in 
>> SIPTimerManager.cxx.   Let me know if this solves it.  Thanks for 
>> pointing it out.
>>
>> Joegen
>>
>> jo...@op... wrote:
>>   
>>     
>>> Ouch!  I guess you are right.   For a second there, I thought I was 
>>> looking at milliseconds.    Let me try to replicate this issue.  For the 
>>> mean time would you be able to recompile using a higher value for 
>>> SIP_TIMER_T1.  Just look for #define SIP_TIMER_T1 500 in SIPTimer.h.  I 
>>> want to be sure it's actually  Timer_A firing early instead of a rogue 
>>> code in OpenSIPStack.
>>>
>>> Joegen
>>>
>>> Jeremy A wrote:
>>>   
>>>     
>>>       
>>>> Perhaps not?
>>>>
>>>> In your first example the time difference 0.030086 to 0.066302 /
>>>> 0.073700 is of the order of 30-40 milliseconds
>>>>
>>>> In your second example the time difference 116.150431 to 116.159165 is
>>>> 8734 microseconds or 8.734 milliseconds.
>>>>
>>>> I have looked carefully at the monitoring process to make sure it is not
>>>> causing a false result. I can find no obvious problem.
>>>>
>>>> FYI The opensbc server is a VMWare virtual machine hosted on the
>>>> monitoring server. The code running opensbc is the 1.1.4 linux release
>>>> compiled natively and is the release version.
>>>>
>>>>       
>>>>         
>
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