[Kamailio-Users] ERROR:core:receive_msg: no via found in reply

[Ovidiu Sas]

Please open a bug with respect to this issue.  This error should end
up in the error_route.
Try to run tcpdump with buffer rotation and see if you can spot the bogus reply.


Regards,
Ovidiu Sas

On Mon, Apr 13, 2009 at 4:30 PM, Geoffrey Mina <geoffreymina at gmail.com> wrote:
> OK, the error has occurred again today, and the error_route didn't
> catch the condition.  Any other ideas?
>
> thanks,
> Geoff
>
> On Sun, Apr 12, 2009 at 6:42 PM, Geoffrey Mina <geoffreymina at gmail.com> wrote:
>> Ovidiu,
>> Thanks for your continued input.  I currently have the error_route
>> block configured with some logging.  I am hoping this will be
>> sufficient to capture the condition.  The error hasn't happened today,
>> traffic has been very light as it is Eastern and Passover, and I
>> suppose people have better things to do than be on the phone :)
>>
>> If I get the log message and nothing from error_route, I will
>> definitely do a tcpdump of the SIP port and try to correlate the
>> timing.
>>
>> thanks!
>> Geoff
>>
>> On Sun, Apr 12, 2009 at 8:46 AM, Ovidiu Sas <osas at voipembedded.com> wrote:
>>> Hello Geoffrey,
>>>
>>> With tcpdump, you can capture data in buffers and rotate the buffers
>>> and keep only the latest 2-3 buffers (check the man page).
>>> As soon as the error arise, you stop the traffic and your bogus
>>> message should be in your last buffer.
>>> Just an idea ...
>>>
>>> Also, if your cps is not very high, you can print the callid of each
>>> request/reply, and when the error arise, you can correlate it with the
>>> callid.
>>>
>>>
>>> Regards,
>>> Ovidiu Sas
>>>
>>> On Sun, Apr 12, 2009 at 8:06 AM, Geoffrey Mina <geoffreymina at gmail.com> wrote:
>>>> Ovidiu,
>>>> Thank you for your pointer.  I could capture all the SIP traffic, but
>>>> it would be a LOT of data to sift through.  This machine processes
>>>> hundreds of thousands of calls per day.  I have tried the error_route
>>>> handler to see if it shows up there... fingers crossed.  I was unaware
>>>> of that handler before now.
>>>>
>>>> Thanks for the info!
>>>> Geoff
>>>>
>>>> On Sat, Apr 11, 2009 at 8:38 PM, Ovidiu Sas <osas at voipembedded.com> wrote:
>>>>> How often do you get this error?
>>>>> IIRC, last time when I got this type of error it was related to a
>>>>> missing Via header into a SIP reply.
>>>>> Can you capture/sniff the traffic and check if all the received
>>>>> replies are sane (via header is present)?
>>>>>
>>>>> Another idea would be to capture the bogus message into the error_route:
>>>>> http://www.kamailio.net/dokuwiki/doku.php/core-cookbook:1.5.x#error_route
>>>>> and then print the message via $mb:
>>>>> http://www.kamailio.net/dokuwiki/doku.php/pseudovariables:1.5.x#sip_message_buffer
>>>>>
>>>>> I haven't checked the code to see if this type of error will end up in
>>>>> the error_route, but is it worth a try.
>>>>> If it's not caught, please open a bug, because it should be.
>>>>>
>>>>>
>>>>> Regards,
>>>>> Ovidiu Sas
>>>>>
>>>>> On Sat, Apr 11, 2009 at 5:58 PM, Geoffrey Mina <geoffreymina at gmail.com> wrote:
>>>>>> Tried adding that log into my onreply_route[1] block, but it didn't
>>>>>> work.  I can't seem to figure out I can possibly capture the SIP
>>>>>> message which is generating this error.  Any help would be much
>>>>>> appreciated.
>>>>>>
>>>>>> On Fri, Apr 10, 2009 at 10:23 PM, Geoffrey Mina <geoffreymina at gmail.com> wrote:
>>>>>>> Perhaps I should clarify what I am looking for a bit.  I am guessing
>>>>>>> based on the log "no via found in reply" that I would need to check
>>>>>>> for this condition in my onreply_route[1] block.
>>>>>>>
>>>>>>> Based on my knowledge of SIP, all reply responses are REQUIRED to have
>>>>>>> a VIA header to ensure the response traverses the same path as the
>>>>>>> request... correct?
>>>>>>>
>>>>>>> Would the following effectively deal with this condition, or would
>>>>>>> sending a 500 error in response to a reply cause problems down stream?
>>>>>>>
>>>>>>> onreply_route[1]{
>>>>>>>     if(!is_present_hf("Via")){
>>>>>>>           sl_reply_error("500","No Via found in response.");
>>>>>>>     }
>>>>>>> }
>>>>>>>
>>>>>>> Thanks for anyone's assistance.
>>>>>>> Geoff
>>>>>>>
>>>>>>> On Fri, Apr 10, 2009 at 12:02 PM, Geoffrey Mina <geoffreymina at gmail.com> wrote:
>>>>>>>> Hello,
>>>>>>>> I am seeing the following message repeatedly in my log file.  I am
>>>>>>>> guessing I have a server or servers misbehaving.  Where might I be
>>>>>>>> able to check for this error condition and log appropriately?  I have
>>>>>>>> attached my current configuration file for reference.
>>>>>>>>
>>>>>>>> Thanks!
>>>>>>>> Geoff
>>>>>>>>
>>>>>>>>
>>>>>>>> Apr 10 11:45:40 atl-sipgateway2 /usr/local/sbin/kamailio[15487]:
>>>>>>>> ERROR:core:receive_msg: no via found in reply
>>>>>>>> Apr 10 11:45:42 atl-sipgateway2 /usr/local/sbin/kamailio[15490]:
>>>>>>>> ERROR:core:receive_msg: no via found in reply
>>>>>>>> Apr 10 11:45:46 atl-sipgateway2 /usr/local/sbin/kamailio[15490]:
>>>>>>>> ERROR:core:receive_msg: no via found in reply
>>>>>>>> Apr 10 11:45:50 atl-sipgateway2 /usr/local/sbin/kamailio[15507]:
>>>>>>>> ERROR:core:receive_msg: no via found in reply
>>>>>>>> Apr 10 11:45:54 atl-sipgateway2 /usr/local/sbin/kamailio[15497]:
>>>>>>>> ERROR:core:receive_msg: no via found in reply
>>>>>>>> Apr 10 11:45:58 atl-sipgateway2 /usr/local/sbin/kamailio[15491]:
>>>>>>>> ERROR:core:receive_msg: no via found in reply
>>>>>>>> Apr 10 11:46:02 atl-sipgateway2 /usr/local/sbin/kamailio[15490]:
>>>>>>>> ERROR:core:receive_msg: no via found in reply
>>>>>>>> Apr 10 11:46:06 atl-sipgateway2 /usr/local/sbin/kamailio[15485]:
>>>>>>>> ERROR:core:receive_msg: no via found in reply
>>>>>>>> Apr 10 11:47:46 atl-sipgateway2 /usr/local/sbin/kamailio[15485]:
>>>>>>>> ERROR:core:receive_msg: no via found in reply
>>>>>>>> Apr 10 11:47:47 atl-sipgateway2 /usr/local/sbin/kamailio[15486]:
>>>>>>>> ERROR:core:receive_msg: no via found in reply
>>>>>>>> Apr 10 11:47:48 atl-sipgateway2 /usr/local/sbin/kamailio[15507]:
>>>>>>>> ERROR:core:receive_msg: no via found in reply
>>>>>>>> Apr 10 11:47:50 atl-sipgateway2 /usr/local/sbin/kamailio[15503]:
>>>>>>>> ERROR:core:receive_msg: no via found in reply
>>>>>>>> Apr 10 11:47:54 atl-sipgateway2 /usr/local/sbin/kamailio[15492]:
>>>>>>>> ERROR:core:receive_msg: no via found in reply
>>>>>>>> Apr 10 11:47:58 atl-sipgateway2 /usr/local/sbin/kamailio[15485]:
>>>>>>>> ERROR:core:receive_msg: no via found in reply
>>>>>>>> Apr 10 11:48:02 atl-sipgateway2 /usr/local/sbin/kamailio[15490]:
>>>>>>>> ERROR:core:receive_msg: no via found in reply
>>>>>>>> Apr 10 11:48:06 atl-sipgateway2 /usr/local/sbin/kamailio[15491]:
>>>>>>>> ERROR:core:receive_msg: no via found in reply
>>>>>>>> Apr 10 11:48:10 atl-sipgateway2 /usr/local/sbin/kamailio[15492]:
>>>>>>>> ERROR:core:receive_msg: no via found in reply
>>>>>>>>
>>>>>>>
>>>>>>
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>>>>>>
>>>>>
>>>>
>>>
>>
>