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

[Geoffrey Mina]

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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>>
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