12 Apr
2009
12 Apr
'09
3:46 p.m.
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(a)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(a)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…
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(a)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(a)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(a)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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