[Serusers] TCP high load problems

[Nils Ohlmeier]

Hi Klaus,

On Wednesday 26 July 2006 17:31, Klaus Darilion wrote:
> Scenario: sipp sends INVITE to ser, ser replies with 404. sipp sends
> 3000 INVITEs per second with TCP. sipp + ser on the same machine,
> packets will be snet over loopback device.
>
> Suddenly ser reports a bad message:
>
> Jul 26 16:39:31 t4000 ser[14152]: ERROR:parse_first_line: method not
> followed by SP
>
> Jul 26 16:39:31 t4000 ser[14152]: ERROR:parse_first_line: bad message
>
>   > rtpmap:0 PCMU/8000 087637 IN IP4 83.136.32.91sg:
>
> message=<p at 83.136.32.91:5066>;tag=6688

two things are coming to my mind:
- the log output looks like their are nor CRLF in the SDP but only CR. Please 
check with the hexoutput of ethereal how the lines and in this message, and 
maybe in the last request before.
- the content length if very important for TCP. If the content length of the 
previous request is wrong SER would try read the next request from within the 
SDP of the previous request (the one with the wrong content length). Could 
you check the Content-Length is correct in the previous requests?

These are just two ideas. I do not blame any software yet ;-)

  Nils

> Jul 26 16:39:31 t4000 ser[14152]: ERROR: receive_msg: parse_msg failed
>
>
> Although the message captured looks fine:
>
> INVITE sip:service at 83.136.32.91:5060 SIP/2.0
> Via: SIP/2.0/TCP 83.136.32.91:5066;branch=z9hG4bK-6688-0
> From: sipp <sip:sipp at 83.136.32.91:5066>;tag=6688
> To: sut <sip:service at 83.136.32.91:5060>
> Call-ID: 6688-14331 at 83.136.32.91
> CSeq: 1 INVITE
> Contact: sip:sipp at 83.136.32.91:5066
> Max-Forwards: 70
> Subject: Performance Test
> Content-Type: application/sdp
> Content-Length:  135
>
> v=0
> o=user1 53655765 2353687637 IN IP4 83.136.32.91
> s=-
> c=IN IP4 83.136.32.91
> t=0 0
> m=audio 6002 RTP/AVP 0
> a=rtpmap:0 PCMU/8000
>
>
> Any hints for the problem debugging?
>
> thanks
> klaus
> _______________________________________________
> Serusers mailing list
> Serusers at lists.iptel.org
> http://lists.iptel.org/mailman/listinfo/serusers