[sr-dev] MSRP forwarding problem

[Daniel-Constantin Mierla]

Hello,

can you try with the patch from this commit?

http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=b255c406ba09ff229361a3bc14cc1c9fd076b52e

Cheers,
Daniel

On 11/8/12 12:09 PM, Gavin Llewellyn wrote:
> I've been doing some testing of MSRP clients, using Kamailio as the 
> MSRP relay.  While testing file transfers, I found that certain files 
> were getting stuck at a consistent offset, though the offset varied 
> depending on the file.  With TCP traces, I found that Kamailio 
> continues to send 200 responses to the file sender, but stops 
> forwarding the chunks to the receiver.  This seems to continue until 
> the TCP read buffer overflows, at which point further chunks are 
> forwarded as normal (the previous chunks are lost).
>
> I suspected it may be due to file content, so after narrowing down the 
> chunk sizes, I've identified the two-character problem sequence: 0a 2d 
> (a.k.a. line-feed dash).  I can reproduce the issue with a simple, 
> single-chunk message where the body only contains these two 
> characters.  Is Kamailio getting this confused with the start of the 
> MSRP end-line?
>
> An example message is below, with all the CRs and LFs made explicit:
>
> MSRP wm4qf7sj SEND\r\n
> To-Path: msrp://192.168.0.74:2855/s.7692.44.867977799;tcp 
> msrp://192.168.0.74:2855/s.7693.28.862091983;tcp 
> msrp://192.168.0.144:2855/7k5myvdmx7;tcp\r\n
> From-Path: msrp://192.168.0.124:2855/8ka1fpl1bw;tcp\r\n
> Message-ID: 3561360866.5sxkocu6\r\n
> Success-Report: yes\r\n
> Failure-Report: yes\r\n
> Content-Disposition: inline\r\n
> Byte-Range: 1-2/2\r\n
> Content-Type: text/plain\r\n
> \r\n
> \n-\r\n
> -------wm4qf7sj$\r\n
>
> Regards,
> Gavin
>
>
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-- 
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio Advanced Training, Berlin, Nov 5-8, 2012 - http://asipto.com/u/kat
Kamailio Advanced Training, Miami, USA, Nov 12-14, 2012 - http://asipto.com/u/katu