[SIP Beyond VoIP] MSRP relay very unstable

Dan Pascu dan at ag-projects.com
Tue Apr 22 08:26:33 CEST 2014

Patches are welcome

On 21 Apr 2014, at 14:27, Prasun Bheri wrote:

> Hi Adrian, 
> Issue seems to be linked with large number of chunks in a transfer.
> We have tested our setup with Blink client (latest version 0.8.0) and noticed that client is chunking file at around 60k bytes per chunk. at this rate there are far fewer chunks compared to our scenario where chunking is done for every 2k bytes. 
> When we configure our client to chunk at 60k its behavior is much similar to Blink; majority of file transfers are succeeding however there are still some failures similar to Blink client (on transferring 30 files [~5mb each] simultaneously between two Blink clients 2 got cancelled automatically).
> To identify data corruption I have generated a file containing numbers in increasing order and transferred this file over tcp. In wireshark we can clearly see that file is sent to server successfully however at receiving end additional bytes (portion of 7 hyphens transaction id built by source client) are present.  Please have a look at these wireshark captures uploaded here http://msrprelay.org/issues/2501. 
> If you watch the tcp stream of data transfer in receivers capture note that "-----" is sent extra after number 58682. similarly after number 115492 "-------YS7dPeoD+\r" is sent extra and lastly after number 270628 "-------O" is sent extra.
> Thanks & Regards,
> Prasun


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