[SR-Users] File transfering problem with RTPproxy

[Klaus Darilion]

For file transfer you need an MSRP relay. AFAIK rtpproxy can not handle 
MSRP.

See the MRSP module

http://kamailio.org/docs/modules/4.1.x/modules/msrp.html

regards
Klaus

On 29.01.2014 09:44, Wingsravi R wrote:
> Dear Daniel & Kamailio'ns
>
> I am working on File transferring feature between two SIP clients
> (IMSDroid). I have configured Kamailio (4.0.4) sever with RTPproxy to
> get the through NAT traversal of audio/videov calls. so fro that i added
> a script in kamailio.cfg  as like below (Forced all INVITES through
> RTPproxy) :
>
> if (is_method("INVITE")) {
>      setflag(7); # Set the qos flag
>         #if (has_sdp()) {
>
>            if(has_body("application/sdp")) {
>
>              if (rtpproxy_offer())
>                  t_on_reply("1");
>          } else {
>              t_on_reply("2");
>          }
>      }
>      #if (is_method("ACK") && has_sdp())
>          if (is_method("ACK") && has_body("application/sdp"))
>          rtpproxy_answer();
> ..
> ..
> onreply_route[1] {
> #    if (has_sdp())
>      if(has_body("application/sdp"))
>          rtpproxy_answer();
> }
>
> onreply_route[2] {
> #    if (has_sdp())
>      if(has_body("application/sdp"))
>         rtpproxy_offer();
> }
>
> But now when i am trying for File transferring (As per RFC 4975, Session
> mode IM) their INVITEs are also passing through RTPProxy service, which
> is dropping MSRP contents and with that Files are not getting
> transferring (But session is establishing between two clients).
> And when i tried file transferring without running RTPPproxy service.
> files are getting transferring. but that gives problems for audio/video
> calls.
>
> So anybody please help me in how to make it work for both MSRP&RTP packets.
>
> I mean how can i modify the script so that INVITE messges contains
> MSRP-RTP contents can be descriminate in the script, and then they can
> execute their respective blocks of scripts.
>
> And please find the attachments of my Kamailio.cfg file and file
> transfer traffic capture (tcpdump based) with RTPproxy instance running
> and without running.
>
> Any help will greatly appreciate.
>
> Awaiting for somebody's help.
>
> Regards
> Ravi
>
>
>
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