[OpenSER-Users] Problem with Mediaproxy

Daniel d.grotti at gmail.com
Fri Dec 7 11:37:52 CET 2007


Dear all,
I'm testing my proxy and I'm using mediaproxy for natted client.
Everything works fine, if there is a client behind nat calling a public
user, mediaproxy works fine. This is true also if there is a public client
calling a natted user.

I have some problem when there are 2 client behind NAT.

1. I tryed to test the system with 1 client behind NAT and 1 client behind
the SAME NAT (both of client under the same subnet:192.168.10.x).
     In this case Mediaproxy doesn't work. RTP in direct between clients.

2. I tryed to test the system with 1 client behind NAT and 1 client behind
the SAME NAT (with clients under different subnet:192.168.10.x and
192.168.0.x).
     In this case Mediaproxy doesn't work. RTP in direct between clients.

This is Mediaproxy Debug in the last case:

**********************************************
Dec  7 10:37:36 SERVER mediaproxy[2116]: request
ZDhiMWM2NDhmNzQ1ODNjYThkZjIxZGNiMmEzZmQxMjI. 192.168.0.167:58786:audio
NAT_IP PROXY_IP remote NAT_IP remote
X-Lite=20release=201011s=20stamp=2041150 info=from:userA at PROXY_IP,
to:UserB at PROXY_IP,fromtag:c1310701,totag:
Dec  7 10:37:36 SERVER mediaproxy[2116]: session
ZDhiMWM2NDhmNzQ1ODNjYThkZjIxZGNiMmEzZmQxMjI.: started. listening on
MEDIAPROXY_IP:60014
Dec  7 10:37:36 SERVER mediaproxy[2116]: execution time:  1.56 ms
Dec  7 10:37:43 SERVER mediaproxy[2116]: lookup
ZDhiMWM2NDhmNzQ1ODNjYThkZjIxZGNiMmEzZmQxMjI. 192.168.10.224:25732:audio
NAT_IP PROXY_IP remote unknown unknown
X-Lite=20release=201011s=20stamp=2041150 info=from:UserA at PROXY_IP,
to:UserB at PROXYIP,fromtag:c1310701,totag:67246350
Dec  7 10:37:43 SERVER  mediaproxy[2116]: execution time:  0.51 ms
Dec  7 10:38:00 SERVER mediaproxy[2116]: delete
ZDhiMWM2NDhmNzQ1ODNjYThkZjIxZGNiMmEzZmQxMjI. info=
Dec  7 10:38:00 SERVER mediaproxy[2116]: session
ZDhiMWM2NDhmNzQ1ODNjYThkZjIxZGNiMmEzZmQxMjI.: 0/0/0 packets, 0/0/0 bytes
(caller/called/relayed)
Dec  7 10:38:00 SERVER mediaproxy[2116]: session
ZDhiMWM2NDhmNzQ1ODNjYThkZjIxZGNiMmEzZmQxMjI.: ended.
Dec  7 10:38:00 SERVER mediaproxy[2116]: execution time:  0.61 ms
*******************************

 I am sure of mediaproxy change SDP parameter even in these last cases (I
can see on openser debug that proxy send out, for example, a 200 OK with SDP
part changed. And xlogs DEBUG show me that openser enters in
"use_media_proxy" routine) .

But when I sniff the packet on client side, I see SDP part with private IP !

Any suggestion?

Regards,
daniel

-- 
Daniel Grotti
________________________
e-mail : d.grotti at gmail.com
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