[OpenSIPS-Users] R: Media Proxy between LAN and WAN

[Mauro Davi']

Hi Brett,

 

below an extract of my opensips script file:

 

if the message is a INVITE:

 

use_media_proxy();

t_on_branch("1");

t_on_reply("1");

 

onreply_route[1]

{

        if (t_check_status("200"))

        {

                fix_nated_sdp("3", "xxx.yyy.zzz.204"); #public IP address

        }

}

 

branch_route[1]

{

        if(has_body("application/sdp")) {

                xlog("L_INFO","MESSAGE BODY <$mb>\n");

                fix_nated_sdp("3", "172.30.0.205");

                xlog("L_INFO","MESSAGE BODY <$mb>\n");

        }

}

 

So I don't use the use_media_proxy twice... But I think that the problem is created by using the fix_nated_sdp and the use_media_proxy function.

 

But I don't understand why...

 

Thanks 

            MD

________________________________

Da: Brett Nemeroff [mailto:brett at nemeroff.com] 
Inviato: mercoledì 13 maggio 2009 15:44
A: Mauro Davi'
Cc: users at lists.opensips.org
Oggetto: Re: [OpenSIPS-Users] Media Proxy between LAN and WAN

 

Mauro,

This effect:

c=IN IP4 0.0.0.0172.30.0.205

 

Where you get two ips shoved together, is usually the result of calling use_media_proxy (or whatever function you are using) more than once.

 

Of course, the 0.0.0.0 in there is a problem, you need a real IP

 

-Brett

 

On Wed, May 13, 2009 at 4:20 AM, Mauro Davi' <mauro.davi at acotel.com> wrote:

Hi All,

 

I have a Media Proxy installed in our VoIP platform. The Media Proxy machine have 2 Network card, one on a Private LAN the other on a WAN.

Now I configured the Media-Relay with the IP address 0.0.0.0 to listen to all the interfaces.

 

On opensips when then INVITE came from a UA directed to an internal network element (like PSTN Gateway or IVR) I want to manipulate the connection information in the SDP message content with the private IP address.

 

On the 200 OK I want to manipulate the connection information in the SDP message content with the public IP address.

 

In this way I hope that the Media Relay can work correctly...

 

But I have a problem, when I use the fix_nated_sdp (after the use_media_proxy function) on the INVITE sent to the Gateway I obtain the following SDP result:

 

 

v=0

o=- 0 2 IN IP4 192.168.193.54

s=CounterPath Bria

c=IN IP4 0.0.0.0172.30.0.205

t=0 0

m=audio 30058 RTP/AVP 0 101

a=sendrecv

a=rtpmap:101 telephone-event/8000

a=fmtp:101 0-15

a=x-rtp-session-id:EC003DF02E154A31AE923BD612B55FE7

a=direction:active

a=oldmediaip:192.168.193.54

 

the private IP address 172.30.0.205 is prefixed by the 0.0.0.0 inserted I think by the mediaproxy module.

 

There is a way to solve this problem?

 

Any suggestion?

 

Thanks in Advance

            MD

 


_______________________________________________
Users mailing list
Users at lists.opensips.org
http://lists.opensips.org/cgi-bin/mailman/listinfo/users

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.opensips.org/pipermail/users/attachments/20090513/1bfb1dd2/attachment.htm