[Serusers] rtpproxy but no nat translation needed

[CURRO_DOMINGUEZ]

Hello, 

thanks all the list for help me (and others) with nathelper and rtpproxy.

I want to test rtpproxy on my network, but without nat translation. It
means, udp streams have to go through my server.

I'm not sure what functions from nathelper module I have to use. My idea
is something like this:

if (method=="INVITE"){
          force_rtp_proxy();
          t_on_reply("1");
}
....

onreply_route[1]{
          force_rtp_proxy();
}

I don't know whether this code is enough, or I have to use another
functions like fix_nated_contact() or fix_nated_sdp() to rewrite Contact
an SDP headers.

Thanks for your help.