[Serusers] rtpproxy but no nat translation needed

[Klaus Darilion]

Bernie Hoeneisen wrote:
> Hi!
> 
> I have such a setup because in my scenario only the Media Proxy has the
> rights to receive connections coming from the Internet. Direct traffic to
> all other hosts (UAs) is blocked.
> 
> It might be that you have to insert one more line,
>  i.e.  setflag(1)   (don't ask me why...:-) )
>
depends on who uses the flag "1", e.g. the accounting module.

> Below a cut-past from my testing configuration, which seems to work fine
> 
> ----
> 
> [...]
>         # force RTP-proxy
>         if (method=="INVITE") {
>                record_route();
>                setflag(1);
>                force_rtp_proxy();
>                /* set up reply processing */
>                t_on_reply("1");
>         };
> 
>         # forward to current uri now; use stateful forwarding; that
>         # works reliably even if we forward from TCP to UDP
>         if (!t_relay()) {
>                 sl_reply_error();
>         };
> 
> }
> 
> # RTP-proxy
> # all incoming replies for t_onrepli-ed transactions enter here
> onreply_route[1] {
>       if (status=~"[12][0-9][0-9]")
>                force_rtp_proxy();
> }
> 
> ---
> 
> 
> Be prepared on the following possible issues:
> 
> - Clients, which do not support symetric media (sender port==receiver
>   port) will probably not work. (Most of those anyway do not work behind
>   NAT.)

I think this issue is solved with the new rtpproxy.

klaus
> 
> - If you have more than one media (e.g. Audio and Video) in the same
>   sesssion, only one media (the first m= line) is proxied correctly. The
>   other media probably won't work (general issue).
> 
> - if there are two or more Media Proxies in a row in your session, you
>   might end up in a deadlock situation, resulting in no media transmitted
>   (general issue).
> 
> 
> Have fun!
> 
>  T: Bernie
> 
> 
> On Wed, 18 Feb 2004, CURRO_DOMINGUEZ wrote:
> 
> 
>>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.
>>
>>
>>
>>
>>_______________________________________________
>>Serusers mailing list
>>serusers at lists.iptel.org
>>http://lists.iptel.org/mailman/listinfo/serusers
>>
> 
> 
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