[Kamailio-Users] NAThelper and multipart SDP

[Pascal Maugeri]

On Fri, Jun 19, 2009 at 9:13 PM, Juha Heinanen <jh at tutpro.com> wrote:

> Pascal Maugeri writes:
>
>  > So if I understand well (please correct me if I'm wrong) the "plan" is:
>  >
>  > 1º) I install MediaProxy and use Kamailio MEDIAPROXY module instead of
>  > rtpproxy/NATHelper
>  >
>  > 2º) filter the app/sdp part with
>  >
>  > if (has_body("multipart/mixed")) {
>  >     if (filter_body("application/sdp") {
>  >         remove_hf("Content-Type");
>  >
>  >         append_hf("Content-Type: application/sdp\r\n");
>  >     } else {
>  >
>  >         xlog("Body part application/sdp not found\n");
>  >     }
>  > }
>
> you don't need to call filter_body if you use mediaproxy.
>
>  > 3º) then engage the media proxy with
>  >
>  > if (method==INVITE && !has_totag()) {
>  >
>  >     # We can also use a specific media relay if we need to
>  >     #$avp(s:media_relay) = "1.2.3.4";
>  >     engage_media_proxy();
>  > }
>
> i have never used engage_media_proxy() functions, because it makes some
> assumptions that are not generally true.  i use use_media_proxy() instead.
>
>  > 4º) finally put the body part(s) that have been removed in 1º) and relay
> the
>  > INVITE to my next hop.
>  >      I believe I can save the body part(s) in 1º) and put them back
> using
>  > set_body(txt, content_type).
>
> you don't need to do anything like that if you use use_media_proxy()
> function, because it does not remove anything.
>

Thanks Juha ! I can't wait for monday to test it :-)

Have a nice week-end
Pascal



>
> -- juha
>
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