[Kamailio-Users] NAThelper and multipart SDP

[Pascal Maugeri]

I tried to install mediaproxy but it looks tricky to install (many
dependencies, including kernel specific configurations) :-(
and I would like to stick to rtpproxy for performance reason.

Do you believe the same workaround using textops/filter_body can be used
using rtpproxy ? I think yes as these are two different things as said Juha.

Regards,
Pascal


On Fri, Jun 19, 2009 at 9:26 PM, Pascal Maugeri <pascal.maugeri at gmail.com>wrote:

>
>
> 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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