[SR-Users] How do I translate rtpproxy bridge mode config to mediaproxy-ng/rtpengine?

[Alex Villací­s Lasso]

El 26/08/14 12:02, Alex Villací­s Lasso escribió:
> El 25/08/14 18:28, Alex Balashov escribió:
>> On 08/25/2014 07:25 PM, Alex Villací­s Lasso wrote:
>>
>>> However, I do not find an equivalent to bridge mode in the rtpengine
>>> command-line parameters.
>>
>> Bridging mode of this type is not supported by rtpengine.
>>
> If this is true, then mediaproxy-ng/rtpengine should not be announced in the Kamailio documentation (http://www.kamailio.org/docs/modules/4.1.x/modules/rtpproxy-ng.html) as a "drop-in" replacement. At the very least, this requires a documentation fix.
>
> How would somebody implement the following scenario using rtpproxy or mediaproxy-ng/rtpengine ?
>
> - Server with 2 or more interfaces, at least one of which is public, and at least one of which is private (LAN)
> - Public interface runs webserver that publishes web phone (SIP.js or similar) for websocket
> - Webserver runs kamailio with access to both public and private interfaces
> - Websocket managed by kamailio, for SIP.js signaling
> - Private interface gives access to LAN where at least one traditional SIP client (UDP port 5060) registers with kamailio
> - Phone call initiated through websocket should contact SIP client in private LAN after proper authentication.
>
> Can this be done at all with current technologies? How?
>
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Just to clarify, the above scenario is not exactly what I want to implement. What I want to implement is interconnection between Kamailio (managing websockets) and Asterisk (which, by itself, could run websockets but is currently isolated).

The scenario is a multihomed server that runs asterisk in localhost only, and uses kamailio to simulate multiple domains, and to provide SIP presence support. Currently, rtpproxy works correctly (in traditional SIP) to bridge the RTP packets from localhost 
to each of the interfaces. The question is: can it be used to bridge DTLS-SRTP, without touching the (encrypted) payloads, and delegate the decryption to asterisk itself?