Hi Maxim,

It is good to know about the rtp_cluster, but aside simplifying things, it does not bring any new functionality - the LB and failover between RTPproxy nodes can be done now in OpenSIPS module . The most challenging thing we are looking at is the ability to move calls between different instances of RTPP (for HA purposes)..or some restart persistence for the sessions - without something like that it's very hard to deal with SW/HW failures ; there are ways to go around for scheduled stops/restarts (maintenance), but non for unexpected failures.

Thanks and Regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com

On 13.06.2014 00:36, Maxim Sobolev wrote:
Brett, on the HA/carrier-grade side there is little-advertized middle-layer component called "rtp_cluster", which in essence is load-balancing, transparent dispatcher that can be inserted in between some call-controlling component like OpenSIPS or Sippy B2BUA and bunch of RTPP instances running on the same or multiple nodes. From the point of view of that OpenSIPS it's just another RTPP instance.

And it handles all logic necessary to load-balance incoming requests between online instances plus it can handle dynamic re-confiduration of the cluster and track individual nodes going up and down. The code is pretty usable, we have it deployed for several customers and it's being actively developed as well. We have it working reliably controlling up to 30-40 RTPP instances scattered over at least 5 nodes.

http://sourceforge.net/p/sippy/sippy/ci/master/tree/rtp_cluster/

We have at least one pretty well known service provider whose name starts with capital V using it in combination with OpenSIPS to load balance RTP traffic via bunch of Amazon EC2 instances.


On Tue, May 27, 2014 at 6:52 AM, Brett Nemeroff <br...@nemeroff.com <mailto:br...@nemeroff.com>> wrote:

    Just wanted to add my 0.02 here..

    I totally agree with Bogdan. For the applications where opensips +
    a RTP relay make sense, HA and persistence are much more important.

    WebRTC and ICE are kinda applications in of themselves. And
    although these applications are going to grow in popularity, the
    "legacy" needs for an RTP relay are still massively prevalent in
    the space. A general push towards "Carrier Grade", resiliency and
    redundancy I think is much better for the project as a whole.

    Not only that, consider that applications requiring ICE or WebRTC
    will greatly benefit from HA / persistence, but not so much the
    other way around :)

    YMMV

    -Brett



    On Sun, May 25, 2014 at 6:30 AM, Bogdan-Andrei Iancu
    <bog...@opensips.org <mailto:bog...@opensips.org>> wrote:

        Hello,

        As always, the truth is in the middle.

        I agree RTPP is behind on certain things (and this is why we
        want to do them), but on the other hand it is a good platform
        with other good features (missing on the other relays). RTPP
        has better ability in individually controlling the stream
        (audio /video), ability to set timeouts and onhold with no
        conflicts, ability to generates events on timeout, more
        flexibility in handling symmetric / asymmetric NATs, ability
        to do media injection (playback), ability to do call recording

        What neither  mediaproxy, nor rtpengine have is a mechanism
        for implementing RTP failover (for ongoing calls) or restart
        persistence . This is something we want to look into. I would
        love to have ICE and WebRTC on my media relay, for the HA and
        persistence are more important I would say.

        Regards,

        Bogdan-Andrei Iancu
        OpenSIPS Founder and Developer
        http://www.opensips-solutions.com

        On 24.05.2014 01 <tel:24.05.2014%2001>:59, Muhammad Shahzad
        Shafi wrote:

        To be honest, i have stopped using rtpproxy for over 2 years
        now. It is not evolving as fast as it should be, specially in
        the context of ICE and WebRTC technologies.

        I would like to suggest that opensips team should consider
        adding support for rtpengine from SIPWise,

        https://github.com/sipwise/rtpengine

        For now mediaproxy from AG Projects is the only good choice
        for handling media in opensips with ICE support (though it
        still lacks WebRTC features).

        Thank you.

        On 2014-05-23 14:55, Bogdan-Andrei Iancu wrote:

        Going for a public exposure on this question to Maxim, maybe
        we will get an answer here.


        -------- Original Message --------
        Subject:        RTPproxy project
        Date:   Mon, 14 Apr 2014 15:03:31 +0300
        From:   Bogdan-Andrei Iancu
        To:     Maxim Sobolev
        CC:     Razvan Crainea



        Hello Maxim,

        Long time, no talks, but I hope everything is fine on your side.

        I'm reaching you in order to ask about your future plans in regards to
        the rtpproxy project? We see no much activity around it and other media
        relays are popping around.

        RTPP is an essential component for us, we invested a lot of work, we
        have many patches (extensions) for it (which we want to push to the
        public tree, but there is no answer on this) and we are also looking for
        investing a lot into big future plans (as adding more functionalities).

        Now, my question is - what is your commitment and disponibility for the
        RTPP project ? depending on that we what to re-position ourselves, as we
        do not want to waste time and work on things which are out of control.

        Best regards,

-- Bogdan-Andrei Iancu
        OpenSIPS Founder and Developer
        http://www.opensips-solutions.com


-- Mit freundlichen Grüßen
        Muhammad Shahzad
        -----------------------------------
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