[Serusers] rtpproxy mess
Marian Dumitru
marian.dumitru at voice-sistem.ro
Thu Feb 3 21:33:48 CET 2005
Hi Christian,
To configure rtpproxy to do bridging, just set the listen parameter as
"-l addr1/addr2". In your configuration I guess addr1 is the private
address and addr2 is the public one.
But be careful about using a chain of rtpproxy - you can end having a
dead-lock for the media relaying. More information about the
force_rtp_proxy flags can be found in modules/nathelper/nathelper.c at
the beginning; also take a look at the example
modules/nathelper/examples/alg.cfg.
Best regards,
Marian
Christian de Balorre wrote:
> Thanks for your previous rtpproxy workaround.
>
> Here is actually what I want to do (not really extraordinary, inter-sites
> design) :
>
>
> __ priv net __ pub net __ priv net __
> |__|<------->|__|<------------>|__|<------------>|__|
> ua1 rtp rtp ua2
> site1 proxy1 proxy2 site 2
>
> rtp stream should always flow between ua1 et ua2 through rtpproxy1 and
> rtpproxy2 (or vice versa of course)
> each rtp server is also a ser server with 2 interface, one in priv net and
> the other in pub net
> there is no nat involved
>
> I guess we can call this bridging... Can rtpproxy do that ?
>
>
>
> ----- Original Message -----
> From: "Marian Dumitru" <marian.dumitru at voice-sistem.ro>
> To: "Christian de Balorre" <cdebalorre at neotelecoms.com>
> Cc: <serusers at lists.iptel.org>
> Sent: Thursday, February 03, 2005 3:35 PM
> Subject: Re: [Serusers] rtpproxy mess
>
>
>
>>Hi Christian,
>>
>>Please see my inline comments.
>>
>>Best regards,
>>Marian
>>
>>Christian de Balorre wrote:
>>
>>>Thanks for your answer Marian.
>>>You are right indeed : if I run ser as root I don't get the errors. Any
>>>solution to run rtpproxy as user other than root ?
>>
>>There is no parameter that will force rtpproxy to do chown by itself;
>>So, the only way is to launch rtpproxy as a different user than root.
>>
>>
>>>Last question about rtpproxy :
>>>It is running on a xhomed box (2 interfaces) : shall we tell rtproxy
>>>explicitly what is inbound / outbound interface - if yes how - or can it
>>>handle the situation automatically ?
>>
>>Do you want to run rtpproxy in bridging mode (private<->public) ?
>>
>>
>>>----- Original Message -----
>>>From: "Marian Dumitru" <marian.dumitru at voice-sistem.ro>
>>>To: "Christian de Balorre" <cdebalorre at neotelecoms.com>
>>>Cc: <serusers at lists.iptel.org>
>>>Sent: Thursday, February 03, 2005 2:16 PM
>>>Subject: Re: [Serusers] rtpproxy mess
>>>
>>>
>>>
>>>
>>>>Hi Christian,
>>>>
>>>>Since you are using as communication between SER and RTPPROXY UNIX
>>>>sockets, your error has nothing to do with the used interfaces. Most
>>>>probably it's a problem of permissions on the UNIX socket file - like
>>>>SER has no permission to write on the file.
>>>>
>>>>Best regards,
>>>>Marian
>>>>
>>>>
>>>>Christian de Balorre wrote:
>>>>
>>>>
>>>>>Hello,
>>>>>I am struggling with rtpproxy and I would like some help, because the
>>>>>documentation is rather scarce to be honest.
>>>>>I am running ser on an OpenBSD 3.3 box, with one internal interface
>>>>>(192.168.x.x) and a public interface (62.x.x.x).
>>>>>I am not sure wether I have to force rtpproxy to listen to a specific
>>>>>interface or not.
>>>>>
>>>>>I launch rtpproxy rather basically with ./rtpproxy -s
>>>
>>>/var/run/rtpproxy.sock
>>>
>>>
>>>>>Then I launch ser, it spawns some process and then run into race
>>>>>condition (see ps -aux below)
>>>>>Here is log file :
>>>>>
>>>>>Feb 2 15:34:28 cdg8-ser1 ser: WARNING: could not read from /dev/random
>>>
>>>(5)
>>>
>>>
>>>>>Feb 2 15:34:28 cdg8-ser1 ./ser[20970]: ERROR: send_rtpp_command: can't
>>>>>connect to RTP proxy
>>>>>Feb 2 15:34:28 cdg8-ser1 ./ser[32404]: ERROR: send_rtpp_command: can't
>>>>>connect to RTP proxy
>>>>>Feb 2 15:34:28 cdg8-ser1 ./ser[32404]: WARNING: rtpp_test: can't get
>>>>>version of the RTP proxy
>>>>>Feb 2 15:34:28 cdg8-ser1 ./ser[32404]: WARNING: rtpp_test: support for
>>>
>>>
>>>>>RTP proxyhas been disabled temporarily
>>>>>Feb 2 15:34:28 cdg8-ser1 ./ser[20970]: WARNING: rtpp_test: can't get
>>>>>version of the RTP proxy
>>>>>Feb 2 15:34:28 cdg8-ser1 ./ser[20970]: WARNING: rtpp_test: support for
>>>>>RTP proxyhas been disabled temporarily
>>>>>Feb 2 15:34:28 cdg8-ser1 ./ser[147]: ERROR: send_rtpp_command: can't
>>>>>connect to RTP proxy
>>>>>...
>>>>>
>>>>>
>>>>>And the ps
>>>>>
>>>>>USER PID %CPU %MEM VSZ RSS TT STAT STARTED TIME
>>>
>>>COMMAND
>>>
>>>
>>>>>ser 16586 99.0 0.5 1744 2672 ?? R 3:34PM 6:15.11 ./ser
>>>>>-P /var/run/ser.pid
>>>>>root 16613 0.0 0.1 752 272 ?? Ss 3:33PM 0:00.01
>>>>>./rtpproxy -s /var/run/rtpproxy.sock
>>>>>
>>>>>
>>>>>#./rtpproxy -v
>>>>>20040107
>>>>># ./ser -V
>>>>>version: 0.8.14 (i386/openbsd)
>>>>>
>>>>>Nathelper config :
>>>>>
>>>>>#-------------- nathelper parameters
>>>>>modparam("nathelper", "natping_interval", 30)
>>>>>modparam("nathelper", "ping_nated_only", 1)
>>>>>modparam("nathelper", "rtpproxy_sock", "/var/run/rtpproxy.sock")
>>>>>
>>>>>Could it be that ser running as ser user cannot read the rtpproxy
>
> socket
>
>>>>>(running as root) ?
>>>>>
>>>>>Thanks
>>>>>
>>>>>Christian
>>>>>
>>>>>
>>
>>>>------------------------------------------------------------------------
>>>>
>>>>>_______________________________________________
>>>>>Serusers mailing list
>>>>>serusers at lists.iptel.org
>>>>>http://lists.iptel.org/mailman/listinfo/serusers
>>>>
>>>>--
>>>>Voice System
>>>>http://www.voice-system.ro
>>>>
>>>
>>>
>>>_______________________________________________
>>>Serusers mailing list
>>>serusers at lists.iptel.org
>>>http://lists.iptel.org/mailman/listinfo/serusers
>>>
>>
>>--
>>Voice System
>>http://www.voice-system.ro
>>
>
>
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