[h323plus] H.235 sample

[Cláudio Palludetti]

Simon,

This will certainly help a lot.

Thanks

Claudio

On 16/01/2014, at 00:44, Simon Horne <s.horne at spranto.com> wrote:

> Claudio
> 
> Update:
> H323_ExternalRTPChannel with encryption support has been added to the CVS. 
> 
> There is a new wrapper channel for H323_ExternalRTPChannel called
> H323SecureChannel which handles all the key exchange and media
> encryption/decryption if required.
> 
> Simon
> 
> -----Original Message-----
> From: h323plus-bounces at lists.packetizer.com
> [mailto:h323plus-bounces at lists.packetizer.com] On Behalf Of Simon Horne
> Sent: 14 January 2014 05:07
> To: 'Cláudio Palludetti'; 'Jan Willamowius'; h323plus at lists.packetizer.com
> Subject: Re: [h323plus] H.235 sample
> 
> Claudio
> 
> Yes the current H.235 Implementation does not take into account the use of
> external RTP channel. I will put that on my TODO list to fix before the next
> release.
> 
> Simon
> 
> -----Original Message-----
> From: h323plus-bounces at lists.packetizer.com
> [mailto:h323plus-bounces at lists.packetizer.com] On Behalf Of Cláudio
> Palludetti
> Sent: 13 January 2014 22:12
> To: Jan Willamowius; h323plus at lists.packetizer.com
> Subject: Re: [h323plus] H.235 sample
> 
> Jan, 
> 
> Thank you.
> 
> I had some progress towards establishing a H.235 call but it is falling when
> it tries to open the logical channel.
> So my question is: Is it possible to use H.235 along with external channels?
> I'm asking this because H323RealTimeCapability::CreateChannel calls
> connection.CreateRealTimeLogicalChannel (where you can provide your own
> external channel subclass) but H323SecureRealTimeCapability::CreateChannel
> creates a new H323SecureRTPChannel (it does not call any function where you
> could return your own subclass). When I don't use H.235 I get the following
> log:
> 
> 2014/01/09 11:25:10.435 3         h323.cxx(4289) H323 Selecting
> G.711-uLaw-64k <1>
> 2014/01/09 11:25:10.435 3      h323neg.cxx(542) H245 Opening channel: T-101
> 2014/01/09 11:25:10.435 4     h323caps.cxx(3265) H323 FindCapability: 102
> 2014/01/09 11:25:10.435 4     h235caps.cxx(379) H235RTP Cloning Capability:
> G.711-uLaw-64k
> 2014-01-09:11.25.10 (8970) CltApp   DEBUG   (H323ClientConnection.cpp:357)
> Creating transmitter audio channel (G.711-uLaw-64k).
> 
> The last one is from my subclass. 
> 
> When I try to use H.235 I get:
> 
> 2014/01/09 15:55:00.655 3         h323.cxx(4289) H323 Selecting
> G.711-uLaw-64k <1>
> 2014/01/09 15:55:00.655 3      h323neg.cxx(542) H245 Opening channel: T-101
> 2014/01/09 15:55:00.655 4     h323caps.cxx(3265) H323 FindCapability: 102
> 2014/01/09 15:55:00.655 3     h323caps.cxx(3269) H323 Found capability:
> SecCapability [2] <102>
> 2014/01/09 15:55:00.656 4       osutil.cxx(189) PWLib File handle high water
> mark set: 37 PUDPSocket
> 2014/01/09 15:55:00.656 4       osutil.cxx(189) PWLib File handle high water
> mark set: 38 PUDPSocket
> 2014/01/09 15:55:00.656 2          rtp.cxx(1581) RTP_UDP Session 1 created:
> 192.168.14.43:5000-5001 ssrc=3823145998
> 2014/01/09 15:55:00.656 2          rtp.cxx(1314) RTP Adding session RTP_UDP
> 2014/01/09 15:55:00.656 4     h235caps.cxx(379) H235RTP Cloning Capability:
> G.711-uLaw-64k #
> 2014/01/09 15:55:00.656 3     channels.cxx(654) H323RTP Transmitter created
> using session 1
> 2014/01/09 15:55:00.656 4     h235chan.cxx(149) H235RTP OnSendingPDU
> 2014/01/09 15:55:00.656 3     channels.cxx(472) H323RTP OnSendingPDU
> 2014/01/09 15:55:00.656 3      h323rtp.cxx(134) RTP OnSendingPDU
> 2014/01/09 15:55:00.657 3       codecs.cxx(1247) Codec G711 uLaw encoder
> created for at 64k, frame of 160 samples
> 2014/01/09 15:55:00.657 5      osutils.cxx(2219) PTLib Created read/write
> mutex 0x7f85e4006b78
> 2014/01/09 15:55:00.657 5      osutils.cxx(2219) PTLib Created read/write
> mutex 0x7f85e4011398
> 2014/01/09 15:55:00.657 3       h323ep.cxx(2543) Codec Opened sound channel
> "Null Audio" for recording at 8000 samples/second using 2x320 byte buffers.
> 2014/01/09 15:55:00.657 1     channels.cxx(716) LogChan Transmit thread
> aborted (open fail) for G.711-uLaw-64k # <1>
> 
> I appreciate any help. Thanks in advance.
> 
> Claudio
> 
> -----Original Message-----
> From: h323plus-bounces at lists.packetizer.com
> [mailto:h323plus-bounces at lists.packetizer.com] On Behalf Of Jan Willamowius
> Sent: quarta-feira, 2 de outubro de 2013 10:50
> To: h323plus at lists.packetizer.com
> Subject: Re: [h323plus] H.235 sample
> 
> Hi Claudio,
> 
> take a look at the provided sample application "Simple".
> When you start it with command line argument "-m 128", it will do H.235 AES
> 128 media encryption.
> 
> Regards,
> Jan
> 
> --
> Jan Willamowius, Founder of the GNU Gatekeeper Project EMail  :
> jan at willamowius.de
> Website: http://www.gnugk.org
> Support: http://www.willamowius.com/gnugk-support.html
> 
> Relaxed Communications GmbH
> Frahmredder 91
> 22393 Hamburg
> Geschäftsführer: Jan Willamowius
> HRB 125261 (Amtsgericht Hamburg)
> USt-IdNr: DE286003584
> 
> 
> Cláudio Palludetti wrote:
>> Hi,
>> 
>> We are developing an H.323 EP  and we need to use the H.235. 
>> Is there any example using this?
>> We are using h323plus V1.24.0 and we enabled the H.235.
>> 
>> Thanks
>> 
>> Claudio
> 
> 
> 
> 
> 
>