[pjsip] RTCP in ICE candidate list

Dmytro Bogovych dmytro.bogovych at gmail.com
Mon Dec 16 06:44:03 EST 2013


Thank you, your advice really helped.

Yes, it is defined to 1.
Therefore RTCP candidate should be in candidate list.
However pjsua alters this behavior; the account/ice settings prevent on
this.

I think there is issue. The --help shows me --ice-no-rtcp is not default
on. But actually it is turned on - i checked via dc command.



On Sat, Dec 14, 2013 at 8:36 AM, Yuming Zheng
<zhengyumingnanjing at gmail.com>wrote:

> Sure,you can check  PJMEDIA_ADVERTISE_RTCP  in your config file,by default
> ,it is set to true,
> and have a look at this line  if (PJMEDIA_ADVERTISE_RTCP &&
> !acc_cfg->ice_cfg.ice_no_rtcp)
>
> hope this will help.
>
> Best Regard,
>
> Frank.zheng
>
>
> 2013/12/13 Dmytro Bogovych <dmytro.bogovych at gmail.com>
>
>> Greetings.
>>
>> I test the own implementation of softphone. It is not based on pjsip;
>> instead it uses combination of resiprocate/jrtplib/own ice & media stacks.
>>
>> I try to make ice traversal working for rtcp component too (rtp component
>> works good).
>>
>> The test peer is pjsua from 2.1.0 on Ubuntu 12.04 in virtualbox.
>>
>> The sent offer is:
>> <---INVITE sip:dbogovych1 at voipobjects.com SIP/2.0
>> <---Via: SIP/2.0/TCP 192.168.1.102:5060
>> ;branch=z9hG4bK-524287-1---a27da3758f4a7f37;rport
>> <---Max-Forwards: 70
>> <---Contact: <sip:dbogovych at 95.132.162.61
>> :5060;transport=tcp>;+sip.instance="8078730"
>> <---To: <sip:dbogovych1 at voipobjects.com>
>> <---From: <sip:dbogovych at license.crypttalk.com>;tag=ee352f5f
>> <---Call-ID: KcLpGZhqZzfz033okcroYg..
>> <---CSeq: 1 INVITE
>> <---Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, UPDATE, INFO, MESSAGE,
>> REFER, NOTIFY, SUBSCRIBE, REGISTER
>> <---Content-Type: application/sdp
>> <---Supported: timer, norefersub, replaces, eventlist
>> <---User-Agent: IntTalk_2.2.10
>> <---Content-Length: 991
>> <---
>> <---v=0
>> <---o=ITS_user 0 1 IN IP4 8046
>> <---s=ITS_session
>> <---c=IN IP4 95.132.162.61
>> <---t=0 0
>> <---a=ice-pwd:sxknaaiewaqajgizkrkfaz
>> <---a=ice-ufrag:itab
>> <---m=audio 8046 RTP/AVP 106 0 8 3 100 99 9 97 103 104 101
>> <---a=rtpmap:106 opus/16000
>> <---a=rtpmap:0 pcmu/8000
>> <---a=rtpmap:8 pcma/8000
>> <---a=rtpmap:3 gsm/8000
>> <---a=rtpmap:100 ilbc/8000
>> <---a=rtpmap:99 ilbc/8000
>> <---a=fmtp:99 mode=20
>> <---a=rtpmap:9 g722/16000
>> <---a=rtpmap:97 isac/16000
>> <---a=rtpmap:103 speex/8000
>> <---a=rtpmap:104 speex/16000
>> <---a=rtpmap:101 telephone-event/8000
>> <---a=silenceSupp:off - - - -
>> <---a=RS:0
>> <---a=RR:0
>> <---a=candidate:20490432 1 UDP 2113929471 192.168.56.1 8046 typ host
>> <---a=candidate:1711384768 1 UDP 2113929471 192.168.1.102 8046 typ host
>> <---a=candidate:1728161984 1 UDP 1677721855 95.132.162.61 8046 typ srflx
>> raddr 192.168.1.102 rport 8046
>> <---a=candidate:20490432 2 UDP 2113929470 192.168.56.1 8047 typ host
>> <---a=candidate:1711384768 2 UDP 2113929470 192.168.1.102 8047 typ host
>> <---a=candidate:1728161984 2 UDP 1677721854 95.132.162.61 8047 typ srflx
>> raddr 192.168.1.102 rport 8047
>>
>>
>> The answer is:
>> --->SIP/2.0 200 OK
>> --->Via: SIP/2.0/TCP 192.168.1.102:5060
>> ;rport=2712;received=95.132.162.61;branch=z9hG4bK-524287-1---a27da3758f4a7f37
>> --->Record-Route: <sip:0.0.0.0;lr;r2=on>
>> --->Record-Route: <sip:0.0.0.0;transport=tcp;lr;r2=on>
>> --->Contact: <sip:dbogovych1 at 95.132.162.61:59679;ob>;+sip.ice
>> --->To: <sip:dbogovych1 at voipobjects.com
>> >;tag=JVWGJPZQrdfCP4-Xf0.t41FCQP1lbC1X
>> --->From: <sip:dbogovych at license.crypttalk.com>;tag=ee352f5f
>> --->Call-ID: KcLpGZhqZzfz033okcroYg..
>> --->CSeq: 1 INVITE
>> --->Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, INFO, SUBSCRIBE,
>> NOTIFY, REFER, MESSAGE, OPTIONS
>> --->Content-Type: application/sdp
>> --->Supported: replaces, 100rel, timer, norefersub
>> --->Content-Length: 461
>> --->
>> --->v=0
>> --->o=- 3595921123 3595921124 IN IP4 95.132.162.61
>> --->s=pjmedia
>> --->b=AS:84
>> --->t=0 0
>> --->a=X-nat:8
>> --->m=audio 50889 RTP/AVP 0 101
>> --->c=IN IP4 95.132.162.61
>> --->b=TIAS:64000
>> --->b=RS:0
>> --->b=RR:0
>> --->a=sendrecv
>> --->a=rtpmap:0 PCMU/8000
>> --->a=ice-ufrag:761e30d2
>> --->a=ice-pwd:350aa3bd
>> --->a=candidate:Sa00020f 1 UDP 1862270975 95.132.162.61 50889 typ srflx
>> raddr 10.0.2.15 rport 4037
>> --->a=candidate:Ha00020f 1 UDP 1694498815 10.0.2.15 4037 typ host
>> --->a=rtpmap:101 telephone-event/8000
>> --->a=fmtp:101 0-15
>>
>> Why pjsua does not insert RTCP component information into candidate list?
>> Does it support RTCP in ICE?
>>
>> Thank you!
>>
>>
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