[OpenSIPS-Users] Linphone and OpenSIPS over TCP

[sevpal]

Video and voice calls work fine with Linphone client over UDP, TCP, 3G/4G and wifi and when using a media proxy. Did not even try to install a TURN server to test your case, because Opensips does not have any modules to interact with a TURN server, you may be at a dead end with that. 

In the case of the SDP bodies being received by Opensips from the UA, these would need to be forwarded to the TURN server for modification and then returned to Opensips to be sent to the UA for the  media to be redirected.

Opensips interacts with the TURN in server MediaProxy only. 

From: Nabeel 
Sent: Tuesday, February 02, 2016 2:30 AM
To: OpenSIPS users mailling list ; hamid2kviii at hotmail.com 
Subject: Re: [OpenSIPS-Users] Linphone and OpenSIPS over TCP

Hi Hamid, 

I am not using the location table, I am using memory only to store the contacts. 

If you use TCP within the same network, where a TURN server is not required (TURN server not set in Linphone settings), I found that the calls then work depending on what the network allows. Within the same Wi-Fi network, in my case audio calls work but not video calls. But using 3G/4G only, with or without a TURN server set in Linphone settings, calls do not work at all. This is why I think the behaviour of TURN server has something to do with this. To those people stating that TCP works with Linphone, please test over 3G/4G where a TURN server might be required. 



On 2 Feb 2016 7:07 am, "Hamid Hashmi" <hamid2kviii at hotmail.com> wrote:

  Nabeel I have been using Linphone 3.6.1 with opensips for a long time. And its working fine on both UDP and TCP. I have gone through your logs, there is log line DBG:tm:matching_3261: RFC3261 transaction matching failed  Please check contact of your "to number" in location table.   


  Hamid R. Hashmi 
  Software Engineer - VoIP
  Vopium A/S




------------------------------------------------------------------------------
  Date: Mon, 1 Feb 2016 19:35:53 +0000
  From: nabeelshikder at gmail.com
  To: bogdan at opensips.org; users at lists.opensips.org
  Subject: Re: [OpenSIPS-Users] Linphone and OpenSIPS over TCP


  Hi Bogdan, 

  Below is the requested log for TCP call attempt.  User 1111 is trying to call user 2222 via OpenSIPS server 162.248.6.120 :

  http://pastebin.com/UQ9mEemd


  On 1 February 2016 at 09:41, Bogdan-Andrei Iancu <bogdan at opensips.org> wrote:

    Hi,

    I strongly suggest to look into the opensips logs and see what opensips try to do with the call. Based on your saying (that you see a timeout), I suspect your OpenSIPS tries to deliver the call over TCP to a destination which does not listen on TCP.
    If you do not know hoe to interpret the logs, run opensips in debug=4 mode, upload the logs corresponding the INVITE execution and provide the link.

    Regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.comOn 31.01.2016 16:28, Nabeel wrote:

      Without using alias=domain.com, TCP still does not work.  My initial request for someone to test this using Linphone remains. Please test and let me know if you can call using TCP with OpenSIPS listening on an IP address.

      On 31 January 2016 at 09:28, Nabeel <nabeelshikder at gmail.com> wrote:

        On further testing, using the IP address instead of the domain name in the URI setting of Linphone works with TCP, so I think this might be to do with SRV/NAPTR records associated with the domain.

        On 31 January 2016 at 08:29, Nabeel <nabeelshikder at gmail.com> wrote:

          Hello, 

          There seems to be a problem with calls over TCP using Linphone, and since Linphone is a popular open source application, I would like someone to please verify this problem. Calls work fine with Linphone over UDP, but after registering with TCP using the same credentials, calls do not connect at all and lead to a request timeout.  A request timeout does not say much about the cause, but in this case I suspect there is something wrong with TCP on the server side. I would like someone to please install Linphone on your phone and connect to your OpenSIPS server using UDP and TCP.  Please report here if the calls work over both transports.  



       

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