[Linphone-developers] STUN support in linphone 3.0.0

[v . malinovsky]

Hello,


I have a problem with the configuration of the STUN server in linphone  
3.0.0. I use the linux command line interface. If I configure the  
following in .linphonerc:

firewall_policy=2
stun_server=stun.sipgate.de:10000

then I see that STUN is not used during the registration.

So I decided to analyze the source code I found out the following  
fragment in "linphonecore":

                        /* we no more use stun for sip socket*/
#if 0
                        int mport=0;
                        ms_message("doing stun lookup for local address...");
                        if  
(stun_get_localip(lc,sock,linphone_core_get_sip_port(lc),result,&mport)){
                                if (!lc->net_conf.nat_sdp_only)
                                         
eXosip_masquerade_contact(result,mport);
                                return;
                        }
                        ms_warning("stun lookup failed, falling back  
to a local interface...");
#endif


So this clearly explains why STUN is not used during the registration  
process. I tried to compile linphone with un-commented stun support,  
but the compilation fails. I also checked the source code of previous  
versions of linphone (2.1.1) and there (according to the source code)  
STUN is enabled


When I looked further in "eXosip.c" I found out also the following  
strange thing, which might have a connection with the disabled STUN  
support


if (now - jr->r_last_tr->birth_time > 900)
          {
            /* automatic refresh */
            eXosip_register_send_register (jr->r_id, NULL);
       }


So my questions are


1. Is it possible to re-activate STUN again?
2. What is the purpose of these hard-coded 900 seconds?

Thanks & Best Regards,
Vesselin


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