Re: [SR-Users] TCP connection select problem

sorry，I have not expressed clearly. kamailio will recive two REGISTER at a time.In first 200 OK to REGISTER, Server will tell Linphone the Linphone Nat Ip and Port. like this: Via:SIP/2.0/TCP 30.9.2.1:50691;received=42.1.7.1;alias;branch=z9hG4bK.kmhC2L9Rf;rport=33746 and Linphone will know it's outside nat Ip and port, Linphone while use this Ip and Port in second REGISTER. like this: REGSITER Contact:<sip: 42.1.7.1:33746;transport=tcp> So kamailio server know Linphone's nated ip and port and save in DB(contact field). my question is KA_EDGE receive sip from KA_REGISTER already have right nat ip and port like INVITE 123456@42.1.7.1:33746;transport=tcp SIP/2.0 but KA_EDGE do not send this sip msg to 42.1.7.1:33746 <http://42.1.7.1:33746>, it send to another nat ip and port(other Linphone's ip and port behind same NAT layer) 2016-03-14 21:42 GMT+08:00 Daniel-Constantin Mierla &lt;miconda(a)gmail.com <mailto:miconda@gmail.com>>: Indeed, the ports are different, that's why adding received is important in this situation. While local ip and local port are in most of the cases also unique for devices behind a nat router, it is not 100% true, because there can be many layers of NATs, which can result in seeing same local ip/port for devices. Cheers, Daniel On 14/03/16 13:06, 张顺通 wrote: > source IP is same, But port is different。 > like INVITE > sip:Linphone_nat_Ip:Linphone_nat_port;tcp; > > > 2016-03-14 18:26 GMT+08:00 Daniel-Constantin > Mierla &lt;miconda(a)gmail.com > <mailto:miconda@gmail.com>>: > > Adding received information to Path helps > to identify properly the connection to be > used. Because both devices are behind the > same NAT, practically they show the same > source IP when they send traffic to server. > > Cheers, > Daniel > > > On 14/03/16 04:05, 张顺通 wrote: >> KA_EDGE have two IP，external public IP >> and internal IP. >> I add modparam("path", "use_received", 1) >> and replace add_path() >> to add_path_received() in edge server. >> add modparam("registrar", >> "path_use_received", 1) in KA_REGISTER >> server. >> >> DB path >> info <sip:aD15fXXXXXXXXXXXXeEpfqRY=@10.10.10.11 >> <http://10.10.10.11>;lr;ob> >> --> <sip:10.10.10.11;lr;received=sip:42.129.1.1:43640%3Btransport%3Dtcp> >> >> This kind of situation very little，It is >> not easy to reappear. >> Can you tell me why this situation >> happen? and Why this change can solve the >> problem? >> >> Thanks for Your Time. >> >> >> >> 2016-03-09 22:37 GMT+08:00 Daniel Tryba >> &lt;d.tryba(a)pocos.nl <mailto:d.tryba@pocos.nl>>: >> >> On Wed, Mar 09, 2016 at 10:05:11PM >> +0800, 张顺通 wrote: >> > Yes，Use Path in DB. like >> <sip:XXxXXXXXXXXXX/ogxZg=@10.10.232.29 <http://10.10.232.29>;lr;ob> >> > KA_REGISTER wile the path info in DB. >> >> Should not be a problem if you use >> the use_received options in >> http://kamailio.org/docs/modules/stable/modules/path.html#idp135216 >> and >> http://kamailio.org/docs/modules/stable/modules/registrar.html#registrar.p.… >> >> (and actually add the source as >> received on the kamailio edge server). >> >> _______________________________________________ >> SIP Express Router (SER) and Kamailio >> (OpenSER) - sr-users mailing list >> sr-users(a)lists.sip-router.org >> <mailto:sr-users@lists.sip-router.org> >> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users >> >> >> >> >> _______________________________________________ >> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list >> sr-users(a)lists.sip-router.org >> <mailto:sr-users@lists.sip-router.org> >> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users > > -- > Daniel-Constantin Mierla > http://www.asipto.com > http://twitter.com/#!/miconda > <http://twitter.com/#%21/miconda> - http://www.linkedin.com/in/miconda > Kamailio World Conference, Berlin, May 18-20, 2016 - http://www.kamailioworld.com > > > _______________________________________________ > SIP Express Router (SER) and Kamailio > (OpenSER) - sr-users mailing list > sr-users(a)lists.sip-router.org > <mailto:sr-users@lists.sip-router.org> > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users > > -- Daniel-Constantin Mierla http://www.asipto.com http://twitter.com/#!/miconda <http://twitter.com/#%21/miconda> - http://www.linkedin.com/in/miconda Kamailio World Conference, Berlin, May 18-20, 2016 - http://www.kamailioworld.com