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, 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 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 < miconda@gmail.com 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;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 < d.tryba@pocos.nl 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;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.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@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 listsr-users@lists.sip-router.orghttp://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
-- Daniel-Constantin Mierlahttp://www.asipto.comhttp://twitter.com/#!/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@lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
-- Daniel-Constantin Mierlahttp://www.asipto.comhttp://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda Kamailio World Conference, Berlin, May 18-20, 2016 - http://www.kamailioworld.com