It did help, I read that a couple times already but something is still not right, and its only because of the decoupling of the registrar. I need to do more debugging and see if Im loosing the flag value. Hoping something sticks out that someone sees and can point me in the right direction.
-dan On Mar 31, 2020, at 7:15 PM, Alex Balashov <[email protected]> wrote: > > Daniel, > > Might this article be of aid? > > http://www.evaristesys.com/blog/server-side-nat-traversal-with-kamailio-the-definitive-guide/ > > -- Alex > >> On Tue, Mar 31, 2020 at 11:12:23PM +0000, Daniel W. Graham wrote: >> >> It does but doesn't work as well as kamailio, and since the proxy is the >> entry point. >> >> The biggest issue here isnt the keepalive, as I did have that working. The >> main issue is the routing of messages, utilizing set_contact_alias and >> handle_ruri_alias, as Ive been unable to get ack and bye messages to make it >> past the proxy. I’m assuming these functions are not being used at the right >> locations or I need to rely on another mechanism to accomplish it. I also >> question my use of the PBX flag and the natmanage logic. >> >> -dan >> >> On Mar 31, 2020, at 7:01 PM, Sergiu Pojoga <[email protected]> wrote: >> >> >> Hi Daniel, >> >> From what you are describing, my understanding is that the Registrar is the >> PBX, kamailio is acting as an edge proxy. If so, doesn't the PBX/registrar >> have NAT traversal/keepalive mechanisms of its own? >> >> Regards, >> --Sergiu >> >> On Tue, Mar 31, 2020 at 1:55 PM Daniel W. Graham >> <[email protected]<mailto:[email protected]>> wrote: >> I’ve been missing with this for a while and seem to be missing something. >> Any suggestions on what is missing here? >> >> Trying to use set_contact_alias() and handle_ruri_alias() from nathelper >> module and nat_keepalive from nat_traversal module, without registrar. >> >> I had register keepalive working, that has since broke. When register >> keepalive was working, I was able to place call in either direction but ACK >> and BYE was not being routed past kamailio. >> >> Registrations are forwarded to the PBX using add_path() and is working. >> >> Also not included below is the routing to the PBX, that is just setting $du >> and t_relay, and is also working. >> >> Topology is: UA1 -> NAT -> kamailio -> PBX -> UA2 >> >> Using default config file as the example, modified with above changes. I >> also removed RTP config as that is a non-issue. >> >> request_route { >> …… >> # FLAG MESSAGES FROM PBX >> setflag(FLT_PBX); >> route(NATDETECT); >> …… >> >> route[NATDETECT] { >> if (nat_uac_test("19")) { >> force_rport(); >> set_contact_alias(); >> nat_keepalive(); >> } >> return; >> } >> >> route[WITHINDLG] { >> if (!has_totag()) return; >> if (loose_route()) { >> route(DLGURI); >> } else if ( is_method("ACK") ) { >> route(NATMANAGE); >> } else if ( is_method("NOTIFY") ) { >> record_route(); >> } >> route(RELAY); >> exit; >> } >> >> if (is_method("SUBSCRIBE") && uri == myself) { >> route(PRESENCE); >> exit; >> } >> if ( is_method("ACK") ) { >> if ( t_check_trans() ) { >> route(RELAY); >> exit; >> } else { >> exit; >> } >> } >> sl_send_reply("404","Not here"); >> exit; >> } >> >> route[NATMANAGE] { >> if(isflagset(FLT_PBX)) { >> handle_ruri_alias(); >> } >> if(!isflagset(FLT_PBX)) { >> set_contact_alias(); >> } return; >> } >> >> route[DLGURI] { >> if(!isdsturiset()) { >> handle_ruri_alias(); >> } >> return; >> } >> >> branch_route[MANAGE_BRANCH] { >> route(NATMANAGE); >> } >> >> onreply_route[MANAGE_REPLY] { >> if(status=~"[12][0-9][0-9]") { >> route(NATMANAGE); >> } >> } >> failure_route[MANAGE_FAILURE] { >> route(NATMANAGE); >> >> if (t_is_canceled()) exit; >> >> >> -dan >> >> _______________________________________________ >> Kamailio (SER) - Users Mailing List >> [email protected]<mailto:[email protected]> >> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users >> _______________________________________________ >> Kamailio (SER) - Users Mailing List >> [email protected] >> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users > >> _______________________________________________ >> Kamailio (SER) - Users Mailing List >> [email protected] >> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users > > > -- > Alex Balashov | Principal | Evariste Systems LLC > > Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) > Web: http://www.evaristesys.com/, http://www.csrpswitch.com/ > > _______________________________________________ > Kamailio (SER) - Users Mailing List > [email protected] > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users _______________________________________________ Kamailio (SER) - Users Mailing List [email protected] https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
