1 Apr
2020
1 Apr
'20
3:58 p.m.
Nothing else comes to mind based on info provided. May be you can send some
sip traffic captures and elaborate?
Regards,
--Sergiu
On Tue, Mar 31, 2020 at 10:29 PM Daniel W. Graham <dan(a)cmsinter.net> wrote:
Thanks, yeah I had already changed that, but
registration works with
either. I’m not asking for a solution, just looking for suggestions on
anything that needs attention, so I appreciate your pointers.
-dan
On Mar 31, 2020, at 8:55 PM, Sergiu Pojoga <pojogas(a)gmail.com> wrote:
Oh and almost forgot - try *add_path_received()* instead of add_path()
Good luck!
On Tue, Mar 31, 2020 at 8:48 PM Sergiu Pojoga <pojogas(a)gmail.com> wrote:
A lot of things may not be 'right' here,
unfortunately your question is
too broad to answer and too little info, the topology is indeed non-default
and I doubt someone will present you with a final solution (there's
business support, if you're looking for that).
Otherwise, if I were to just throw a guess:
- try fix_nated_register() (instead of set_contact_alias) just for
Register method on the way to the registrar
- in the Registrar, make sure the Contact's Path address is correct
Cheers,
--Sergiu
On Tue, Mar 31, 2020 at 7:34 PM Daniel W. Graham <dan(a)cmsinter.net>
wrote:
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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 <abalashov(a)evaristesys.com>
wrote:
_______________________________________________
Daniel,
Might this article be of aid?
http://www.evaristesys.com/blog/server-side-nat-traversal-with-kamailio-the…
-- 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 <pojogas(a)gmail.com> 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 <dan(a)cmsinter.net
<mailto:dan@cmsinter.net>> 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
>
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--
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/
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