3 Apr
2020
3 Apr
'20
11:03 p.m.
OK, so there were some messages I still missed in the middle of the
discussion...
Can you get all log messages with debug=3 when the keepalive is
attempted to be sent?
Cheers,
Daniel
On 03.04.20 21:51, Daniel W. Graham wrote:
I resolved all of the routing issues. Only issue I’ve got now is
nat_keepalive not working when used with set/add_contact_alias().
-dan
*From: *"miconda(a)gmail.com" <miconda(a)gmail.com>
*Reply-To: *"miconda(a)gmail.com" <miconda(a)gmail.com>
*Date: *Friday, April 3, 2020 at 1:43 PM
*To: *Daniel Graham <dan(a)cmsinter.net>et>, "Kamailio (SER) - Users
Mailing List" <sr-users(a)lists.kamailio.org>
*Subject: *Re: [SR-Users] nathelper without usrloc
Somehow I thought that the keepalive is not working and you look for
fixing it. Now I read the full thread and actually the routing of
requests within dialog doesn't work.
Can you send a pcap with such a call taken on Kamailio system? ACK and
BYE should be routed based on Contact of INVITE/200ok and record-route
headers, no longer related to REGISTER (only initial INVITE should
rely on registration data).
Cheers,
Daniel
On 02.04.20 22:11, Daniel W. Graham wrote:
Same behavior with add_contact_alias()
-dan
*From: *"miconda(a)gmail.com" <mailto:miconda@gmail.com>
<miconda(a)gmail.com> <mailto:miconda@gmail.com>
*Reply-To: *"miconda(a)gmail.com" <mailto:miconda@gmail.com>
<miconda(a)gmail.com> <mailto:miconda@gmail.com>
*Date: *Thursday, April 2, 2020 at 2:59 PM
*To: *"Kamailio (SER) - Users Mailing List"
<sr-users(a)lists.kamailio.org>
<mailto:sr-users@lists.kamailio.org>, Daniel Graham
<dan(a)cmsinter.net> <mailto:dan@cmsinter.net>
*Subject: *Re: [SR-Users] nathelper without usrloc
Hello,
can you try with add_contact_alias() instead of
set_contact_alias()? The second one updates the contact URI in a
way that is visible for the couple of local modules immediately,
typically needed when having dialog/presence module in that
instance (still no changes to the header itself, it uses some
internal mechanism to signal contact value should be taken from a
special field). The first one uses the lumps system that makes the
changes over the contact URI not visible immediately (unless
msg_apply_changes() is used).
Maybe nat_keepalive() needs the original contact URI, not the one
updated by set_contact_alias().
Cheers,
Daniel
On 02.04.20 18:45, Daniel W. Graham wrote:
I was able to fix all issues, but have one partially lingering.
For register only, if I apply: set_contact_alias() with
nat_keepalive(), keepalives are not sent. Removing
set_contact_alias() fixes this.
I *shouldn’t need this if the pbx was saving received and
rport params as a result of add_path_received().
Can anyone explain why these two functions conflict?
Test scenario -
# Doesn’t result in register keepalive –
route[NATDETECT] {
force_rport();
set_contact_alias(); # removal of this enables keepalive
nat_keepalive();
return;
}
I’ve tested this with and without calls to handle_ruri_alias()
elsewhere in cfg script with same result.
-dan
*From: *sr-users <sr-users-bounces(a)lists.kamailio.org>
<mailto:sr-users-bounces@lists.kamailio.org> on behalf of
Sergiu Pojoga <pojogas(a)gmail.com> <mailto:pojogas@gmail.com>
*Reply-To: *"Kamailio (SER) - Users Mailing List"
<sr-users(a)lists.kamailio.org> <mailto:sr-users@lists.kamailio.org>
*Date: *Wednesday, April 1, 2020 at 8:58 AM
*To: *"Kamailio (SER) - Users Mailing List"
<sr-users(a)lists.kamailio.org> <mailto:sr-users@lists.kamailio.org>
*Subject: *Re: [SR-Users] nathelper without usrloc
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 <mailto:dan@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 <mailto:pojogas@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 <mailto:pojogas@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 <mailto:dan@cmsinter.net>> wrote:
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
<mailto:abalashov@evaristesys.com>> wrote:
https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
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--
Daniel-Constantin Mierla -- www.asipto.com <http://www.asipto.com>
www.twitter.com/miconda <http://www.twitter.com/miconda> --
www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda>
--
Daniel-Constantin Mierla -- www.asipto.com <http://www.asipto.com>
www.twitter.com/miconda <http://www.twitter.com/miconda> --
www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda>
--
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
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 <mailto:pojogas@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><mailto:dan@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)
http://www.csrpswitch.com/
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