The ACK was indeed broken. The problem was at the SBC, where I did not expect
it.
Everything works as it should.
Thank you very much for your help.
Martin
______________________________________________________________
Od: "Klaus Darilion"
Komu:
Dátum: 28.08.2012 09:36
Predmet: Re: [SR-Users] Possible bug in authentication
CC: "SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) - Users Mailing
List", mico...@gmail.com
On 24.08.2012 14:41, mart...@centrum.sk wrote:
The Route and Record-route headers are identical.
From debug (when alias=domain.ch:5060):
----authentication of INVITE:
Aug 24 14:22:44 server /usr/sbin/kamailio[8588]: NOTICE: :
---------------------- In route(AUTH), just before
from_uri==myself ----------------------
Aug 24 14:22:44 server /usr/sbin/kamailio[8588]: DEBUG:
[socket_info.c:583]: grep_sock_info - checking if host==us: 10==9 &&
[domain.ch] == [127.0.0.1]
Aug 24 14:22:44 server /usr/sbin/kamailio[8588]: DEBUG:
[socket_info.c:587]: grep_sock_info - checking if port 5060 (advertise
0) matches port 5060
Aug 24 14:22:44 server /usr/sbin/kamailio[8588]: DEBUG:
[socket_info.c:583]: grep_sock_info - checking if host==us: 10==15 &&
[domain.ch] == []
Aug 24 14:22:44 server /usr/sbin/kamailio[8588]: DEBUG:
[socket_info.c:587]: grep_sock_info - checking if port 5060 (advertise
0) matches port 5060
Aug 24 14:22:44 server /usr/sbin/kamailio[8588]: DEBUG:
[socket_info.c:583]: grep_sock_info - checking if host==us: 10==9 &&
[domain.ch] == [127.0.0.1]
Aug 24 14:22:44 server /usr/sbin/kamailio[8588]: DEBUG:
[socket_info.c:587]: grep_sock_info - checking if port 5060 (advertise
0) matches port 5060
Aug 24 14:22:44 server /usr/sbin/kamailio[8588]: DEBUG:
[socket_info.c:583]: grep_sock_info - checking if host==us: 10==15 &&
[domain.ch] == []
Aug 24 14:22:44 server /usr/sbin/kamailio[8588]: DEBUG:
[socket_info.c:587]: grep_sock_info - checking if port 5060 (advertise
0) matches port 5060
Aug 24 14:22:44 server /usr/sbin/kamailio[8588]: NOTICE: :
---------------------- from_uri==myself evaluated as
TRUE!! ----------------------
Is this really a complete log? According to the log uri==myself should
return FALSE as the compared strings are never the same.
When I set alias=server.domain.ch:5060, from_uri==myself returns false
(when determining if INVITE should be authenticated,resulting in
replying 100 trying instead of 407 Proxy Auth Req) and loose_route()
starts returning true and relays the ACK correctly.
I can post more debug from this case also, but I didn't want to spam so
much in one message.
If you would like to see it, please let me know.
So .. Shall I consider the loose_route() part fixed and assume that
there MUST be a full name (hostname.domain:port) in the alias, when
Kamailio is not used as a primary proxy for the domain?
No. It is rather simple: domain.ch is not identical to domain.ch:5060
(as the first URI results in NAPTR+SRV lookups and my use another port
than 5060).
Thus, if you want that Kamailio detects domain.ch as local domain, add
"alias=domain.ch". If you want that Kamailio detects domain.ch:5060 as
local domain add alias=domain.ch:5060 (not sure if quotes are needed here).
If you want that Kamailio accepts both domains as local domains, then
add both alias.
Regardind loose_route: As Daniel mentioned, the ACK is broken.
regards
Klaus
What about the from_uri==myself part?
Martin
______________________________________________________________
> Od: "Klaus Darilion"
> Komu: "SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) -
Users Mailing List"
> Dátum: 23.08.2012 15:04
> Predmet: Re: [SR-Users] Possible bug in authentication
>
> CC: mico...@gmail.com
The Route URI (sent by SBC) must be identical to the Record-Route URI
(inserted by Kamailio).
To find out why loose_route returns FALSE increase log-level.
loose_route uses the "ismyself" function to evaluate if the Route header
addresses this Kamailio server. And the "ismyself" is very verbose when
doing this check.
regards
Klaus
On 23.08.2012 13:51, mart...@centrum.sk wrote:
> Ok, so .. I have a session border controller device that is a contact
> point for my SIP domain (SRV record in DNS set to its IP). All the
> trafic goes through it and it does things like topology hiding etc.. The
> device forwards the INVITE messages to Kamailio, because of the routing.
>
> The loose_route was working strangely, because it did not behave as
> described in the documentation.
>
> Here is the sip message that it was suppose to pass:
>
> ACK sip:a...@domain.ch:5060 SIP/2.0
>
> Via: SIP/2.0/UDP domain.ch;branch=z9hG4bKac386033013
>
> Max-Forwards: 70
>
> From: "acc2" ;tag=1c1749458918
>
> To: ;tag=1c1892801634
>
> Call-ID: 17494024742382012111116@
>
> CSeq: 2 ACK
>
> Contact:
>
> Route:
>
> Supported: em,timer,replaces,path,resource-priority
>
> Allow:
>
REGISTER,OPTIONS,INVITE,ACK,CANCEL,BYE,NOTIFY,PRACK,REFER,INFO,SUBSCRIBE,UPDATE
>
> User-Agent: SBC_DEVICE
>
> Content-Length: 0
>
> As you can see, there is a Route header and a To_tag .. so the
> loose_route function should return true. But instead, it returned false,
> then t_check_trans() also returned false and the routing logic exited
> (exit;).
>
> This happens when the value of alias is not enclosed in double quotes.
>
> PS.: There is a "-" symbol in the domain name. Can't that be a problem
> causing the need for the double quotes?
>
> PS2: Should there be only a domain name in the alias? or also the
> hostname part? ... for example: domain.ch:5060 or server.domain.ch:5060
>
> Martin
>
> ______________________________________________________________
> > Od: "Daniel-Constantin Mierla"
> > Komu: "SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) -
> Users Mailing List"
> > Dátum: 23.08.2012 12:21
> > Predmet: Re: [SR-Users] Possible bug in authentication
> >
>
> Hello,
>
> On 8/23/12 11:54 AM, mart...@centrum.sk
wrote:
>
> Hello to everybody.
>
> I am currently working with Kamailio 3.3.1 on RedHat.
>
> The "loose_route" function was not working correctly and I observed
> some very strange behaviour (not as one described in the
> documentation of the function).
>
> I have found that there needs to be a port included in the "alias"
> variable for the loose_route function to work correctly.
>
> However, upon adding the port to alias, the INVITE messages were no
> longer authenticated (Kamailio just accepted them and didn't send
> proxy-auth header in 407 message).
>
> My alias:
>
> alias="domain.ch:5060"
>
> Examining default routing logic, I found the problem here:
>
> if (is_method("REGISTER") || from_uri==myself)
>
> {
>
> # authenticate requests
>
> ...
>
> }
>
> The "from_uri==myself" was no longer evaluated as true, because
> there was a port at the end of the alias.
>
> The FROM Header of the INVITE messages looks like:
>
> From: "acc1" ;tag=12345
>
> ..so .. no port number there.
>
> Btw, I have fixed this with replacing the "myself" list with my own
> defined variable MY_DOMAIN.
>
> #!define MY_DOMAIN ".*@domain.ch"
>
> So now the condition looks like this:
>
> if (is_method("REGISTER") || from_uri=~MY_DOMAIN)
>
> {
>
> ...
>
> }
>
> I am not sure if this is a bug that needs to be fixed or not. I am
> just pointing my finger at it and I hope it will contribute to the
> development.
>
> Also, a valid description of this behavior (when using port in
> alias) would be appreciated.
>
>
> if you enclose the value of the alias parameter in double quotes, then
> it is taken as string value. If you want to set it to a host:port, then
> remove the double quotes:
>
> alias=domain.ch:5060
>
>
> Why do you say the loose_route() was working strangely? Do you add the
> hostname as record-route, not the IP address? Detail more about what you
> think is wrong with record routing/loose routing.
>
>
> Cheers,
> Daniel
>
> -- Daniel-Constantin Mierla
-http://www.asipto.comhttp://twitter.com/#
!/miconda
-http://www.linkedin.com/in/micondaKamailio Advanced Training, Berlin,
Nov 5-8, 2012 -http://asipto.com/u/kat
>
>
>
> _______________________________________________
> 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
>
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