[SR-Users] ACK / BYE transaction problem

[Francisco Valentin Vinagrero]

Hi,

Does the ACK has the correct Router headers and R-URI? Maybe you can share the 200 OK and the ACK headers..

I had a similar issue 3 weeks ago.

Cheers, Francisco.

From: sr-users [mailto:sr-users-bounces at lists.sip-router.org] On Behalf Of Oliver Roth
Sent: 29 June 2016 15:55
To: sr-users at lists.sip-router.org
Subject: [SR-Users] ACK / BYE transaction problem


Hi all

Follow scenario

Class5 system [c5] --> Loadbalancer kamailio (dispatcher module) [lbl] ---> gateway kamailio [gw] --> carrier [carr]

I get Invites from [c5] with
Request ,To, from, contact, pid in national format 0794445566

[lbl] dispatches this to [gw]

For the [carr] I need international format.

So doing these transactions in [gw]
And sending to [carr] in international format

Request, to, from, contact, ... => 417794445566
Everything ok

Then I get a 100, 183 and even 200 from [carr]
Ack is coming from [c5] to [lbl] and [gw] - but then it stocks

The ACK is not sent to the [carr]

I kamailio log I see
DEBUG: RFC3261 transaction matching failed
DEBUG: t_lookup_request: no transaction found


So for me, the ACK cannot be assigned to a transaction and gets discarded by

if ( is_method("ACK") ) {
                                                               xlog(,"L_INFO", "WITHINDLG ACK - not loose route\n");
                                                               if ( t_check_trans() ) {
                                                                               xlog(,"L_INFO", "WITHINDLG ACK - t_check_trans() \n");
                                                                               # no loose-route, but stateful ACK;
                                                                               # must be an ACK after a 487
                                                                               # or e.g. 404 from upstream server
                                                                               t_relay();
                                                                               exit;
                                                               } else {
                                                                               xlog(,"L_INFO", "WITHINDLG ACK - not t_check_trans() DISCARD!!\n");
                                                                               # ACK without matching transaction ... ignore and discard
                                                                               route(NATMANAGE);
                                                                               #t_relay();
                                                                               #exit;



Any idea?

Problem with modifying the sip tags? Or problem with the dialog?


Thanks for helping
OIi



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