Hi Alexnader,
The dialog is not destroyed by the received negative replies, but when
opensips forwards the negative reply back to the caller side.
So, in your case, the dialog will be ended when the 487 reply is sent
from OpenSIPS to FS. That following ACK (from FS) is not a in-dialog
ACK, but a hop-by-hop transactional ACK and it should hit TM in your
script.
Regards,
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com
On 19.05.2014 08:19, Alexander Mustafin wrote:
Good day!
I’ve a problem with negative replies retransmission. Dialog is
destroyed at this moment by upstream negative reply. How to prevent
this behaviour?
FS OpenSIPS AST1 AST2
0.000000 |--------->| | |
INVITE sip:[email protected] | +SDP [0s]
0.351449 |<---------| | | 100
Giving a try [0.35s]
0.351919 | |------------------>| | INVITE
sip:[email protected] | +SDP [0.35s]
0.354767 | |<------------------| | 100
Trying [0.35s]
1.309592 | |<------------------| | 603 [1.31s]
1.310000 | |------------------>| | ACK
sip:[email protected] [1.31s]
1.886184 | |-------------------------->| INVITE
sip:[email protected] | +SDP [1.89s]
1.951046 | |<--------------------------| 100 Trying [1.95s]
6.725141 | |<--------------------------| 183 Progress |
+SDP [6.73s]
6.726316 |<---------| | 183 Progress | +SDP [6.73s]
6.799651 | |<--------------------------| 180 Ringing [6.8s]
6.800444 |<---------| | 180 Ringing [6.8s]
13.996213 |--------->| | CANCEL
sip:[email protected] [14s]
14.259989 | |--------------------------->| CANCEL
sip:[email protected] [14.26s]
14.321767 | |<---------------------------| 200 OK [14.32s]
14.322271 | |<---------------------------| 487 Request
Terminated [14.32s]
14.322748 | |--------------------------->| ACK
sip:[email protected] [14.32s]
14.323271 |<---------| | 487 Request Terminated [14.32s]
14.323859 |--------->| | ACK sip:[email protected]
[14.32s]
14.825038 |<---------| | 487 Request Terminated [14.83s]
14.825669 |--------->| | ACK sip:[email protected]
[14.83s]
15.826212 |<---------| | 487 Request Terminated [15.83s]
15.826901 |--------->| | ACK sip:[email protected]
[15.83s]
17.821087 |<---------| | 487 Request Terminated [17.82s]
17.821674 |--------->| | ACK sip:[email protected]
[17.82s]
21.827427 |<---------| | 487 Request Terminated [21.83s]
21.828124 |--------->| | ACK sip:[email protected]
[21.83s]
Best regards,
Alexander Mustafin
[email protected] <mailto:[email protected]>
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