Hi,
I made some fixes regarding some similar cases - BYE not being
transmitted on the other side, but only in trunk now. I will make the
backport now and let you know when it is done.
Regards,
--
Anca Vamanu
www.voice-system.ro
On 10/06/2010 07:45 PM, thrillerbee wrote:
I've setup several OpenSIPS proxies (keeping track of
dialogs,acc,etc.) behind a OpenSIPS B2BUA (to implement topology
hiding - nothing else).
I'm currently using version 1.6.3 on both the proxy & b2bua. I
updated the b2bua modules from svn yesterday.
Certain dialogs "hang" because of how the B2BUA handles an
inappropriate response to an INVITE in a never-established (canceled)
dialog coupled with the proxy establishing a dialog after a CANCEL has
been processed.
After the initial call attempt is canceled, the upstream carrier
responds with a 200 OK to the INVITE. The B2BUA sends that back to
the OpenSIPS proxy. The OpenSIPS proxy creates a dialog even though
the INVITE has been canceled. Soon afterwards, a BYE is received from
upstream but the B2BUA does not send that back to the proxy. As a
result, the dialog hangs (until the timeout is reached). I've tried
to show the call flow below:
proxy b2bua carrier
----- INV ----->
<---- 100 ------
------ INV ---->
<----- 100 -----
<----- 183 -----
<---- 183 ------
--- CANCEL ---->
<- 200(cancel)--
--- CANCEL ---->
<- 200(cancel)--
<- 200(invite)--
<- 200(invite)--
<- 200(invite)--
<- 200(invite)--
<- 200(invite)--
<- 200(invite)--
<- 200(invite)--
<- 200(invite)--
<- 200(invite)--
<- 200(invite)--
<- 200(invite)--
<- 200(invite)--
<----- BYE -----
<- 200(invite)--
<----- BYE -----
<- 200(invite)--
I'm hoping I'm doing something stupid in my implementation that could
cause this behavior. Thanks for any help that might resolve this issue.
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