[OpenSIPS-Users] Functional Difference B2B_Bridge between OpenSIP 1.8 and 2.4.2

[Louis Rochon]

Thanks Ben! 2.4.6 indeed fixed the issue with the missing SDP in the ACK.

Unfortunately, a new problem has cropped up:

opensipsctl ping sip:1234 at 1.2.3.4 ALWAYS returns “200 OK”. I could point it to a dead IP and it still returns 200 OK.

In 2.4.2 and in 1.8, this returned “200” or whatever cause code the UA returned, and “408” for a time out. Now it’s always “200 OK”

Help again…..

From: Users <users-bounces at lists.opensips.org> On Behalf Of Ben Newlin
Sent: July 31, 2019 10:34 AM
To: OpenSIPS users mailling list <users at lists.opensips.org>
Subject: Re: [OpenSIPS-Users] Functional Difference B2B_Bridge between OpenSIP 1.8 and 2.4.2


WARNING: External Email: Exercise Caution

I’m not sure about the B2B behavior, but is there a reason you are not migrating to 2.4.6, which is the latest supported 2.4 release? It’s possible this problem has already been reported and fixed.

Ben Newlin

From: Users <users-bounces at lists.opensips.org<mailto:users-bounces at lists.opensips.org>> on behalf of Louis Rochon <Louis.Rochon at comtechtel.com<mailto:Louis.Rochon at comtechtel.com>>
Reply-To: OpenSIPS users mailling list <users at lists.opensips.org<mailto:users at lists.opensips.org>>
Date: Wednesday, July 31, 2019 at 10:29 AM
To: "users at lists.opensips.org<mailto:users at lists.opensips.org>" <users at lists.opensips.org<mailto:users at lists.opensips.org>>
Subject: [OpenSIPS-Users] Functional Difference B2B_Bridge between OpenSIP 1.8 and 2.4.2


Trying to upgrade my platform to OpenSIPS 2.4.2 (yea, about time, I know).



We use this to move established calls from one server to another:



/usr/local/sbin/opensipsctl fifo b2b_bridge <tupleID> sip:555 at 1.2.3.4 0



This works fine with OpenSIPS 1.8. The above causes this:

1. Invite (reinvite) to caller with no sdp.

2. RX of 200 OK with SDP from caller

3. Invite with SDP to 1.2.3.4

4. RX of 200 OK with SDP from 1.2.3.4

5. OpenSIPS send ACK WITH SDP to caller.



Call moved. All good.



With OpenSIPS 2.4.2:

1. Invite (reinvite) to caller with no sdp.

2. RX of 200 OK with SDP from caller

3. Invite with SDP to 1.2.3.4

4. RX of 200 OK with SDP from 1.2.3.4

5. OpenSIPS send ACK WITHOUT SDP to caller.



With 2.4.2, I get one way audio, very likely because of the lack of SDP in the ACK in point 5.



My research does not lead me anywhere on how why this behaviour changed between 1.8 and 2.4.2. I can't find any flags to set to get b2b_bridge command to have to old behaviour.



Help!



regards,

Louis
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