b2bua cannot bridge to different protocol

[skhrshin]

Overview

b2bua cannot connect to another SIP server on protocol different than the one b2bua is listening on.

Environment

Flexisip 2.3.4 on Debian GNU/Linux bookworm

Steps to reproduce

1. Set up b2bua-server with application=sip-bridge and transport=sip:127.0.0.1:6067;transport=udp
2. Set up sip-bridge so that it would attempt to connect to some SIP server with ;transport=tcp
3. Call from client connecting to the proxy so that b2bua would transfer to the SIP server on TCP.

Expected behavior

b2bua can connect to the SIP server on TCP.

Actual behavior

b2bua emits the following error and cannot connect to the destination.

belle-sip-error-No listening point matching for [tcp://<destination address>:<destination port>]

Remarks

b2bua seems to be unable to connect with TCP when it is listening on UDP, and unable to connect with UDP when it is listening on TCP.

[ThibaultLemaire]

This is a known issue and has been fixed in b3400b6 which will be part of the upcoming 2.4 release