[PROTON-2825] C++ binding treats transaction coordinator termini incorrectly

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: proton-c-0.39.0
• Fix Version/s: proton-c-0.40.0
• Component/s: cpp-binding
• Assignee: Andrew Stitcher
• Reporter: Andrew Stitcher
• Created: 29/May/24 19:10
• Updated: 5 days ago 16:03
• Resolved: 29/May/24 20:43

Description

The C++ binding has no abstraction to represent a transaction coordinator terminus but when it receives an attach with a target terminus which is a transaction coordinator it just opens the link.

However because there is no correct abstraction for the transaction coordinator terminus the server end of the link cannot respond correctly to transaction messages being sent over this link. It doesn't even know that it is not just a regular target terminus.

As an aside, even if there was some way of knowing about the transaction coordinator there isn't any way in the C++ bindings to construct the correct disposition messages necessary to respond to the transaction control messages.

Currently the binding should just reject the initial attempt to attach the transaction controller terminus.