At present, the Qpid Proton API provides no way to control JMS-style, local transactions. That is, there is no way to group messages production or consumption operations into atomic batches. With CMS and OpenWire deprecated in AMQ 7, this feature is urgently required, else customers will not be able to migrate to supported technologies.

The Python client does support local transactions so, presumably, there is no theoretical reason why the C++ client cannot.