Technically we could use the HTTP connector to send data and the JMS connector to listen for new messages. However, your Boomi license costs for Solace will double by doing this. Not a real option in practice.
Regarding the transaction option: this is currently not supported by the Solace JMS connector, which we prefer instead of the generic JNDI connector. JNDI is very limited compared to the branded connector: it does not support dynamic queues and subscribers, wild cards and the ability to Solace properties (TTL etc) on message level. We are therefore waiting for a new version of the branded Solace JMS connector.