The STOMP 1.2 specification has been released today. STOMP 1.2 is mostly backwards compatible with STOMP 1.1. There are only two incompatible changes, which affect frame line endings and message acknowledgment. Apart from these, STOMP 1.2 introduces no new features but focuses on clarifying some areas of the specification.
STOMP is a platform-independent protocol used by message brokers including the open source servers ActiveMQ, Apollo, HornetQ, OpenMQ and RabbitMQ. For Delphi and Free Pascal, Habari Client libraries provide support for these message brokers.