Add support for sending messages through (full-featured) STOMP brokers [SPR-10748]

[spring-projects-issues]

Rossen Stoyanchev opened SPR-10748 and commented

While #15371 will enable STOMP over WebSocket support in Spring applications, including an annotation-based programming model (#15373), full-featured message brokers (e.g. RabbitMQ, ActiveMQ, etc) with STOMP support have a wide range of features and many advantages.

This ticket will make it possible to use such brokers so that messages can be easily sent through them to subscribed clients from anywhere within the application.

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Affects: 4.0 M1

This issue is a sub-task of #13994

[spring-projects-issues]

Rossen Stoyanchev commented

This is done by plugging in a "STOMP relay" MessageHandler which can delegate STOMP messages to the message broker where messages are either coming from clients connected to the application server (over WebSocket) or from within the application when some service needs to broadcast a message. Reversely the "STOMP relay" also read messages from the STOMP broker and sends them downstream to connected WebSocket clients.