Ilpo Kettunen opened SPR-16802 and commented
Documentation for STOMP External broker configuration mention org.projectreactor:reactor-net as needed dependency. But current Springframework depend on projectreactor Bismuth-SR9 which do not have that package anymore.
See: https://docs.spring.io/spring/docs/5.0.6.RELEASE/spring-framework-reference/web.html#websocket-stomp-handle-broker-relay
Affects: 5.0.6
Referenced from: commits 82a8e42, 9179a4f