**[Rossen Stoyanchev](https://jira.spring.io/secure/ViewProfile.jspa?name=rstoya05-aop)** opened **[SPR-13593](https://jira.spring.io/browse/SPR-13593?redirect=false)** and commented Undertow 1.3.1+ provides an API for upgrading to WebSocket at runtime similar to Tomcat. See https://github.com/undertow-io/undertow/commit/9180db6057f5804231d94d2fc149f551e29d61f4. --- **Affects:** 4.2.2 **Issue Links:** - #18073 Require Undertow 1.3.5+, Tyrus 1.11+, Jetty 9.3+, Tomcat 8.5+ (_**"is depended on by"**_) - #18106 ClassNotFoundException: org.xnio.StreamConnection in Wildfly 10.0.0.CR2 - #18197 UndertowRequestUpgradeStrategy not compatible with WildFly anymore - #18360 Compatibility with JBoss EAP 7 - #18694 Initial compatibility with Undertow 2.0 - #18900 Compatibility with Undertow 1.4 **Referenced from:** commits https://github.com/spring-projects/spring-framework/commit/8656186f60f680a0487fd238da6918fbe67724f6
Rossen Stoyanchev opened SPR-13593 and commented
Undertow 1.3.1+ provides an API for upgrading to WebSocket at runtime similar to Tomcat. See undertow-io/undertow@9180db6.
Affects: 4.2.2
Issue Links:
Referenced from: commits 8656186