**[Juergen Hoeller](https://jira.spring.io/secure/ViewProfile.jspa?name=juergen.hoeller)** opened **[SPR-12311](https://jira.spring.io/browse/SPR-12311?redirect=false)** and commented Aligned with #14596, WebSocketSession should extend the `java.io.Closeable` interface. --- **Issue Links:** - #14596 Implement java.io.Closeable where appropriate - #17447 TcpConnection should extend java.io.Closeable **Referenced from:** commits https://github.com/spring-projects/spring-framework/commit/e56559fd4de4d2c105c70c2f8e03cf92506b2510