WebSocketServer crashes when overridden methods throw Exceptions #1481

Describe the bug
WebSocketServer crashes when overridden methods (onClose, onError) throw Exceptions.
It hit us in production: Due to circumstances, our implementation threw some exceptions in the wrong places for one "bad" websocket client. The exceptions led to the WebSocketServer crash: The server wasn't accepting any more client connections, even from "good" clients.

To Reproduce
Steps to reproduce the behavior: I've prepared a minimal reproducer:

1. Go to https://github.com/proxy/gist.github.com/cvilsmeier/de7d1f3419f421de132b1acf16e7b04f
2. Execute the program

Example application to reproduce the issue
Please see https://github.com/proxy/gist.github.com/cvilsmeier/de7d1f3419f421de132b1acf16e7b04f

Expected behavior
Maybe more "desirable" would be a WebSocketServer that stays up, no matter which exceptions are thrown in the "onOpen" and "onError" method implementations.

Environment(please complete the following information):

• Version used: Java-WebSocket-1.6.0.jar
• Java version: oracle jdk21
• Operating System and version: Debian Linux 12.11
• Link to your project: https://github.com/proxy/gist.github.com/cvilsmeier/de7d1f3419f421de132b1acf16e7b04f

Thank you
for your websocket library.