Add WebSockets example

[jaguililla]

I.e.: https://javalin.io/tutorials/websocket-example

[abhishekabk5]

Hi, I would like to contribute here,
In what way should I add the example? as a ReadMe file or a Template or something else?

[jaguililla]

Hello, and thanks for collaborating with this project! I've just created a repository to contain the example, you can fork it, implement the example, and file the PR there, this is the URL: https://github.com/hexagonkt/websockets_chat

Please note that web sockets is not the best tested part of the toolkit, if you find any problem, please tell me (or even better, file a bug 😉).

Thanks again and... Happy coding!

[abhishekabk5]

hexagontk/websockets_chat#1

[abhishekabk5]

Facing an issue here, not sure why

As per postman docs, the response code should be 101 (switching protocols) and not 202 (accepted), and i believe that's why connection is not being established. But I don't have much experience in WebSockets
Ref - https://youtu.be/H-7EZVj9D-k

[jaguililla]

Right now I'm not at home. Let me get back to you regarding this issue after Sunday 30th :)

However, please use the http_server_netty adapter (changing the dependency in the gradle.build.kts file) as the Jetty adapter don't support WS yet.

I'll create a different task to explicitly fail when you try to use a feature not supported by the chosen adapter, but right now it fails silently :(

[abhishekabk5]

Ok, got it. i'll try with that and let you know the progress

[abhishekabk5]

Great, it's working fine now. Now, to make a sample webpage for this.

[abhishekabk5]

I have added the sample page as well. Complete task PR: hexagontk/websockets_chat#1