aslakhellesoy/Main.java

## chatroom.css
body {
    font-family: arial, sans-serif;
    padding: 10px;
}

#chatlog, #entry {
    width: 100%;
    border: solid 4px #000000;
    font-weight: bold;
    font-family: monospace;
    font-size: 30px;
}

## chatroom.js
window.onload = function() {
    var ws = new WebSocket('ws://' + document.location.host + '/chat');

    ws.onmessage = function(e) {
        var chatlog = document.getElementById('chatlog');
        chatlog.value += e.data + '\n';
    };

    function send(text) {
        ws.send(text);
    }

    var entry = document.getElementById('entry');
    entry.onkeypress = function(e) {
        if(entry.value && e.keyCode == 13) {
            send(entry.value);
            entry.value = '';
        }
    };
};

## index.html
<!DOCTYPE html>
<html>
    <head>
        <title>Chat room</title>
        <link rel="stylesheet" type="text/css" href="chatroom.css">
        <script type="text/javascript" src="chatroom.js"></script>
    </head>
    <body>
        <textarea id="chatlog" rows="5"></textarea>
        <input type="text" id="entry">
    </body>
</html>

## Main.java
package yow.webbit.chat;

import org.webbitserver.*;
import org.webbitserver.handler.StaticFileHandler;
import org.webbitserver.handler.logging.LoggingHandler;
import org.webbitserver.handler.logging.SimpleLogSink;
import org.webbitserver.netty.NettyWebServer;

import java.io.IOException;
import java.util.HashSet;
import java.util.Set;

public class Main {
    public static void main(String[] args) throws IOException {
        WebServer server = new NettyWebServer(8080);
        server.add(new LoggingHandler(new SimpleLogSink()));
        server.add(new StaticFileHandler("src/main/resources/web"));
        server.add("/chat", new WebSocketHandler() {
            public Set<WebSocketConnection> connections = new HashSet<WebSocketConnection>();

            public void onOpen(WebSocketConnection connection) throws Exception {
                connections.add(connection);
            }

            public void onClose(WebSocketConnection connection) throws Exception {
                connections.remove(connection);
            }

            public void onMessage(WebSocketConnection connection, String msg) throws Throwable {
                for (WebSocketConnection ws : connections) {
                    ws.send(msg);
                }
            }

            public void onMessage(WebSocketConnection connection, byte[] msg) throws Throwable {
                throw new UnsupportedOperationException();
            }

            public void onPong(WebSocketConnection connection, String msg) throws Throwable {
                throw new UnsupportedOperationException();
            }
        });

        server.start();
    }
}
	body {
	font-family: arial, sans-serif;
	padding: 10px;
	}

	#chatlog, #entry {
	width: 100%;
	border: solid 4px #000000;
	font-weight: bold;
	font-family: monospace;
	font-size: 30px;
	}
	window.onload = function() {
	var ws = new WebSocket('ws://' + document.location.host + '/chat');

	ws.onmessage = function(e) {
	var chatlog = document.getElementById('chatlog');
	chatlog.value += e.data + '\n';
	};

	function send(text) {
	ws.send(text);
	}

	var entry = document.getElementById('entry');
	entry.onkeypress = function(e) {
	if(entry.value && e.keyCode == 13) {
	send(entry.value);
	entry.value = '';
	}
	};
	};
	<!DOCTYPE html>
	<html>
	<head>
	<title>Chat room</title>
	<link rel="stylesheet" type="text/css" href="chatroom.css">
	<script type="text/javascript" src="chatroom.js"></script>
	</head>
	<body>
	<textarea id="chatlog" rows="5"></textarea>
	<input type="text" id="entry">
	</body>
	</html>
	package yow.webbit.chat;

	import org.webbitserver.*;
	import org.webbitserver.handler.StaticFileHandler;
	import org.webbitserver.handler.logging.LoggingHandler;
	import org.webbitserver.handler.logging.SimpleLogSink;
	import org.webbitserver.netty.NettyWebServer;

	import java.io.IOException;
	import java.util.HashSet;
	import java.util.Set;

	public class Main {
	public static void main(String[] args) throws IOException {
	WebServer server = new NettyWebServer(8080);
	server.add(new LoggingHandler(new SimpleLogSink()));
	server.add(new StaticFileHandler("src/main/resources/web"));
	server.add("/chat", new WebSocketHandler() {
	public Set<WebSocketConnection> connections = new HashSet<WebSocketConnection>();

	public void onOpen(WebSocketConnection connection) throws Exception {
	connections.add(connection);
	}

	public void onClose(WebSocketConnection connection) throws Exception {
	connections.remove(connection);
	}

	public void onMessage(WebSocketConnection connection, String msg) throws Throwable {
	for (WebSocketConnection ws : connections) {
	ws.send(msg);
	}
	}

	public void onMessage(WebSocketConnection connection, byte[] msg) throws Throwable {
	throw new UnsupportedOperationException();
	}

	public void onPong(WebSocketConnection connection, String msg) throws Throwable {
	throw new UnsupportedOperationException();
	}
	});

	server.start();
	}
	}