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/*

* Copyright (c) 2010-2020 Nathan Rajlich

*

* Permission is hereby granted, free of charge, to any person

* obtaining a copy of this software and associated documentation

* files (the "Software"), to deal in the Software without

* restriction, including without limitation the rights to use,

* copy, modify, merge, publish, distribute, sublicense, and/or sell

* copies of the Software, and to permit persons to whom the

* Software is furnished to do so, subject to the following

* conditions:

*

* The above copyright notice and this permission notice shall be

* included in all copies or substantial portions of the Software.

*

* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

* OTHER DEALINGS IN THE SOFTWARE.

*/

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.net.InetSocketAddress;

import java.net.UnknownHostException;

import java.nio.ByteBuffer;

import java.util.Collections;

import org.java_websocket.WebSocket;

import org.java_websocket.drafts.Draft;

import org.java_websocket.drafts.Draft_6455;

import org.java_websocket.handshake.ClientHandshake;

import org.java_websocket.server.WebSocketServer;

/**

* A simple WebSocketServer implementation. Keeps track of a "chatroom".

*/

public class ChatServer extends WebSocketServer {

public ChatServer(int port) throws UnknownHostException {

super(new InetSocketAddress(port));

}

public ChatServer(InetSocketAddress address) {

super(address);

}

public ChatServer(int port, Draft_6455 draft) {

super(new InetSocketAddress(port), Collections.<Draft>singletonList(draft));

}

@Override

public void onOpen(WebSocket conn, ClientHandshake handshake) {

conn.send("Welcome to the server!"); //This method sends a message to the new client

broadcast("new connection: " + handshake

.getResourceDescriptor()); //This method sends a message to all clients connected

System.out.println(

conn.getRemoteSocketAddress().getAddress().getHostAddress() + " entered the room!");

}

@Override

public void onClose(WebSocket conn, int code, String reason, boolean remote) {

broadcast(conn + " has left the room!");

System.out.println(conn + " has left the room!");

}

@Override

public void onMessage(WebSocket conn, String message) {

broadcast(message);

System.out.println(conn + ": " + message);

}

@Override

public void onMessage(WebSocket conn, ByteBuffer message) {

broadcast(message.array());

System.out.println(conn + ": " + message);

}

public static void main(String[] args) throws InterruptedException, IOException {

int port = 8887; // 843 flash policy port

try {

port = Integer.parseInt(args[0]);

} catch (Exception ex) {

}

ChatServer s = new ChatServer(port);

s.start();

System.out.println("ChatServer started on port: " + s.getPort());

BufferedReader sysin = new BufferedReader(new InputStreamReader(System.in));

while (true) {

String in = sysin.readLine();

s.broadcast(in);

if (in.equals("exit")) {

s.stop(1000);

break;

}

}

}

@Override

public void onError(WebSocket conn, Exception ex) {

ex.printStackTrace();

if (conn != null) {

// some errors like port binding failed may not be assignable to a specific websocket

}

}

@Override

public void onStart() {

System.out.println("Server started!");

setConnectionLostTimeout(0);

setConnectionLostTimeout(100);

}

}