/*
* 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.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);
}
}