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ChatServer.java
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/*
* Copyright (c) 2010-2019 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 org.java_websocket.WebSocket;
import org.java_websocket.WebSocketImpl;
import org.java_websocket.framing.Framedata;
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 );
}
@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);
}
}