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99 lines (88 loc) · 2.73 KB
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import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.InetSocketAddress;
import java.net.UnknownHostException;
import java.util.Collection;
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 ) {
this.sendToAll( "new connection: " + handshake.getResourceDescriptor() );
System.out.println( conn.getRemoteSocketAddress().getAddress().getHostAddress() + " entered the room!" );
}
@Override
public void onClose( WebSocket conn, int code, String reason, boolean remote ) {
this.sendToAll( conn + " has left the room!" );
System.out.println( conn + " has left the room!" );
}
@Override
public void onMessage( WebSocket conn, String message ) {
this.sendToAll( message );
System.out.println( conn + ": " + message );
}
@Override
public void onFragment( WebSocket conn, Framedata fragment ) {
System.out.println( "received fragment: " + fragment );
}
public static void main( String[] args ) throws InterruptedException , IOException {
WebSocketImpl.DEBUG = true;
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.sendToAll( in );
if( in.equals( "exit" ) ) {
s.stop();
break;
} else if( in.equals( "restart" ) ) {
s.stop();
s.start();
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
}
}
/**
* Sends <var>text</var> to all currently connected WebSocket clients.
*
* @param text
* The String to send across the network.
* @throws InterruptedException
* When socket related I/O errors occur.
*/
public void sendToAll( String text ) {
Collection<WebSocket> con = connections();
synchronized ( con ) {
for( WebSocket c : con ) {
c.send( text );
}
}
}
}