mutiple socket connection issue

[kinson joy]

Hi I have server code:

public class KKMultiServer {
    public static void main(String[] args) throws IOException {

        ServerSocket serverSocket = null;
        boolean listening = true;
        try {
            serverSocket = new ServerSocket(15112);
        } catch (IOException e) {
            System.err.println("Could not listen on port: 15112.");
            System.exit(-1);
        }
        while (true)
	    new KKMultiServerThread(serverSocket.accept()).start();
        serverSocket.close();
}

public class KKMultiServerThread extends Thread {
    private Socket socket = null;
    private static volatile boolean running = true;
 	private PrintWriter outStream = null;
	private BufferedReader inStream = null;
   
    public KKMultiServerThread(Socket socket) {
    	super("KKMultiServerThread");
    	this.socket = socket;
		try {
				outStream = new PrintWriter(socket.getOutputStream(), true);
				inStream = new BufferedReader(new InputStreamReader(socket.getInputStream()));
			} catch (IOException e) {}
    }

    public void run() {
    	try {
    		while (running) {
	            	String str = inStream.readLine();
	            	if(str == null) {
	            		running = false;	break;
	            	}
    		}
	    } catch (Exception e) {
	            	close();
	                 return;
	    } finally {
	    	try {
				outStream.close();
				inStream.close();
				socket.close();
	    	} catch (IOException e) { e.printStackTrace(); }    	
	    }
   }
    
    private void close() {
     	running = false;
 		try {
 			
			outStream.close();
			inStream.close();
			socket.close();
		} catch (IOException e) { e.printStackTrace(); }
		
    }
    

And client socket is connected to server and loop to send message to server, at end of each loop to close socket:

Socket kkSocket = null;
 PrintWriter out = null;
 BufferedReader in = null;
for(int i=0; i < 3; i++) {
			        try {
			            kkSocket = new Socket("localhost", 15112);
			            out = new PrintWriter(kkSocket.getOutputStream(), true);
			            in = new BufferedReader(new InputStreamReader(kkSocket.getInputStream()));
			        } catch (Exception e) {}
			        out.println("BRAKE,BUS518-three-001,,20090410194153,37.380928N,121.895187W,274.27,2.9,00000000,000012");
			        out.close();
			        in.close();
			        kkSocket.close();
        }   

The problem is server can only receive message at first loop, then it cannot get any message after other ones.


At the server side, if we don't set running as false when capture socket close ( which mean keep first thread alive), then work fine, at this case, server will increase number of thread if there are a lot of client to connect? how to solve this issue?

Thanks,

Kinson