package chat;
/*
* Code taken from http://introcs.cs.princeton.edu/java/84network/
*/
import java.net.Socket;
public class Connection extends Thread {
private Socket socket;
private Out out;
private In in;
private String message; // one line buffer
public Connection(Socket socket) {
in = new In(socket);
out = new Out(socket);
this.socket = socket;
}
public void println(String s) { out.println(s); }
public void run() {
String s;
while ((s = in.readLine()) != null) {
setMessage(s);
}
out.close();
in.close();
try { socket.close(); }
catch (Exception e) { e.printStackTrace(); }
System.err.println("closing socket");
}
/*********************************************************************
* The methods getMessage() and setMessage() are synchronized
* so that the thread in Connection doesn't call setMessage()
* while the ConnectionListener thread is calling getMessage().
*********************************************************************/
public synchronized String getMessage() {
if (message == null) return null;
String temp = message;
message = null;
notifyAll();
return temp;
}
public synchronized void setMessage(String s) {
if (message != null) {
try { wait(); }
catch (Exception ex) { ex.printStackTrace(); }
}
message = s;
}
}