Is there a way to make an event handler to watch for inbound socket action?

Question

So I have a program that I've put on hold till spring break: Its a simple TCP/IP chat program for MUDs or IRC servers. Now its time to get this monkey running.
Right now I have a problem where it locks up after initiating the connection to release after the server disconnects on it's side. I've tried futzing with threads but that was too complicated for this problem. If I could just have it act like an event where it spits out the info received from the IRC/MUD server, that would be ideal.
Any suggestions?
PS: In the past I tried posting my code but no one here seemed to understand what I was trying to do.
CodeDragon

Answer 1

There's nothing built-in to do what you want. I looked at the code from your old posting and I see two potential problems with yoru read code.
1. I'm not sure why are you using the "in.reset()"... I doubt that's the cause, but I don't think you need it.
2. I think your loop is incorrect. Your loop will keep reading until the Reader hits the EOF--which is a server disconnect in this case.
What you want is something like:
boolean eof = false;
while(in.ready() && !eof) {
   String line = in.readLine();
   if(line!=null) {
      scroll.append(line);
      scroll.append('\n');
   } else {
      eof = true;
}If you wanted to make this asynchronous, use your old loop, but push the lines out to a queue of some sort...somethign like:
java.util.BlockingQueue <String>queue = new BlockingQueue<String>();
Runnable r = new Runnable() {
public void run() {
   String line = null;
   while( (line = in.readLine()) != null) {
     queue.put(line);
   queue.put(null); //tells your loop to abort
Thread t = new Thread(r);
t.start();
String line = null;
while( (line = queue.take()) !=null) {
   System.out.println(line);
}Edited by: James_Schek on Mar 20, 2008 4:50 PM