MoogleGunner wrote:
For a project I am working on, I am trying to learn internet
networking, unfortunatly, its proving to be nothing less than a huge
amount of confusion, and I think I just don't have enouh basic
knowledge to actually understand whats causing errors. I am trying the
Custom Networking trail from the Java Tutorials, but none of their
example programs actually work for me. For example, I had begun trying
to get their EchoClient program to run, using the latest NetBeans.
Unfortunatly, I cannot actually get it to work on any computer I know,
my own computer, and my fathers blcok the connection, nad others that I
know via the internet time out.
Thus, I have to conclude that the official tutoriiual just doesn't
contain enough information to help me. Does anyone have any suggestions
or links to better places ot learn htese things, or even books?
Thanks.
Looking at EchoClient, it wouldn't work for anyone right off the bat,
but the easiest way to get it working is to replace "taranis" with, say
"127.0.0.1" or "localhost" (this basically connects to yourself).
You'll also need to run this code (say in a seperate prompt):
import java.io.*;
import java.net.*;
public class EchoServer {
public static void main(String[] args) throws Exception {
ServerSocket ss = new ServerSocket(7);
Socket s = ss.accept();
InputStream is = s.getInputStream();
int x;
while ((x = is.read()) != -1) {s.getOutputStream().write(x);}
s.close(); ss.close();
}
}
What this does is run an echo server on your computer, and 127.0.0.1 is
the loopback address i.e. the message never leaves your computer, so
you could do this on any unconnected computer. Of course, if you're
running on *nix, you'd need root priveleges to run a server on ports
1-1023, so I'd use 1024+7 = 1031 instead.
Thanks for this, it was what I needed. It taught me enough to get my