Thread: Socket Programming Problem

hi all,
i am trying o study socket programming in java and trying to create a simple chat program, i found this code on a tutorial on web and tried playing with it, the problem is it seems it cant connect to the server.

this is my code for the server side:

import java.io.*;
import java.net.*;
 
 
public class ServerSide{
    public static void main(String[] args)throws Exception {
        BufferedReader In = new BufferedReader(new InputStreamReader(System.in));
        String data = In.readLine();
 
         ServerSocket srvr = new ServerSocket(8000);
         Socket skt = srvr.accept();
         System.out.print("Server has connected!\n");
         PrintWriter out = new PrintWriter(skt.getOutputStream(), true);
         System.out.print("Sending string: '" + data + "'\n");
         out.print(data);
         out.close();
         skt.close();
         srvr.close();
 
    }
}

and this is my code for the client side:

import java.io.*;
import java.net.*;
 
 
public class ClientSide{
    public static void main(String[] args)throws Exception {
         Socket skt = new Socket("192.168.5.236", 8000);
         BufferedReader in = new BufferedReader(new
            InputStreamReader(skt.getInputStream()));
         System.out.print("Received string: '");
 
         while (!in.ready()) {}
         System.out.println(in.readLine()); // Read one line and output it
 
         System.out.print("'\n");
         in.close();
    }
}

this is the error when i try to run the client side.

D:\Sockets Test>java ClientSide
Exception in thread "main" java.net.ConnectException: Connection refused: connec
t
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(Unknown Source)
at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at ClientSide.main(ClientSide.java:8)


anyone can help me where i am wrong on this?. thanks.

Are your client and server both on localhost, or different machines?

Originally Posted by copeg

Are your client and server both on localhost, or different machines?

for now im trying to run it on localhost, then if i get it to work im gonna run it on a remote machine, 192.168.5.236 is the localhost's IP, i tried changing that lo "localhost" still doesnt work.

You need to port-forward the port you're using for the server.

hmm.. do i have to forward the port even im just running it on local machine?

No. use "localhost" as the IP. you were using the ip "192.168.5.236" Which is your network IP giving to you by your router. network/private and public IPs need a portforward.

i already got it.. hehehehehe... thanks anyways..

What did you change?