Reading From Socket

[passer-by]

Hello!
Now I am trying to make a simple server that will read data from the client.
Client is a device that tries to establish a connection to the server by sending it <INI> string. If there is no answear from the server device will send <INI> string back in 5 minutes.
Here is my code:

import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;

public class ServerSide {
    private static final int PORT = 28001;
    
    public static void main(String[] args){
        try{
            ServerSocket server = new ServerSocket(PORT);            //Server listens to port # 28001
            Socket clientSocket = server.accept();
            
            String inputLine;
            BufferedReader in = new BufferedReader(new             InputStreamReader(clientSocket.getInputStream()));
            while (true){
                inputLine = in.readLine();
                System.out.println(inputLine);
                if(inputLine == null) break;
            }
            in.close();
            clientSocket.close();
        }catch (IOException ex){}
}

As I expect this program has to print <INI> every time device tries to establish a connection. But in fact it only prints <INI> one time!

Why other <INI> - s are not printed? What is wrong with the way I read data from the socket?

[Norm]

program has to print <INI> every time device tries to establish a connection.

The code you've posted only has one accept for one connection. The next time the client tries to make a connection, the server is not listening for a new connect.
Put the accept in a loop. When there is a connection, create a new thread to handle each incoming connect separately.

[passer-by]

Thanks a lot! I forgot about it.

[kjkrum]

Also, when the client disconnects, the InputStream will treat it as end-of-file and readLine() will return null. You don't really need to put that in a loop if the client is only sending one line, because readLine() will not return until it reads a line. (Unless you've set a socket timeout.)