//SingleSocketServer: A Server which SERVES One Socket at a Time
// Runs on local IP address 10.64.18.11


import java.net.*;
import java.io.*;
import java.util.*;

public class TCP_Echo_Server {

 static ServerSocket servSock;
 protected final static int port = 1024 + 7;
 static Socket clientSock;

 //static boolean first;
 //static StringBuffer process;

 public static void main(String[] args) {
    try{
      servSock = new ServerSocket(port);
      System.out.println("Single SocketServer Initialized");

      int character;

	  while (true) {
        clientSock = servSock.accept();

        BufferedInputStream is = new BufferedInputStream(clientSock.getInputStream());
        InputStreamReader isr = new InputStreamReader(is);

        String process = "";
        while((character = isr.read()) != 13) {
          process = process + (char)character;
        }

        System.out.println("Received from Client: " + process);

        String returnCode = "Echo server repsonded: " + process +(char) 13;

        BufferedOutputStream os = new BufferedOutputStream(clientSock.getOutputStream());
        OutputStreamWriter osw = new OutputStreamWriter(os, "US-ASCII");
        osw.write(returnCode);
        osw.flush();
     }
    }
    catch (IOException e) { e.printStackTrace();}
      try {

        clientSock.close();
      }
      catch (IOException e) {}
  }
}