import java.io.*;

import java.net.*;

public class ChatServer {

public static void main(String[] args) {

try (ServerSocket serverSocket = new ServerSocket(12345)) {

System.out.println("Saiganesh is waiting for Shyam...");

Socket socket = serverSocket.accept();

System.out.println("Shyam connected!");

BufferedReader input = new BufferedReader(new InputStreamReader(socket.getInputStream()));

PrintWriter output = new PrintWriter(socket.getOutputStream(), true);

BufferedReader console = new BufferedReader(new InputStreamReader(System.in));

String message = input.readLine();

System.out.println("Shyam: " + message);

if ("Hi Saiganesh!".equalsIgnoreCase(message)) {

output.println("Yes, Sairam Shyam! Yela Unnavu?");

}

while (true) {

message = input.readLine();

if (message.equalsIgnoreCase("exit")) break;

System.out.println("Shyam: " + message);

System.out.print("Saiganesh: ");

message = console.readLine();

output.println(message);

}

socket.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}