import java.io.IOException;
import java.io.PrintWriter;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.Socket;

public class DateClient {

    public static void main(String[] args) throws IOException {
        String serverIP = "cs117.cs.gettysburg.edu";
        int    portNo   = 8888;
        String clientName = "Linus";

        // 0. choice of different server/portNo
        if (args.length > 0) {
            serverIP = args[0];
        }

        if (args.length > 1) {
            portNo = Integer.parseInt(args[1]);
        }

        System.out.print("Connecting to " + serverIP + " ... ");

        // 1. connect to the server
        Socket clientSocket = new Socket(serverIP, portNo);
        System.out.println(" successful!");

        // 2. setup communication channels
        PrintWriter    toServer   = new PrintWriter(clientSocket.getOutputStream());

        // InputStream IS-NOT-An InputStreamReader, must wrap around 
        BufferedReader fromServer = 
            new BufferedReader(
                new InputStreamReader(
                    clientSocket.getInputStream()));

        // 2.5 send client's name
        toServer.println(clientName);
        toServer.flush(); // force-send

        // 3. receive message from the server and print it to the screen
        String line = fromServer.readLine();

        System.out.println(line);

        // 4. close connection
        fromServer.close();
        toServer.close();

    }
}