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

//JZip Client

public class NetZip {
    //Declaring private variables.
    private Socket socket = null;
    private File file = null;


    public static void main(String[] args) {
    try {
        File file = new File(args[0]);
        File newFile = new File(args[0]+".gz");
        }
    catch (ArrayIndexOutOfBoundsException error) {
        System.out.println("Please Enter a Filename!");
    }
    }

    public void toServer() throws IOException{
    //Creating socket
       socket = new Socket("localhost", 9999);

       //Creating stream to read from file.
       DataInputStream fileIn = new DataInputStream(
           new BufferedInputStream(
               new FileInputStream(
                   file)));

       //Creating stream to write to socket.
       DataOutputStream dataOut = new DataOutputStream(
           new BufferedOutputStream(
               socket.getOutputStream()));


       byte[] buffer = new byte[1024];

           int len;
           //While there is data to be read, write to socket.
        while((len = fileIn.read(buffer)) != -1){
            System.out.println("Attempting to Write " + file
                + "to server.");
            dataOut.write(buffer, 0, len);
           }
        }
  //Read data from the serversocket, and write to new .gz file.
    public void fromServer() throws IOException{
    DataInputStream dataIn = new DataInputStream(
           new BufferedInputStream(
                   socket.getInputStream()));

    byte[] buffer = new byte[1024];

        int len;
        while((len = dataIn.read(buffer)) != -1){
            // ???
        }
    }
}

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

//JZip Server

public class ZipServer {

    private ServerSocket serverSock = null;
    private Socket socket = null;

    public ZipServer() throws IOException {
    //Creating server socket, and accepting from other sockets.
    try{
    serverSock = new ServerSocket(9999);
    Socket socket = serverSock.accept();
    }
    catch(IOException error){
        System.out.println("Error! Cannot create socket on port");
    }

    //Reading Data from socket
    DataInputStream dataIn = new DataInputStream(
           new BufferedInputStream(
                   socket.getInputStream()));

    //Creating output stream.
    DataOutputStream zipOut= new DataOutputStream(new GZIPOutputStream(
            new BufferedOutputStream(
                socket.getOutputStream())));

    byte[] buffer = new byte[1024];

        int len;
        //While there is data to be read, write to socket.
        while((len = dataIn.read(buffer)) != -1){
            System.out.println("Attempting to Compress " + dataIn
                + "and send to client");
            zipOut.write(buffer, 0, len);

        }
    dataIn.close();
    zipOut.flush();
    zipOut.close();

    }

    public static void main(String[] args) throws IOException{
    ZipServer run = new ZipServer();
    }

}