gistfile1.java

import java.io.BufferedOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;

public class Server {

    public static void main(String[] args) throws IOException {
        ServerSocket server = null;
        try {
            server = new ServerSocket(9090);
        } catch (IOException e) {
            System.out.println(e);
        }
        
         Socket clientSocket = server.accept();
         DataInputStream is = new DataInputStream(clientSocket.getInputStream());
         DataOutputStream os = new  DataOutputStream(clientSocket.getOutputStream());

           while (true) {
               if( is.available() > 0 ){
                   if(is.readBoolean() == true){
                      //TODO: read a random line from a file and write from Response
                       os.writeUTF("Response");
                   
                   }else{
                       //it's file
                       byte[] mybytearray = new byte[10024];
                       FileOutputStream fos = new FileOutputStream("/Users/amir/Desktoptest.txt");
                       BufferedOutputStream bos = new BufferedOutputStream(fos);
                       int bytesRead = is.read(mybytearray, 0, mybytearray.length);
                       bos.write(mybytearray, 0, bytesRead);
                       bos.close();
                   }
               }
              
           }
    }
}