客户端程序在java中读取文件非常慢

Question

import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.*;
public class Client {

    public static void main (String [] args ) throws IOException {
        int filesize=2022386;
        int bytesRead;
        int currentTot = 0;

        Socket socket = new Socket("192.168.1.6",15123);
        byte [] bytearray  = new byte [filesize];
        InputStream is = socket.getInputStream();
        FileOutputStream fos = new FileOutputStream("d:\\copy.rar");
        BufferedOutputStream bos = new BufferedOutputStream(fos);
        bytesRead = is.read(bytearray,0,bytearray.length);
        currentTot = bytesRead;

        do {
           bytesRead =
              is.read(bytearray, currentTot, (bytearray.length-currentTot));
           if(bytesRead >= 0) currentTot += bytesRead;
        } while(bytesRead > -1);

        bos.write(bytearray, 0 , currentTot);
        bos.flush();
        bos.close();
        socket.close();
      }
}

上面是我的客户端代码，它以非常缓慢的方式从服务器读取数据你能否建议我提高传输速度。我可以使用这段代码阅读视频文件，如果不建议这样做的话。