import java.io.*;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class KazMuzikServlet extends HttpServlet {
  private static final String filename = "kazmuzik.mp3";

  public void doGet(HttpServletRequest req, HttpServletResponse res)
      throws IOException, ServletException {

    File file = new File(filename);
    int len = (int)file.length();

    res.setContentType("audio/mpeg");
    res.setHeader("Content-Length", "" + len);
    res.setHeader("Content-Disposition",
                  "attachment; filename=\"" + filename + "\"");

    InputStream in = new BufferedInputStream(new FileInputStream(file));
    OutputStream out = new BufferedOutputStream(res.getOutputStream());
    byte[] b = new byte[len];
    int n = 0;
    while (true) {
      int m = in.read(b, n, len-n);
      out.write(b, n, m);
      n += m;
      if (n == len) {
        break;
      }
    }
    in.close();
    out.flush();
    out.close();
    return;
  }

  public void doPost(HttpServletRequest req, HttpServletResponse res)
      throws IOException, ServletException {
    doGet(req, res);
  }
}