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

public class AtmoBaseApplet extends Applet {

  /**
   * This is a basic method with we call with our
   * Javascript.
   */
  public String runFetchData() {
    return "Applet: runFetchData() has been called";
  }

  /**
   * This method tests the AtmoServerApp component. Sends
   * a message to the server and gets the response.
   */
  public String runFetchNetworkData() {
    return "Applet: "+writeAndReply("TestAgent".getBytes());
  }

  /**
   * Takes care of networking component
   */
  private String writeAndReply(byte[] write) {
    URLConnection conn =null;
    try {
      // The "host" can be any address of any machine you've started your
      // server on, except for "localhost". If you start it on your local
      // machine, you'll find an applet security exception will arise when you
      // attempt to connect.
      URL url = new URL("http://"+getCodeBase().getHost()+":5481");
      byte[] bytes = new byte[100000];
      OutputStream os = null;
      InputStream is = null;
      int read = 0;
      String s = null;

      conn = url.openConnection();
      conn.setDoOutput(true);
      os = conn.getOutputStream();
      os.write(write);
      os.flush();
      conn.connect();
      is = conn.getInputStream();
      read = is.read( bytes );
      s = new String( bytes, 0, read );
      return s;
    } catch (Exception e) {
      // Exception message is returned if something goes wrong...
      StringWriter sw = new StringWriter();
      PrintWriter pw = new PrintWriter(sw);
      e.printStackTrace(pw);
//      return sw.toString();
      return "Error - "+e.getMessage();
    }
  }
}