//File:         ABWPlot.java
//Project:      ABMT
//Version:      0.1
//Designer:     C. Edward Chow
//Revision:
//              2/14/2001  C. Edward Chow
//Bug Report:   send to chow@cs.uccs.edu
//Description:  Plotting Program  for Internet Network Probing Research
//              Main class of ABWPlot
//
//  copyright@2001, University of Colorado at Coloraod Springs
//              unlimited distribution for academic research and education
//              for commercial usage, please check with C. Edward Chow
//

import javax.swing.UIManager;
import java.awt.*;
import java.net.*;
import java.io.*;


public class ABWPlot {
  boolean packFrame = false;
  private DatagramSocket socket;
  private DatagramPacket receivePacket;
  private double time1;
  private boolean first;

  //Construct the application
  PlotProbingResults frame;

  public ABWPlot() {
    frame = new PlotProbingResults(0, 1E7, 0.1, 10);
    first = true;
    //Validate frames that have preset sizes
    //Pack frames that have useful preferred size info, e.g. from their layout
    if (packFrame)
      frame.pack();
    else
      frame.validate();
    //Center the window
    //Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
    //Dimension frameSize = frame.getSize();
    //if (frameSize.height > screenSize.height)
    //  frameSize.height = screenSize.height;
    //if (frameSize.width > screenSize.width)
    //  frameSize.width = screenSize.width;
    frame.setLocation(0,0);
    frame.setSize(680,700);
    frame.setVisible(true);

    try {
      socket = new DatagramSocket(9001);
    } catch (SocketException se) {
      se.printStackTrace();
      System.exit(1);
    }
    System.out.println("socket created on port 9001");
  }
  public double byte2double(byte[] r, int i, int length) {
    double d = 0.0;
    for (int j=i+length-1; j>=i; j--) {
       d *= 256;
       if (r[j] < 0) { d += r[j] + 256; }
       else { d += r[j]; }
    }
    return d;
  }
  public void waitForPackets() {
    double relativeTime;
    while (true) {
      // set up packet
      byte data[] = new byte[20];
      receivePacket = new DatagramPacket(data, data.length);

      // wait for packet
      try {
        socket.receive(receivePacket);
      } catch (IOException io) {
        io.printStackTrace();
        System.exit(1);
      }
      System.out.println("receive datagram");
      byte[] r = receivePacket.getData();
      for (int i = 0; i< 16; i++) {
         System.out.println("r["+i+"]="+r[i]);
      }
      int id = r[0];     // assume little endien
      // double time = (((r[7]*256+r[6])*256)+r[5])*256+r[4]+0.0;
      double time = byte2double(r, 4, 4);
      // time += ((((r[11]*256+r[10])*256)+r[9])*256+r[8])*0.000001;
      time += byte2double(r, 8, 4)*0.000001;
      if (first) {
        time1= time;
        relativeTime = 0.0;
        first = false;
      } else {
        if (time1 > time) {
          time1 = time;
          relativeTime = 0.0;
        } else {
          relativeTime = time - time1;  //get relative time
        }
      }
      //double bw =  (((r[15]*256+r[14])*256)+r[13])*256+r[12] +0.0;
      double bw = byte2double(r, 12, 4);
      System.out.println("id="+id+" time="+time+" relativeTime="+relativeTime+" bw="+bw);
      if (id == 1) {
        frame.c1.updateProbingData(relativeTime, bw);
      }
      if (id == 0) {
        frame.c1.updateABW(relativeTime, bw);
      }       
    }
  }
//Main method
  
  public static void main(String[] args) {
    try  {
      //UIManager.setLookAndFeel(new com.sun.java.swing.plaf.windows.WindowsLookAndFeel());
      //UIManager.setLookAndFeel(new com.sun.java.swing.plaf.motif.MotifLookAndFeel());
      //UIManager.setLookAndFeel(new com.sun.java.swing.plaf.metal.MetalLookAndFeel());
    }
    catch (Exception e) {
    }
    ABWPlot n = new ABWPlot();
    n.waitForPackets();
    /*
    int j=0;
    for (int i=0; i<1000000; i++) {
       n.frame.c1.updateProbingData(i, 1000000*Math.sin(i/10)+5000000);
       for (int k=0; k<100000; k++) { j++;};
       n.frame.c1.updateABW(i, 1000000*Math.cos(0.1*i)+5000000);
       for (int k=0; k<100000; k++) { j++;};
       n.frame.c1.updateABW2(i, 1000000*Math.cos(0.1*i)+4000000+1000000*Math.sin(0.1*i));
       if (i%100 == 99) {
          n.frame.c1.redisplayPlot(0, 1E7, i-50, 5);
       }
    }
    */
  }
}