网络编程

开发平台：

Java

ARPdump.java：源码内容

							package bysj;
import jpcap.*;
import java.net.*;
public class ARPdump implements JpcapHandler
{
    public void handlePacket(Packet packet){
      Packet p = packet;
      try {
        if (p instanceof ARPPacket) {
          ARPPacket arpp = (ARPPacket) p;
          System.out.println(arpp.hardtype);
          System.out.println(arpp.prototype);
          System.out.println(arpp.hlen);
          System.out.println(arpp.plen);
          System.out.println(arpp.operation);
          System.out.println("ARP packet From:" + arpp.getSenderHardwareAddress());
          System.out.println("ARP packet To:" + arpp.getTargetHardwareAddress());
          System.out.println("From:" + arpp.getSenderProtocolAddress());
          System.out.println("To:" + arpp.getTargetProtocolAddress());
          //System.out.println(p.toString());
        }
      }
      catch (Exception e) {
        e.printStackTrace();
      }
    }
      public static void main(String[] args) throws java.io.IOException {
        String[] devices = Jpcap.getDeviceList();
        System.out.println("Start capturing on " + devices[0]);
        String deviceName = devices[0];
        Jpcap jpcap = Jpcap.openDevice(deviceName, 1000, false, 20);
        jpcap.loopPacket( -1, new ARPdump());
      }
  }

						