jpcaptip.java

关于JAVAjpcap的源程序的一部分ConnServer.java

import java.io.*;
import jpcap.*;
import jpcap.packet.*;
import java.util.*;
import java.text.*;

public class JpcapTip implements PacketReceiver{
      static int j=0;
      static long p=0,q=0;
      IPPacket ip;
      String s,s1;
      Long s2;
      
   
      public void receivePacket(Packet packet){ 
          if(packet instanceof IPPacket)
          { 
              System.out.println("ok");
              ip=(IPPacket)packet;
              long time11=System.currentTimeMillis();

            	                 try {
     	      RandomAccessFile rf = new RandomAccessFile("packet.txt", "rw");
                      rf.seek(rf.length());
                      rf.writeBytes(ip.src_ip+"\t"+ip.dst_ip+"\t"+ip.protocol+"\t"+
                      ip.length+"\t"+ip.version+"\t"+ip.ident+"\t"+
                      ip.rsv_frag+"\t"+ip.offset+"\t"+ip.hop_limit+"\t"+
                      ip.rsv_tos+"\r\n");
                      rf.close();
                 }
                 catch (Exception e) {
                      e.printStackTrace();
                 }

              long time12=System.currentTimeMillis();
              System.out.println(""+time12+"-"+time11+"="+(time12-time11)+"\ncapture count:"+j);
          }
                   
      }

      
      
      public static void main(String[] args) throws java.io.IOException
      {
    	  NetworkInterface[] devices =  JpcapCaptor.getDeviceList();
    	  NetworkInterface deviceName = devices[1];
          JpcapCaptor jpcap1 =  JpcapCaptor.openDevice(deviceName, 1028, true, 100);
         jpcap1.loopPacket(100000, new JpcapTip());


      }
     
      
      
     
}