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Jxnet: Capturing The Packets With Callback 


package com.ardikars.test.jxnet;

import java.nio.ByteBuffer;

import com.ardikars.jxnet.Jxnet;
import com.ardikars.jxnet.Pcap;
import com.ardikars.jxnet.PcapHandler;
import com.ardikars.jxnet.PcapPktHdr;

public class CapturingThePacketsWithCallback {
 
 public static void main(String[] args) {
  
  StringBuilder errbuf = new StringBuilder();
  String source = Jxnet.pcapLookupdev(errbuf);
  if(source == null) {
   System.err.println(errbuf.toString());
   return;
  }
  Pcap pcap = Jxnet.pcapOpenLive(source, 65535, 1, 2000, errbuf);
  if(pcap == null) {
   System.err.println(errbuf.toString());
   return;
  }
  PcapHandler callback = new PcapHandler() {
   @Override
   public void nextPacket(Object u, PcapPktHdr h, ByteBuffer b) {
    System.out.println(h);
    System.out.println(b);
   }
  };
  Jxnet.pcapLoop(pcap, 10, callback, null);
  Jxnet.pcapClose(pcap);
 }
 
}
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