SharpPcap 抓取数据包源码，代码实例

不得不佩服SharpPcap的强大，很多我们需要网络协议，枚举等已经非常完善了

一个简单的代码，获取网络设备列表

 

            //获取网络设备列表

            NetworkDeviceList crazyCoderDeviceList = IPHelper.GetAllDevices();

            //绑定到datagrideview

            dgvMain.DataSource = crazyCoderDeviceList;

            return;

发送数据包源码,仅供示例用

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

using Tamir.IPLib;

using Tamir.IPLib.Packets;

using Tamir.IPLib.Protocols;

using Tamir.IPLib.Util;

using Test;

 

namespace CrazyCoder.Cn.Test

{

    public partial class CrazyCoder_PcapTest : Form

    {

        static int lLen = EthernetFields_Fields.ETH_HEADER_LEN;      

        static string destIP = "192.168.1.3";

        static string destMAC = "00-E0-A0-06-F3-22";

        static int destPort = 80;

        static int sourcePort = 2222;

        public Form1()

        {

            InitializeComponent();

        }

        private void button1_Click(object sender, EventArgs e)

        {

            //获取网络设备列表

            NetworkDeviceList crazyCoderDeviceList = IPHelper.GetAllDevices();

            //绑定到datagrideview

            dgvMain.DataSource = crazyCoderDeviceList;

            //实例化网卡实例

            NetworkDevice crazyCoderDev = new NetworkDevice("{D8E51B8B-DF57-4CD5-A36A-06C6B9391666}");

            byte[] bytes = new byte[54];

            TCPPacket tcp = new TCPPacket(lLen, bytes, true);

            //枚举

            tcp.SourceHwAddress = crazyCoderDev.MacAddress;                //本机MAC地址

            tcp.DestinationHwAddress = destMAC;         //目的MAC地址

            tcp.EthernetProtocol = EthernetProtocols_Fields.IP;

 

            tcp.DestinationAddress = destIP;                 

            tcp.SourceAddress = crazyCoderDev.IpAddress;         

            //tcp.SourceAddress = "192.168.1.98";          

            tcp.IPProtocol = IPProtocols_Fields.TCP;

            tcp.TimeToLive = 20;

            tcp.Id = 100;

            tcp.Version = 4;

            tcp.IPTotalLength = bytes.Length - lLen;              

            tcp.IPHeaderLength = IPFields_Fields.IP_HEADER_LEN;

 

            //TCP

            tcp.SourcePort = sourcePort;                      

            tcp.DestinationPort = destPort;                   

            tcp.Syn = true;                                     

            tcp.WindowSize = 555;

            tcp.AcknowledgementNumber = 1000;

            tcp.SequenceNumber = 1000;

            tcp.TCPHeaderLength = TCPFields_Fields.TCP_HEADER_LEN;              

            //tcp.SetData( System.Text.Encoding.ASCII.GetBytes("HELLO CrazyCoder.cn") );

            tcp.ComputeIPChecksum();

            tcp.ComputeTCPChecksum();

            crazyCoderDev.PcapOpen(true, 20);

 

            crazyCoderDev.PcapSetFilter("ip src " + destIP + " and ip dst " +

                crazyCoderDev.IpAddress + " and tcp src port " + destPort + " and tcp dst port " + sourcePort);

            //发送数据包

            Console.Write("Sending packet: " + tcp + "...");

            crazyCoderDev.PcapSendPacket(tcp);

            Console.WriteLine("Packet sent.");

 

            Packet reply;

           

            while ((reply = crazyCoderDev.PcapGetNextPacket()) == null) ;

            string str = "";

            str += "Reply received: " + reply;

            crazyCoderDev.PcapClose();

            MessageBox.Show(str);

        }

    }

}