原始套接字原码

原始套接字类，参数类

using System;
using System.Net;
using System.Net.Sockets;
using System.Runtime.InteropServices;
using System.Windows.Forms;
namespace ReceiveAll
...{
    [StructLayout(LayoutKind.Explicit)]
    public struct IPHeader
    ...{
        [FieldOffset(0)] public byte ip_verlen; //I4位首部长度+4位IP版本号
        [FieldOffset(1)] public byte ip_tos; //8位服务类型TOS
        [FieldOffset(2)] public ushort ip_totallength; //16位数据包总长度（字节）
        [FieldOffset(4)] public ushort ip_id; //16位标识
        [FieldOffset(6)] public ushort ip_offset; //3位标志位
        [FieldOffset(8)] public byte ip_ttl; //8位生存时间 TTL
        [FieldOffset(9)] public byte ip_protocol; //8位协议(TCP, UDP, ICMP, Etc.)
        [FieldOffset(10)] public ushort ip_checksum; //16位IP首部校验和
        [FieldOffset(12)] public uint ip_srcaddr; //32位源IP地址
        [FieldOffset(16)] public uint ip_destaddr; //32位目的IP地址    
    }

    public class RawSocket
    ...{
        private bool error_occurred;//是否产生错误
        public bool KeepRunning;//是否继续进行
        private static int len_receive_buf;//得到的数据流的长度
        byte [] receive_buf_bytes;//收到的字节
        private Socket socket = null; //声明套接字
        const int SIO_R = unchecked((int)0x98000001);//监听所有的数据包
        const int SIO_1=unchecked((int)0x98000002);
        const int SIO_2=unchecked((int)0x98000003);
        public RawSocket()//构造函数
        ...{
            error_occurred=false;
            len_receive_buf = 4096;//4k
            receive_buf_bytes = new byte[len_receive_buf];
        }

        public void CreateAndBindSocket(string IP)//建立并绑定套接字
        ...{
            socket = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.IP);
            socket.Blocking = false;//置socket非阻塞状态
            socket.Bind(new IPEndPoint(IPAddress.Parse(IP), 0));

            if (SetSocketOption()==false) error_occurred=true;
        }

        public void Shutdown()
        ...{
            if(socket != null)
            ...{
                socket.Shutdown(SocketShutdown.Both);
                socket.Close();
            }
        }

        
        private bool SetSocketOption()//
        ...{
            bool ret_value = true;
            try
            ...{
                socket.SetSocketOption(SocketOptionLevel.IP, SocketOptionName.HeaderIncluded, 1);

                byte []IN = new byte[4]...{1, 0, 0, 0};
                byte []OUT = new byte[4]; 
                //低级别操作模式,接受所有的数据包，这一步是关键，必须把socket设成raw和IP Level才可用SIO_RCVALL
                int ret_code = socket.IOControl(SIO_R, IN, OUT);//低级别操作模式
            
                ret_code = OUT[0] + OUT[1] + OUT[2] + OUT[3];//把4个8位字节合成一个32位整数
                System.Windows.Forms.MessageBox.Show(ret_code.ToString());
                if(ret_code != 0) ret_value = false;
            }
            catch(SocketException)
            ...{
                ret_value = false;
            }
            return ret_value;
        }
        ---SetSocketOption简介---#region---SetSocketOption简介---
//        其中，设置套接字选项时必须使套接字包含IP包头，否则无法填充IPHeader结构，也无法获得数据包信息。 int ret_code = socket.IOControl(SIO_RCVALL, IN, OUT);是函数中最关键的一步了，因为，在windows 中我们不能用Receive函数来接收raw socket上的数据，这是因为，所有的IP包都是先递交给系统核心，然后再传输到用户程序，当发送一个raws socket包的时候（比如syn），核心并不知道，也没有这个数据被发送或者连接建立的记录，因此，当远端主机回应的时候，系统核心就把这些包都全部丢掉，从而到不了应用程序上。所以，就不能简单地使用接收函数来接收这些数据报。要达到接收数据的目的，就必须采用嗅探，接收所有通过的数据包，然后进行筛选，留下符合我们需要的。可以通过设置SIO_RCVALL，表示接收所有网络上的数据包。接下来介绍一下IOControl函数。MSDN解释它说是设置套接字为低级别操作模式，怎么低级别操作法？其实这个函数与API中的WSAIoctl函数很相似。WSAIoctl函数定义如下： 
        //        int WSAIoctl(
        //            SOCKET s, //一个指定的套接字
        //            DWORD dwIoControlCode, //控制操作码
        //            LPVOID lpvInBuffer, //指向输入数据流的指针
        //            DWORD cbInBuffer, //输入数据流的大小（字节数）
        //            LPVOID lpvOutBuffer, // 指向输出数据流的指针
        //            DWORD cbOutBuffer, //输出数据流的大小（字节数）
        //            LPDWORD lpcbBytesReturned, //指向输出字节流数目的实数值
        //            LPWSAOVERLAPPED lpOverlapped, //指向一个WSAOVERLAPPED结构
        //            LPWSAOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine//指向操作完成时执行的例程
        //            ); 
        //        C#的IOControl函数不像WSAIoctl函数那么复杂，其中只包括其中的控制操作码、输入字节流、输出字节流三个参数，不过这三个参数已经足够了。我们看到函数中定义了一个字节数组：byte []IN = new byte[4]{1, 0, 0, 0}实际上它是一个值为1的DWORD或是Int32，同样byte []OUT = new byte[4];也是，它整和了一个int,作为WSAIoctl函数中参数lpcbBytesReturned指向的值。因为设置套接字选项时可能会发生错误，需要用一个值传递错误标志： 
        #endregion 
        
        public bool ErrorOccurred
        ...{
            get
            ...{
                return error_occurred;
            }
        }
        //解析接收的数据包，形成PacketArrivedEventArgs时间数据类对象，并引发PacketArrival事件
        unsafe private void Receive(byte [] buf, int len)
        ...{
            byte temp_protocol=0;
            uint temp_version=0;
            uint temp_ip_srcaddr=0;
            uint temp_ip_destaddr=0;
            short temp_srcport=0;
            short temp_dstport=0;
            IPAddress temp_ip;

            //return;

            PacketArrivedEventArgs e=new PacketArrivedEventArgs();

            fixed(byte *fixed_buf = buf)
            ...{
                IPHeader * head = (IPHeader *) fixed_buf;
                e.HeaderLength=(uint)(head->ip_verlen & 0x0F) << 2;//4位首部长度

                temp_protocol = head->ip_protocol;
                switch(temp_protocol)
                ...{
                    case 1: e.Protocol="ICMP:"; break;
                    case 2: e.Protocol="IGMP:"; break;
                    case 6: e.Protocol="TCP:"; break;
                    case 17: e.Protocol="UDP:"; break;
                    default: e.Protocol= "UNKNOWN"; break;
                }

                temp_version =(uint)(head->ip_verlen & 0xF0) >> 4;//4位IP版本号
                e.IPVersion = temp_version.ToString();

                temp_ip_srcaddr = head->ip_srcaddr;
                temp_ip_destaddr = head->ip_destaddr;
                
                temp_ip = new IPAddress(temp_ip_srcaddr);
                e.OriginationAddress =temp_ip.ToString();//IP
                
                temp_ip = new IPAddress(temp_ip_destaddr);
                e.DestinationAddress = temp_ip.ToString();//IP

                temp_srcport = *(short *)&fixed_buf[e.HeaderLength];//端口
                temp_dstport = *(short *)&fixed_buf[e.HeaderLength+2];
                
                e.OriginationPort=IPAddress.NetworkToHostOrder(temp_srcport).ToString();
                e.DestinationPort=IPAddress.NetworkToHostOrder(temp_dstport).ToString();
                // if(e.DestinationAddress!="211.87.212.116"||int.Parse(e.DestinationPort)>1000)
                // {
                // return;
                // }
                e.PacketLength =(uint)len;
                e.MessageLength =(uint)len - e.HeaderLength;

                e.ReceiveBuffer=buf;
                //把buf中的IP头赋给PacketArrivedEventArgs中的IPHeaderBuffer
                Array.Copy(buf,0,e.IPHeaderBuffer,0,(int)e.HeaderLength);
                //把buf中的包中内容赋给PacketArrivedEventArgs中的MessageBuffer
                Array.Copy(buf,(int)e.HeaderLength,e.MessageBuffer,0,(int)e.MessageLength);
            }
            //引发PacketArrival事件
            OnPacketArrival(e);
        }

        public void Run() 
        ...{
            IAsyncResult ar = socket.BeginReceive(receive_buf_bytes, 0, len_receive_buf, SocketFlags.None, new AsyncCallback(CallReceive), this);
        }

        private void CallReceive(IAsyncResult ar)
        ...{
            int received_bytes;
            received_bytes = socket.EndReceive(ar);//received_bytes接收字节数
            Receive(receive_buf_bytes, received_bytes);//接收字节
            if (KeepRunning) Run();
        }
        //事件参数
        public class PacketArrivedEventArgs : EventArgs 
        ...{
            private string protocol;
            private string destination_port;
            private string origination_port;
            private string destination_address;
            private string origination_address;
            private string ip_version;
            private uint total_packet_length;
            private uint message_length;
            private uint header_length;
            private byte []receive_buf_bytes = null;
            private byte []ip_header_bytes = null;
            private byte []message_bytes = null;

            public PacketArrivedEventArgs() 
            ...{
                this.protocol = "";
                this.destination_port = "";
                this.origination_port = "";
                this.destination_address = "";
                this.origination_address = "";
                this.ip_version = "";

                this.total_packet_length =0;
                this.message_length =0;
                this.header_length =0;

                this.receive_buf_bytes=new byte[len_receive_buf];
                this.ip_header_bytes=new byte[len_receive_buf];
                this.message_bytes=new byte[len_receive_buf];
            }

            public string Protocol
            ...{
                get ...{return protocol;}
                set ...{protocol=value;}
            }
            public string DestinationPort
            ...{
                get ...{return destination_port;}
                set ...{destination_port=value;}
            }
            public string OriginationPort
            ...{
                get ...{return origination_port;}
                set ...{origination_port=value;}
            }
            public string DestinationAddress
            ...{
                get ...{return destination_address;}
                set ...{destination_address=value;}
            }
            public string OriginationAddress
            ...{
                get ...{return origination_address;}
                set ...{origination_address=value;}
            }
            public string IPVersion
            ...{
                get ...{return ip_version;}
                set ...{ip_version=value;}
            }
            public uint PacketLength
            ...{
                get ...{return total_packet_length;}
                set ...{total_packet_length=value;}
            }
            public uint MessageLength
            ...{
                get ...{return message_length;}
                set ...{message_length=value;}
            }
            public uint HeaderLength
            ...{
                get ...{return header_length;}
                set ...{header_length=value;}
            }
            
            public byte [] ReceiveBuffer
            ...{
                get ...{return receive_buf_bytes;}
                set ...{receive_buf_bytes=value;}
            }
            public byte [] IPHeaderBuffer
            ...{
                get ...{return ip_header_bytes;}
                set ...{ip_header_bytes=value;}
            }
            public byte [] MessageBuffer
            ...{
                get ...{return message_bytes;}
                set ...{message_bytes=value;}
            }
            
        }

        public delegate void PacketArrivedEventHandler(Object sender, PacketArrivedEventArgs args);

        public event PacketArrivedEventHandler PacketArrival;

        protected virtual void OnPacketArrival(PacketArrivedEventArgs e) 
        ...{
            if (PacketArrival != null) 
            ...{
                PacketArrival(this, e);
            }
        }
    }
}

 

实现代码

 

//Form1.cs
using System;
using System.Net;
using System.Net.Sockets;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Threading;
using System.Text;
namespace ReceiveAll
...{

    public class MainForm : Form
    ...{
        RawSocket myRawSock;
        private System.Windows.Forms.Button button1;
        private System.Windows.Forms.Button button2;
        private System.Windows.Forms.TextBox textBox1;
        string IPs;

        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.Label label2;
        private System.Windows.Forms.Label label4;
        private System.Windows.Forms.Label label5;
        private System.Windows.Forms.Label label6;
        private System.Windows.Forms.Label label3;
        private System.Windows.Forms.Label label7;
        private System.Windows.Forms.Label label8;
        private System.Windows.Forms.TextBox textBox2;
        private System.Windows.Forms.Label label9;
        private System.Windows.Forms.Label label10;
        private System.Windows.Forms.TextBox textBox3;
        private System.Windows.Forms.Label label11;
        private System.Windows.Forms.Label label12;
        private System.Windows.Forms.Label label13;
        private System.Windows.Forms.Label label14;
        private System.Windows.Forms.Label label15;
        private System.Windows.Forms.Label label16;
        private System.Windows.Forms.Label label17;
        private System.Windows.Forms.Label label18;
        private System.Windows.Forms.TextBox textBox4;
        private System.Windows.Forms.Label label19;
        private System.Windows.Forms.Label label20;
        private System.Windows.Forms.TextBox textBox5;
        private System.Windows.Forms.TextBox textBox6;
        private System.Windows.Forms.Button button3;
        private System.Windows.Forms.Button button4;

        private System.ComponentModel.Container components = null;

        public MainForm()
        ...{
            IPAddress ipa;
            InitializeComponent();
            this.AutoScale=true;
            String host=Dns.GetHostName();//获得主机名
            IPHostEntry iph=Dns.Resolve(host);//解析主机地址
            ipa=iph.AddressList[0];//解析主机ip
            IPs=ipa.ToString();
            textBox2.Text=IPs;
            textBox3.Text=host;
        }

        protected override void Dispose( bool disposing )
        ...{
            if( disposing )
            ...{
                if(components != null)
                ...{
                    components.Dispose();
                }
            }
            base.Dispose( disposing );
        }

        Windows Form Designer generated code#region Windows Form Designer generated code
        /**//// 
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// 
        private void InitializeComponent()
        ...{
            this.button1 = new System.Windows.Forms.Button();
            this.button2 = new System.Windows.Forms.Button();
            this.textBox1 = new System.Windows.Forms.TextBox();
            this.label1 = new System.Windows.Forms.Label();
            this.label2 = new System.Windows.Forms.Label();
            this.label4 = new System.Windows.Forms.Label();
            this.label5 = new System.Windows.Forms.Label();
            this.label6 = new System.Windows.Forms.Label();
            this.label3 = new System.Windows.Forms.Label();
            this.label7 = new System.Windows.Forms.Label();
            this.label8 = new System.Windows.Forms.Label();
            this.textBox2 = new System.Windows.Forms.TextBox();
            this.label9 = new System.Windows.Forms.Label();
            this.label10 = new System.Windows.Forms.Label();
            this.textBox3 = new System.Windows.Forms.TextBox();
            this.label11 = new System.Windows.Forms.Label();
            this.label12 = new System.Windows.Forms.Label();
            this.label13 = new System.Windows.Forms.Label();
            this.label14 = new System.Windows.Forms.Label();
            this.label15 = new System.Windows.Forms.Label();
            this.label16 = new System.Windows.Forms.Label();
            this.label17 = new System.Windows.Forms.Label();
            this.label18 = new System.Windows.Forms.Label();
            this.textBox4 = new System.Windows.Forms.TextBox();
            this.label19 = new System.Windows.Forms.Label();
            this.label20 = new System.Windows.Forms.Label();
            this.textBox5 = new System.Windows.Forms.TextBox();
            this.textBox6 = new System.Windows.Forms.TextBox();
            this.button3 = new System.Windows.Forms.Button();
            this.button4 = new System.Windows.Forms.Button();
            this.SuspendLayout();
            // 
            // button1
            // 
            this.button1.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
            this.button1.Location = new System.Drawing.Point(8, 536);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(120, 24);
            this.button1.TabIndex = 1;
            this.button1.Text = "&Start";
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // button2
            // 
            this.button2.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
            this.button2.Location = new System.Drawing.Point(128, 536);
            this.button2.Name = "button2";
            this.button2.Size = new System.Drawing.Size(120, 24);
            this.button2.TabIndex = 2;
            this.button2.Text = "s&Top";
            this.button2.Click += new System.EventHandler(this.button2_Click);
            // 
            // textBox1
            // 
            this.textBox1.Anchor = System.Windows.Forms.AnchorStyles.Left;
            this.textBox1.Location = new System.Drawing.Point(0, 40);
            this.textBox1.Multiline = true;
            this.textBox1.Name = "textBox1";
            this.textBox1.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
            this.textBox1.Size = new System.Drawing.Size(810, 208);
            this.textBox1.TabIndex = 3;
            this.textBox1.Text = "";
            // 
            // label1
            // 
            this.label1.BackColor = System.Drawing.SystemColors.Control;
            this.label1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
            this.label1.Location = new System.Drawing.Point(0, 24);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(136, 16);
            this.label1.TabIndex = 4;
            this.label1.Text = "源IP";
            this.label1.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
            // 
            // label2
            // 
            this.label2.BackColor = System.Drawing.SystemColors.Control;
            this.label2.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
            this.label2.Location = new System.Drawing.Point(136, 24);
            this.label2.Name = "label2";
            this.label2.Size = new System.Drawing.Size(88, 16);
            this.label2.TabIndex = 5;
            this.label2.Text = "源端口";
            this.label2.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
            // 
            // label4
            // 
            this.label4.BackColor = System.Drawing.SystemColors.Control;
            this.label4.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
            this.label4.Location = new System.Drawing.Point(360, 24);
            this.label4.Name = "label4";
            this.label4.Size = new System.Drawing.Size(96, 16);
            this.label4.TabIndex = 7;
            this.label4.Text = "目的端口";
            this.label4.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
            // 
            // label5
            // 
            this.label5.BackColor = System.Drawing.SystemColors.Control;
            this.label5.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
            this.label5.Location = new System.Drawing.Point(224, 24);
            this.label5.Name = "label5";
            this.label5.Size = new System.Drawing.Size(136, 16);
            this.label5.TabIndex = 8;
            this.label5.Text = "目的IP";
            this.label5.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
            // 
            // label6
            // 
            this.label6.BackColor = System.Drawing.SystemColors.Control;
            this.label6.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
            this.label6.Location = new System.Drawing.Point(456, 24);
            this.label6.Name = "label6";
            this.label6.Size = new System.Drawing.Size(80, 16);
            this.label6.TabIndex = 9;
            this.label6.Text = "协议";
            this.label6.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
            // 
            // label3
            // 
            this.label3.BackColor = System.Drawing.SystemColors.Control;
            this.label3.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
            this.label3.Location = new System.Drawing.Point(536, 24);
            this.label3.Name = "label3";
            this.label3.Size = new System.Drawing.Size(88, 16);
            this.label3.TabIndex = 10;
            this.label3.Text = "包长";
            this.label3.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
            // 
            // label7
            // 
            this.label7.BackColor = System.Drawing.SystemColors.Control;
            this.label7.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
            this.label7.Location = new System.Drawing.Point(624, 24);
            this.label7.Name = "label7";
            this.label7.Size = new System.Drawing.Size(136, 16);
            this.label7.TabIndex = 11;
            this.label7.Text = "IP头长";
            this.label7.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
            // 
            // label8
            // 
            this.label8.BackColor = System.Drawing.SystemColors.Control;
            this.label8.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
            this.label8.Location = new System.Drawing.Point(760, 24);
            this.label8.Name = "label8";
            this.label8.Size = new System.Drawing.Size(48, 16);
            this.label8.TabIndex = 12;
            this.label8.Text = "IP版本";
            this.label8.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
            // 
            // textBox2
            // 
            this.textBox2.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
            this.textBox2.Location = new System.Drawing.Point(428, 536);
            this.textBox2.Name = "textBox2";
            this.textBox2.Size = new System.Drawing.Size(128, 21);
            this.textBox2.TabIndex = 13;
            this.textBox2.Text = "";
            // 
            // label9
            // 
            this.label9.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
            this.label9.Location = new System.Drawing.Point(372, 536);
            this.label9.Name = "label9";
            this.label9.Size = new System.Drawing.Size(48, 16);
            this.label9.TabIndex = 14;
            this.label9.Text = "本机IP:";
            // 
            // label10
            // 
            this.label10.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
            this.label10.Location = new System.Drawing.Point(564, 536);
            this.label10.Name = "label10";
            this.label10.Size = new System.Drawing.Size(72, 16);
            this.label10.TabIndex = 15;
            this.label10.Text = "本机标识：";
            // 
            // textBox3
            // 
            this.textBox3.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
            this.textBox3.Location = new System.Drawing.Point(636, 536);
            this.textBox3.Name = "textBox3";
            this.textBox3.Size = new System.Drawing.Size(168, 21);
            this.textBox3.TabIndex = 16;
            this.textBox3.Text = "";
            // 
            // label11
            // 
            this.label11.BackColor = System.Drawing.SystemColors.Control;
            this.label11.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
            this.label11.Location = new System.Drawing.Point(760, 280);
            this.label11.Name = "label11";
            this.label11.Size = new System.Drawing.Size(48, 16);
            this.label11.TabIndex = 25;
            this.label11.Text = "IP版本";
            this.label11.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
            // 
            // label12
            // 
            this.label12.BackColor = System.Drawing.SystemColors.Control;
            this.label12.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
            this.label12.Location = new System.Drawing.Point(624, 280);
            this.label12.Name = "label12";
            this.label12.Size = new System.Drawing.Size(136, 16);
            this.label12.TabIndex = 24;
            this.label12.Text = "IP头长";
            this.label12.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
            // 
            // label13
            // 
            this.label13.BackColor = System.Drawing.SystemColors.Control;
            this.label13.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
            this.label13.Location = new System.Drawing.Point(536, 280);
            this.label13.Name = "label13";
            this.label13.Size = new System.Drawing.Size(88, 16);
            this.label13.TabIndex = 23;
            this.label13.Text = "包长";
            this.label13.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
            // 
            // label14
            // 
            this.label14.BackColor = System.Drawing.SystemColors.Control;
            this.label14.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
            this.label14.Location = new System.Drawing.Point(456, 280);
            this.label14.Name = "label14";
            this.label14.Size = new System.Drawing.Size(80, 16);
            this.label14.TabIndex = 22;
            this.label14.Text = "协议";
            this.label14.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
            // 
            // label15
            // 
            this.label15.BackColor = System.Drawing.SystemColors.Control;
            this.label15.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
            this.label15.Location = new System.Drawing.Point(224, 280);
            this.label15.Name = "label15";
            this.label15.Size = new System.Drawing.Size(136, 16);
            this.label15.TabIndex = 21;
            this.label15.Text = "目的IP";
            this.label15.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
            // 
            // label16
            // 
            this.label16.BackColor = System.Drawing.SystemColors.Control;
            this.label16.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
            this.label16.Location = new System.Drawing.Point(360, 280);
            this.label16.Name = "label16";
            this.label16.Size = new System.Drawing.Size(96, 16);
            this.label16.TabIndex = 20;
            this.label16.Text = "目的端口";
            this.label16.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
            // 
            // label17
            // 
            this.label17.BackColor = System.Drawing.SystemColors.Control;
            this.label17.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
            this.label17.Location = new System.Drawing.Point(136, 280);
            this.label17.Name = "label17";
            this.label17.Size = new System.Drawing.Size(88, 16);
            this.label17.TabIndex = 19;
            this.label17.Text = "源端口";
            this.label17.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
            // 
            // label18
            // 
            this.label18.BackColor = System.Drawing.SystemColors.Control;
            this.label18.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
            this.label18.Location = new System.Drawing.Point(0, 280);
            this.label18.Name = "label18";
            this.label18.Size = new System.Drawing.Size(136, 16);
            this.label18.TabIndex = 18;
            this.label18.Text = "源IP";
            this.label18.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
            // 
            // textBox4
            // 
            this.textBox4.Anchor = System.Windows.Forms.AnchorStyles.Left;
            this.textBox4.Location = new System.Drawing.Point(0, 296);
            this.textBox4.Multiline = true;
            this.textBox4.Name = "textBox4";
            this.textBox4.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
            this.textBox4.Size = new System.Drawing.Size(810, 208);
            this.textBox4.TabIndex = 17;
            this.textBox4.Text = "";
            // 
            // label19
            // 
            this.label19.Location = new System.Drawing.Point(0, 8);
            this.label19.Name = "label19";
            this.label19.Size = new System.Drawing.Size(168, 16);
            this.label19.TabIndex = 26;
            this.label19.Text = "收到的包：";
            // 
            // label20
            // 
            this.label20.Location = new System.Drawing.Point(0, 264);
            this.label20.Name = "label20";
            this.label20.Size = new System.Drawing.Size(168, 16);
            this.label20.TabIndex = 27;
            this.label20.Text = "发出的包：";
            // 
            // textBox5
            // 
            this.textBox5.Location = new System.Drawing.Point(816, 24);
            this.textBox5.Multiline = true;
            this.textBox5.Name = "textBox5";
            this.textBox5.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
            this.textBox5.Size = new System.Drawing.Size(176, 224);
            this.textBox5.TabIndex = 28;
            this.textBox5.Text = "";
            // 
            // textBox6
            // 
            this.textBox6.Location = new System.Drawing.Point(816, 280);
            this.textBox6.Multiline = true;
            this.textBox6.Name = "textBox6";
            this.textBox6.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
            this.textBox6.Size = new System.Drawing.Size(176, 224);
            this.textBox6.TabIndex = 29;
            this.textBox6.Text = "";
            // 
            // button3
            // 
            this.button3.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
            this.button3.Location = new System.Drawing.Point(248, 536);
            this.button3.Name = "button3";
            this.button3.Size = new System.Drawing.Size(120, 24);
            this.button3.TabIndex = 30;
            this.button3.Text = "&Clean";
            this.button3.Click += new System.EventHandler(this.button3_Click);
            // 
            // button4
            // 
            this.button4.Location = new System.Drawing.Point(696, 248);
            this.button4.Name = "button4";
            this.button4.Size = new System.Drawing.Size(112, 24);
            this.button4.TabIndex = 31;
            this.button4.Text = "c&Lean";
            this.button4.Click += new System.EventHandler(this.button4_Click);
            // 
            // MainForm
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
            this.ClientSize = new System.Drawing.Size(994, 561);
            this.Controls.Add(this.button4);
            this.Controls.Add(this.button3);
            this.Controls.Add(this.textBox6);
            this.Controls.Add(this.textBox5);
            this.Controls.Add(this.label20);
            this.Controls.Add(this.label19);
            this.Controls.Add(this.label11);
            this.Controls.Add(this.label12);
            this.Controls.Add(this.label13);
            this.Controls.Add(this.label14);
            this.Controls.Add(this.label15);
            this.Controls.Add(this.label16);
            this.Controls.Add(this.label17);
            this.Controls.Add(this.label18);
            this.Controls.Add(this.textBox4);
            this.Controls.Add(this.textBox3);
            this.Controls.Add(this.label10);
            this.Controls.Add(this.label9);
            this.Controls.Add(this.textBox2);
            this.Controls.Add(this.label8);
            this.Controls.Add(this.label7);
            this.Controls.Add(this.label3);
            this.Controls.Add(this.label6);
            this.Controls.Add(this.label5);
            this.Controls.Add(this.label4);
            this.Controls.Add(this.label2);
            this.Controls.Add(this.label1);
            this.Controls.Add(this.textBox1);
            this.Controls.Add(this.button2);
            this.Controls.Add(this.button1);
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
            this.MaximizeBox = false;
            this.Name = "MainForm";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "原始套接字";
            this.Load += new System.EventHandler(this.MainForm_Load);
            this.ResumeLayout(false);

        }
        #endregion

        private void MainForm_Load(object sender, System.EventArgs e)
        ...{
            string IPString="10.10.10.10";
            IPHostEntry HosyEntry = Dns.Resolve(Dns.GetHostName());
            
            if(HosyEntry.AddressList.Length > 0)
            ...{
                foreach(IPAddress ip in HosyEntry.AddressList)
                ...{
                    IPString=ip.ToString();
                }
            }

            //原始套接字
            myRawSock=new RawSocket();
            myRawSock.CreateAndBindSocket (IPString);
            myRawSock.PacketArrival += new RawSocket.PacketArrivedEventHandler(DataArrival);
        }
        //事件
        private void DataArrival(Object sender, RawSocket.PacketArrivedEventArgs e) 
        ...{
            textBox1.Text+=e.OriginationAddress+" "+e.OriginationPort+" "+e.DestinationAddress+" "+e.DestinationPort+" "+e.Protocol+" "+e.PacketLength+" "+e.HeaderLength+" "+e.IPVersion+" ";
            
//            string s=null;
//            byte[] sByte=new byte[e.MessageBuffer.Length];
//            
//            if(e.OriginationAddress.Equals(IPs))
//            {
//             textBox4.Text+=e.OriginationAddress+" "+e.OriginationPort+" "+e.DestinationAddress+" "+e.DestinationPort+" "+e.Protocol+" "+e.PacketLength+" "+e.HeaderLength+" "+e.IPVersion+" ";
//             for(int i=0;i<e.MessageBuffer.Length;i++)
/**/////                 sByte[i]=e.MessageBuffer[i];
//                s+=e.MessageBuffer[i].ToString();
/**/////            s=Encoding.ASCII.GetString(e.MessageBuffer);
//             textBox6.Text=s;
//    
//            }
//            if(e.DestinationAddress.Equals(IPs))
//            {
//             textBox1.Text+=e.OriginationAddress+" "+e.OriginationPort+" "+e.DestinationAddress+" "+e.DestinationPort+" "+e.Protocol+" "+e.PacketLength+" "+e.HeaderLength+" "+e.IPVersion+" ";
//             for(int i=0;i<e.MessageBuffer.Length;i++)
/**/////                 sByte[i]=e.MessageBuffer[i];
//                 s+=e.MessageBuffer[i].ToString();
/**/////            s=Encoding.ASCII.GetString(e.MessageBuffer);
//             textBox5.Text=s;
//             while(true);
//            }

        }
        //开始监听
        private void button1_Click(object sender, System.EventArgs e)
        ...{
            myRawSock.KeepRunning =true;
            myRawSock.Run ();
        }
        //停止
        private void button2_Click(object sender, System.EventArgs e)
        ...{
            myRawSock.KeepRunning =false;
        }

        private void button3_Click(object sender, System.EventArgs e)
        ...{
            textBox4.Text="";
        }

        private void button4_Click(object sender, System.EventArgs e)
        ...{
            textBox1.Text="";
        }

    }
}