c# 下实现ping 命令操作
2015-06-26 09:46
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1>通过.net提供的类实现
2>同过调用cmd 的ping实现
3>利用原始Socket套接字,实现ICMP协议。
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Diagnostics; using System.Net.NetworkInformation; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { Ping ping = new Ping(); Console.WriteLine(ping.Send("192.168.0.33").Status); Console.Read(); } } }
2>同过调用cmd 的ping实现
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Diagnostics; using System.Net.NetworkInformation; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { Console.WriteLine(PingByProcess("192.168.0.33")); Console.Read(); } static string PingByProcess(string ip) { using (Process p = new Process()) { p.StartInfo.FileName = "cmd.exe"; p.StartInfo.UseShellExecute = false; p.StartInfo.RedirectStandardInput = true; p.StartInfo.RedirectStandardOutput = true; p.StartInfo.RedirectStandardError = true; p.StartInfo.CreateNoWindow = true; p.Start(); p.StandardInput.WriteLine(string.Format("ping -n 1 {0}", ip)); return p.StandardOutput.ReadToEnd(); } } } }
3>利用原始Socket套接字,实现ICMP协议。
using System; using System.Collections.Generic; using System.Text; using System.Net; using System.Net.Sockets; public class PingHelp { const int SOCKET_ERROR = -1; const int ICMP_ECHO = 8; public string PingHost(string host) { // 声明 IPHostEntry IPHostEntry ServerHE, fromHE; int nBytes = 0; int dwStart = 0, dwStop = 0; //初始化ICMP的Socket Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Raw, ProtocolType.Icmp); socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.SendTimeout, 1000); // 得到Server EndPoint try { ServerHE = Dns.GetHostByName(host); } catch (Exception) { return "没有发现主机"; } // 把 Server IP_EndPoint转换成EndPoint IPEndPoint ipepServer = new IPEndPoint(ServerHE.AddressList[0], 0); EndPoint epServer = (ipepServer); // 设定客户机的接收Endpoint fromHE = Dns.GetHostByName(Dns.GetHostName()); IPEndPoint ipEndPointFrom = new IPEndPoint(fromHE.AddressList[0], 0); EndPoint EndPointFrom = (ipEndPointFrom); int PacketSize = 0; IcmpPacket packet = new IcmpPacket(); // 构建要发送的包 packet.Type = ICMP_ECHO; //8 packet.SubCode = 0; packet.CheckSum = 0; packet.Identifier = 45; packet.SequenceNumber = 0; int PingData = 24; // sizeof(IcmpPacket) - 8; packet.Data = new Byte[PingData]; // 初始化Packet.Data for (int i = 0; i < PingData; i++) { packet.Data[i] = (byte)'#'; } //Variable to hold the total Packet size PacketSize = 32; Byte[] icmp_pkt_buffer = new Byte[PacketSize]; Int32 Index = 0; //again check the packet size Index = Serialize( packet, icmp_pkt_buffer, PacketSize, PingData); //if there is a error report it if (Index == -1) { return "Error Creating Packet"; } // convert into a UInt16 array //Get the Half size of the Packet Double double_length = Convert.ToDouble(Index); Double dtemp = Math.Ceiling(double_length / 2); int cksum_buffer_length = Index / 2; //Create a Byte Array UInt16[] cksum_buffer = new UInt16[cksum_buffer_length]; //Code to initialize the Uint16 array int icmp_header_buffer_index = 0; for (int i = 0; i < cksum_buffer_length; i++) { cksum_buffer[i] = BitConverter.ToUInt16(icmp_pkt_buffer, icmp_header_buffer_index); icmp_header_buffer_index += 2; } //Call a method which will return a checksum UInt16 u_cksum = checksum(cksum_buffer, cksum_buffer_length); //Save the checksum to the Packet packet.CheckSum = u_cksum; // Now that we have the checksum, serialize the packet again Byte[] sendbuf = new Byte[PacketSize]; //again check the packet size Index = Serialize( packet, sendbuf, PacketSize, PingData); //if there is a error report it if (Index == -1) { return "Error Creating Packet"; } dwStart = System.Environment.TickCount; // Start timing //send the Packet over the socket if ((nBytes = socket.SendTo(sendbuf, PacketSize, 0, epServer)) == SOCKET_ERROR) { return "Socket Error: cannot send Packet"; } // Initialize the buffers. The receive buffer is the size of the // ICMP header plus the IP header (20 bytes) Byte[] ReceiveBuffer = new Byte[256]; nBytes = 0; //Receive the bytes bool recd = false; int timeout = 0; //loop for checking the time of the server responding while (!recd) { nBytes = socket.ReceiveFrom(ReceiveBuffer, 256, 0, ref EndPointFrom); if (nBytes == SOCKET_ERROR) { return "主机没有响应"; } else if (nBytes > 0) { dwStop = System.Environment.TickCount - dwStart; // stop timing return "Reply from " + epServer.ToString() + " in " + dwStop + "ms. Received: " + nBytes + " Bytes."; } timeout = System.Environment.TickCount - dwStart; if (timeout > 1000) { return "超时"; } } //close the socket socket.Close(); return ""; } /// <summary> /// This method get the Packet and calculates the total size /// of the Pack by converting it to byte array /// </summary> public static Int32 Serialize(IcmpPacket packet, Byte[] Buffer, Int32 PacketSize, Int32 PingData) { Int32 cbReturn = 0; // serialize the struct into the array int Index = 0; Byte[] b_type = new Byte[1]; b_type[0] = (packet.Type); Byte[] b_code = new Byte[1]; b_code[0] = (packet.SubCode); Byte[] b_cksum = BitConverter.GetBytes(packet.CheckSum); Byte[] b_id = BitConverter.GetBytes(packet.Identifier); Byte[] b_seq = BitConverter.GetBytes(packet.SequenceNumber); Array.Copy(b_type, 0, Buffer, Index, b_type.Length); Index += b_type.Length; Array.Copy(b_code, 0, Buffer, Index, b_code.Length); Index += b_code.Length; Array.Copy(b_cksum, 0, Buffer, Index, b_cksum.Length); Index += b_cksum.Length; Array.Copy(b_id, 0, Buffer, Index, b_id.Length); Index += b_id.Length; Array.Copy(b_seq, 0, Buffer, Index, b_seq.Length); Index += b_seq.Length; // copy the data Array.Copy(packet.Data, 0, Buffer, Index, PingData); Index += PingData; if (Index != PacketSize/* sizeof(IcmpPacket) */) { cbReturn = -1; return cbReturn; } cbReturn = Index; return cbReturn; } /// <summary> /// This Method has the algorithm to make a checksum /// </summary> public static UInt16 checksum(UInt16[] buffer, int size) { Int32 cksum = 0; int counter; counter = 0; while (size > 0) { UInt16 val = buffer[counter]; cksum += buffer[counter]; counter += 1; size -= 1; } cksum = (cksum >> 16) + (cksum & 0xffff); cksum += (cksum >> 16); return (UInt16)(~cksum); } } /// 类结束 /// <summary> /// Class that holds the Pack information /// </summary> public class IcmpPacket { public Byte Type; // type of message public Byte SubCode; // type of sub code public UInt16 CheckSum; // ones complement checksum of struct public UInt16 Identifier; // identifier public UInt16 SequenceNumber; // sequence number public Byte[] Data; } // class IcmpPacket
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Diagnostics; using System.Net.NetworkInformation; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { PingHelp p = new PingHelp(); Console.WriteLine(p.PingHost("192.168.0.120")); Console.Read(); } } }
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