using System; using System.Drawing; using System.Collections; using System.Windows.Forms; using System.Net; using System.Net.Sockets; using System.Runtime.InteropServices; using System.Text; //Download by http://www.codefans.net namespace Ping { /// <summary> /// Summary description for Form1. /// </summary> public class Form1 : System.Windows.Forms.Form { #region Form Data private System.Windows.Forms.TextBox txtHost; private System.Windows.Forms.Label lblHost; private System.Windows.Forms.ListBox listBox1; private System.Windows.Forms.Button btnPing; private System.Windows.Forms.NumericUpDown udCount; private System.Windows.Forms.Label label1; private System.Windows.Forms.Label label2; private System.Windows.Forms.MainMenu mainMenu1; #endregion public Form1() { // // Required for Windows Form Designer support // InitializeComponent(); txtHost.Text = "www.yahoo.com"; } /// <summary> /// Clean up any resources being used. /// </summary> protected override void Dispose( bool disposing ) { base.Dispose( disposing ); } #region Windows Form Designer generated code /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> private void InitializeComponent() { this.mainMenu1 = new System.Windows.Forms.MainMenu(); this.txtHost = new System.Windows.Forms.TextBox(); this.btnPing = new System.Windows.Forms.Button(); this.lblHost = new System.Windows.Forms.Label(); this.listBox1 = new System.Windows.Forms.ListBox(); this.udCount = new System.Windows.Forms.NumericUpDown(); this.label1 = new System.Windows.Forms.Label(); this.label2 = new System.Windows.Forms.Label(); // // txtHost // this.txtHost.Location = new System.Drawing.Point(40, 16); this.txtHost.Text = "192.168.0.2"; // // btnPing // this.btnPing.Location = new System.Drawing.Point(168, 40); this.btnPing.Size = new System.Drawing.Size(64, 20); this.btnPing.Text = "Ping"; this.btnPing.Click += new System.EventHandler(this.btnPing_Click); // // lblHost // this.lblHost.Location = new System.Drawing.Point(144, 16); this.lblHost.Size = new System.Drawing.Size(96, 20); // // listBox1 // this.listBox1.Location = new System.Drawing.Point(0, 72); this.listBox1.Size = new System.Drawing.Size(240, 170); // // udCount // this.udCount.Location = new System.Drawing.Point(48, 40); this.udCount.Minimum = new System.Decimal(new int[] { 1, 0, 0, 0}); this.udCount.Size = new System.Drawing.Size(48, 20); this.udCount.Value = new System.Decimal(new int[] { 4, 0, 0, 0}); // // label1 // this.label1.Location = new System.Drawing.Point(0, 16); this.label1.Size = new System.Drawing.Size(32, 20); this.label1.Text = "Addr:"; // // label2 // this.label2.Location = new System.Drawing.Point(0, 40); this.label2.Size = new System.Drawing.Size(40, 20); this.label2.Text = "Count:"; // // Form1 // this.Controls.Add(this.label2); this.Controls.Add(this.label1); this.Controls.Add(this.udCount); this.Controls.Add(this.listBox1); this.Controls.Add(this.lblHost); this.Controls.Add(this.btnPing); this.Controls.Add(this.txtHost); this.Menu = this.mainMenu1; this.MinimizeBox = false; this.Text = "Form1"; } #endregion /// <summary> /// The main entry point for the application. /// </summary> static void Main() { Application.Run(new Form1()); } private void btnPing_Click(object sender, System.EventArgs e) { string addr = txtHost.Text; IPHostEntry entry = null; try { entry = Dns.GetHostByName(addr); } catch( SocketException ) { } if (entry==null || entry.AddressList.Length == 0) { MessageBox.Show("Could not resolve " + addr); txtHost.Focus(); return; } lblHost.Text = entry.AddressList[0].ToString(); byte[] RequestData = Encoding.ASCII.GetBytes( new string(' ', 64) ); //Allocate ICMP_ECHO_REPLY structure ICMP_ECHO_REPLY reply = new ICMP_ECHO_REPLY(255); reply.DataSize = 255; IntPtr pData = LocalAlloc(LMEM_ZEROINIT, reply.DataSize); reply.Data = pData; IntPtr h = IcmpCreateFile(); uint ipaddr = (uint)entry.AddressList[0].Address; listBox1.Items.Clear(); for ( int i = 0; i < (int)udCount.Value; i++ ) { uint ret = IcmpSendEcho(h, ipaddr, RequestData, (short)RequestData.Length, IntPtr.Zero, reply._Data, reply._Data.Length, 1000); int dwErr = 0; if ( ret == 0 ) { dwErr = GetLastError(); if ( dwErr != 11010 ) // If error is other than timeout - display a message MessageBox.Show("Failed to ping. Error code: " + dwErr.ToString()); } if ( dwErr != 11010 ) listBox1.Items.Add(string.Format("RTT: {0}, Data Size: {1}; TTL: {2}", reply.RoundTripTime, reply.DataSize, reply.Ttl)); else listBox1.Items.Add("Request timed out"); listBox1.SelectedIndex = listBox1.Items.Count - 1; Application.DoEvents(); System.Threading.Thread.Sleep(100); } IcmpCloseHandle(h); LocalFree(reply.Data); } #region Memory Management [DllImport("coredll")] extern public static IntPtr LocalAlloc(int flags, int size); [DllImport("coredll")] extern public static IntPtr LocalFree(IntPtr pMem); const int LMEM_ZEROINIT = 0x40; #endregion #region IPHLPAPI P/Invokes [DllImport("iphlpapi")] extern public static IntPtr IcmpCreateFile (); [DllImport("iphlpapi")] extern public static bool IcmpCloseHandle(IntPtr h); [DllImport("iphlpapi")] extern public static uint IcmpSendEcho( IntPtr IcmpHandle, uint DestinationAddress, byte[] RequestData, short RequestSize, IntPtr /*IP_OPTION_INFORMATION*/ RequestOptions, byte[] ReplyBuffer, int ReplySize, int Timeout ); #endregion [DllImport("coredll")] extern static int GetLastError(); } public class ICMP_ECHO_REPLY { public ICMP_ECHO_REPLY(int size) { data = new byte[size]; } byte[] data; public byte[] _Data { get { return data; } } public int Address { get { return BitConverter.ToInt32(data, 0); } } public int Status { get { return BitConverter.ToInt32(data, 4); } } public int RoundTripTime { get { return BitConverter.ToInt32(data, 8); } } public short DataSize { get { return BitConverter.ToInt16(data, 0xc); } set { BitConverter.GetBytes( value ).CopyTo(data, 0xc);} } public IntPtr Data { get { return new IntPtr(BitConverter.ToInt32(data, 0x10)); } set { BitConverter.GetBytes( value.ToInt32() ).CopyTo(data, 0x10);} } public byte Ttl {get { return data[0x14]; } } public byte Tos {get { return data[0x15]; } } public byte Flags {get { return data[0x16]; } } public byte OptionsSize {get { return data[0x17]; } } public IntPtr OptionsData { get { return new IntPtr(BitConverter.ToInt32(data, 0x18)); } set { BitConverter.GetBytes( value.ToInt32() ).CopyTo(data, 0x18);} } } }