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('\0', 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);} }
}
}
