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Declare Function IcmpSendEcho Lib "icmp.dll" (icmpHandle as IntPtr, destinationAddress as Int32, requestData as IntPtr, requestSize as Int16, requestOptions as IntPtr, replyBuffer as IntPtr, replySize as Int32, timeout as Int32) As Int32
replyBuffer receives an ICMP_ECHO_REPLY followed by zero or more bytes of reply data for each reply received.
Notes:
None.
Tips & Tricks:
Please add some!
Sample Code:
Complete "simple sample" coded by Aprelov Sergey:
public class ICMPPing
{
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Ansi)]
private struct ICMP_OPTIONS
{
public Byte Ttl;
public Byte Tos;
public Byte Flags;
public Byte OptionsSize;
public IntPtr OptionsData;
};
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Ansi)]
private struct ICMP_ECHO_REPLY
{
public int Address;
public int Status;
public int RoundTripTime;
public Int16 DataSize;
public Int16 Reserved;
public IntPtr DataPtr;
public ICMP_OPTIONS Options;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst=250)]
public String Data;
}
SelectQuery query =
new SelectQuery("Win32_PingStatus",
"Address='" + hostnamePar + "'");
using (ManagementObjectSearcher searcher =
new ManagementObjectSearcher(query))
{
foreach (ManagementBaseObject comp in
searcher.Get())
{
//its null if name doesn't resolve
if ((Convert.ToInt32(comp["StatusCode"]) == 0) && (!(comp["StatusCode"] == null)))
{
//It does ping
}
else
{
//It doesn't ping
}
}
}
Describes the options to be included in the header of an IP packet.
7/12/2021 6:32:54 PM - -64.19.72.74
An IntPtr is a pointer to a memory location (unmanaged) that adapts to the platform it is running on (64-bit, etc.) UNLIKE a standard int/Integer. You should always use this type for unmanaged calls that require it, even though an int will appear to work on your development machine.
1/13/2008 4:00:13 AM - Damon Carr-72.43.165.29
Describes the data returned in response to an echo request.
7/12/2021 6:36:09 PM - -64.19.72.74
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