Option Explicit
Private Const ICMP_SUCCESS As Long = 0
Private Const ICMP_STATUS_BUFFER_TO_SMALL = 11001
Private Const ICMP_STATUS_DESTINATION_NET_UNREACH = 11002
Private Const ICMP_STATUS_DESTINATION_HOST_UNREACH = 11003
Private Const ICMP_STATUS_DESTINATION_PROTOCOL_UNREACH = 11004
Private Const ICMP_STATUS_DESTINATION_PORT_UNREACH = 11005
Private Const ICMP_STATUS_NO_RESOURCE = 11006
Private Const ICMP_STATUS_BAD_OPTION = 11007
Private Const ICMP_STATUS_HARDWARE_ERROR = 11008
Private Const ICMP_STATUS_LARGE_PACKET = 11009
Private Const ICMP_STATUS_REQUEST_TIMED_OUT = 11010
Private Const ICMP_STATUS_BAD_REQUEST = 11011
Private Const ICMP_STATUS_BAD_ROUTE = 11012
Private Const ICMP_STATUS_TTL_EXPIRED_TRANSIT = 11013
Private Const ICMP_STATUS_TTL_EXPIRED_REASSEMBLY = 11014
Private Const ICMP_STATUS_PARAMETER = 11015
Private Const ICMP_STATUS_SOURCE_QUENCH = 11016
Private Const ICMP_STATUS_OPTION_TOO_BIG = 11017
Private Const ICMP_STATUS_BAD_DESTINATION = 11018
Private Const ICMP_STATUS_NEGOTIATING_IPSEC = 11032
Private Const ICMP_STATUS_GENERAL_FAILURE = 11050
Public Const WINSOCK_ERROR = "Windows Sockets not responding correctly."
Public Const INADDR_NONE As Long = &HFFFFFFFF
Public Const WSA_SUCCESS = 0
Public Const WS_VERSION_REQD As Long = &H101
Private Declare Function WSACleanup Lib "WSOCK32.DLL" () As Long
Private Declare Function WSAStartup Lib "WSOCK32.DLL" (ByVal wVersionRequired As Long, lpWSADATA As WSADATA) As Long
Private Declare Function IcmpCreateFile Lib "icmp.dll" () As Long
Private Declare Function inet_addr Lib "WSOCK32.DLL" (ByVal cp As String) As Long
Private Declare Function IcmpCloseHandle Lib "icmp.dll" (ByVal IcmpHandle As Long) As Long
Private Type WSADATA
wVersion As Integer
wHighVersion As Integer
szDescription(0 To 256) As Byte
szSystemStatus(0 To 128) As Byte
iMaxSockets As Long
iMaxUDPDG As Long
lpVendorInfo As Long
End Type
Private Declare Function IcmpSendEcho Lib "icmp.dll" _
(ByVal IcmpHandle As Long, _
ByVal DestinationAddress As Long, _
ByVal RequestData As String, _
ByVal RequestSize As Long, _
ByVal RequestOptions As Long, _
ReplyBuffer As ICMP_ECHO_REPLY, _
ByVal ReplySize As Long, _
ByVal Timeout As Long) As Long
Private Type IP_OPTION_INFORMATION
Ttl As Byte
Tos As Byte
Flags As Byte
OptionsSize As Byte
OptionsData As Long
End Type
Public Type ICMP_ECHO_REPLY
address As Long
Status As Long
RoundTripTime As Long
DataSize As Long
Reserved As Integer
ptrData As Long
Options As IP_OPTION_INFORMATION
Data As String * 250
End Type
Public Function ping(sAddress As String, Reply As ICMP_ECHO_REPLY) As Long
Dim hIcmp As Long
Dim lAddress As Long
Dim lTimeOut As Long
Dim StringToSend As String
StringToSend = "hello"
lTimeOut = 1000
lAddress = inet_addr(sAddress)
If (lAddress <> -1) And (lAddress <> 0) Then
hIcmp = IcmpCreateFile()
If hIcmp Then
Call IcmpSendEcho(hIcmp, lAddress, StringToSend, Len(StringToSend), 0, Reply, Len(Reply), lTimeOut)
ping = Reply.Status
IcmpCloseHandle hIcmp
Else
Debug.Print "failure opening icmp handle."
ping = -1
End If
Else
ping = -1
End If
End Function
Public Sub SocketsCleanup()
WSACleanup
End Sub
Public Function SocketsInitialize() As Boolean
Dim WSAD As WSADATA
SocketsInitialize = WSAStartup(WS_VERSION_REQD, WSAD) = ICMP_SUCCESS
End Function
Public Function EvaluatePingResponse(PingResponse As Long) As String
Select Case PingResponse
Case ICMP_SUCCESS: EvaluatePingResponse = "Success!"
Case ICMP_STATUS_BUFFER_TO_SMALL: EvaluatePingResponse = "Buffer Too Small"
Case ICMP_STATUS_DESTINATION_NET_UNREACH: EvaluatePingResponse = "Destination Net Unreachable"
Case ICMP_STATUS_DESTINATION_HOST_UNREACH: EvaluatePingResponse = "Destination Host Unreachable"
Case ICMP_STATUS_DESTINATION_PROTOCOL_UNREACH: EvaluatePingResponse = "Destination Protocol Unreachable"
Case ICMP_STATUS_DESTINATION_PORT_UNREACH: EvaluatePingResponse = "Destination Port Unreachable"
Case ICMP_STATUS_NO_RESOURCE: EvaluatePingResponse = "No Resources"
Case ICMP_STATUS_BAD_OPTION: EvaluatePingResponse = "Bad Option"
Case ICMP_STATUS_HARDWARE_ERROR: EvaluatePingResponse = "Hardware Error"
Case ICMP_STATUS_LARGE_PACKET: EvaluatePingResponse = "Packet Too Big"
Case ICMP_STATUS_REQUEST_TIMED_OUT: EvaluatePingResponse = "Request Timed Out"
Case ICMP_STATUS_BAD_REQUEST: EvaluatePingResponse = "Bad Request"
Case ICMP_STATUS_BAD_ROUTE: EvaluatePingResponse = "Bad Route"
Case ICMP_STATUS_TTL_EXPIRED_TRANSIT: EvaluatePingResponse = "TimeToLive Expired Transit"
Case ICMP_STATUS_TTL_EXPIRED_REASSEMBLY: EvaluatePingResponse = "TimeToLive Expired Reassembly"
Case ICMP_STATUS_PARAMETER: EvaluatePingResponse = "Parameter Problem"
Case ICMP_STATUS_SOURCE_QUENCH: EvaluatePingResponse = "Source Quench"
Case ICMP_STATUS_OPTION_TOO_BIG: EvaluatePingResponse = "Option Too Big"
Case ICMP_STATUS_BAD_DESTINATION: EvaluatePingResponse = "Bad Destination"
Case ICMP_STATUS_NEGOTIATING_IPSEC: EvaluatePingResponse = "Negotiating IPSEC"
Case ICMP_STATUS_GENERAL_FAILURE: EvaluatePingResponse = "General Failure"
Case Else: EvaluatePingResponse = "Unknown Response"
End Select
End Function
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