Option Explicit
Private Sub Command1_Click()
    Dim EnvioICMP As ICMP_ECHO_REPLY
    Dim Res As Long
    
    Me.Caption = "Realizando Ping a la dirección " & Tx_Ping.Text
    
    ' Se llama a la función IP pasándole como parámetro la dirección IP
    ' el texto que queremos enviar
    ' y una estructura donde almacenar los datos
    Res = Ping(Tx_Ping.Text, Tx_Enviar.Text, EnvioICMP)
     
    ' Muestra los resultados almacenados en la estructura
    Tx_Datos(0).Text = DescripcionCodigoRespuesta(EnvioICMP.status)
    Tx_Datos(1).Text = EnvioICMP.Address
    Tx_Datos(2).Text = EnvioICMP.RoundTripTime & " ms"
    Tx_Datos(3).Text = EnvioICMP.DataSize & " bytes"
    If Left$(EnvioICMP.Data, 1) <> Chr$(0) Then
        Tx_Datos(4).Text = Left$(EnvioICMP.Data, InStr(EnvioICMP.Data, Chr$(0)) - 1)
    Else
        Tx_Datos(4).Text = ""
    End If
    Tx_Datos(5).Text = EnvioICMP.DataPointer
    
    Me.Caption = "Ping"
End Sub

Option Explicit
Public Const IP_STATUS_BASE = 11000
Public Const IP_SUCCESS = 0
Public Const IP_BUF_TOO_SMALL = (11000 + 1)
Public Const IP_DEST_NET_UNREACHABLE = (11000 + 2)
Public Const IP_DEST_HOST_UNREACHABLE = (11000 + 3)
Public Const IP_DEST_PROT_UNREACHABLE = (11000 + 4)
Public Const IP_DEST_PORT_UNREACHABLE = (11000 + 5)
Public Const IP_NO_RESOURCES = (11000 + 6)
Public Const IP_BAD_OPTION = (11000 + 7)
Public Const IP_HW_ERROR = (11000 + 8)
Public Const IP_PACKET_TOO_BIG = (11000 + 9)
Public Const IP_REQ_TIMED_OUT = (11000 + 10)
Public Const IP_BAD_REQ = (11000 + 11)
Public Const IP_BAD_ROUTE = (11000 + 12)
Public Const IP_TTL_EXPIRED_TRANSIT = (11000 + 13)
Public Const IP_TTL_EXPIRED_REASSEM = (11000 + 14)
Public Const IP_PARAM_PROBLEM = (11000 + 15)
Public Const IP_SOURCE_QUENCH = (11000 + 16)
Public Const IP_OPTION_TOO_BIG = (11000 + 17)
Public Const IP_BAD_DESTINATION = (11000 + 18)
Public Const IP_ADDR_DELETED = (11000 + 19)
Public Const IP_SPEC_MTU_CHANGE = (11000 + 20)
Public Const IP_MTU_CHANGE = (11000 + 21)
Public Const IP_UNLOAD = (11000 + 22)
Public Const IP_ADDR_ADDED = (11000 + 23)
Public Const IP_GENERAL_FAILURE = (11000 + 50)
Public Const MAX_IP_STATUS = 11000 + 50
Public Const IP_PENDING = (11000 + 255)
Public Const PING_TIMEOUT = 200
Public Const WS_VERSION_REQD = &H101
Public Const WS_VERSION_MAJOR = WS_VERSION_REQD  &H100 And &HFF&
Public Const WS_VERSION_MINOR = WS_VERSION_REQD And &HFF&
Public Const MIN_SOCKETS_REQD = 1
Public Const SOCKET_ERROR = -1

Public Const MAX_WSADescription = 256
Public Const MAX_WSASYSStatus = 128

Public Type ICMP_OPTIONS
    Ttl             As Byte
    Tos             As Byte
    Flags           As Byte
    OptionsSize     As Byte
    OptionsData     As Long
End Type

Dim ICMPOPT As ICMP_OPTIONS

Public Type ICMP_ECHO_REPLY
    Address         As Long
    status          As Long
    RoundTripTime   As Long
    DataSize        As Integer
    Reserved        As Integer
    DataPointer     As Long
    Options         As ICMP_OPTIONS
    Data            As String * 250
End Type

Public Type HOSTENT
    hName As Long
    hAliases As Long
    hAddrType As Integer
    hLen As Integer
    hAddrList As Long
End Type

Public Type WSADATA
    wVersion As Integer
    wHighVersion As Integer
    szDescription(0 To MAX_WSADescription) As Byte
    szSystemStatus(0 To MAX_WSASYSStatus) As Byte
    wMaxSockets As Integer
    wMaxUDPDG As Integer
    dwVendorInfo As Long
End Type

Declare Function IcmpCreateFile Lib "icmp.dll" () As Long
Declare Function IcmpCloseHandle Lib "icmp.dll" (ByVal IcmpHandle As Long) As Long
Declare Function IcmpSendEcho Lib "icmp.dll" (ByVal IcmpHandle As Long, ByVal DestinationAddress As Long, _
         ByVal RequestData As String, ByVal RequestSize As Integer, ByVal RequestOptions As Long, _
         ReplyBuffer As ICMP_ECHO_REPLY, ByVal ReplySize As Long, ByVal Timeout As Long) As Long
Declare Function WSAGetLastError Lib "WSOCK32.DLL" () As Long
Declare Function WSAStartup Lib "WSOCK32.DLL" (ByVal wVersionRequired As Long, lpWSADATA As WSADATA) As Long
Declare Function WSACleanup Lib "WSOCK32.DLL" () As Long
Declare Function gethostname Lib "WSOCK32.DLL" (ByVal szHost As String, ByVal dwHostLen As Long) As Long
Declare Function gethostbyname Lib "WSOCK32.DLL" (ByVal szHost As String) As Long
Declare Sub RtlMoveMemory Lib "kernel32" (hpvDest As Any, ByVal hpvSource As Long, ByVal cbCopy As Long)
Function DescripcionCodigoRespuesta(Respuesta As Long) As String
   ' He traducido las cadenas más normales que pueden surgir
   Dim TextoRespuesta As String
   Select Case Respuesta
      Case IP_SUCCESS:               TextoRespuesta = "IP Localizada"
      Case IP_BUF_TOO_SMALL:         TextoRespuesta = "IP Buffer demasiado pequeño"
      Case IP_DEST_NET_UNREACHABLE:  TextoRespuesta = "ip dest net unreachable"
      Case IP_DEST_HOST_UNREACHABLE: TextoRespuesta = "ip dest host unreachable"
      Case IP_DEST_PROT_UNREACHABLE: TextoRespuesta = "ip dest prot unreachable"
      Case IP_DEST_PORT_UNREACHABLE: TextoRespuesta = "ip dest port unreachable"
      Case IP_NO_RESOURCES:          TextoRespuesta = "IP Sin recursos"
      Case IP_BAD_OPTION:            TextoRespuesta = "ip bad option"
      Case IP_HW_ERROR:              TextoRespuesta = "ip hw_error"
      Case IP_PACKET_TOO_BIG:        TextoRespuesta = "ip packet too_big"
      Case IP_REQ_TIMED_OUT:         TextoRespuesta = "IP TimeOut. No se ha encontrado respuesta."
      Case IP_BAD_REQ:               TextoRespuesta = "ip bad req"
      Case IP_BAD_ROUTE:             TextoRespuesta = "ip bad route"
      Case IP_TTL_EXPIRED_TRANSIT:   TextoRespuesta = "ip ttl expired transit"
      Case IP_TTL_EXPIRED_REASSEM:   TextoRespuesta = "ip ttl expired reassem"
      Case IP_PARAM_PROBLEM:         TextoRespuesta = "ip param_problem"
      Case IP_SOURCE_QUENCH:         TextoRespuesta = "ip source quench"
      Case IP_OPTION_TOO_BIG:        TextoRespuesta = "ip option too_big"
      Case IP_BAD_DESTINATION:       TextoRespuesta = "ip bad destination"
      Case IP_ADDR_DELETED:          TextoRespuesta = "ip addr deleted"
      Case IP_SPEC_MTU_CHANGE:       TextoRespuesta = "ip spec mtu change"
      Case IP_MTU_CHANGE:            TextoRespuesta = "ip mtu_change"
      Case IP_UNLOAD:                TextoRespuesta = "ip unload"
      Case IP_ADDR_ADDED:            TextoRespuesta = "ip addr added"
      Case IP_GENERAL_FAILURE:       TextoRespuesta = "IP Error general"
      Case IP_PENDING:               TextoRespuesta = "ip pending"
      Case PING_TIMEOUT:             TextoRespuesta = "TimeOut. No se ha encontrado respuesta."
      Case Else:                     TextoRespuesta = "Mensage respuesta desconocido"
   End Select
   DescripcionCodigoRespuesta = TextoRespuesta
End Function
Function HiByte(ByVal wParam As Integer)
    HiByte = wParam  &H100 And &HFF&
End Function
Function LoByte(ByVal wParam As Integer)
    LoByte = wParam And &HFF&
End Function
Function Ping(DirIP As String, TextoEnviar As String, EnvioICMP As ICMP_ECHO_REPLY) As Long
    Dim hPort As Long
    
    ' Se Inicia el Socket
    Call IniciandoSocket
    ' Se crea el puerto para enviar el ICMP
    hPort = IcmpCreateFile()
    ' Se realiza la llamada
    If IcmpSendEcho(hPort, ConvertirTextoAEntero(DirIP), TextoEnviar, Len(TextoEnviar), 0, EnvioICMP, Len(EnvioICMP), _
       PING_TIMEOUT) Then
        ' Respuesta correcta.
        Ping = EnvioICMP.RoundTripTime
    Else
        Ping = EnvioICMP.status * -1
    End If
    ' Se cierra el puerto
    Call IcmpCloseHandle(hPort)
    ' Se cierra el socket
    Call SocketsCleanup
End Function
Function ConvertirTextoAEntero(ByVal tmp As String) As Long
    Dim I As Integer
    Dim Parts(1 To 4) As String
    
    I = 0
    
    ' Extrae las 4 partes de la IP en un array
    While InStr(tmp, ".") > 0
       I = I + 1
       Parts(I) = Mid(tmp, 1, InStr(tmp, ".") - 1)
       tmp = Mid(tmp, InStr(tmp, ".") + 1)
    Wend
    
    I = I + 1
    Parts(I) = tmp
    
    If I <> 4 Then
       ConvertirTextoAEntero = 0
       Exit Function
    End If
    
    ' Construye la cadena en Hexadecimal para realizar la llamada
    ConvertirTextoAEntero = Val("&H" & Right("00" & Hex(Parts(4)), 2) & Right("00" & Hex(Parts(3)), 2) & _
                Right("00" & Hex(Parts(2)), 2) & Right("00" & Hex(Parts(1)), 2))
End Function
Function SocketsCleanup() As Boolean
    Dim X As Long
    
    ' Se cierra el socket
    X = WSACleanup()
    If X <> 0 Then
        MsgBox "Se ha producido el error " & Trim$(Str$(X)) & " al cerrar el Windows Sockets.", vbExclamation
        SocketsCleanup = False
    Else
        SocketsCleanup = True
    End If
End Function
Function IniciandoSocket() As Boolean
    Dim WSAD As WSADATA
    Dim X As Integer
    Dim szLoByte As String, szHiByte As String
    
    ' Se inicia el Socket para comunicaciones
    X = WSAStartup(WS_VERSION_REQD, WSAD)
    
    If X <> 0 Then
        MsgBox "El entorno de Windows Sockets para 32 bit Windows no responde."
        IniciandoSocket = False
        Exit Function
    End If
    
    If LoByte(WSAD.wVersion) < WS_VERSION_MAJOR Or (LoByte(WSAD.wVersion) = WS_VERSION_MAJOR And _
       HiByte(WSAD.wVersion) < WS_VERSION_MINOR) Then
        szHiByte = Trim$(Str$(HiByte(WSAD.wVersion)))
        szLoByte = Trim$(Str$(LoByte(WSAD.wVersion)))
        MsgBox "El entorno de Windows Sockets para 32 bit Windows no puede trabajar con la versión Windows Sockets " & _
        szLoByte & "." & szHiByte, vbExclamation
        IniciandoSocket = False
        Exit Function
    End If
    
    If WSAD.wMaxSockets < MIN_SOCKETS_REQD Then
        MsgBox "Esta aplicación requiere como minimo de " & Trim$(Str$(MIN_SOCKETS_REQD)) & " sockets.", vbExclamation
        IniciandoSocket = False
        Exit Function
    End If
    IniciandoSocket = True
End Function