Sección de controles Ocx para Visual basic , Dll , Activex

54 - Dll para hacer Ping y trace a un dominio

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Esta Dll Activex permite hacer un Ping y un Trace a un dominio y ver los resultados en un control textBox o Label

 

La Dll tiene 2 métodos, uno llamado Ping y otro Trace.

 

Estos 2 tienen un parámetro en el cual se le debe enviar un control para mostrar el resultado, puede ser un control TextBox o Label. En el ejemplo , se le envía un textbox con el Multiline en True

Antes de ejecutar estos métodos, hay que indicar algunas propiedades, como el nombre del Host (propiedad NombreHost), el número de paquetes a enviar (propiedad nPaquetes) y si queremos obtener la Ip del dominio se debe consultar la propiedad IPHost

 

 

 

vista previa del ejemplo

Vista del ejemplo en visual basic para realizar un ping y un trace a un dominio o host

 

 

Descargar Dll

Click acá para ver el código fuente

 


Acá hay otro código fuente para hacer un ping a una dirección Ip y ver los milisegundos de respuesta y el estado

Nota: En Este ejemplo, a la función que realiza el ping, debe ser la dirección Ip y no el nombre del Host. En este otro enlace podés ver una forma de recuperar el nombre a partir de la dirección IP : Obtener la dirección IP a partir del nombre de Dominio

 

Pasos para crear el ejemplo

Colocar en el formulario un control Textbox y un CommandButton.

 

vista del formulario para hacer el ping a la direccion ip

 

Código fuente en el formulario

Option Explicit



' botón que realiza el Ping
''''''''''''''''''''''''''''''''''''''''''
Private Sub Command1_Click()
    ' estructura con la información para hacer el Ping
    Dim ECHO As ICMP_ECHO_REPLY
    Dim TargetIP As String ' dirección ip
    Dim Ret As String
    
    TargetIP = Text1
    
    If Len(TargetIP) > 0 Then
        
        ' hace el Ping
        '''''''''''''''''''''''''''''''''''''''''''''''''''
        Call Ping(TargetIP, ECHO)
        
        ' muestra los resultados
        '''''''''''''''''''''''''''''''''''''''''''''''''''
        Ret = "Dirección: " & TargetIP & vbNewLine
        
        ' Estado del Ping
        Ret = Ret & "Status: " & ECHO.status & vbNewLine
        If ECHO.status = 0 Then
            Ret = Ret & "Mensaje: " & "Successful" & vbNewLine
            Ret = Ret & "Tiempo: " & ECHO.RoundTripTime & " ms" & vbNewLine
        Else
            ' error al hacer ping
            Ret = Ret & "Mensaje: " & "Not successful" & vbNewLine
        End If
        
        Ret = Ret & "DataSize: " & ECHO.DataSize & " bytes"
    Else
        ' error
        Ret = Ret & "Mensaje: " & "Not successful" & vbNewLine
    End If
        
        MsgBox Ret, vbInformation
        
End Sub

Private Sub Form_Load()
    Text1.Text = "64.233.161.104"
    Command1.Caption = " Hacer ping "
End Sub  

 

Ahora agregar un módulo bas y el siguiente código fuente:

Option Explicit

Public msg As String

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 = 400 'default was 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


Public Declare Function IcmpCreateFile Lib "icmp.dll" () As Long

Public Declare Function IcmpCloseHandle Lib "icmp.dll" _
   (ByVal IcmpHandle As Long) As Long
   
Public 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
    
Public Declare Function WSAGetLastError Lib "WSOCK32.DLL" () As Long

Public Declare Function WSAStartup Lib "WSOCK32.DLL" _
   (ByVal wVersionRequired As Long, _
    lpWSADATA As WSADATA) As Long
    
Public Declare Function WSACleanup Lib "WSOCK32.DLL" () As Long

Public Declare Function gethostname Lib "WSOCK32.DLL" _
   (ByVal szHost As String, _
    ByVal dwHostLen As Long) As Long
    
'Public Declare Function gethostbyname Lib "WSOCK32.DLL" _
   (ByVal szHost As String) As Long
   
Private Declare Function gethostbyname Lib "wsock32" _
  (ByVal Hostname As String) As Long
   
Public Declare Sub RtlMoveMemory Lib "kernel32" _
   (hpvDest As Any, _
    ByVal hpvSource As Long, _
    ByVal cbCopy As Long)

Private Declare Sub CopyMemory Lib "kernel32" _
   Alias "RtlMoveMemory" _
  (xDest As Any, _
   xSource As Any, _
   ByVal nbytes As Long)

Public Function GetStatusCode(status As Long) As String

   
   Select Case status
      Case IP_SUCCESS:               msg = "ip success"
      Case IP_BUF_TOO_SMALL:         msg = "ip buf too_small"
      Case IP_DEST_NET_UNREACHABLE:  msg = "ip dest net unreachable"
      Case IP_DEST_HOST_UNREACHABLE: msg = "ip dest host unreachable"
      Case IP_DEST_PROT_UNREACHABLE: msg = "ip dest prot unreachable"
      Case IP_DEST_PORT_UNREACHABLE: msg = "ip dest port unreachable"
      Case IP_NO_RESOURCES:          msg = "ip no resources"
      Case IP_BAD_OPTION:            msg = "ip bad option"
      Case IP_HW_ERROR:              msg = "ip hw_error"
      Case IP_PACKET_TOO_BIG:        msg = "ip packet too_big"
      Case IP_REQ_TIMED_OUT:         msg = "ip req timed out"
      Case IP_BAD_REQ:               msg = "ip bad req"
      Case IP_BAD_ROUTE:             msg = "ip bad route"
      Case IP_TTL_EXPIRED_TRANSIT:   msg = "ip ttl expired transit"
      Case IP_TTL_EXPIRED_REASSEM:   msg = "ip ttl expired reassem"
      Case IP_PARAM_PROBLEM:         msg = "ip param_problem"
      Case IP_SOURCE_QUENCH:         msg = "ip source quench"
      Case IP_OPTION_TOO_BIG:        msg = "ip option too_big"
      Case IP_BAD_DESTINATION:       msg = "ip bad destination"
      Case IP_ADDR_DELETED:          msg = "ip addr deleted"
      Case IP_SPEC_MTU_CHANGE:       msg = "ip spec mtu change"
      Case IP_MTU_CHANGE:            msg = "ip mtu_change"
      Case IP_UNLOAD:                msg = "ip unload"
      Case IP_ADDR_ADDED:            msg = "ip addr added"
      Case IP_GENERAL_FAILURE:       msg = "ip general failure"
      Case IP_PENDING:               msg = "ip pending"
      Case PING_TIMEOUT:             msg = "ping timeout"
      Case Else:                     msg = "unknown  msg returned"
   End Select
   
   GetStatusCode = CStr(status)
   
End Function


Public Function HiByte(ByVal wParam As Integer)

    HiByte = wParam \ &H100 And &HFF&

End Function


Public Function LoByte(ByVal wParam As Integer)

    LoByte = wParam And &HFF&

End Function


Public Function Ping(szAddress As String, ECHO As ICMP_ECHO_REPLY) As Long

   Dim hPort As Long
   Dim dwAddress As Long
   Dim sDataToSend As String
   Dim iOpt As Long
   
   sDataToSend = "Echo This"
   dwAddress = AddressStringToLong(szAddress)
   
   Call SocketsInitialize
   hPort = IcmpCreateFile()
   
   If IcmpSendEcho(hPort, _
                   dwAddress, _
                   sDataToSend, _
                   Len(sDataToSend), _
                   0, _
                   ECHO, _
                   Len(ECHO), _
                   PING_TIMEOUT) Then
   

         Ping = ECHO.RoundTripTime
   Else: Ping = ECHO.status * -1
   End If
                       
   Call IcmpCloseHandle(hPort)
   Call SocketsCleanup
   
End Function
   

Function AddressStringToLong(ByVal tmp As String) As Long

   Dim i As Integer
   Dim parts(1 To 4) As String
   
   i = 0
   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
      AddressStringToLong = 0
      Exit Function
   End If
   AddressStringToLong = 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


Public Function SocketsCleanup() As Boolean

    Dim X As Long
    
    X = WSACleanup()
    
    If X <> 0 Then
        MsgBox "Windows Sockets error " & Trim$(Str$(X)) & _
               " occurred in Cleanup.", vbExclamation
        SocketsCleanup = False
    Else
        SocketsCleanup = True
    End If
    
End Function


Public Function SocketsInitialize() As Boolean

    Dim WSAD As WSADATA
    Dim X As Integer
    Dim szLoByte As String, szHiByte As String, szBuf As String
    
    X = WSAStartup(WS_VERSION_REQD, WSAD)
    
    If X <> 0 Then
        MsgBox "Windows Sockets for 32 bit Windows " & _
               "environments is not successfully responding."
        SocketsInitialize = 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)))
        szBuf = "Windows Sockets Version " & szLoByte & "." & szHiByte
        szBuf = szBuf & " is not supported by Windows " & _
                          "Sockets for 32 bit Windows environments."
        MsgBox szBuf, vbExclamation
        SocketsInitialize = False
        Exit Function
        
    End If
    
    If WSAD.wMaxSockets < MIN_SOCKETS_REQD Then
        szBuf = "This application requires a minimum of " & _
                 Trim$(Str$(MIN_SOCKETS_REQD)) & " supported sockets."
        MsgBox szBuf, vbExclamation
        SocketsInitialize = False
        Exit Function
    End If
    
    SocketsInitialize = True
        
End Function
 

 

 

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