Cek IP Adress Orang Lain
Untuk tulisan kali ini disajikan bagaimana cara pembuatan aplikasi yang berfungsi untuk mengetahui status aktif atau tidak akltif dari Komputer tetangga dengan melakukan pencarian IP Adress.Siapa tahu dengan kita mengetahui IP Adress komputer tetangga, kita dapat mencari file, melakukan Shutdown ataupun tujuan positif lainnya he..he..'Yang dibutuhkan dalam pembuatan aplikasi kali ini adalah :'- 1 listbox dengan properties name List1'- 2 textbox dengan propertie name Text1 dan Text2'- 2 commandbutton dengan properties name Command1 dan Command2'- 2 label dengan properties name label1, properties Caption="Cek IP Aktif dari" dan label2 dengan properties caption="Sampai''Masukkan code di bawah ini pada form
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Option ExplicitConst
SOCKET_ERROR = 0Private Declare Function GetHostByName Lib "wsock32.dll" Alias "gethostbyname" (ByVal HostName As String) As Long
Private Declare Function WSAStartup Lib "wsock32.dll" (ByVal wVersionRequired&, lpWSAdata As WSAdata) As Long
Private Declare Function WSACleanup Lib "wsock32.dll" () As Long
Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (hpvdest As Any, hpvSource As Any, ByVal cbCopy As Long)
Private Declare Function IcmpCreateFile Lib "icmp.dll" () As Long
Private Declare Function IcmpCloseHandle Lib "icmp.dll" (ByVal HANDLE As Long) As Boolean
Private Declare Function IcmpSendEcho Lib "ICMP" (ByVal IcmpHandle As Long, ByVal DestAddress As Long, ByVal RequestData As String, ByVal RequestSize As Integer, RequestOptns As IP_OPTION_INFORMATION, ReplyBuffer As IP_ECHO_REPLY, ByVal ReplySize As Long, ByVal TimeOut As Long) As Boolean
'''type data tambahan
Private Type WSAdata wVersion As Integer wHighVersion As Integer szDescription(0 To 255) As Byte szSystemStatus(0 To 128) As Byte iMaxSockets As Integer iMaxUdpDg As Integer ipVendorInfo As Long
End Type
Private Type Hostent h_name As Long h_aliases As Long h_addrtype As Integer h_length As Integer h_addr_list As Long
End Type
Private Type IP_OPTION_INFORMATION TTL As Byte Tos As Byte Flage As Byte OptionsSize As Long OptionsData As String * 128
End Type
Private Type IP_ECHO_REPLY Address(0 To 3) As Byte Status As Long RoundTripTime As Long DataSize As Integer Reserved As Integer data As Long Options As IP_OPTION_INFORMATION
End Type
Public dir As String
'''berikut source kode fungsi yang diperlukan
Public Function doPing(ByVal HostName As String) As Boolean
Dim hFile As Long, lpWSAdata As WSAdata
Dim hHostent As Hostent, AddrList As Long
Dim Address As Long, rIP As String
Dim OptInfo As IP_OPTION_INFORMATION
Dim EchoReply As IP_ECHO_REPLY
Call WSAStartup(&H101, lpWSAdata)
If GetHostByName(HostName + String(64 - Len(HostName), 0)) <> SOCKET_ERROR Then CopyMemory hHostent.h_name, ByVal GetHostByName(HostName + String(64 - Len(HostName), 0)), Len(hHostent) CopyMemory AddrList, ByVal hHostent.h_addr_list, 4 CopyMemory Address, ByVal AddrList, 4
End If
hFile = IcmpCreateFile() If hFile = 0 Then MsgBox " Unable to create file handle", vbCritical + vbOKOnly doPing = False
Exit Function
End If
OptInfo.TTL = 255
If IcmpSendEcho(hFile, Address, String(32, "A"), 32, OptInfo, EchoReply, Len(EchoReply) + 8, 2000) Then rIP = CStr(EchoReply.Address(0)) + "." + CStr(EchoReply.Address(1)) + "." + CStr(EchoReply.Address(2)) + "." + CStr(EchoReply.Address(3)) Else doPing = False
End If
If EchoReply.Status = 0 Then doPing = True Else doPing = False
End If
Call IcmpCloseHandle(hFile)
Call WSACleanup
End Function
Private Sub Command1_Click()
Dim i As Integer
Dim x, yDim result As Boolean
Dim resultString As String
If Trim(Text1) = "" ThenMsgBox "Isikan Alamat IP", vbCritical + vbOKOnlyText1.SetFocusExit Sub
End If
If Trim(Text2) = "" Then
MsgBox "Isikan Batasan/Range Alamat IP", vbCritical + vbOKOnlyText2.SetFocus
Exit Sub
End If
List1.Clear
x = Split(Text1.Text, ".")
y = Split(Text2.Text, ".")
For i = CInt(x(3)) To CInt(y(3))dir = x(0) & "." & x(1) & "." & x(2) & "." & iresult = doPing(dir)
If result = True Then
resultString = "Aktif"ElseresultString = "NonAktif"End IfList1.AddItem "Pinging " & dir & "..." & resultStringList1.RefreshNextEnd Sub
Private Sub Command2_Click()
List1.Clear
Text1.Text = ""
Text2.Text = ""
List1.Refresh
End Sub
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