bayasaa писал(а):сканирование одного IP займёт от 1 до 3 секунд
Const SOCKET_ERROR = 0
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
lpVendorInfo 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
Flags 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
Private Type T_Host
h_name As Long
h_aliases As Long
h_addrtype As Integer
h_length As Integer
h_addr_list As Long
End Type
Private Declare Function GetHostName Lib "wsock32.dll" Alias "gethostname" (ByVal hostname As String, HostLen As Long) As Long
Private Declare Function gethostbyaddr Lib "wsock32.dll" (addr As Long, ByVal addr_len As Long, ByVal addr_type As Long) As Long
Private 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
Private Declare Function lstrlenA Lib "kernel32" (ByVal Ptr As Any) As Long
Private Declare Function inet_addr Lib "wsock32.dll" (ByVal addr As String) As Long
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
Dim a As String
Dim i As Integer
Dim host As String
Call WSAStartup(&H101, lpWSAdata)
'Call WSAStartup(&H101, lpWSAdata)
hostname = router.Text
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"
Exit Sub
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))
End If
If EchoReply.Status = 0 Then
MsgBox "Reply from " + HostName + " (" + rIP + ") recieved after " + Trim$(CStr(EchoReply.RoundTripTime)) + "ms"
MsgBox "есть в сети"
Else
MsgBox "нет в сети"
End If
Andrev писал(а):Большинство нормальных сканеров работают в многопоточном режиме, что в ВБ нереализуемо.
ANDLL писал(а):Можно подумать, многопоточность возьмет и волшебным образом расширит канал связи... Или заставит удаленный компьютер отвечать быстрее.
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