如何 得到 域名的IP

[Tursun]

如何用VB得到一个域名的IP地址.

谢谢

[hisofty]

'Example Name: How to Resolve a Hostname Into an IP Address

'------------------------------------------------------------------------------
'
' BAS Moduel Code
'
'------------------------------------------------------------------------------

Option Explicit

Public Const IP_SUCCESS As Long = 0
Public Const MAX_WSADescription As Long = 256
Public Const MAX_WSASYSStatus As Long = 128
Public Const WS_VERSION_REQD As Long = &H101
Public Const WS_VERSION_MAJOR As Long = WS_VERSION_REQD \ &H100 And &HFF&
Public Const WS_VERSION_MINOR As Long = WS_VERSION_REQD And &HFF&
Public Const MIN_SOCKETS_REQD As Long = 1
Public Const SOCKET_ERROR As Long = -1

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 Long
wMaxUDPDG As Long
dwVendorInfo As Long
End Type

Private Declare Function gethostbyname Lib "wsock32" _
(ByVal hostname As String) As Long

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

Private Declare Function lstrlenA Lib "kernel32" _
(lpString As Any) As Long

Public Declare Function WSAStartup Lib "wsock32" _
(ByVal wVersionRequired As Long, _
lpWSADATA As WSADATA) As Long

Public Declare Function WSACleanup Lib "wsock32" () As Long


Public Function SocketsInitialize() As Boolean

Dim WSAD As WSADATA
Dim success As Long

SocketsInitialize = WSAStartup(WS_VERSION_REQD, WSAD) = IP_SUCCESS

End Function


Public Sub SocketsCleanup()

If WSACleanup() <> 0 Then
MsgBox "Windows Sockets error occurred in Cleanup.", vbExclamation
End If

End Sub


Public Function GetIPFromHostName(ByVal sHostName As String) As String

'converts a host name to an IP address.

Dim nbytes As Long
Dim ptrHosent As Long
Dim ptrName As Long
Dim ptrAddress As Long
Dim ptrIPAddress As Long
Dim sAddress As String

sAddress = Space$(4)

ptrHosent = gethostbyname(sHostName & vbNullChar)

If ptrHosent <> 0 Then

ptrAddress = ptrHosent + 12

'get the IP address
CopyMemory ptrAddress, ByVal ptrAddress, 4
CopyMemory ptrIPAddress, ByVal ptrAddress, 4
CopyMemory ByVal sAddress, ByVal ptrIPAddress, 4

GetIPFromHostName = IPToText(sAddress)

End If

End Function


Private Function IPToText(ByVal IPAddress As String) As String

IPToText = CStr(Asc(IPAddress)) & "." & _
CStr(Asc(Mid$(IPAddress, 2, 1))) & "." & _
CStr(Asc(Mid$(IPAddress, 3, 1))) & "." & _
CStr(Asc(Mid$(IPAddress, 4, 1)))

End Function
'--end block--'

'------------------------------------------------------------------------------
'
' Form Code
'
'------------------------------------------------------------------------------

Private Sub Command1_Click()

Dim sHostName As String

If SocketsInitialize() Then

'pass the host address to the function
sHostName = Text1.Text
Text2.Text = GetIPFromHostName(sHostName)

SocketsCleanup

Else

MsgBox "Windows Sockets for 32 bit Windows " & _
"is not successfully responding."

End If



End Sub

[online]

返回ping的结果

[Tursun]

vb 里怎么 用 Ping 啊 ?

能给出代码么？ 谢谢

[高高兴兴的晶晶]

是 shell 吗？

[online]

Option Explicit

Const SYNCHRONIZE = &H100000
Const INFINITE = &HFFFF
Const WAIT_OBJECT_0 = 0
Const WAIT_TIMEOUT = &H102

Private Declare Function SendMessage Lib "User32" Alias "SendMessageA" (ByVal hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Private Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredAccess As Long, ByVal bInheritHandle As Long, ByVal dwProcessId As Long) As Long
Private Declare Function WaitForSingleObject Lib "kernel32" (ByVal hHandle As Long, ByVal dwMilliseconds As Long) As Long
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long

Private Sub cmdClear_Click()
txtIP.Text = ""
txtNumber.Text = ""
Open "C:\log.txt" For Output As #1
Close #1
txtOutPut.Text = ""
End Sub

Private Sub cmdPing_Click()
Dim ShellX As String
Dim lPid As Long
Dim lHnd As Long
Dim lRet As Long
Dim VarX As String

frmMain.MousePointer = 11
If txtIP.Text <> "" Then
DoEvents
ShellX = Shell("command.com /c ping -n " & txtNumber.Text & " " & txtIP.Text & " > C:\log.txt", vbHide)

lPid = ShellX
If lPid <> 0 Then
lHnd = OpenProcess(SYNCHRONIZE, 0, lPid)
If lHnd <> 0 Then
lRet = WaitForSingleObject(lHnd, INFINITE)
CloseHandle (lHnd)
End If
Beep
frmMain.MousePointer = 0
Open "C:\log.txt" For Input As #1
txtOutPut.Text = Input(LOF(1), 1)
Close #1
End If
Else
frmMain.MousePointer = 0
VarX = MsgBox("You have not entered an ip address or the number of times you want to ping.", vbCritical, "Error has occured")
End If
End Sub

[Torsion]

Microsoft Internet Transfer 控件

StateChanged(ByVal State As Integer) 事件
State 的设置值：

常数 值 描述
icNone 0 无状态可报告。
icHostResolvingHost 1 该控件正在查询所指定的主机的 IP 地址。
icHostResolved 2 该控件已成功地找到所指定的主机的 IP 地址。
icConnecting 3 该控件正在与主机连接。
icConnected 4 该控件已与主机连接成功。
icRequesting 5 该控件正在向主机发送请求。
icRequestSent 6 该控件发送请求已成功。
icReceivingResponse 7 该控件正在接收主机的响应。
icResponseReceived 8 该控件已成功地接收到主机的响应。
icDisconnecting 9 该控件正在解除与主机的连接。
icDisconnected 10 该控件已成功地与主机解除了连接。
icError 11 与主机通讯时出现了错误。
icResponseCompleted 12 该请求已经完成，并且所有数据均已接收到。




不可以么?

[csdnexplore]

PING一个IP地址(向它发送一个数据包并等待回应)

本例演示了怎样通过API的调用向一个IP地址发送一个包的数据并等待回音。
新建一个工程，添加一个标准模块，写入以下代码：

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

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
Public Declare Sub RtlMoveMemory Lib "kernel32" (hpvDest As Any, ByVal hpvSource As Long, ByVal cbCopy As Long)

Public Function GetStatusCode(status As Long) As String

Dim msg 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) & " [ " & msg & " ]"
End Function

Public Function HiByte(ByVal wParam As Integer)
HiByte = wParam \ &H1 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)
hPort = IcmpCreateFile()
If IcmpSendEcho(hPort, dwAddress, sDataToSend, Len(sDataToSend), 0, ECHO, Len(ECHO), PING_TIMEOUT) Then
'the ping succeeded,
'.Status will be 0
'.RoundTripTime is the time in ms for the ping to complete,
'.Data is the data returned (NULL terminated)
'.Address is the Ip address that actually replied
'.DataSize is the size of the string in .Data
Ping = ECHO.RoundTripTime
Else
Ping = ECHO.status * -1
End If
Call IcmpCloseHandle(hPort)
End Function

[csdnexplore]

Function AddressStringToLong(ByVal tmp As String) As Long
Dim i As Integer
Dim parts(1 To 4) As String
i = 0
'we have to extract each part of the
'123.456.789.123 string, delimited by
'a period
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
'build the long value out of the
'hex of the extracted strings
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

在Form中添加一个命令按钮Command1，一个文本框Text2，创建一个TextBox数组(Text1(0)到Text1(5))。在窗体中写入如下代码：
Private Sub Command1_Click()
Dim ECHO As ICMP_ECHO_REPLY
Dim pos As Integer
Call Ping(Text2.Text, ECHO)
Text1(0) = GetStatusCode(ECHO.status)
Text1(1) = ECHO.Address
Text1(2) = ECHO.RoundTripTime & " ms"
Text1(3) = ECHO.DataSize & " bytes"
If Left$(ECHO.Data, 1) <> Chr$(0) Then
pos = InStr(ECHO.Data, Chr$(0))
Text1(4) = Left$(ECHO.Data, pos - 1)
End If
Text1(5) = ECHO.DataPointer
End Sub
看看有什么结果吧。

[csdnexplore]

Consult This Article:

在Vb中如何使用ping命令
http://www.sijiqing.com/vbgood/experience/index.asp?action=read&id=1543

[Tursun]

怎么不好用呢？

[csdnexplore]

Consult To This Article:

1 How to Ping an IP Address Using Visual Basic

http://vbnet.mvps.org/code/internet/ping.htm

2 Determining a Network Host Name and IP Address Using Visual Basic
http://vbnet.mvps.org/code/network/ipaddress.htm

[Tursun]

唉，这些都是局域网内的应用.

得不到 Internet 上的机器 IP.

[daisy8675]

ping 過去應該可以得到，隻需要在vb中監測就可以了
偶給不了代碼，上次全部掉了

[csdnexplore]

楼主到底要什么，我都晕倒了~~

[Torsion]

关注:

楼上的没看清楚么? 是“如何得到一个 域名 的 IP地址 ”。

你说的那两种是在局域网内查看 机器名 和 IP（Lan的）。

不知用 Inet控件可以么？有谁用过呢？我看MSDN给的例子没弄明白。

[quanquan626]

up

[flyingZFX]

up

[Tursun]

又用过 Inet 控件的么? 这个控件可以么?

MSDN 我没看明白.

多谢