VB示例代码 判断是否与某个IP建立连接
窗体代码:
'测试
Private Sub Form_Load()
If PingIP("122.22.255.255") Then
MsgBox "可以ping通"
Else
MsgBox "ping 不通"
End If
End Sub
模块代码：
Option Explicit
Private Const IP_SUCCESS As Long = 0
Private Const IP_STATUS_BASE As Long = 11000
Private Const IP_BUF_TOO_SMALL As Long = (11000 + 1)
Private Const IP_DEST_NET_UNREACHABLE As Long = (11000 + 2)
Private Const IP_DEST_HOST_UNREACHABLE As Long = (11000 + 3)
Private Const IP_DEST_PROT_UNREACHABLE As Long = (11000 + 4)
Private Const IP_DEST_PORT_UNREACHABLE As Long = (11000 + 5)
Private Const IP_NO_RESOURCES As Long = (11000 + 6)
Private Const IP_BAD_OPTION As Long = (11000 + 7)
Private Const IP_HW_ERROR As Long = (11000 + 8)
Private Const IP_PACKET_TOO_BIG As Long = (11000 + 9)
Private Const IP_REQ_TIMED_OUT As Long = (11000 + 10)
Private Const IP_BAD_REQ As Long = (11000 + 11)
Private Const IP_BAD_ROUTE As Long = (11000 + 12)
Private Const IP_TTL_EXPIRED_TRANSIT As Long = (11000 + 13)
Private Const IP_TTL_EXPIRED_REASSEM As Long = (11000 + 14)
Private Const IP_PARAM_PROBLEM As Long = (11000 + 15)
Private Const IP_SOURCE_QUENCH As Long = (11000 + 16)
Private Const IP_OPTION_TOO_BIG As Long = (11000 + 17)
Private Const IP_BAD_DESTINATION As Long = (11000 + 18)
Private Const IP_ADDR_DELETED As Long = (11000 + 19)
Private Const IP_SPEC_MTU_CHANGE As Long = (11000 + 20)
Private Const IP_MTU_CHANGE As Long = (11000 + 21)
Private Const IP_UNLOAD As Long = (11000 + 22)
Private Const IP_ADDR_ADDED As Long = (11000 + 23)
Private Const IP_GENERAL_FAILURE As Long = (11000 + 50)
Private Const MAX_IP_STATUS As Long = (11000 + 50)
Private Const IP_PENDING As Long = (11000 + 255)
Private Const PING_TIMEOUT As Long = 500
Private Const WS_VERSION_REQD As Long = &H101
Private Const MIN_SOCKETS_REQD As Long = 1
Private Const SOCKET_ERROR As Long = -1
Private Const INADDR_NONE As Long = &HFFFFFFFF
Private Const MAX_WSADescription As Long = 256
Private Const MAX_WSASYSStatus As Long = 128
Public PingTime As Long
Private Type ICMP_OPTIONS
Ttl As Byte
Tos As Byte
Flags As Byte
OptionsSize As Byte
OptionsData As Long
End Type
Private Type ICMP_ECHO_REPLY
Address As Long
status As Long
RoundTripTime As Long
DataSize As Long
DataPointer As Long
Options As ICMP_OPTIONS
Data As String * 250
End Type
Private 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
Public Declare Function timeGetTime Lib "winmm.dll" () As Long
Private Declare Function WSAStartup Lib "wsock32" (ByVal wVersionRequired As Long, lpWSADATA As WSADATA) As Long
Private Declare Function WSACleanup Lib "wsock32" () As Long
Private Declare Function IcmpCreateFile Lib "icmp.dll" () As Long
Private Declare Function inet_addr Lib "wsock32" (ByVal s As String) As Long
Private Declare Function IcmpCloseHandle Lib "icmp.dll" (ByVal IcmpHandle As Long) As Long
Private Declare Function IcmpSendEcho Lib "icmp.dll" (ByVal IcmpHandle As Long, ByVal DestinationAddress As Long, ByVal RequestData As String, ByVal RequestSize As Long, ByVal RequestOptions As Long, ReplyBuffer As ICMP_ECHO_REPLY, ByVal ReplySize As Long, ByVal Timeout As Long) As Long
Private Function GetStatusCode(status As Long) As String
On Error GoTo ErrLine
Dim Msg As String
GetStatusCode = ""
Select Case status
Case IP_SUCCESS
Msg = "ip success"
Case INADDR_NONE
Msg = "inet_addr: bad IP format"
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 port 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 = Msg
Exit Function
ErrLine:
End Function
Private Function Ping(sAddress As String, sDataToSend As String, ECHO As ICMP_ECHO_REPLY) As Long
On Error GoTo ErrLine
Dim hPort As Long
Dim dwAddress As Long
dwAddress = inet_addr(sAddress)
If dwAddress <> INADDR_NONE Then
hPort = IcmpCreateFile()
If hPort Then
Call IcmpSendEcho(hPort, dwAddress, sDataToSend, Len(sDataToSend), 0, ECHO, Len(ECHO), PING_TIMEOUT)
Ping = ECHO.status
Call IcmpCloseHandle(hPort)
End If
Else
Ping = INADDR_NONE
End If
Exit Function
ErrLine:
Ping = INADDR_NONE
End Function
Public Function PingIP(ByVal szIp As String) As Boolean
On Error GoTo ErrLine
Dim WSAD As WSADATA
Dim ECHO As ICMP_ECHO_REPLY
Dim ret As Long
'Delay 150
PingIP = False
PingTime = Empty
If WSAStartup(WS_VERSION_REQD, WSAD) = IP_SUCCESS Then
ret = Ping(Trim$(szIp), "tanaya", ECHO)
PingTime = ECHO.RoundTripTime
If InStr(1, GetStatusCode(ret), "success") <> 0 Then
WSACleanup
PingIP = True
PingTime = ECHO.RoundTripTime
Exit Function
End If
End If
Exit Function
ErrLine:
End Function
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版权声明：本文为CSDN博主「miaozk2006」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/miaozk2006/article/details/82417039
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