'模块代码. Public MyIP As StringPrivate 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 = 128Private Type ICMP_OPTIONS Ttl As Byte Tos As Byte Flags As Byte OptionsSize As Byte OptionsData As Long End TypePublic Type ICMP_ECHO_REPLY Address As Long status As Long RoundTripTime As Long DataSize As Long '注释：formerly integer '注释: Reserved As Integer DataPointer As Long Options As ICMP_OPTIONS Data As String * 250 End TypePrivate 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 TypePrivate Declare Function IcmpCreateFile Lib "icmp.dll" () 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 Declare Function WSAGetLastError Lib "WSOCK32.DLL" () As Long Private Declare Function WSAStartup Lib "WSOCK32.DLL" (ByVal wVersionRequired As Long, lpWSADATA As WSADATA) As Long Private Declare Function WSACleanup Lib "WSOCK32.DLL" () As Long Private Declare Function gethostname Lib "WSOCK32.DLL" (ByVal szHost As String, ByVal dwHostLen As Long) As Long Private Declare Function gethostbyname Lib "WSOCK32.DLL" (ByVal szHost 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 inet_addr Lib "WSOCK32.DLL" (ByVal s As String) As LongPublic Function GetStatusCode(status As Long) As StringDim msg As StringSelect 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 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 SelectGetStatusCode = CStr(status) & " [ " & msg & " ]" End FunctionPublic Function Pings(sAddress As String, sDataToSend As String, ECHO As ICMP_ECHO_REPLY) As LongDim hPort As Long Dim dwAddress As Long '注释：convert the address into a long representation dwAddress = inet_addr(sAddress)'注释：if a valid address.. If dwAddress <> INADDR_NONE Then '注释：open a port hPort = IcmpCreateFile() '注释：and if successful, If hPort Then '注释：ping it. Call IcmpSendEcho(hPort, dwAddress, sDataToSend, Len(sDataToSend), 0, ECHO, Len(ECHO), PING_TIMEOUT) '注释：return the status as ping succes and close Pings = ECHO.status Call IcmpCloseHandle(hPort) End If Else: '注释：the address format was probably invalid Pings = INADDR_NONE End If End Function Public Sub SocketsCleanup() If WSACleanup() <> 0 Then MsgBox "Windows Sockets error occurred in Cleanup.", vbExclamation End If End Sub Public Function SocketsInitialize() As Boolean Dim WSAD As WSADATA SocketsInitialize = WSAStartup(WS_VERSION_REQD, WSAD) = IP_SUCCESS End Function '窗体的代码. Private Sub Command1_Click() Dim ECHO As ICMP_ECHO_REPLY Dim pos As Long Dim success As LongIf SocketsInitialize() Then Label1.Caption = "" success = Pings("192.168.1.11", MyIP, ECHO) If success = 0 Then Label1.Caption = "PING通" Else Label1.Caption = "不能通" End If SocketsCleanup End If End Sub
Public MyIP As StringPrivate 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 = 128Private Type ICMP_OPTIONS
Ttl As Byte
Tos As Byte
Flags As Byte
OptionsSize As Byte
OptionsData As Long
End TypePublic Type ICMP_ECHO_REPLY
Address As Long
status As Long
RoundTripTime As Long
DataSize As Long '注释：formerly integer
'注释: Reserved As Integer
DataPointer As Long
Options As ICMP_OPTIONS
Data As String * 250
End TypePrivate 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 TypePrivate Declare Function IcmpCreateFile Lib "icmp.dll" () 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 Declare Function WSAGetLastError Lib "WSOCK32.DLL" () As Long
Private Declare Function WSAStartup Lib "WSOCK32.DLL" (ByVal wVersionRequired As Long, lpWSADATA As WSADATA) As Long
Private Declare Function WSACleanup Lib "WSOCK32.DLL" () As Long
Private Declare Function gethostname Lib "WSOCK32.DLL" (ByVal szHost As String, ByVal dwHostLen As Long) As Long
Private Declare Function gethostbyname Lib "WSOCK32.DLL" (ByVal szHost 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 inet_addr Lib "WSOCK32.DLL" (ByVal s As String) As LongPublic Function GetStatusCode(status As Long) As StringDim msg As StringSelect 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 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 SelectGetStatusCode = CStr(status) & " [ " & msg & " ]"
End FunctionPublic Function Pings(sAddress As String, sDataToSend As String, ECHO As ICMP_ECHO_REPLY) As LongDim hPort As Long
Dim dwAddress As Long
'注释：convert the address into a long representation
dwAddress = inet_addr(sAddress)'注释：if a valid address..
If dwAddress <> INADDR_NONE Then
'注释：open a port
hPort = IcmpCreateFile()
'注释：and if successful,
If hPort Then
'注释：ping it.
Call IcmpSendEcho(hPort, dwAddress, sDataToSend, Len(sDataToSend), 0, ECHO, Len(ECHO), PING_TIMEOUT)
'注释：return the status as ping succes and close
Pings = ECHO.status
Call IcmpCloseHandle(hPort)
End If
Else:
'注释：the address format was probably invalid
Pings = INADDR_NONE
End If
End Function
Public Sub SocketsCleanup()
If WSACleanup() <> 0 Then
MsgBox "Windows Sockets error occurred in Cleanup.", vbExclamation
End If
End Sub
Public Function SocketsInitialize() As Boolean
Dim WSAD As WSADATA
SocketsInitialize = WSAStartup(WS_VERSION_REQD, WSAD) = IP_SUCCESS
End Function
'窗体的代码.
Private Sub Command1_Click()
Dim ECHO As ICMP_ECHO_REPLY
Dim pos As Long
Dim success As LongIf SocketsInitialize() Then
Label1.Caption = ""
success = Pings("192.168.1.11", MyIP, ECHO)
If success = 0 Then
Label1.Caption = "PING通"
Else
Label1.Caption = "不能通"
End If
SocketsCleanup
End If
End Sub