检查一下 Ping 操作是否成功就行了。
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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 = 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
formerly As Integer
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 SocketsInitialize() As Boolean
Dim WSAD As WSADATA
SocketsInitialize = WSAStartup(WS_VERSION_REQD, WSAD) = IP_SUCCESS
End FunctionPublic Sub SocketsCleanup()
If WSACleanup() <> 0 Then
MsgBox "Windows Sockets error occurred in Cleanup.", vbExclamation
End If
End SubPublic Function Ping(sAddress As String, sDataToSend As String, ECHO As ICMP_ECHO_REPLY) As String
Dim hPort As Long, dwAddress As Long, rc 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)
rc = ECHO.Status
Call IcmpCloseHandle(hPort)
End If
Else
rc = INADDR_NONE
End If
Select Case rc
Case IP_SUCCESS: Ping = "Ping操作执行成功"
Case INADDR_NONE: Ping = "错误的IP地址"
Case IP_BUF_TOO_SMALL: Ping = "IP缓冲太小"
Case IP_DEST_NET_UNREACHABLE: Ping = "IP包不能达到目标网络"
Case IP_DEST_HOST_UNREACHABLE: Ping = "IP包不能到达目标主机"
Case IP_DEST_PROT_UNREACHABLE: Ping = "ip dest prot unreachable"
Case IP_DEST_PORT_UNREACHABLE: Ping = "IP包不能到达目标端口"
Case IP_NO_RESOURCES: Ping = "没有IP资源"
Case IP_BAD_OPTION: Ping = "错误的IP选项"
Case IP_HW_ERROR: Ping = "网络物理连接发现故障"
Case IP_PACKET_TOO_BIG: Ping = "发送的IP包太大"
Case IP_REQ_TIMED_OUT: Ping = "请求超时"
Case IP_BAD_REQ: Ping = "错误的IP请求"
Case IP_BAD_ROUTE: Ping = "错误的IP路由"
Case IP_TTL_EXPIRED_TRANSIT: Ping = "ip ttl expired transit"
Case IP_TTL_EXPIRED_REASSEM: Ping = "ip ttl expired reassem"
Case IP_PARAM_PROBLEM: Ping = "ip param_problem"
Case IP_SOURCE_QUENCH: Ping = "ip source quench"
Case IP_OPTION_TOO_BIG: Ping = "IP选项太多"
Case IP_BAD_DESTINATION: Ping = "错误的目标IP地址"
Case IP_ADDR_DELETED: Ping = "IP地址已经删除"
Case IP_SPEC_MTU_CHANGE: Ping = "ip spec mtu change"
Case IP_MTU_CHANGE: Ping = "ip mtu_change"
Case IP_UNLOAD: Ping = "ip unload"
Case IP_ADDR_ADDED: Ping = "IP地址已经添加"
Case IP_GENERAL_FAILURE: Ping = "ip general failure"
Case IP_PENDING: Ping = "ip pending"
Case PING_TIMEOUT: Ping = "Ping超时"
Case Else: Ping = "返回了未知的错误信息"
End Select
End Function
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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 = 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
formerly As Integer
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 SocketsInitialize() As Boolean
Dim WSAD As WSADATA
SocketsInitialize = WSAStartup(WS_VERSION_REQD, WSAD) = IP_SUCCESS
End FunctionPublic Sub SocketsCleanup()
If WSACleanup() <> 0 Then
MsgBox "Windows Sockets error occurred in Cleanup.", vbExclamation
End If
End SubPublic Function Ping(sAddress As String, sDataToSend As String, ECHO As ICMP_ECHO_REPLY) As String
Dim hPort As Long, dwAddress As Long, rc 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)
rc = ECHO.Status
Call IcmpCloseHandle(hPort)
End If
Else
rc = INADDR_NONE
End If
Select Case rc
Case IP_SUCCESS: Ping = "Ping操作执行成功"
Case INADDR_NONE: Ping = "错误的IP地址"
Case IP_BUF_TOO_SMALL: Ping = "IP缓冲太小"
Case IP_DEST_NET_UNREACHABLE: Ping = "IP包不能达到目标网络"
Case IP_DEST_HOST_UNREACHABLE: Ping = "IP包不能到达目标主机"
Case IP_DEST_PROT_UNREACHABLE: Ping = "ip dest prot unreachable"
Case IP_DEST_PORT_UNREACHABLE: Ping = "IP包不能到达目标端口"
Case IP_NO_RESOURCES: Ping = "没有IP资源"
Case IP_BAD_OPTION: Ping = "错误的IP选项"
Case IP_HW_ERROR: Ping = "网络物理连接发现故障"
Case IP_PACKET_TOO_BIG: Ping = "发送的IP包太大"
Case IP_REQ_TIMED_OUT: Ping = "请求超时"
Case IP_BAD_REQ: Ping = "错误的IP请求"
Case IP_BAD_ROUTE: Ping = "错误的IP路由"
Case IP_TTL_EXPIRED_TRANSIT: Ping = "ip ttl expired transit"
Case IP_TTL_EXPIRED_REASSEM: Ping = "ip ttl expired reassem"
Case IP_PARAM_PROBLEM: Ping = "ip param_problem"
Case IP_SOURCE_QUENCH: Ping = "ip source quench"
Case IP_OPTION_TOO_BIG: Ping = "IP选项太多"
Case IP_BAD_DESTINATION: Ping = "错误的目标IP地址"
Case IP_ADDR_DELETED: Ping = "IP地址已经删除"
Case IP_SPEC_MTU_CHANGE: Ping = "ip spec mtu change"
Case IP_MTU_CHANGE: Ping = "ip mtu_change"
Case IP_UNLOAD: Ping = "ip unload"
Case IP_ADDR_ADDED: Ping = "IP地址已经添加"
Case IP_GENERAL_FAILURE: Ping = "ip general failure"
Case IP_PENDING: Ping = "ip pending"
Case PING_TIMEOUT: Ping = "Ping超时"
Case Else: Ping = "返回了未知的错误信息"
End Select
End Function
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