Today, I saw a colleague to write a ping program, I wrote a ping function, huh, huh, I posted it here, the comrades I want "shear",
It is a small gift I gave everyone!
Photo: PING
Figure: PING failed
The following is the source code (VB6): (perfect error control, so it is a good function)
Option expedition
Private Const IP_SUCCESS As Long = 0Private Const IP_STATUS_BASE As Long = 11000Private 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) Pr ivate 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 =
500Private Const WS_VERSION_REQD As Long = & H101Private Const MIN_SOCKETS_REQD As Long = 1Private Const SOCKET_ERROR As Long = -1Private Const INADDR_NONE As Long = & HFFFFFFFFPrivate Const MAX_WSADescription As Long = 256Private Const MAX_WSASYSStatus As Long = 128Private Type ICMP_OPTIONS Ttl As Byte Tos As Byte Flags As Byte OptionsSize AS BYTE OPTIONSDATA AS LONGEND TYPE
PRIVATE ICMP_ECHO_REPLY Address AS Long Statasize As Long DataPointer As Long Options as ICMP_OPTIONS DATA AS STRING * 2500END 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 LongEnd Type
Private Declare Function IcmpCreateFile Lib "icmp.dll" () As LongPrivate Declare Function IcmpCloseHandle Lib "icmp.dll" (ByVal IcmpHandle As Long) As LongPrivate 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 LongPrivate Declare Function WSAGetLastError Lib "wsock32" () As LongPrivate Declare Function WSAStartup Lib "wsock32" (ByVal wVersionRequired As Long, lpWSADATA As WSADATA) As LongPrivate Declare Function WSACleanup Lib "wsock32" () As LongPrivate Declare Function gethostname Lib "wsock32" (ByVal szHost As String, ByVal dwHostLen As Long) As LongPrivate Declare Function gethostbyname Lib "wsock32" (Byval Szhost As String) As longprivate declare sub copyMemory LIB "kernel32" Alias "RTLMoveMemory" (xDest as any, xsource as any, byval nbytes as long) private Declare Function inet_addr Lib "wsock32" (ByVal s As String) As Long Private Function GetStatusCode (status As Long) As String On Error GoTo Z Dim Msg As String 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 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 = Msg Exit FunctionZ: GetStatusCode =" "End FunctionPrivate Function Ping (sAddress As String, sDataToSend As String, ECHO As ICMP_ECHO_REPLY) As Long On Error GoTo Z 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) endiff = inceth = INADDR_NONE ENDDR_NONEEND FUNCTION
'(Ping function)' Parameters: target IP address' Return value: There is return True, otherwise FalsePublic Function PingIp (ByVal szIp As String) As Boolean On Error GoTo Z Dim WSAD As WSADATA Dim ECHO As ICMP_ECHO_REPLY Dim ret As Long If WSAStartup (Ws_version_reqd, wsad) = IP_Success Ten Ret = ping (Trim (Szip), "Tanaya", Echo) IF INSTR (1, GetStatuscode (RET), "Success") <> 0 THEN WSACLEANUP PINGIP = TRUE EXIT FUNCTION END IF END IF pingip = false exit functionz: pingip = false film
Will Delphi friends can transplant this module, very simple, not knocking on the keyboard.
'-------------------------------------------' Please indicate the source 'author: Don just fine' E-mail: tanaya@163.com '------------------------------------- --------
