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Tema: Hacer ping a una maquina (Leído 4,621 veces)
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icisneros
GNU/Linux
Ex-Staff
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Mensajes: 1.296
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Necesito saber si una máquina está encendida desde visual basic, algo así como hacerle un ping y ver si responde.
He usado la función IsDestinationReachable pero no me responde como debería.
Algun ejemplo detallado de ella o algun otro método?
He visto métodos de hacer ping en google pero son muy extensos para lo que yo quiero, no quiero hacer nada personal ni bonito, sólo saber si está encendida.
Saludos!!
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Mad Antrax
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Bueno, para hacer ping desde VB te recomiendo que bajes algun modulo o clase de ICMP (es muy sencillo de usar). Pero si lo que quieres es saber si un PC está encendido esa no es la mejor manera de saberlo. Windows XP trae el Firewall de XP activado por defecto, bloquea las peticiones de eco ICMP (el ping). Para saber si un PC esta encendido tendrás que buscar agun otro método Suerte
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No hago hacks/cheats para juegos Online. Tampoco ayudo a nadie a realizar hacks/cheats para juegos Online.
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icisneros
GNU/Linux
Ex-Staff
Desconectado
Mensajes: 1.296
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No tengo problema por que rechacen solicitudes echo de icmp, es para tener controlados mis servidores linux desde un cliente windows, y los servidores tengo aceptadas las peticiones de protocolo icmp en local por iptables, así que por eso no tengo problemas, buscaré algún modulo así.
Gracias tio!
Saludos!!
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icisneros
GNU/Linux
Ex-Staff
Desconectado
Mensajes: 1.296
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Al final la mejor solución ha sido la del módulo, he usado este, por si a alguien le interesa: Option Explicit
'Icmp constants converted from 'http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wmisdk/wmi/win32_pingstatus.asp
Private Const ICMP_SUCCESS As Long = 0 Private Const ICMP_STATUS_BUFFER_TO_SMALL = 11001 'Buffer Too Small Private Const ICMP_STATUS_DESTINATION_NET_UNREACH = 11002 'Destination Net Unreachable Private Const ICMP_STATUS_DESTINATION_HOST_UNREACH = 11003 'Destination Host Unreachable Private Const ICMP_STATUS_DESTINATION_PROTOCOL_UNREACH = 11004 'Destination Protocol Unreachable Private Const ICMP_STATUS_DESTINATION_PORT_UNREACH = 11005 'Destination Port Unreachable Private Const ICMP_STATUS_NO_RESOURCE = 11006 'No Resources Private Const ICMP_STATUS_BAD_OPTION = 11007 'Bad Option Private Const ICMP_STATUS_HARDWARE_ERROR = 11008 'Hardware Error Private Const ICMP_STATUS_LARGE_PACKET = 11009 'Packet Too Big Private Const ICMP_STATUS_REQUEST_TIMED_OUT = 11010 'Request Timed Out Private Const ICMP_STATUS_BAD_REQUEST = 11011 'Bad Request Private Const ICMP_STATUS_BAD_ROUTE = 11012 'Bad Route Private Const ICMP_STATUS_TTL_EXPIRED_TRANSIT = 11013 'TimeToLive Expired Transit Private Const ICMP_STATUS_TTL_EXPIRED_REASSEMBLY = 11014 'TimeToLive Expired Reassembly Private Const ICMP_STATUS_PARAMETER = 11015 'Parameter Problem Private Const ICMP_STATUS_SOURCE_QUENCH = 11016 'Source Quench Private Const ICMP_STATUS_OPTION_TOO_BIG = 11017 'Option Too Big Private Const ICMP_STATUS_BAD_DESTINATION = 11018 'Bad Destination Private Const ICMP_STATUS_NEGOTIATING_IPSEC = 11032 'Negotiating IPSEC Private Const ICMP_STATUS_GENERAL_FAILURE = 11050 'General Failure
Public Const WINSOCK_ERROR = "Windows Sockets not responding correctly." Public Const INADDR_NONE As Long = &HFFFFFFFF Public Const WSA_SUCCESS = 0 Public Const WS_VERSION_REQD As Long = &H101
'Clean up sockets. 'http://support.microsoft.com/default.aspx?scid=kb;EN-US;q154512
Private Declare Function WSACleanup Lib "WSOCK32.DLL" () As Long
'Open the socket connection. 'http://support.microsoft.com/default.aspx?scid=kb;EN-US;q154512 Private Declare Function WSAStartup Lib "WSOCK32.DLL" (ByVal wVersionRequired As Long, lpWSADATA As WSADATA) As Long
'Create a handle on which Internet Control Message Protocol (ICMP) requests can be issued. 'http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wcesdkr/htm/_wcesdk_icmpcreatefile.asp Private Declare Function IcmpCreateFile Lib "icmp.dll" () As Long
'Convert a string that contains an (Ipv4) Internet Protocol dotted address into a correct address. 'http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winsock/wsapiref_4esy.asp Private Declare Function inet_addr Lib "WSOCK32.DLL" (ByVal cp As String) As Long
'Close an Internet Control Message Protocol (ICMP) handle that IcmpCreateFile opens. 'http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wcesdkr/htm/_wcesdk_icmpclosehandle.asp
Private Declare Function IcmpCloseHandle Lib "icmp.dll" (ByVal IcmpHandle As Long) As Long
'Information about the Windows Sockets implementation 'http://support.microsoft.com/default.aspx?scid=kb;EN-US;q154512 Private Type WSADATA wVersion As Integer wHighVersion As Integer szDescription(0 To 256) As Byte szSystemStatus(0 To 128) As Byte iMaxSockets As Long iMaxUDPDG As Long lpVendorInfo As Long End Type
'Send an Internet Control Message Protocol (ICMP) echo request, and then return one or more replies. 'http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wcetcpip/htm/cerefIcmpSendEcho.asp 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 'This structure describes the options that will be included in the header of an IP packet. 'http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wcetcpip/htm/cerefIP_OPTION_INFORMATION.asp Private Type IP_OPTION_INFORMATION Ttl As Byte Tos As Byte Flags As Byte OptionsSize As Byte OptionsData As Long End Type
'This structure describes the data that is returned in response to an echo request. 'http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wcesdkr/htm/_wcesdk_icmp_echo_reply.asp Public Type ICMP_ECHO_REPLY address As Long Status As Long RoundTripTime As Long DataSize As Long Reserved As Integer ptrData As Long Options As IP_OPTION_INFORMATION Data As String * 250 End Type
'-- Ping a string representation of an IP address. ' -- Return a reply. ' -- Return long code. Public Function ping(sAddress As String, Reply As ICMP_ECHO_REPLY) As Long
Dim hIcmp As Long Dim lAddress As Long Dim lTimeOut As Long Dim StringToSend As String
'Short string of data to send StringToSend = "hello"
'ICMP (ping) timeout lTimeOut = 1000 'ms
'Convert string address to a long representation. lAddress = inet_addr(sAddress)
If (lAddress <> -1) And (lAddress <> 0) Then 'Create the handle for ICMP requests. hIcmp = IcmpCreateFile() If hIcmp Then 'Ping the destination IP address. Call IcmpSendEcho(hIcmp, lAddress, StringToSend, Len(StringToSend), 0, Reply, Len(Reply), lTimeOut)
'Reply status ping = Reply.Status 'Close the Icmp handle. IcmpCloseHandle hIcmp Else Debug.Print "failure opening icmp handle." ping = -1 End If Else ping = -1 End If
End Function
'Clean up the sockets. 'http://support.microsoft.com/default.aspx?scid=kb;EN-US;q154512 Public Sub SocketsCleanup() WSACleanup End Sub
'Get the sockets ready. 'http://support.microsoft.com/default.aspx?scid=kb;EN-US;q154512 Public Function SocketsInitialize() As Boolean
Dim WSAD As WSADATA
SocketsInitialize = WSAStartup(WS_VERSION_REQD, WSAD) = ICMP_SUCCESS
End Function
'Convert the ping response to a message that you can read easily from constants. 'For more information about these constants, visit the following Microsoft Web site: 'http://msdn.microsoft.com/library/default.asp?url=/library/en-us/wmisdk/wmi/win32_pingstatus.asp
Public Function EvaluatePingResponse(PingResponse As Long) As String
Select Case PingResponse 'Success Case ICMP_SUCCESS: EvaluatePingResponse = "Success!" 'Some error occurred Case ICMP_STATUS_BUFFER_TO_SMALL: EvaluatePingResponse = "Buffer Too Small" Case ICMP_STATUS_DESTINATION_NET_UNREACH: EvaluatePingResponse = "Destination Net Unreachable" Case ICMP_STATUS_DESTINATION_HOST_UNREACH: EvaluatePingResponse = "Destination Host Unreachable" Case ICMP_STATUS_DESTINATION_PROTOCOL_UNREACH: EvaluatePingResponse = "Destination Protocol Unreachable" Case ICMP_STATUS_DESTINATION_PORT_UNREACH: EvaluatePingResponse = "Destination Port Unreachable" Case ICMP_STATUS_NO_RESOURCE: EvaluatePingResponse = "No Resources" Case ICMP_STATUS_BAD_OPTION: EvaluatePingResponse = "Bad Option" Case ICMP_STATUS_HARDWARE_ERROR: EvaluatePingResponse = "Hardware Error" Case ICMP_STATUS_LARGE_PACKET: EvaluatePingResponse = "Packet Too Big" Case ICMP_STATUS_REQUEST_TIMED_OUT: EvaluatePingResponse = "Request Timed Out" Case ICMP_STATUS_BAD_REQUEST: EvaluatePingResponse = "Bad Request" Case ICMP_STATUS_BAD_ROUTE: EvaluatePingResponse = "Bad Route" Case ICMP_STATUS_TTL_EXPIRED_TRANSIT: EvaluatePingResponse = "TimeToLive Expired Transit" Case ICMP_STATUS_TTL_EXPIRED_REASSEMBLY: EvaluatePingResponse = "TimeToLive Expired Reassembly" Case ICMP_STATUS_PARAMETER: EvaluatePingResponse = "Parameter Problem" Case ICMP_STATUS_SOURCE_QUENCH: EvaluatePingResponse = "Source Quench" Case ICMP_STATUS_OPTION_TOO_BIG: EvaluatePingResponse = "Option Too Big" Case ICMP_STATUS_BAD_DESTINATION: EvaluatePingResponse = "Bad Destination" Case ICMP_STATUS_NEGOTIATING_IPSEC: EvaluatePingResponse = "Negotiating IPSEC" Case ICMP_STATUS_GENERAL_FAILURE: EvaluatePingResponse = "General Failure" 'Unknown error occurred Case Else: EvaluatePingResponse = "Unknown Response" End Select
End Function
Saludos!!
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Castord
Desconectado
Mensajes: 60
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Algo menos extenso, facil y que yo utilizo. Si tenes acceso a las maquinas (no lo mencionaste) podes hacerte un programa que use winsock y haciendole testeo de conexion. Evidente que te dara un error controlable y con un codigo fijo que puede servirte como dato para definir si la maquina esta o no conectada a red, con la sesion iniciada o encendida. Es muiy facil. El drama es que con clientes DHCP se hace un poco compleja la operacion pero igualmente solucionable.
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Desde Asunción - Paraguay /*Es una ***** pero igual amo mi país!*/
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