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And reverse DNS, to get the hostname from an IP address. Anyone know why Windows takes so long to do this kind of thing? It takes a good few seconds here...

Hi-Toro wrote:And reverse DNS, to get the hostname from an IP address. Anyone know why Windows takes so long to do this kind of thing? It takes a good few seconds here...

Code: Select all

Procedure.l IntFromAddress (ip$)
	ProcedureReturn inet_addr_ (@ip$)
EndProcedure

Procedure.s AddressFromInt (ip.l)
	ProcedureReturn PeekS (inet_ntoa_ (ip))
EndProcedure

; Create WSA version number (damn, ugly!)... 

high.b = 1: low.b = 1 
wsaversion.w

PokeB (@wsaversion, high) ; Gotta poke major version number into low byte... 
PokeB (@wsaversion + 1, low) ; ... and minor version number into high byte

If WSAStartup_ (wsaversion, wsa.WSAData) = #NOERROR

	ip$ = "192.168.0.2" ; PC on local network
;	ip$ = "212.58.226.79" ; BBC News site (shows "newslb308.telhc.bbc.co.uk" at time of writing)

	ipaddr = IntFromAddress (ip$)
	
	*host.hostent = gethostbyaddr_ (@ipaddr, 4, #AF_INET)

	If *host
		Debug ip$ + " = " + PeekS (*host\h_name)
	Else
		Debug "Error... parse results as per MSDN!"
	EndIf
	
	WSACleanup_ () ; Close Windows sockets stuff...
	
EndIf

almost instant here, not enough delay to even have enough time to say "hmmm"