url resolution 1

[iminore]

Does anyone have any info on url resolution. I don't mean parsing or validating the syntax of an url - actually checking programmatically that it exists.

 

[foxbox]

There are many (free) components like this:

http://www.pstruh.cz/help/tcpip/default.htm

or you could examine the output of a ping:

<% 
    cUrl = "[URL unfurl="true"]www.tek-tips.com"[/URL]
    Set oWShell = CreateObject("WScript.Shell") 
    Set oCmd = oWShell.Exec("ping " & cUrl) 
    cPing = oCmd.StdOut.Readall() 
    set oCmd = nothing
    Set oWShell = nothing 

    if left(cPing,7) = "Unknown" then
     response.write cUrl & " does not exist"
    end if
%>

(but of course this is not completely true: the side may be down)

 

[Genimuse]

Great tip, thanks!