View source for Http failure (event)

{{Event
|name=http_failure
|return1=The URL to the website
|desc=Fired when a call to [[http.request]] fails, and used internally in [[http.get]] and [[http.post]].
}}
{{Example
|desc=Prints a message and quits when the requested URL could not be contacted.
|code=
 http.request( "http://www.example-failure.com" )
 while true do
   event, url = os.pullEvent()
   if event == "http_failure" then
     print( "Cannot contact the server: "..url )
     break
   end
 end
}}