http_check
The http_check event is fired when a URL check finishes.
This event is normally handled inside http.checkURL, but it can still be seen when using http.checkURLAsync.
Return Values
string: The event name.string: The URL requested to be checked.boolean: Whether the check succeeded.string|nil: If the check failed, a reason explaining why the check failed.
See also
http.checkURLAsyncTo check a URL asynchronously.