Question

try
    set logindetails to (do shell script "curl google.com")
    on error
        display dialog "Unable to connect."
        quit
end try

When I put my network down, it gives me an error saying “unable to resolve host” and it never quits the application rather it stays in the background.

Is there a proper way to quit the application when unable to connect to the server or any other command to force quit or suppress and continue.

Answer 1

The correct way to end a running script is to use return:

try
  set logindetails to (do shell script "curl google.com")
on error
  display dialog "Unable to connect."
  return
end try

See the AppleScript Language Guide’s pertinent section.