in reply to Break out from download

G'day IB2017,

"Is there an easy way to break out of the download"

Take a look at the last paragraph of "LWP::UserAgent: get" which has:

"The callback can abort the request by invoking die()."

— Ken

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Re^2: Break out from download
by IB2017 (Pilgrim) on Apr 09, 2020 at 20:05 UTC

    Hi Ken

    I do not quite get it: invoking die() as for killing my script (main program). I can't find any object method called die in LWP.

[reply]

      LWP invokes the callback inside an eval; using die will be caught and translated into an "X-Died" header in the response object.

      You will need to arrange for the "Cancel" button to set a flag that the callback then checks. Having the Tk callback handler directly die will abort the run through the event loop and may or may not cause problems. Tk is a very complex XS module, so it would be best to avoid throwing an exception "around the event loop" directly.

[reply]
[d/l]
[select]

      The die can be caught with an eval and will not necessarily always cause perl to exit.

      (But POSIX has _exit if you ever did need to stop a process immediately</extrememly-tangentially-related-aside>).

      The cake is a lie.
      The cake is a lie.
      The cake is a lie.

[reply]
[d/l]
      invoking die() as for killing my script (main program)

      does it, tho? maybe try first, worry later?

[reply]

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