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Re: libwww-perl basics

by rowdog (Curate)
on Aug 12, 2010 at 17:27 UTC ( #854720=note: print w/replies, xml ) Need Help??

in reply to libwww-perl basics

Maybe you can get the Content-Disposition with a HEAD request.

$ua->head( $url )

In terms of dumping the headers you can do something like

my @field_names = $response->headers->header_field_names; print "$_ => ", $response->header($_), "\n" for @field_names;

or better yet

$response->headers->scan(sub { my ($key, $value) = @_; print "$key => $value\n"; });

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Re^2: libwww-perl basics
by Anonymous Monk on Aug 13, 2010 at 10:47 UTC
    I can't because the HEAD request (after going through an authorization sequence with time delays) destroys the ability for me to subsequently retrieve the content (one connection, and then the file is "gone").

      You could write the file to a temp file, parse the header, and then rename the file. As an alternative, lwpcook shows how to process a file as it arrives, so maybe you can read the header when the first chunk comes in.

Re^2: libwww-perl basics
by Anonymous Monk on Aug 13, 2010 at 10:54 UTC
    The second code snippet works perfectly for printing headers. Thank you.

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[Corion]: Maybe the solution would be a tablet (with pens), like the Wacom tablets, but you still need good software and need to know how to operate it well in an interactive setting ;)
[ambrus]: Corion: the solution depends on who for. Some non-math presentations need to show lots of graphics or photos, with fine details and color. For those, blackboard or overhead transparencies aren't so good (yes, you can print on transparencies, but there's s
[ambrus]: ome quality limits), but film projection or computer projector is fine.
[ambrus]: A minority of math presenters are traditional and don't want to operate a computer. For them, handwritten overhead transparencies and blackboard are fine.

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