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Posted to modperl@perl.apache.org by Ken Williams <ke...@forum.swarthmore.edu> on 2001/04/07 00:02:39 UTC
ANNOUNCE: Apache::Filter 1.017
The URL
http://www.mathforum.com/~ken/modules/archive/Apache-Filter-1.017.tar.gz
has entered CPAN as
file: $CPAN/authors/id/K/KW/KWILLIAMS/Apache-Filter-1.017.tar.gz
size: 24147 bytes
md5: 304aabb626ae8694ca75e639b1981e7b
Changes from 1.016:
Fixed a filehandle bug in which send_fd() would complain about a 'Bad
filehandle'. Occurred most often with Apache::Compress.
Added a couple of tests to properly exercise the send_fd() method.
------------------- -------------------
Ken Williams Last Bastion of Euclidity
ken@forum.swarthmore.edu The Math Forum
Re: ANNOUNCE: Apache::Filter 1.017
Posted by Ken Williams <ke...@forum.swarthmore.edu>.
jr.mayberry@e-vend.net (JR Mayberry) wrote:
>Is it required to, for instance, if you had a 4 chain handler as follows:
>
>ReadCache->Handler->WriteCache->Apache::Compress
>
>for the WriteCache handler to do: $r->filter_input() and $r->print()
>while <$fh> even if it doesnt need to?
>
>If I don't do that I seem to be losing all output, when I get to the
>Apache::Compress stage
I'm not actually sure which of two questions you might actually mean.
If you mean
A) Must I call $r->filter_register in each handler?
the answer is yes. Otherwise the bookkeeping gets off. If you mean
B) Must I actually print the input handle to the output filehandle if I
don't intend to change the data?
the answer is 'probably'.
The input needs somehow to be turned to output. Without doing this,
Apache::Filter can't tell the difference between a handler that doesn't
intend to change the output, and a handler that doesn't intend to send
any output at all.
This discussion suggests that perhaps there ought to be an easy/quick
way for a handler to declare that it doesn't intend to change the
output. Perhaps a method could be added to Apache::Filter for this, if
it's a common need.
Right now, you could do the following in the no-op handlers:
$r = $r->filter_register();
my $fh = $r->filter_input;
$r->send_fd($fh);
(though I'm not quite sure why these exist as content handlers if
they're no-ops.)
------------------- -------------------
Ken Williams Last Bastion of Euclidity
ken@forum.swarthmore.edu The Math Forum
Re: ANNOUNCE: Apache::Filter 1.017
Posted by JR Mayberry <jr...@e-vend.net>.
Is it required to, for instance, if you had a 4 chain handler as follows:
ReadCache->Handler->WriteCache->Apache::Compress
for the WriteCache handler to do: $r->filter_input() and $r->print() while
<$fh> even if it doesnt need to?
If I don't do that I seem to be losing all output, when I get to the
Apache::Compress stage
----- Original Message -----
From: "Ken Williams" <ke...@forum.swarthmore.edu>
To: "modperl" <mo...@apache.org>
Cc: "JR Mayberry" <jr...@e-vend.net>
Sent: Friday, April 06, 2001 6:02 PM
Subject: ANNOUNCE: Apache::Filter 1.017
> The URL
>
>
http://www.mathforum.com/~ken/modules/archive/Apache-Filter-1.017.tar.gz
>
> has entered CPAN as
>
> file: $CPAN/authors/id/K/KW/KWILLIAMS/Apache-Filter-1.017.tar.gz
> size: 24147 bytes
> md5: 304aabb626ae8694ca75e639b1981e7b
>
>
> Changes from 1.016:
>
> Fixed a filehandle bug in which send_fd() would complain about a 'Bad
> filehandle'. Occurred most often with Apache::Compress.
>
> Added a couple of tests to properly exercise the send_fd() method.
>
>
> ------------------- -------------------
> Ken Williams Last Bastion of Euclidity
> ken@forum.swarthmore.edu The Math Forum