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-rw-r--r--Master/tlpkg/TeXLive/TLDownload.pm27
1 files changed, 21 insertions, 6 deletions
diff --git a/Master/tlpkg/TeXLive/TLDownload.pm b/Master/tlpkg/TeXLive/TLDownload.pm
index 6eae84d289b..8af68db84b6 100644
--- a/Master/tlpkg/TeXLive/TLDownload.pm
+++ b/Master/tlpkg/TeXLive/TLDownload.pm
@@ -1,6 +1,6 @@
# $Id$
# TeXLive::TLDownload.pm - module for abstracting the download modes
-# Copyright 2009-2020 Norbert Preining
+# Copyright 2009-2021 Norbert Preining
# This file is licensed under the GNU General Public License version 2
# or any later version.
@@ -48,23 +48,38 @@ sub new
-sub reinit
-{
+sub reinit {
my $self = shift;
+
+ # Irritatingly, as of around version 6.52, when env_proxy is set, LWP
+ # started unconditionally complaining if the environment contains
+ # differing case-insensitive like foo=1 and FOO=2. Even on systems
+ # that have case-sensitive environments, and even about variables that
+ # have nothing whatsoever to do with LWP (like foo).
+ #
+ # So, only pass env_proxy=>1 when creating the UserAgent if there are
+ # in fact *_proxy variables (case-insensitive, just in case) set in
+ # the environment.
+ #
+ my @env_proxy = ();
+ if (grep { /_proxy/i } keys %ENV ) {
+ @env_proxy = ("env_proxy", 1);
+ }
+ #
my $ua = LWP::UserAgent->new(
agent => "texlive/lwp",
# use LWP::ConnCache, and keep 1 connection open
keep_alive => 1,
- env_proxy => 1,
timeout => $TeXLive::TLConfig::NetworkTimeout,
+ @env_proxy,
);
$self->{'ua'} = $ua;
$self->{'enabled'} = 1;
$self->{'errorcount'} = 0;
$self->{'initcount'} += 1;
}
-sub enabled
-{
+
+sub enabled {
my $self = shift;
return $self->{'enabled'};
}