The Lounge What is on Your Mind? Debugging Our Computer Science Trivia Feature Post 303040643 by Neo on Sunday 3rd of November 2019 02:04:15 AM
OK.. there is a problem with Safari and their Cross-Origin Resource Sharing (CORS) implementation, which is causing Javascript errors when ads or videos are served.

This bug is causing an error in the Trivia JS code, so I have am disabling the trivia for guests (not logged in) who are using Safari (for now, in both mobile and desktop):

Code:
<?php
$user_agent = $_SERVER['HTTP_USER_AGENT'];
if ($vbulletin->userinfo['userid'] < '1') {
    if (stripos($user_agent, 'Chrome') !== false) {
        define('ENABLE_SAFARI_UA', true);
    } else {
        if (stripos($user_agent, 'Safari') !== false) {
            define('ENABLE_SAFARI_UA', false);
            $log = '/var/log/apache2/debug/neo_trivia_global_safari_debug.log';
            error_log(date(DATE_RFC822) . ' UA ' . $user_agent . "\n", 3, $log);
        } else {
            define('ENABLE_SAFARI_UA', true);
        }
    }
} else {
    define('ENABLE_SAFARI_UA', true);
}

I will think about another "fix" for this later.
 
Test Your Knowledge in Computers #703
Difficulty: Medium
Cross-Origin Resource Sharing (CORS) is a mechanism that uses additional HTTP headers to tell browsers to give a web application running at one origin, access to selected resources from a different origin.
True or False?

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CPAN::Meta::Feature(3)					User Contributed Perl Documentation				    CPAN::Meta::Feature(3)

NAME
CPAN::Meta::Feature - an optional feature provided by a CPAN distribution VERSION
version 2.120921 DESCRIPTION
A CPAN::Meta::Feature object describes an optional feature offered by a CPAN distribution and specified in the distribution's META.json (or META.yml) file. For the most part, this class will only be used when operating on the result of the "feature" or "features" methods on a CPAN::Meta object. METHODS
new my $feature = CPAN::Meta::Feature->new( $identifier => \%spec ); This returns a new Feature object. The %spec argument to the constructor should be the same as the value of the "optional_feature" entry in the distmeta. It must contain entries for "description" and "prereqs". identifier This method returns the feature's identifier. description This method returns the feature's long description. prereqs This method returns the feature's prerequisites as a CPAN::Meta::Prereqs object. BUGS
Please report any bugs or feature using the CPAN Request Tracker. Bugs can be submitted through the web interface at <http://rt.cpan.org/Dist/Display.html?Queue=CPAN-Meta> When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature. AUTHORS
o David Golden <dagolden@cpan.org> o Ricardo Signes <rjbs@cpan.org> COPYRIGHT AND LICENSE
This software is copyright (c) 2010 by David Golden and Ricardo Signes. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself. perl v5.16.3 2012-04-01 CPAN::Meta::Feature(3)

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