[wp-trac] [WordPress Trac] #55971: saving settings returns 404 - WP_SITEURL not used?

[WordPress Trac]

#55971: saving settings returns 404 - WP_SITEURL not used?
--------------------------+-----------------------------
 Reporter:  mommens       |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:  6.0
 Severity:  normal        |   Keywords:
  Focuses:                |
--------------------------+-----------------------------
 I have 2 servers.

 Server B hosts a WordPress installation (DigitalOcean Marketplace 1 click
 install).

 Server A hosts example.com. The blog is accessed at example.com/blog
 thanks to Apache proxypass:


 {{{
         <Location "/blog">
                   ProxyAddHeaders On
                   ProxyPass https://10.110.0.3
                   ProxyPassReverse https://10.110.0.3
                   Header add Access-Control-Allow-Origin "*"
                   RequestHeader set X-Forwarded-Proto "https"
                   RequestHeader set X-Forwarded-Port "443"
         </Location>
 }}}


 in wp-config.php I have set


 {{{
 if (!empty($_SERVER['HTTP_X_FORWARDED_PROTO']) &&
 $_SERVER['HTTP_X_FORWARDED_PROTO'] === 'https') {
         $_SERVER['HTTPS'] = 'on';
 }

 define('WP_HOME','https://example.com/blog');
 define('WP_SITEURL','https://example.com/blog');
 }}}


 Everything works fine apart from saving the settings that return a 404.
 The form is submitted to the incorrect URL:

 https://example.com/wp-admin/options-general.php?settings-updated=true

 instead of

 https://example.com/blog/wp-admin/options-general.php?settings-
 updated=true

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Ticket URL: <https://core.trac.wordpress.org/ticket/55971>
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