[wp-trac] [WordPress Trac] #32186: URL Scheme on media attachments is incorrectly set to https when administration performed over SSL

[WordPress Trac]

#32186: URL Scheme on media attachments is incorrectly set to https when
administration performed over SSL
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 Reporter:  khlo          |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Media         |    Version:  4.2
 Severity:  normal        |   Keywords:
  Focuses:                |
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 My site is set up as follows:
 * Administration is performed at https://example.com/wp-admin. This uses a
 self-signed SSL certificate to protect against eavesdropping (e.g. on
 public wi-fi).
 * The front-end is accessed through http://example.com.
 * Our Wordpress siteurl is set to http://example.com.
 * We use `define('FORCE_SSL_ADMIN', true);` in wp-config.php to enforce
 SSL on the admin (but not on the front-end).

 In Wordpress 4.2, [https://core.trac.wordpress.org/changeset/31614
 changeset #31614] was introduced to fix
 [https://core.trac.wordpress.org/ticket/15928 ticket #15928].

 Unfortunately, this has broken images on our website. As administration is
 being performed over SSL, `wp_get_attachment_url()` returns an image with
 the https:// URL schema. This is then saved in the post. When readers
 access the post through our http front-end, images will not load as the
 img src attribute uses https (not available due to the self-signed
 certificate).

 Expected behaviour: `wp_get_attachment_url()` should use the same URL
 schema as siteurl (i.e. it should use the http schema as we've
 specifically set this in our siteurl).

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Ticket URL: <https://core.trac.wordpress.org/ticket/32186>
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