[wp-trac] [WordPress Trac] #29886: WP_HTTP::make_absolute_url() treats schemeless URLs as relative

[WordPress Trac]

#29886: WP_HTTP::make_absolute_url() treats schemeless URLs as relative
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 Reporter:  dd32          |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  4.1
Component:  HTTP API      |    Version:  trunk
 Severity:  normal        |   Keywords:
  Focuses:                |
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 Currently if you pass `WP_HTTP::make_absolute_url()` a scheme-less url,
 it's converted to a absolute url based on the current domain, ignoring the
 host of the schemeless url.

 Although Schemeless URL's are invalid in HTTP Headers, since this is a
 helper function used elsewhere, and because many systems don't follow the
 specifications strictly, we should handle schemeless url's correctly.

 The correct option for this function appears to be to convert it to a
 protocol relative url, safe for use in a HTTP request.

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Ticket URL: <https://core.trac.wordpress.org/ticket/29886>
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