[wp-trac] [WordPress Trac] #25071: fetch_feed() returns WP_Error with "A valid URL was not provided"

[WordPress Trac]

#25071: fetch_feed() returns WP_Error with "A valid URL was not provided"
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 Reporter:  jaychris      |       Owner:
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  3.7
Component:  Feeds         |     Version:  3.6
 Severity:  major         |  Resolution:
 Keywords:                |
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Comment (by nacin):

 Replying to [ticket:25071 jaychris]:
 > Both sites (client site and feed provider) reside on the same host (but
 NOT multi-site) and are behind a firewall, it's not possible to fetch via
 the external IP resolver.

 This isn't something we can solve for in WordPress core without opening up
 a potential security hole.

 You'll need to whitelist the target hosts using the
 http_request_host_is_external filter.

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Ticket URL: <http://core.trac.wordpress.org/ticket/25071#comment:3>
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