Answers.Body: <p>In this situation, some possibilities to evaluate:</p>
  
  <ul>
  <li>There is a problem on <code>civicrm.org</code>, but it only occurs on a subpage. For example, in v4.7.x (and maybe 4.6.x), it fetches the subpage <code>/single</code> (e.g. <code>https://civicrm.org/extdir/ver=4.7.9|cms=Drupal/single</code>).</li>
  <li>There <em>was</em> a problem on <code>civicrm.org</code> and the failure got somehow cached. You could wait a while and try again -- or clear the caches. (Maybe use the "Support => Developer => API Explorer" to run <code>Extension.refresh</code> or <code>System.flush</code>.)</li>
  <li>Something in the web server environment is preventing it from making the request, e.g.
  
  <ul>
  <li>A security system (such as a firewall, suhosin, or php ini setting) interferes with outgoing requests.</li>
  <li>The curl/http layer has a broken HTTP/SSL configuration.</li>
  </ul></li>
  </ul>
  
  <p>In this particular case, I believe there was a change on <code>civicrm.org</code> which prevented it from correctly reading several of the XML files needed for <code>/single</code>, but that issue is now resolved.</p>
  
  <p>(See also: <a href="https://issues.civicrm.org/jira/browse/CRM-19090" rel="nofollow">https://issues.civicrm.org/jira/browse/CRM-19090</a> )</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-07-15T01:56:32.003Z
Answers.Text: Confirming that the issue has indeed been resolved.
Answers.UserDisplayName: KarinG - Semper IT
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-05-10T22:58:04.057Z
Answers.Text: I have used it and it works well for me.  Do we know why this would happen about once a week?
Answers.UserDisplayName: Josh
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-07-14T21:26:38.060Z
Answers.LastActivityDate: 2016-07-14T21:33:21.030Z
Answers.LastEditDate: 2016-07-14T21:33:21.030Z
Answers.UserDisplayName: Tim Otten
Answers.Body: <p>There have been intermittent connectivity issues with our civicrm.org server this week. We've observed this ourselves as well for a number of our projects. </p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-07-14T21:02:51.823Z
Answers.LastActivityDate: 2016-07-14T21:02:51.823Z
Answers.UserDisplayName: KarinG - Semper IT
Answers.Body: <p>It is working fine today. Must have been a temporary access issue.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2016-07-15T17:12:27.863Z
Answers.LastActivityDate: 2016-07-15T17:12:27.863Z
Answers.UserDisplayName: bob bowen
Body: <p>I receive this error:  Extension download error
  The CiviCRM public extensions directory at <a href="https://civicrm.org/extdir/ver=4.7.9|cms=Drupal" rel="nofollow">https://civicrm.org/extdir/ver=4.7.9|cms=Drupal</a> could not be contacted - please check your webserver can make external HTTP requests or contact CiviCRM team on CiviCRM forum.
  However, from the browser I can go to that page and see a listing of extension.xml files. I'm trying to get the twilio sms extension installed.
  Drupal 7.5 CiviCRM 4.7.9</p>
  
Tags: <drupal><civisms>
Title: Error reaching public extensions directory
ThreadText: # Error reaching public extensions directory
  
  (Asked by: username_0 on 2016-07-14)
  
  I receive this error: Extension download error
  The CiviCRM public extensions directory at <https://civicrm.org/extdir/ver=4.7.9|cms=Drupal> could not be contacted - please check your webserver can make external HTTP requests or contact CiviCRM team on CiviCRM forum.
  However, from the browser I can go to that page and see a listing of extension.xml files. I'm trying to get the twilio sms extension installed.
  Drupal 7.5 CiviCRM 4.7.9
  
  **Tags:** drupal, civisms
  
  
  ---
  
  ## 3 answers
  
  ### Answer by username_1 on 2016-07-14. Score: 2
  
  In this situation, some possibilities to evaluate:
  
  * There is a problem on `civicrm.org`, but it only occurs on a subpage. For example, in v4.7.x (and maybe 4.6.x), it fetches the subpage `/single` (e.g. `https://civicrm.org/extdir/ver=4.7.9|cms=Drupal/single`).
  * There *was* a problem on `civicrm.org` and the failure got somehow cached. You could wait a while and try again -- or clear the caches. (Maybe use the "Support => Developer => API Explorer" to run `Extension.refresh` or `System.flush`.)
  * Something in the web server environment is preventing it from making the request, e.g.
    + A security system (such as a firewall, suhosin, or php ini setting) interferes with outgoing requests.
    + The curl/http layer has a broken HTTP/SSL configuration.
  
  In this particular case, I believe there was a change on `civicrm.org` which prevented it from correctly reading several of the XML files needed for `/single`, but that issue is now resolved.
  
  (See also: <https://issues.civicrm.org/jira/browse/CRM-19090> )
  
  > **Comments:**
  > **username_2**: Confirming that the issue has indeed been resolved.  
  > **username_3**: I have used it and it works well for me.  Do we know why this would happen about once a week?  
  
  ---
  
  ### Answer by username_2 on 2016-07-14. Score: 1
  
  There have been intermittent connectivity issues with our civicrm.org server this week. We've observed this ourselves as well for a number of our projects.
  
  
  ---
  
  ### Answer by username_0 on 2016-07-15. Score: 1
  
  It is working fine today. Must have been a temporary access issue.
  
  
  ---
  
  