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[Launchpad Bug Tracker <1409995@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package unity-scopes-api -
0.6.11+15.04.20150121.2-0ubuntu1

---------------
unity-scopes-api (0.6.11+15.04.20150121.2-0ubuntu1) vivid; urgency=low

  [ Ubuntu daily release ]
  * debian/libunity-scopes3.symbols: auto-update to released version

  [ thomas-voss ]
  * Switch from QNetwork to net-cpp (LP: #1326816, #1409995)

  [ Michał Sawicz ]
  * Depend on :native version of g++ to allow cross-compiling to work.
    Also run `wrap-and-sort -at` (LP: #1353855)

  [ Marcus Tomlinson ]
  * Switch from QNetwork to net-cpp (LP: #1326816, #1409995)

  [ Michi Henning ]
  * Added utility subdir to header tests.
  * Bunch of miscellaneous fixes:

  [ James Henstridge ]
  * Expose the deserialize() static method on FilterBase and FilterState
    for use by the Go bindings.
 -- Ubuntu daily release <ps-jenkins@xxxxxxxxxxxxxxxxxxx>   Wed, 21 Jan 2015 12:46:41 +0000

** Changed in: unity-scopes-api (Ubuntu)
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1409995

Title:
  Queries to remote scopes time out

Status in the base for Ubuntu mobile products:
  In Progress
Status in unity-scopes-api package in Ubuntu:
  Fix Released

Bug description:
  I'm seeing this on Mako, image #63, devel-proposed.

  Periodically, the music scope fails to return any results, leaving a
  blank screen.

  Looking through the log files, I'm seeing tons of messages such as
  this:

  [2015-01-13 01:33:27.056262] INFO: SSRegistry: SmartScopesClient.get_remote_scopes(): GET https://dash.ubuntu.com/smartscopes/v2/remote-scopes?locale=en_US
  [2015-01-13 01:33:27.057239] ERROR: SSRegistry: SmartScopesClient.get_remote_scopes(): failed to read /custom/partner-id: unity::FileException: cannot open "/custom/partner-id": No such file or directory (errno = 2)
  [2015-01-13 01:33:46.996259] ERROR: SSRegistry: SmartScopesClient.get_remote_scopes(): Failed to retrieve remote scopes from uri: https://dash.ubuntu.com/smartscopes/v2/remote-scopes: unity::ResourceException: Request timed out: https://dash.ubuntu.com/smartscopes/v2/remote-scopes?locale=en_US

  The request times out even though the remote end works fine. (Easy to
  confirm by pasting the same URL into the browser.)

  As an aside, the error about /custom/partner-id isn't an error: if the
  file doesn't exist (errno = 2), we should say nothing. That'll get rid
  of a lot of noise.

  In addition, when I run a query, I see all queries to remote scopes
  fail (see attached trace).

  I'm not familiar with the code. Looking through, I noticed this:

  HttpResponseHandle::SPtr response = http_client_->get(remote_scopes_uri.str(), [&response_str](std::string const& replyLine) {
                  response_str += replyLine; // accumulate all reply lines
          }, headers);
          response->get();

  Following this through, it appears that response_str is being appended
  to from a different thread without any lock. That looks like it's
  wrong to me. But that doesn't explain the timeout exception that is
  thrown from response->get().

  I suspect a race condition somewhere because, occasionally, I get a
  query that works.

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