#7195 BLOC Never A: Corrupted multiple downloads at the same time

[Zarro Boogs per Child]

#7195: Corrupted multiple downloads at the same time
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 Reporter:  cjb        |       Owner:  tomeu         
     Type:  defect     |      Status:  new           
 Priority:  blocker    |   Milestone:  Never Assigned
Component:  datastore  |     Version:  Update.1      
 Keywords:             |    Verified:  0             
 Blocking:             |   Blockedby:                
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 We found a bug while preparing content bundles for the library.  Here's
 the bug description:

 The bug symptom is that you get two "Download started: [continue]
 [cancel]" dialogs on top of each other when clicking on a PDF to
 "download" it into the datastore from the sidebar of the local Library.

 If you click continue on both of them, or don't click anything at all
 (continue is the default) then your datastore gets a single file which has
 *the contents of the PDF interleaved with itself*, creating a invalid PDF
 twice as large as it should be.

 So, Browse, the Journal and the datastore are willing to conspire to have
 two downloads of the same file happening at the same time, and to be
 appending both copies of that file's data to the same target file in the
 datastore.

 SJ found what we hope is the cause -- we have an "onclick" handler in the
 library as well as an <a> tag, and clicking the <a> tag fires both links,
 so you start downloading the file twice.

-- 
Ticket URL: <http://dev.laptop.org/ticket/7195>
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