[tahoe-lafs-trac-stream] [tahoe-lafs] #951: uploads aren't cancelled by closing the web page

[tahoe-lafs]

#951: uploads aren't cancelled by closing the web page
-------------------------+-------------------------------------------------
     Reporter:  zooko    |      Owner:  zooko
         Type:  defect   |     Status:  assigned
     Priority:  major    |  Milestone:  eventually
    Component:  code-    |    Version:  1.6.0
  frontend-web           |   Keywords:  usability upload large wui ophandle
   Resolution:           |
Launchpad Bug:           |
-------------------------+-------------------------------------------------

Comment (by warner):

 Zooko explained to me on IRC (and in #950) that it's the second case. I
 think it'd be a bit gratuitous to terminate the upload just because they
 disconnected, but it's predictable and understandable, so I can go along
 with it.

 This probably needs a {{{request.notifyFinish(cb)}}} on the web side, and
 a bunch of new {{{.cancel}}} code on the Uploader side. Our current
 interface just returns a Deferred, and doesn't have any sort of "upload-
 in-progress" handle. Maybe the new "cancellable Deferred" code in recent
 Twisteds could simplify this? like:

 {{{
 d = do_upload(body)
 request.notifyFinish(d.cancel)
 }}}

-- 
Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/951#comment:7>
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