[tahoe-lafs-trac-stream] [Tahoe-LAFS] #3860: Finish up immutable HTTP download/upload APIs

[Tahoe-LAFS]

#3860: Finish up immutable HTTP download/upload APIs
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 Reporter:  itamarst  |          Owner:  itamarst
     Type:  task      |         Status:  new
 Priority:  normal    |      Milestone:  HTTP Storage Protocol
Component:  unknown   |        Version:  n/a
 Keywords:            |  Launchpad Bug:
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 #3855 implemented just the simple success case of uploading and
 downloading to the storage server via HTTP.

 This follow-up issue will cover all the various failure modes and edge
 cases.

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Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/3860>
Tahoe-LAFS <https://Tahoe-LAFS.org>
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