[Bug 1003633] [NEW] Escape plus character in apt HTTP requests to work around Amazon S3 bug

[Daniel Hartwig]

Also, this 2007 thread:

[1] https://forums.aws.amazon.com/thread.jspa?threadID=16361

where AWS representatives expound on their "justification" some more.
Instead of being well-behaved netizens, they just document their
non-conformance – though there is no indication in these threads where
such documentation is, other than provided in examples.

That thread also indicates that the path is expected to be
URL-encoded, not just some characters.  This probably means including
':' and others to avoid more unanticipated transforms.

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https://bugs.launchpad.net/bugs/1003633

Title:
  Escape plus character in apt HTTP requests to work around Amazon S3
  bug

Status in “apt” package in Ubuntu:
  New

Bug description:
  
  Amazon S3 performs incorrect query-string un-escaping on URLs and improperly converts the plus ('+') character to a space (' ') when processing incoming GET requests for files.  This causes apt-get to get HTTP 404 errors when downloading packages from S3-hosted mirrors which include a + character in the name of the package.

  For more background info, see:
  https://forums.aws.amazon.com/thread.jspa?threadID=55746

  One possibly solution is to change the call to QuoteString in http.cc
  to include '+' in the character set, which would escape the plus
  character to the %2B form, which will be properly processed by Amazon
  S3.

  Thanks,
  Doug

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