registry team mailing list archive

[Ewan Mellor <617788@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

EC2 API requests with empty arguments fail, because the signature check
on the request fails.

Each EC2 request must include a Signature header.  This is generated by
the client using, amongst other things, a canonicalized list of the
other headers in the request.  The specification states that parameters
should be included "even if the parameter value is empty".

http://docs.amazonwebservices.com/AWSEC2/latest/DeveloperGuide/index.html
?using-query-api.html

Requests signed in this way with empty parameter values fail the
signature check by Nova.  This is because Tornado is throwing away empty
arguments.  In this thread, Bret Taylor states that this is a deliberate
decision by Tornado.

http://groups.google.com/group/python-
tornado/browse_thread/thread/d4ec8d798f93c286/99049857d0a85f29?lnk=gst&q=How+does+Tornado+handle+blank+POST#99049857d0a85f29

** Affects: nova
     Importance: Undecided
         Status: New

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Cannot make EC2 API requests with empty arguments
https://bugs.launchpad.net/bugs/617788
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