Use lower case constants for headers (fixes Rack > 2 applications) #660
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On Rack 3 rack/rack#1592, it was decided to lowercase all response headers. Thus, all logic in the codebase that checks for headers coming from Rack > 2 applications is broken.
This PR:
Rack.release > "2"so that we keep compatibility with Rack 2.x and 1.6.x.ifstatements that look a bit ugly, but that was the pattern I found was being used within the codebase.Note
I'm yet to write some specs for this but wanted to get this draft out for potential discussion.