Strip trailing optional whitespace (OWS) from single-line header field values - Githubissues

benoitc / gunicorn

gunicorn 'Green Unicorn' is a WSGI HTTP Server for UNIX, fast clients and sleepy applications.

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Strip trailing optional whitespace (OWS) from single-line header field values #3254

Closed pajod closed 1 month ago

pajod commented 2 months ago

Backwards incompatible behavior - but only in rare instances of trailing padding on header field values. Old behavior was wrong, new behavior is sanctioned by https://datatracker.ietf.org/doc/html/rfc9112#name-field-syntax

~~first commit is just to clean up diff view, should be empty if applied after #3217~~
drive-by change: introduce a new HTTP error class & ~~config to~~ squish deprecated folding altogether
drive-by change: handle the other newly introduced HTTP error classes as well
Fixes: #3245