[drakma-devel] URL-encode and rfc3986

Drakma encodes spaces in URLs as pluses instead of "%20"s. It also leaves the characters "$-_.!*'()" unencoded instead of the RFC3986 unencoded set: "-_.~".

This is okay for tolerant servers but for other applications it is a bug. For example, in OAuth it is necessary to conform to RFC3986 or the signature will be incorrect for the request.

To make Drakma more RFC3986-compliant, replace these four lines in util.lisp:

(find char "$-_.!*'()," :test #'char=)) (write-char char out)) ((char= char #\Space) (write-char #+ out))

with these two: (find char "-_.~" :test #'char=)) (write-char char out))

Best regards, Red