Digest Authentication fails with 400

[witchi]

Attempts to log-in to an Apache web-site with digest authentication enabled fail with error code 400.

Digest: uri mismatch -
</gallery2/main.php%3Fg2_controller=remote.GalleryRemote&g2_form%5Bcmd%5D=no-op>
does not match request-uri
</gallery2/main.php?g2_controller=remote.GalleryRemote&g2_form%5Bcmd%5D=no-op>

the key difference is between main.php%3F and main.php?

problems seems to lie in HTTPClient.DefaultAuthHandler (line 470).

fixing with ...

// fix up uri and nonce

params[uri] = new NVPair("uri",
URI.escape(req.getRequestURI(), URI.escpdQueryChar, false));
// URI.escape(req.getRequestURI(), URI.escpdPathChar, false));

seems to do the trick.

References, http://www.ietf.org/rfc/rfc2617.txt (Section 3.2.2.5)