Cookie names should be case-sensitive #78
Description
rqCookies and Cookie records contains lowercase name of the cookie. But browsers treat the cookie names in case-sensitive manner.
It's easy for server to make the cookie lookup case-insensitive when cookies have correct letter cases by using lower, upper or any kind of case-insensitive comparison. But it's not possible to fill in the correct letter cases when the cookie name is lowercased.
The issue seems to stem from this line: https://github.com/Happstack/happstack-server/blob/master/src/Happstack/Server/Internal/Cookie.hs#L173
return $ Cookie ver path domain (low name) val False False SameSiteNoValueMeanwhile, mkCookieHeader preserves the letter casing in the Set-Cookie header, which makes it more inconsistent.