A quick tip that might save someone a good few hours of bug hunting:
Under iOS it seems that when creating cookies via [NSHTTPCookie cookieWithProperties] that using NSHTTPCookieOriginURL will cause creation to fail. Instead you should pass the URL as two parts using CookieDomain and CookiePath.
E.g this will silently fail:
[[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookie:
[NSHTTPCookie cookieWithProperties:
[NSDictionary dictionaryWithObjectsAndKeys:
@"Name", NSHTTPCookieName,
@"Value", NSHTTPCookieValue,
referringUrl, NSHTTPCookieOriginURL,
nil
]
]
];
[NSHTTPCookie cookieWithProperties:
[NSDictionary dictionaryWithObjectsAndKeys:
@"Name", NSHTTPCookieName,
@"Value", NSHTTPCookieValue,
referringUrl, NSHTTPCookieOriginURL,
nil
]
]
];
But this will work (referringUrl is an NSURL such as http://example.com/foo/bar)
NSHTTPCookie* cookie = [NSHTTPCookie cookieWithProperties:
[NSDictionary dictionaryWithObjectsAndKeys:
@"Name", NSHTTPCookieName,
@"Value", NSHTTPCookieValue,
[referringUrl host], NSHTTPCookieDomain,
[referringUrl path], NSHTTPCookiePath,
nil
]
];
CBD_ASSERT(cookie);
[[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookie:cookie];
[NSDictionary dictionaryWithObjectsAndKeys:
@"Name", NSHTTPCookieName,
@"Value", NSHTTPCookieValue,
[referringUrl host], NSHTTPCookieDomain,
[referringUrl path], NSHTTPCookiePath,
nil
]
];
CBD_ASSERT(cookie);
[[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookie:cookie];
And you can see, this time there’s a handy assert to catch any problems early on. Sometimes it pays to break your code into multiple statements even when not strictly necessary.
"Whiist Classic" will essentially be the current version of Whiist, upgraded to Vail and with some usability and feature tweaks. "Whiist XXXXX" (where XXXXX is a designator I haven’t thought of yet) is a different take on the same concept. It still solves the same problem – sharing your home content with the outside world – but is simpler and more elegant. It’s a complete rewrite. There’s no ETA (mostly because Vail has no ETA!), but I have most of the features working in prototype/proof of concept form on IIS7 & .NET 3.5 machines. 
