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.