Getting all cookies from WKWebView

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Cookies used (created) by the WKWebView are actually correctly stored in the NSHTTPCookieStorage.sharedHTTPCookieStorage().

The problem is that the WKWebView does not write back the cookies immediately. I think it does this on its own schedule. For example when a WKWebView is closed or maybe periodically.

So eventually they do end up in there, but when is unpredictable.

You may be able to force a ‘sync’ to the shared NSHTTPCookieStorage by closing your WKWebView. Please let us know if this works.

Update: I just remembered that in Firefox for iOS we force the WKWebView to flush its internal data, including cookies, by replacing its WKProcessPool with a new one. There is no official API, but I am pretty sure that is the most reliable workaround right now.

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