Cookie from ios webview - iphone

Question

I wanted to ask some things about a piece of code i'm trying to make without having any previous contact with ios or objective-c.
This piece of code will:
Open a WebView with a specific url where the user will login
(done)
After the user logs in it will take the cookie created
from that login.
It will use that cookie in a next request to
load another site that requires authentication.
I'm stuck a bit at part 2 because it has to a) wait in another thread till the user does the login (how?) and b) because i can't seem to get the specific cookie for the site easily. I have only found and tried this poc but how do I filter out only the cookie for the site I want?
NSHTTPCookie *cookie;
NSHTTPCookieStorage *cookieJar = [NSHTTPCookieStorage sharedHTTPCookieStorage];
for(cookie in [cookieJar cookies]) {
NSLog(#"%#", cookie);
}
Any ideas on how to make the 2a/b parts? Objective-c syntax seems a bit confusing.

Answer 1

I found a solution by following this https://www.inkling.com/read/learning-ios-programming-alasdair-allan-2nd/chapter-7/embedding-a-web-browser-in-your .
Used the webViewDidFinishLoad delegate and got the cookies from there with the cookiesForURL method.
NSArray* availableCookies = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookiesForURL:[NSURL URLWithString:#"MYURL"]];

Answer 2

Cookies are created as follows,
NSDictionary *properties = [NSDictionary dictionaryWithObjectsAndKeys:
url, NSHTTPCookieOriginURL,
#"testCookies", NSHTTPCookieName,
#"1", NSHTTPCookieValue,
nil];
NSHTTPCookie *cookie = [NSHTTPCookie cookieWithProperties:properties];
You can use the cookie object to get the origin URL attribute and filter.
NSDictionary *cookieProperties = [cookie properties];
NSURL *originURL = [cookieProperties objectForKey:NSHTTPCookieOriginURL];
After filtering the cookie you need you can get the cookie value using,
cookie.value