Learn NSURLSession using Swift Part 1 — HTTP/HTTPS GET
Sam Wang
1007

Hi, I’m new in ios and I always have two warnings/errors about two delegate functions:

Non-@objc method ‘URLSession(_:didReceiveChallenge:completionHandler:)’ cannot satisfy optional requirement of @objc protocol ‘NSURLSessionDelegate’

I cannot find any information from internet.

Any suggestion?

Thanks in advance.

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