General:
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Networking Overview document — Despite the fact that this is in the archive, this is still really useful.
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TLS for App Developers DevForums post
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Choosing a Network Debugging Tool documentation
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WWDC 2019 Session 712 Advances in Networking, Part 1 — This explains the concept of constrained networking, which is Apple’s preferred solution to questions like How do I check whether I’m on Wi-Fi?
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Adapt to changing network conditions tech talk
Foundation networking:
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DevForums tags: Foundation, CFNetwork
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URL Loading System documentation —
NSURLSession, orURLSessionin Swift, is the recommended API for HTTP[S] on Apple platforms.
Network framework:
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DevForums tag: Network
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Network framework documentation — Network framework is the recommended API for TCP, UDP, and QUIC on Apple platforms.
Network Extension (including Wi-Fi on iOS):
Wi-Fi on macOS:
Secure networking:
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DevForums tags: Security
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Apple Platform Security support document
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Preventing Insecure Network Connections documentation — This is all about App Transport Security (ATS).
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Available trusted root certificates for Apple operating systems support article
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Requirements for trusted certificates in iOS 13 and macOS 10.15 support article
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About upcoming limits on trusted certificates support article
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Apple’s Certificate Transparency policy support article
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Technote 2232 HTTPS Server Trust Evaluation
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Technote 2326 Creating Certificates for TLS Testing
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QA1948 HTTPS and Test Servers
Miscellaneous:
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On FTP DevForums post
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Using the Multicast Networking Additional Capability DevForums post
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Investigating Network Latency Problems DevForums post
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Local Network Privacy FAQ DevForums post
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Extra-ordinary Networking DevForums post
Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"