Networking Resources

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General:

TN3151 Choosing the right networking API
Networking Overview document — Despite the fact that this is in the archive, this is still really useful.
TLS for App Developers DevForums post
Choosing a Network Debugging Tool documentation
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?
TN3135 Low-level networking on watchOS
Adapt to changing network conditions tech talk

Foundation networking:

DevForums tags: Foundation, CFNetwork
URL Loading System documentation — NSURLSession, or URLSession in Swift, is the recommended API for HTTP[S] on Apple platforms.

Network framework:

DevForums tag: Network
Network framework documentation — Network framework is the recommended API for TCP, UDP, and QUIC on Apple platforms.
Building a custom peer-to-peer protocol sample code (aka TicTacToe)
Implementing netcat with Network Framework sample code (aka nwcat)
Configuring a Wi-Fi accessory to join a network sample code
Moving from Multipeer Connectivity to Network Framework DevForums post

Network Extension (including Wi-Fi on iOS):

Wi-Fi on macOS:

Secure networking:

Miscellaneous:

Share and Enjoy
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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"