I'm working on an app that does peer-to-peer communication between Apple devices. As far as I understand, the Network framework is a good choice for this. I have something that works, but I'm curious about the details of how this works and if I might somehow optimize this. My current understanding is that the best connection I can get between two devices is over AWDL. Is this true? If so, does Network use this? Can I ask it to use it preferentially? What kind of bandwidth and latency should I expect out of this, and are there any drawbacks to using it like power usage or transport limitations? If both devices are on the same LAN, I assume they can also talk to each other over Wi-Fi (or a wired connection if both are plugged in, I guess). If I use Bonjour service discovery, is this what I will be getting? What does Network do if the LAN network does not perform well? Will it swap the underlying connection if it figures out there is something better? I am not tied to any particular API or transport protocol, so any input on tradeoffs between ease of implementation/performance/reliability/whatever would be welcome :)

I have a tool that generates thousands of signpost events a second. Unfortunately, when profiling earlier signposts appear to get lost over the course of the run because they are not persisted and the buffer for these runs out. How can I get these to persist? For reference, I've filed a feedback for this as FB12129526, and more context can be found (in meme form) here: https://federated.saagarjha.com/notice/AUm3AprLdVOnUPfiQy.

As I understand it, Apple will be making most iOS apps available to Macs with Apple silicon automatically. I don't really have any issues with this in particular, since I don't have a Mac app right now, but I was curious if this automatic process would have implications in the future if I wanted to offer a full Mac application myself (either using Catalyst or native macOS frameworks). Would I be able to pull my app off the automatic program and make it available in the Mac App Store at that point?

Just noticed the new framework and was wondering if there was a way to use this (or any other public API) the determine location of iOS SDK in addition to the macOS one (if one is installed, of course).