NetworkReachability is obsolete on iOS/maccatalyst 17.4+

[Cheesebaron]

Description

Looking at the warnings from the code the NetworkReachability class is obsolete on newer versions of iOS/maccatalyst.

Steps to Reproduce

Check https://github.com/dotnet/maui/blob/main/src/Essentials/src/Connectivity/Connectivity.ios.tvos.macos.reachability.cs and look at the warnings it produces

Link to public reproduction project repository

No response

Version with bug

10.0.0-rc.2

Is this a regression from previous behavior?

No, this is something new

Last version that worked well

Unknown/Other

Affected platforms

iOS, macOS

Affected platform versions

iOS/maccatalyst 17.4+

Did you find any workaround?

Warning suggests to use NSUrlSession or NWConnection APIs instead of NetworkReachability

Relevant log output

[TamilarasanSF4853]

This issue has been validated in Visual Studio Code 1.105.1 with MAUI versions 10.0.0-rc2. It can be reproduced on the iOS and macOS platforms.

NetworkReachabilityIssue.zip

[Cheesebaron]

I think the solution would be to set up a NWPathMonitor to monitor network changes. If you want I can prepare a PR with a possible solution.

[jfversluis]

Related: #2574

[jfversluis]

@Cheesebaron does #32354 look anything in the right direction, if so, can you test it? If not, happy to look at a PR from you :)

Important thing would be to not touch the public API if we want this to go in .NET 10

[Cheesebaron]

@jfversluis it is along the lines of that PR. There are a few things like using an Action rather than a regular method for the callback. Also NWPathMonitor doesn't allow looking up an IP or monitoring the path to a website. But I guess that is not the important part in this code.

I gave up a little bit on my own PR, because I keep running into the same issues as in my previously opened issue here #15719 where dotnet restore doesn't like my local setup. After manually adding a packageSourceMapping, iOS projects don't load in the solution explorer in VS Code on mac. And yes, I've followed the docs on getting started and tried using the net10* branches, since main seems to be targeting something I don't have access to.

[jfversluis]

@Cheesebaron sorry to hear that! If you want to figure that out I'd be happy to have a look, or maybe join the MAUIverse Discord where there are a lot of contributors as well that might have seen this.

If the Copilot one looks half decent, if you can review that and put comments in there I can keep iterating on that one with Copilot to see if we can get it in a decent state?