Cannot Debug On iOS Device After Installing .NET iOS 18.1.9163

[mlancione]

Getting the following Debug Console output when debugging on an iOS device after installing .NET iOS 18.1.9163 (released today):

/usr/local/share/dotnet/packs/Microsoft.iOS.Sdk.net9.0_18.1/18.1.9163/tools/bin/mlaunch
2
error MT0000: Unexpected error - Please file a bug report at https://github.com/xamarin/xamarin-macios/issues/new
System.NotSupportedException: Specified method is not supported.
at Xamarin.Hosting.DeviceCtlDevice.CreateTcpTunnel(LaunchConfig) in /Users/builder/azdo/_work/2/s/tools/mlaunch/Xamarin.Hosting/Xamarin.Hosting/DeviceCtlDevice.cs:line 79
at Xamarin.Launcher.DevController.CreateTcpTunnel(String, LaunchConfig) in /Users/builder/azdo/_work/2/s/tools/mlaunch/Xamarin.Hosting/Xamarin.Launcher/controller-device.cs:line 844
at Xamarin.Launcher.Driver.MainAsync() in /Users/builder/azdo/_work/2/s/tools/mlaunch/Xamarin.Hosting/Xamarin.Launcher/Main.cs:line 536
at Xamarin.Utils.NSRunLoopExtensions.RunUntilTaskCompletion[T](NSRunLoop, Task`1) in /Users/builder/azdo/_work/2/s/tools/mlaunch/Xamarin.Hosting/Xamarin.Utils/Extensions.cs:line 30
at Xamarin.Launcher.Driver.Main2(String[]) in /Users/builder/azdo/_work/2/s/tools/mlaunch/Xamarin.Hosting/Xamarin.Launcher/Main.cs:line 443
at Xamarin.Launcher.Driver.Main(String[]) in /Users/builder/azdo/_work/2/s/tools/mlaunch/Xamarin.Hosting/Xamarin.Launcher/Main.cs:line 130
System.NotSupportedException: Specified method is not supported.
at Xamarin.Hosting.DeviceCtlDevice.CreateTcpTunnel(LaunchConfig) in /Users/builder/azdo/_work/2/s/tools/mlaunch/Xamarin.Hosting/Xamarin.Hosting/DeviceCtlDevice.cs:line 79
at Xamarin.Launcher.DevController.CreateTcpTunnel(String, LaunchConfig) in /Users/builder/azdo/_work/2/s/tools/mlaunch/Xamarin.Hosting/Xamarin.Launcher/controller-device.cs:line 844
at Xamarin.Launcher.Driver.MainAsync() in /Users/builder/azdo/_work/2/s/tools/mlaunch/Xamarin.Hosting/Xamarin.Launcher/Main.cs:line 536
at Xamarin.Utils.NSRunLoopExtensions.RunUntilTaskCompletion[T](NSRunLoop, Task`1) in /Users/builder/azdo/_work/2/s/tools/mlaunch/Xamarin.Hosting/Xamarin.Utils/Extensions.cs:line 30
at Xamarin.Launcher.Driver.Main2(String[]) in /Users/builder/azdo/_work/2/s/tools/mlaunch/Xamarin.Hosting/Xamarin.Launcher/Main.cs:line 443
at Xamarin.Launcher.Driver.Main(String[]) in /Users/builder/azdo/_work/2/s/tools/mlaunch/Xamarin.Hosting/Xamarin.Launcher/Main.cs:line 130

[mlancione]

These 2 .net changes could be related which have been committed to main but were not included in today's 18.1.9163 release:
xamarin/xamarin-macios@3d4ea05
xamarin/xamarin-macios@5b695a3

[JaneySprings]

Hi, @mlancione! Yes, something changed in the iOS workload.

xamarin/xamarin-macios#21664 (comment)

[JaneySprings]

@mlancione, I have created a 6.1.3 hotfix. I'm not sure that it is correct fix but it works for now =)

I will leave this issue opened until the official solution.

[mlancione]

@JaneySprings Thanks for the quick fix! As always, your support is excellent! I can report that the debugging is working again with your change.

One side question, is it possible to display the output of the deployment progress while the app is being uploaded to the device? VS Mac used to show a console output with percentages.

[JaneySprings]

I use mlaunch --installdev:

DotNet.Meteor/src/DotNet.Meteor.Common/Apple/MonoLauncher.cs

Lines 16 to 23 in 20a4929

	public static void InstallDev(string serial, string bundlePath, IProcessLogger? logger = null) {
	var tool = AppleSdkLocator.MLaunchTool();
	logger?.OnOutputDataReceived(tool.FullName);
	new ProcessRunner(tool, new ProcessArgumentBuilder()
	.Append( "--installdev").AppendQuoted(bundlePath)
	.Append($"--devname={serial}"), logger)
	.WaitForExit();
	}

and I don't know if it supports this functionality because this tool is closed-source.
Usually I look at circle progress on iOS device.

[mlancione]

According to this commit there may be an "-install-progress" argument that can be used? If it works maybe you can add it as an optional feature?
xamarin/xamarin-macios#1483

In this newer post it looks like it's being launched with "--install-progress":
xamarin/xamarin-macios#21542

[JaneySprings]

Yes, it works, but we also need to disable device-ctl for installation.

new ProcessRunner(tool, new ProcessArgumentBuilder()
            .Append( "--installdev").AppendQuoted(bundlePath)
            .Append($"--devname={serial}")
            .Append( "--install-progress")
            .Append( "--use-device-ctl=false"), logger)
            .WaitForExit();

[mlancione]

I think that looks great. Will help to monitor deployment status.

[JaneySprings]

Added in 6.1.4!