NWPath crashes on EnumerateGateways #13772
Description
Steps to Reproduce
- Write code
- Start app
- Crash
Expected Behavior
Should work without problem and return gateways
Actual Behavior
System.InvalidCastException: Specified cast is not valid.
at (wrapper castclass) System.Object.__castclass_with_cache(object,intptr,intptr)
at ObjCRuntime.BlockLiteral.GetTarget[T] (System.IntPtr block) [0x0000b] in <5b08e01cb6df409eb2fea153e6177e5d>:0
at Network.NWPath.TrampolineEnumerator (System.IntPtr block, System.IntPtr iface) [0x00000] in /Users/builder/azdo/_work/1/s/xamarin-macios/src/Network/NWPath.cs:117
at (wrapper native-to-managed) Network.NWPath.TrampolineEnumerator(intptr,intptr)
at (wrapper managed-to-native) Network.NWPath.nw_path_enumerate_gateways(intptr,ObjCRuntime.BlockLiteral&)
at Network.NWPath.EnumerateGateways (System.Action`1[T] callback) [0x00023] in /Users/builder/azdo/_work/1/s/xamarin-macios/src/Network/NWPath.cs:201
at <project>.iOS.AppDelegate+<>c.<FinishedLaunching>b__2_0 (Network.NWPath path) [0x00001] in /Users/immons/Projects/<project>/AppDelegate.cs:66
at Network.NWPathMonitor.SetUpdatedSnapshotHandlerWrapper (Network.NWPath path) [0x0000f] in /Users/builder/azdo/_work/1/s/xamarin-macios/src/Network/NWPathMonitor.cs:135
at Network.NWPathMonitor.TrampolineUpdatedSnapshot (System.IntPtr block, System.IntPtr path) [0x00012] in /Users/builder/azdo/_work/1/s/xamarin-macios/src/Network/NWPathMonitor.cs:91
at (wrapper native-to-managed) Network.NWPathMonitor.TrampolineUpdatedSnapshot(intptr,intptr)
--- End of stack trace from previous location where exception was thrown ---
at (wrapper managed-to-native) Network.NWPath.nw_path_enumerate_gateways(intptr,ObjCRuntime.BlockLiteral&)
at Network.NWPath.EnumerateGateways (System.Action`1[T] callback) [0x00023] in /Users/builder/azdo/_work/1/s/xamarin-macios/src/Network/NWPath.cs:201
Environment
=== Visual Studio Community 2019 for Mac ===
Version 8.10.16 (build 2)
Installation UUID: 09995ad3-84b8-4737-b130-b090e8f17c2d
GTK+ 2.24.23 (Raleigh theme)
Xamarin.Mac 6.18.0.23 (d16-6 / 088c73638)
Package version: 612000162
=== Mono Framework MDK ===
Runtime:
Mono 6.12.0.162 (2020-02/2ca650f1f62) (64-bit)
Package version: 612000162
=== Xamarin Designer ===
Version: 16.11.0.39
Hash: cd672761d
Branch: remotes/origin/d16-11
Build date: 2021-10-06 21:09:18 UTC
=== Roslyn (Language Service) ===
3.10.0-4.21269.26+029847714208ebe49668667c60ea5b0a294e0fcb
=== NuGet ===
Version: 5.9.0.7134
=== .NET SDK (x64) ===
SDK: /usr/local/share/dotnet/sdk/6.0.100/Sdks
SDK Versions:
6.0.100
5.0.404
5.0.401
5.0.301
5.0.201
5.0.103
5.0.102
5.0.101
5.0.100
3.1.416
3.1.415
3.1.413
3.1.410
3.1.407
3.1.406
3.1.405
3.1.404
3.1.403
3.1.402
3.1.401
3.1.302
3.1.300
3.1.200
MSBuild SDKs: /Applications/Visual Studio.app/Contents/Resources/lib/monodevelop/bin/MSBuild/Current/bin/Sdks
=== .NET Core Runtime ===
Runtime: /usr/local/share/dotnet/dotnet
Runtime Versions:
6.0.0
5.0.13
5.0.10
5.0.7
5.0.4
5.0.3
5.0.2
5.0.1
5.0.0
3.1.22
3.1.21
3.1.19
3.1.16
3.1.13
3.1.12
3.1.11
3.1.10
3.1.9
3.1.8
3.1.7
3.1.6
3.1.4
3.1.2
2.1.23
2.1.22
2.1.21
2.1.20
2.1.18
2.1.16
=== .NET Core 3.1 SDK ===
SDK: 3.1.416
=== .NET 5.0 SDK ===
SDK: 5.0.404
=== Xamarin.Profiler ===
Version: 1.6.15.68
Location: /Applications/Xamarin Profiler.app/Contents/MacOS/Xamarin Profiler
=== Updater ===
Version: 11
=== Apple Developer Tools ===
Xcode 13.2.1 (19586)
Build 13C100
=== Xamarin.Mac ===
Version: 8.4.0.0 (Visual Studio Community)
Hash: 8fc41ae82
Branch: xcode13.2
Build date: 2021-12-09 01:07:56-0500
=== Xamarin.Android ===
Version: 12.0.0.3 (Visual Studio Community)
Commit: xamarin-android/d16-11/f0e3c2d
Android SDK: /Users/immons/Library/Developer/Xamarin/android-sdk-macosx
Supported Android versions:
8.1 (API level 27)
SDK Tools Version: 26.1.1
SDK Platform Tools Version: 31.0.3
SDK Build Tools Version: 30.0.3
Build Information:
Mono: c633fe9
Java.Interop: xamarin/java.interop/d16-11@476bb5b
ProGuard: Guardsquare/proguard/v7.0.1@912d149
SQLite: xamarin/sqlite/3.35.4@85460d3
Xamarin.Android Tools: xamarin/xamarin-android-tools/d16-11@87af37b
=== Eclipse Temurin JDK ===
Java SDK: Not Found
=== Android SDK Manager ===
Version: 16.10.0.13
Hash: 1b81df5
Branch: remotes/origin/d16-10
Build date: 2021-11-12 01:17:32 UTC
=== Android Device Manager ===
Version: 16.10.0.15
Hash: 89dcc0b
Branch: remotes/origin/d16-10
Build date: 2021-11-12 01:17:52 UTC
=== Xamarin.iOS ===
Version: 15.4.0.0 (Visual Studio Community)
Hash: 8fc41ae82
Branch: xcode13.2
Build date: 2021-12-09 01:07:56-0500
=== Build Information ===
Release ID: 810160002
Git revision: 6dbc7886fa608147f685a7df3912249400c84716
Build date: 2021-12-14 15:54:37-05
Build branch: release-8.10
=== Operating System ===
Mac OS X 11.4.0
Darwin 20.5.0 Darwin Kernel Version 20.5.0
Sat May 8 05:10:33 PDT 2021
root:xnu-7195.121.3~9/RELEASE_X86_64 x86_64
Example Project (If Possible)
var monitor = new NWPathMonitor(NWInterfaceType.Wifi);
monitor.SetQueue(DispatchQueue.DefaultGlobalQueue);
monitor.Start();
monitor.SnapshotHandler += path =>
{
//crashes
path.EnumerateGateways(gateway =>
{
Console.WriteLine($"Gateway: {gateway}");
});
path.EnumerateInterfaces(intface =>
{
Console.WriteLine($"Interface: {intface}");
});
};