Wifi disconnect breaks HttpMessageHandler

Steps to Reproduce

Connect to a WIFI without InternetAccess from within the App using this Code:

public int ConnectToWifi29andUp(String ssid, String password)
        {
            try
            {
                bool connectionSuccess = false;
                bool connectionResultAvailable = false;

                networkCallback.NetworkAvailable += delegate (Network network)
                {
                    connectionSuccess = true;
                    connectionResultAvailable = true;
                    ;
                };

                networkCallback.NetworkUnAvailable += delegate (bool result)
                {
                    connectionSuccess = false;
                    connectionResultAvailable = true;
                    ;
                };

                ConnectivityManager connectivityManager = Android.App.Application.Context.GetSystemService(Context.ConnectivityService) as ConnectivityManager;

                var wifiManager = Android.App.Application.Context.GetSystemService(Context.WifiService) as WifiManager;
                if (!wifiManager.IsWifiEnabled)
                {
                    wifiManager.SetWifiEnabled(true);
                }
                //NetworkStatus result = wifiManager.RemoveNetworkSuggestions(suggestionsList);

                //result = wifiManager.AddNetworkSuggestions(suggestionsList);

                WifiNetworkSpecifier specifier = new WifiNetworkSpecifier.Builder()
                    .SetSsid(ssid)
                    .SetWpa2Passphrase(password)
                    .Build();

                NetworkRequest request = new NetworkRequest.Builder()
                    .AddTransportType(TransportType.Wifi)
                    .RemoveCapability(NetCapability.Internet)
                    .SetNetworkSpecifier(specifier)
                    .Build();

                connectivityManager.RequestNetwork(request, networkCallback);

                int connectionTimeout = 30000;

                while (!connectionResultAvailable && (connectionTimeout -= 1000) >= 0)
                {
                    Task.Delay(1000).Wait();
                }
                return connectionSuccess ? 1 : 0;
            }
            catch (Exception exc)
            {
                System.Diagnostics.Debug.WriteLine(exc.ToString());
            }
            return 0;
        }

        private static Android.App.Result GetResultFromCode(int code) =>
        code switch
        {
            0 => Android.App.Result.Ok, // newly added
            2 => Android.App.Result.Ok, // wifi already there
            _ => Android.App.Result.Canceled
        };

Disconnect the Wifi like this:

public void DisconnectWifi(string ssid)   public void DisconnectWifi(string ssid)
    {
        if (Android.OS.Build.VERSION.SdkInt > BuildVersionCodes.P)
        {
            ConnectivityManager connectivityManager = Android.App.Application.Context.GetSystemService(Context.ConnectivityService) as ConnectivityManager;
            connectivityManager.UnregisterNetworkCallback(networkCallback);
        }
        else
        {
            var wifiManager = Android.App.Application.Context.GetSystemService(Context.WifiService) as WifiManager;
            wifiManager.SetWifiEnabled(false);
            wifiManager.SetWifiEnabled(true);
        }
    }

Try to use a HttpMessageHandler to connect to any URL it does not Work the Exception thrown is

Network is unreachable

Expected Behavior

I would imagine after the Restoration of a connection to a Wifi with an internetconnection that the Exception goes away.

Actual Behavior

But the behavior stais till you reboot the app, reusing the handler and reinitializing the handlerfactory seems unefective. But in this case I recieve a different exception.

System.ObjectDisposedException: Cannot access a disposed object.
Object name: 'SocketsHttpHandler'.
  at System.Net.Http.SocketsHttpHandler.CheckDisposed () [0x00008] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/external/corefx/src/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/SocketsHttpHandler.cs:22 
  at System.Net.Http.SocketsHttpHandler.SendAsync (System.Net.Http.HttpRequestMessage request, System.Threading.CancellationToken cancellationToken) [0x00000] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/external/corefx/src/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/SocketsHttpHandler.cs:336 
  at System.Net.Http.SocketsHttpHandler.System.Net.Http.IMonoHttpClientHandler.SendAsync (System.Net.Http.HttpRequestMessage request, System.Threading.CancellationToken cancellationToken) [0x00000] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/System.Net.Http/corefx/SocketsHttpHandler.Mono.cs:48 
  at System.Net.Http.HttpClientHandler.SendAsync (System.Net.Http.HttpRequestMessage request, System.Threading.CancellationToken cancellationToken) [0x00000] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mcs/class/System.Net.Http/HttpClientHandler.cs:198 
  at System.Net.Http.DelegatingHandler.SendAsync (System.Net.Http.HttpRequestMessage request, System.Threading.CancellationToken cancellationToken) [0x00019] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/external/corefx/src/System.Net.Http/src/System/Net/Http/DelegatingHandler.cs:54 
  at Microsoft.AspNetCore.Http.Connections.Client.Internal.AccessTokenHttpMessageHandler.<>n__0 (System.Net.Http.HttpRequestMessage request, System.Threading.CancellationToken cancellationToken) [0x00000] in <246d837b124a4624a33ae937a4e5ac18>:0 
  at Microsoft.AspNetCore.Http.Connections.Client.Internal.AccessTokenHttpMessageHandler.SendAsync (System.Net.Http.HttpRequestMessage request, System.Threading.CancellationToken cancellationToken) [0x0009f] in <246d837b124a4624a33ae937a4e5ac18>:0 
  at Microsoft.AspNetCore.Http.Connections.Client.Internal.LoggingHttpMessageHandler.SendAsync (System.Net.Http.HttpRequestMessage request, System.Threading.CancellationToken cancellationToken) [0x00095] in <246d837b124a4624a33ae937a4e5ac18>:0 
  at System.Net.Http.HttpClient.FinishSendAsyncUnbuffered (System.Threading.Tasks.Task`1[TResult] sendTask, System.Net.Http.HttpRequestMessage request, System.Threading.CancellationTokenSource cts, System.Boolean disposeCts) [0x000b3] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/external/corefx/src/System.Net.Http/src/System/Net/Http/HttpClient.cs:531 
  at Microsoft.AspNetCore.Http.Connections.Client.HttpConnection.NegotiateAsync (System.Uri url, System.Net.Http.HttpClient httpClient, Microsoft.Extensions.Logging.ILogger logger, System.Threading.CancellationToken cancellationToken) [0x00257] in <246d837b124a4624a33ae937a4e5ac18>:0 
  at Microsoft.AspNetCore.Http.Connections.Client.HttpConnection.GetNegotiationResponseAsync (System.Uri uri, System.Threading.CancellationToken cancellationToken) [0x00080] in <246d837b124a4624a33ae937a4e5ac18>:0 
  at Microsoft.AspNetCore.Http.Connections.Client.HttpConnection.SelectAndStartTransport (Microsoft.AspNetCore.Connections.TransferFormat transferFormat, System.Threading.CancellationToken cancellationToken) [0x00180] in <246d837b124a4624a33ae937a4e5ac18>:0 
  at Microsoft.AspNetCore.Http.Connections.Client.HttpConnection.StartAsyncCore (Microsoft.AspNetCore.Connections.TransferFormat transferFormat, System.Threading.CancellationToken cancellationToken) [0x00127] in <246d837b124a4624a33ae937a4e5ac18>:0 
  at System.Threading.Tasks.ForceAsyncAwaiter.GetResult () [0x0000c] in <246d837b124a4624a33ae937a4e5ac18>:0 
  at Microsoft.AspNetCore.Http.Connections.Client.HttpConnection.StartAsync (Microsoft.AspNetCore.Connections.TransferFormat transferFormat, System.Threading.CancellationToken cancellationToken) [0x00091] in <246d837b124a4624a33ae937a4e5ac18>:0 
  at Microsoft.AspNetCore.Http.Connections.Client.HttpConnectionFactory.ConnectAsync (System.Net.EndPoint endPoint, System.Threading.CancellationToken cancellationToken) [0x00114] in <246d837b124a4624a33ae937a4e5ac18>:0 
  at Microsoft.AspNetCore.Http.Connections.Client.HttpConnectionFactory.ConnectAsync (System.Net.EndPoint endPoint, System.Threading.CancellationToken cancellationToken) [0x001bf] in <246d837b124a4624a33ae937a4e5ac18>:0 
  at System.Threading.Tasks.ValueTask`1[TResult].get_Result () [0x0001b] in /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/external/corefx/src/Common/src/CoreLib/System/Threading/Tasks/ValueTask.cs:813 
  at Microsoft.AspNetCore.SignalR.Client.HubConnection.StartAsyncCore (System.Threading.CancellationToken cancellationToken) [0x000a5] in <8dd6fa3545a347338587f9958af16302>:0 
  at Microsoft.AspNetCore.SignalR.Client.HubConnection.StartAsyncInner (System.Threading.CancellationToken cancellationToken) [0x001a4] in <8dd6fa3545a347338587f9958af16302>:0 
  at System.Threading.Tasks.ForceAsyncAwaiter.GetResult () [0x0000c] in <8dd6fa3545a347338587f9958af16302>:0 
  at Microsoft.AspNetCore.SignalR.Client.HubConnection.StartAsync (System.Threading.CancellationToken cancellationToken) [0x00091] in <8dd6fa3545a347338587f9958af16302>:0

Version Information

Testest on: Android Pixel 3a with Android 11: Xamarin version: 5.0.0.2125 and Xamarin Version 5.0.0.2083

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dotnet / android