Dapr TCP error

[ngruson]

I'm using a Dapr sidecar riding along with a background worker app.

.WithDaprSidecar(new DaprSidecarOptions
 {
    AppProtocol = "http",
    AppId = "workerDapr",
    AppPort = 5003,
    ResourcesPaths = ImmutableHashSet.Create("./components")
 });

Even though I set the AppProtocol to http, I'm still getting an error No address resolver configured for the scheme 'tcp' when the internal gRPC client gets instantiated.

Hosting failed to start
      System.InvalidOperationException: No address resolver configured for the scheme 'tcp'.
         at Grpc.Net.Client.GrpcChannel.GetResolverFactory(GrpcChannelOptions options)
         at Grpc.Net.Client.GrpcChannel..ctor(Uri address, GrpcChannelOptions channelOptions)
         at Grpc.Net.Client.GrpcChannel.ForAddress(Uri address, GrpcChannelOptions channelOptions)
         at Grpc.Net.Client.GrpcChannel.ForAddress(String address, GrpcChannelOptions channelOptions)
         at Grpc.Net.Client.GrpcChannel.ForAddress(String address)
         at Microsoft.DurableTask.Worker.Grpc.GrpcDurableTaskWorker.GetChannel(String address)
         at Microsoft.DurableTask.Worker.Grpc.GrpcDurableTaskWorker.GetCallInvoker(CallInvoker& callInvoker)
         at Microsoft.DurableTask.Worker.Grpc.GrpcDurableTaskWorker.ExecuteAsync(CancellationToken stoppingToken)
         at Microsoft.Extensions.Hosting.Internal.Host.<StartAsync>b__15_1(IHostedService service, CancellationToken token)
         at Microsoft.Extensions.Hosting.Internal.Host.ForeachService[T](IEnumerable`1 services, CancellationToken token, Boolean concurrent, Boolean abortOnFirstException, List`1 exceptions, Func`3 operation)

When I check the environment variables, DAPR_GRPC_ENDPOINT is set to tcp://localhost:62955.
How do I turn this into a http endpoint?

I tried

.WithHttpEndpoint(null, null, "DAPR_GRPC_ENDPOINT");

which is also blowing up:

System.InvalidOperationException: Sequence contains more than one matching element
   at System.Linq.ThrowHelper.ThrowMoreThanOneMatchException()
   at System.Linq.Enumerable.TryGetSingle[TSource](IEnumerable`1 source, Func`2 predicate, Boolean& found)
   at System.Linq.Enumerable.SingleOrDefault[TSource](IEnumerable`1 source, Func`2 predicate)
   at Aspire.Hosting.ApplicationModel.EndpointReference.GetEndpointAnnotation() in /_/src/Aspire.Hosting/ApplicationModel/EndpointReference.cs:line 100
   at Aspire.Hosting.ApplicationModel.EndpointReference.GetAllocatedEndpoint() in /_/src/Aspire.Hosting/ApplicationModel/EndpointReference.cs:line 102
   at Aspire.Hosting.ApplicationModel.EndpointReference.get_IsAllocated() in /_/src/Aspire.Hosting/ApplicationModel/EndpointReference.cs:line 35
   at Aspire.Hosting.Dapr.DaprDistributedApplicationLifecycleHook.<>c__DisplayClass6_1.<BeforeStartAsync>b__9(IList`1 updatedArgs) in /_/src/Aspire.Hosting.Dapr/DaprDistributedApplicationLifecycleHook.cs:line 179
   at Aspire.Hosting.ApplicationModel.CommandLineArgsCallbackAnnotation.<>c__DisplayClass1_0.<.ctor>b__0(CommandLineArgsCallbackContext c) in /_/src/Aspire.Hosting/ApplicationModel/CommandLineArgsCallbackAnnotation.cs:line 32
   at Aspire.Hosting.Dcp.ApplicationExecutor.CreateExecutableAsync(AppResource er, ILogger resourceLogger, CancellationToken cancellationToken) in /_/src/Aspire.Hosting/Dcp/ApplicationExecutor.cs:line 1153
   at Aspire.Hosting.Dcp.ApplicationExecutor.<CreateExecutablesAsync>g__CreateExecutableAsyncCore|54_0(AppResource cr, CancellationToken cancellationToken) in /_/src/Aspire.Hosting/Dcp/ApplicationExecutor.cs:line 1093

[ngruson]

I fixed this by updating to the latest NuGet package versions 8.1.0-preview.1.24217.12.
Then I could see that the Dapr endpoints have a http scheme.
Consequently, the gRPC channels can be opened succesfully.