Add libraries.

ControlR.Web.Server/Authz/AuthorizationPolicyBuilderExtensions.cs

@@ -0,0 +1,14 @@
+using Microsoft.AspNetCore.Authorization;
+
+namespace ControlR.Web.Server.Authz;
+
+public static class AuthorizationPolicyBuilderExtensions
+{
+  public static AuthorizationPolicyBuilder RequireServiceProviderAssertion(
+    this AuthorizationPolicyBuilder builder,
+    Func<IServiceProvider, AuthorizationHandlerContext, Task<bool>> assertion)
+  {
+    builder.Requirements.Add(new ServiceProviderRequirement(assertion));
+    return builder;
+  }
+}

ControlR.Web.Server/Authz/ServiceProviderRequirement.cs

@@ -0,0 +1,9 @@
+using Microsoft.AspNetCore.Authorization;
+
+namespace ControlR.Web.Server.Authz;
+
+public class ServiceProviderRequirement(Func<IServiceProvider, AuthorizationHandlerContext, Task<bool>> assertion)
+  : IAuthorizationRequirement
+{
+  public Func<IServiceProvider, AuthorizationHandlerContext, Task<bool>> Assertion { get; } = assertion;
+}

ControlR.Web.Server/Authz/ServiceProviderRequirementHandler.cs

@@ -0,0 +1,19 @@
+using Microsoft.AspNetCore.Authorization;
+
+namespace ControlR.Web.Server.Authz;
+
+public class ServiceProviderRequirementHandler(IServiceProvider serviceProvider) : IAuthorizationHandler
+{
+  private readonly IServiceProvider _serviceProvider = serviceProvider;
+
+  public async Task HandleAsync(AuthorizationHandlerContext context)
+  {
+    foreach (var requirement in context.Requirements.OfType<ServiceProviderRequirement>())
+    {
+      if (await requirement.Assertion.Invoke(_serviceProvider, context))
+      {
+        context.Succeed(requirement);
+      }
+    }
+  }
+}

ControlR.sln

@@ -65,6 +65,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ControlR.Web.ServiceDefault
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ControlR.Web.AppHost", "ControlR.Web.AppHost\ControlR.Web.AppHost.csproj", "{5FE149EC-5F31-4E79-BDD1-DD98A3DC22C3}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ControlR.Libraries.Signalr.Client", "Libraries\ControlR.Libraries.Signalr.Client\ControlR.Libraries.Signalr.Client.csproj", "{CFF4CEB7-C437-44F2-BA4C-7AE5171A5E94}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -143,6 +145,10 @@ Global
 		{5FE149EC-5F31-4E79-BDD1-DD98A3DC22C3}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{5FE149EC-5F31-4E79-BDD1-DD98A3DC22C3}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{5FE149EC-5F31-4E79-BDD1-DD98A3DC22C3}.Release|Any CPU.Build.0 = Release|Any CPU
+		{CFF4CEB7-C437-44F2-BA4C-7AE5171A5E94}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{CFF4CEB7-C437-44F2-BA4C-7AE5171A5E94}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{CFF4CEB7-C437-44F2-BA4C-7AE5171A5E94}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{CFF4CEB7-C437-44F2-BA4C-7AE5171A5E94}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -160,9 +166,9 @@ Global
 		{1D8E803F-D7C4-40FE-9122-A5DF2D8B5FC2} = {5E522C75-6FF4-4ADF-99F4-F8DBFF7F5D13}
 		{95B98845-4F9C-4B6B-88F7-9194A2A824CA} = {6A8B754D-F60A-42FB-9C3F-E19A6BBD0987}
 		{E36620C7-2D12-4956-BF31-A82258A7C656} = {5E522C75-6FF4-4ADF-99F4-F8DBFF7F5D13}
+		{CFF4CEB7-C437-44F2-BA4C-7AE5171A5E94} = {5E522C75-6FF4-4ADF-99F4-F8DBFF7F5D13}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
-										SolutionGuid = {61F7FB11-1E47-470C-91E2-47F8143E1572}
 		SolutionGuid = {078E947A-B1A3-491E-BA80-0370172FB5F9}
 	EndGlobalSection
 EndGlobal

Libraries/ControlR.Libraries.Signalr.Client/ControlR.Libraries.Signalr.Client.csproj

@@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>true</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.SignalR.Client" Version="8.0.8" />
+    <PackageReference Include="Microsoft.Extensions.Hosting.Abstractions" Version="8.0.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ControlR.Libraries.Shared\ControlR.Libraries.Shared.csproj" />
+  </ItemGroup>
+
+</Project>

Libraries/ControlR.Libraries.Signalr.Client/ControlR.Libraries.Signalr.Client.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.5.002.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ControlR.Libraries.Signalr.Client", "ControlR.Libraries.Signalr.Client.csproj", "{0B7429D5-9B67-45C1-B28E-74BF34CCA29E}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{0B7429D5-9B67-45C1-B28E-74BF34CCA29E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{0B7429D5-9B67-45C1-B28E-74BF34CCA29E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{0B7429D5-9B67-45C1-B28E-74BF34CCA29E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{0B7429D5-9B67-45C1-B28E-74BF34CCA29E}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {D619719E-CF9E-46E7-BA82-17563D7D496E}
+	EndGlobalSection
+EndGlobal

Libraries/ControlR.Libraries.Signalr.Client/Diagnostics/DefaultActivitySource.cs

@@ -0,0 +1,9 @@
+using System.Diagnostics;
+
+namespace ControlR.Libraries.Signalr.Client.Diagnostics;
+internal static class DefaultActivitySource
+{
+  public const string Name = "ControlR.Libraries.Signalr.Client";
+  public static readonly ActivitySource Instance = new(Name);
+  public static Activity? StartActivity(string name) => Instance.StartActivity(name);
+}

Libraries/ControlR.Libraries.Signalr.Client/Exceptions/DynamicObjectGenerationException.cs

@@ -0,0 +1,3 @@
+namespace ControlR.Libraries.Signalr.Client.Exceptions;
+
+public class DynamicObjectGenerationException(string message) : Exception(message);

Libraries/ControlR.Libraries.Signalr.Client/Extensions/IServiceCollectionExtensions.cs

@@ -0,0 +1,58 @@
+using Microsoft.AspNetCore.SignalR.Client;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.DependencyInjection.Extensions;
+
+namespace ControlR.Libraries.Signalr.Client.Extensions;
+public static class IServiceCollectionExtensions
+{
+  /// <summary>
+  /// <para>
+  ///   Creates a transient registration in DI for <typeparamref name="TClientImpl"/>
+  ///   that resolves to <typeparamref name="TClient"/>.
+  /// </para>
+  /// <para>
+  ///   Creates a transient registration in DI for <see cref="IHubConnection{THub, TClient}"/>.
+  /// </para>
+  /// <para>
+  ///   Consumers should use the <see cref="IHubConnection{THub, TClient}"/> interface for
+  ///   connecting to and interacting with the server.
+  /// </para>
+  /// </summary>
+  /// <typeparam name="THub">
+  ///   An interface representing the public methods on the server-side hub.
+  ///   These methods will be invokable by the client.
+  /// </typeparam>
+  /// <typeparam name="TClient">
+  ///   An interface representing the public methods on the client-side hub.
+  ///   These methods will be invokable by the server.
+  /// </typeparam>
+  /// <typeparam name="TClientImpl">
+  ///   An implementation of <typeparamref name="TClient"/>.  These methods
+  ///   will handle the RPC invocations from the server.
+  /// </typeparam>
+  /// <param name="services"></param>
+  /// <returns></returns>
+  public static IServiceCollection AddStronglyTypedSignalrClient<THub, TClient, TClientImpl>(this IServiceCollection services)
+    where THub : class
+    where TClient : class
+    where TClientImpl : class, TClient
+  {
+    if (!typeof(THub).IsInterface)
+    {
+      throw new InvalidOperationException("THub must be an interface.");
+    }
+
+    if (!typeof(TClient).IsInterface)
+    {
+      throw new InvalidOperationException("TClient must be an interface.");
+    }
+
+    services.TryAddTransient<IHubConnectionBuilder, HubConnectionBuilder>();
+    services.TryAddTransient<TClient, TClientImpl>();
+    services.TryAddTransient<
+      IHubConnection<THub>,
+      HubConnection<THub, TClient>>();
+
+    return services;
+  }
+}