Added multi-targeting

Author: ascott18

demo/DemoServer/Startup.cs

@@ -30,8 +30,9 @@ public void ConfigureServices(IServiceCollection services)
                 {
                     o.ConnectionString = Configuration.GetConnectionString("Default");
                     o.AutoEnableServiceBroker = true;
-                    o.TableCount = 50;
-                    //o.SchemaName = "Signalrcore";
+                    o.TableSlugGenerator = hubType => hubType.Name;
+                    o.TableCount = 1;
+                    o.SchemaName = "SignalRCore";
                 });
         }
 

src/IntelliTect.AspNetCore.SignalR.SqlServer/IntelliTect.AspNetCore.SignalR.SqlServer.csproj

@@ -1,7 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
 	<PropertyGroup>
-		<TargetFramework>net5.0</TargetFramework>
+		<TargetFrameworks>netstandard2.0;netcoreapp3.1;net5.0</TargetFrameworks>
+		<LangVersion>9.0</LangVersion>
 		<Nullable>enable</Nullable>
 	</PropertyGroup>
 
@@ -10,6 +11,16 @@
 		<PackageReference Include="Microsoft.AspNetCore.SignalR.Core" Version="1.1.0" />
 		<PackageReference Include="Microsoft.Data.SqlClient" Version="3.0.0" />
 		<PackageReference Include="Microsoft.Extensions.Logging" Version="5.0.0" />
+		<PackageReference Include="System.Diagnostics.Tools" Version="4.3.0" />
+		
+		<PackageReference Include="Nullable" Version="1.3.0">
+			<PrivateAssets>all</PrivateAssets>
+			<IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
+		</PackageReference>
+	</ItemGroup>
+
+	<ItemGroup Condition="$(TargetFramework) == 'netstandard2.0'">
+		<PackageReference Include="System.ComponentModel.Annotations" Version="4.5.0" />
 	</ItemGroup>
 
 	<ItemGroup>

src/IntelliTect.AspNetCore.SignalR.SqlServer/Internal/AckHandler.cs

@@ -40,7 +40,7 @@ public void TriggerAck(int id)
         {
             if (_acks.TryRemove(id, out var ack))
             {
-                ack.Tcs.TrySetResult();
+                ack.Tcs.TrySetResult(true);
             }
         }
 
@@ -86,13 +86,13 @@ public void Dispose()
 
         private class AckInfo
         {
-            public TaskCompletionSource Tcs { get; private set; }
+            public TaskCompletionSource<bool> Tcs { get; private set; }
             public DateTime Created { get; private set; }
 
             public AckInfo()
             {
                 Created = DateTime.UtcNow;
-                Tcs = new TaskCompletionSource(TaskCreationOptions.RunContinuationsAsynchronously);
+                Tcs = new TaskCompletionSource<bool>(TaskCreationOptions.RunContinuationsAsynchronously);
             }
         }
     }

src/IntelliTect.AspNetCore.SignalR.SqlServer/Internal/SqlServer/SqlSender.cs

@@ -3,13 +3,8 @@
 
 using System;
 using System.Collections.Generic;
-using System.Data;
-using System.Data.SqlClient;
-using System.Data.SqlTypes;
-using System.Diagnostics;
 using System.Globalization;
 using System.Threading.Tasks;
-using IntelliTect.AspNetCore.SignalR.SqlServer;
 using Microsoft.Data.SqlClient;
 using Microsoft.Extensions.Logging;
 

src/IntelliTect.AspNetCore.SignalR.SqlServer/Internal/Util/MemoryBufferWriter.cs

@@ -137,7 +137,7 @@ public void CopyTo(IBufferWriter<byte> destination)
 
         public override Task CopyToAsync(Stream destination, int bufferSize, CancellationToken cancellationToken)
         {
-            if (_completedSegments == null && _currentSegment is not null)
+            if (_completedSegments == null && _currentSegment != null)
             {
                 // There is only one segment so write without awaiting.
                 return destination.WriteAsync(_currentSegment, 0, _position, cancellationToken);

src/IntelliTect.AspNetCore.SignalR.SqlServer/Internal/Util/NonCapturingTimer.cs

@@ -5,7 +5,7 @@
 using System;
 using System.Threading;
 
-namespace Microsoft.Extensions.Internal
+namespace IntelliTect.AspNetCore.SignalR.SqlServer.Internal
 {
     // A convenience API for interacting with System.Threading.Timer in a way
     // that doesn't capture the ExecutionContext. We should be using this (or equivalent)