Fix previous issues with progress

Author: darkl

src/netstandard/Tests/WampSharp.Tests.Wampv2/Integration/RpcProgressTests.cs

@@ -141,6 +141,30 @@ public async Task ProgressiveCallsCalleeProxyProgressValueTuples()
             Assert.That(result, Is.EqualTo((10, "10")));
         }
 
+
+        [Test]
+        public async Task ProgressiveCallsCalleeProxyProgressValueTuplesReflectionCallee()
+        {
+            WampPlayground playground = new WampPlayground();
+
+            CallerCallee dualChannel = await playground.GetCallerCalleeDualChannel();
+            IWampChannel calleeChannel = dualChannel.CalleeChannel;
+            IWampChannel callerChannel = dualChannel.CallerChannel;
+
+            await calleeChannel.RealmProxy.Services.RegisterCallee(new LongOpService());
+            ILongOpService proxy = callerChannel.RealmProxy.Services.GetCalleeProxy<ILongOpService>();
+
+            List<(int a, int b)> results = new List<(int a, int b)>();
+            MyProgress<(int a, int b)> progress = new MyProgress<(int a, int b)>(i => results.Add(i));
+
+            var result = await proxy.LongOpValueTuple(10, progress);
+
+            CollectionAssert.AreEquivalent(Enumerable.Range(0, 10).Select(x => (a:x,b:x)), results);
+
+            Assert.That(result, Is.EqualTo((10, "10")));
+        }
+
+
         [Test]
         public async Task ProgressiveCallsCalleeProxyProgressTask()
         {

src/netstandard/WampSharp/WAMP2/V2/Rpc/Callee/Reflection/ProgressiveAsyncMethodInfoRpcOperation.cs

@@ -5,6 +5,7 @@
 using System.Threading;
 using WampSharp.Core.Serialization;
 using WampSharp.Core.Utilities;
+using WampSharp.Core.Utilities.ValueTuple;
 using WampSharp.V2.Core.Contracts;
 
 namespace WampSharp.V2.Rpc
@@ -28,10 +29,12 @@ public ProgressiveAsyncMethodInfoRpcOperation(Func<object> instanceProvider, Met
             mProgressExtractor = WampResultExtractor.GetResultExtractor(this, true);
 
             ParameterInfo progressParameter = method.GetProgressParameter();
+
+            Type progressType = progressParameter.ParameterType.GetGenericArguments()[0];
 
-            if (progressParameter.ParameterType.IsValueType)
+            if (progressType.IsValueTuple())
             {
-                mProgressExtractor = WampResultExtractor.GetValueTupleResultExtractor(progressParameter.ParameterType, progressParameter);
+                mProgressExtractor = WampResultExtractor.GetValueTupleResultExtractor(progressType, progressParameter);
             }
         }