1 files changed, 136 insertions, 0 deletions
diff --git a/src/csharp/Grpc.Core/ServerCallHandler.cs b/src/csharp/Grpc.Core/ServerCallHandler.cs
new file mode 100644
index 0000000000..1296947f34
--- /dev/null
+++ b/src/csharp/Grpc.Core/ServerCallHandler.cs
@@ -0,0 +1,136 @@
+#region Copyright notice and license
+
+// Copyright 2015, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#endregion
+
+using System;
+using Grpc.Core.Internal;
+
+namespace Grpc.Core
+{
+    internal interface IServerCallHandler
+    {
+        void StartCall(string methodName, CallSafeHandle call, CompletionQueueSafeHandle cq);
+    }
+
+    internal class UnaryRequestServerCallHandler<TRequest, TResponse> : IServerCallHandler
+    {
+        readonly Method<TRequest, TResponse> method;
+        readonly UnaryRequestServerMethod<TRequest, TResponse> handler;
+
+        public UnaryRequestServerCallHandler(Method<TRequest, TResponse> method, UnaryRequestServerMethod<TRequest, TResponse> handler)
+        {
+            this.method = method;
+            this.handler = handler;
+        }
+
+        public void StartCall(string methodName, CallSafeHandle call, CompletionQueueSafeHandle cq)
+        {
+            var asyncCall = new AsyncCall<TResponse, TRequest>(
+                method.ResponseMarshaller.Serializer,
+                method.RequestMarshaller.Deserializer);
+
+            asyncCall.InitializeServer(call);
+           
+            var finishedTask = asyncCall.ServerSideUnaryRequestCallAsync();
+
+            var request = asyncCall.ReceiveMessageAsync().Result;
+
+            var responseObserver = new ServerStreamingOutputObserver<TResponse, TRequest>(asyncCall);
+            handler(request, responseObserver);
+
+            finishedTask.Wait();
+
+        }
+    }
+
+    internal class StreamingRequestServerCallHandler<TRequest, TResponse> : IServerCallHandler
+    {
+        readonly Method<TRequest, TResponse> method;
+        readonly StreamingRequestServerMethod<TRequest, TResponse> handler;
+
+        public StreamingRequestServerCallHandler(Method<TRequest, TResponse> method, StreamingRequestServerMethod<TRequest, TResponse> handler)
+        {
+            this.method = method;
+            this.handler = handler;
+        }
+
+        public void StartCall(string methodName, CallSafeHandle call, CompletionQueueSafeHandle cq)
+        {
+            var asyncCall = new AsyncCall<TResponse, TRequest>(
+                method.ResponseMarshaller.Serializer,
+                method.RequestMarshaller.Deserializer);
+
+            asyncCall.InitializeServer(call);
+
+            var responseObserver = new ServerStreamingOutputObserver<TResponse, TRequest>(asyncCall);
+            var requestObserver = handler(responseObserver);
+            var finishedTask = asyncCall.ServerSideStreamingRequestCallAsync(requestObserver);
+            finishedTask.Wait();
+        }
+    }
+
+    internal class NoSuchMethodCallHandler : IServerCallHandler
+    {
+        public void StartCall(string methodName, CallSafeHandle call, CompletionQueueSafeHandle cq)
+        {
+            // We don't care about the payload type here.
+            AsyncCall<byte[], byte[]> asyncCall = new AsyncCall<byte[], byte[]>(
+                (payload) => payload, (payload) => payload);
+
+
+            asyncCall.InitializeServer(call);
+
+            var finishedTask = asyncCall.ServerSideStreamingRequestCallAsync(new NullObserver<byte[]>());
+
+            asyncCall.SendStatusFromServerAsync(new Status(StatusCode.Unimplemented, "No such method.")).Wait();
+
+            finishedTask.Wait();
+        }
+    }
+
+    internal class NullObserver<T> : IObserver<T>
+    {
+        public void OnCompleted()
+        {
+        }
+
+        public void OnError(Exception error)
+        {
+        }
+
+        public void OnNext(T value)
+        {
+        }
+
+    }
+}
+