A new version C# API based on async/await

1 files changed, 63 insertions, 0 deletions

diff --git a/src/csharp/Grpc.Core/Internal/ClientRequestStream.cs b/src/csharp/Grpc.Core/Internal/ClientRequestStream.cs
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+++ b/src/csharp/Grpc.Core/Internal/ClientRequestStream.cs
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+#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 System.Threading.Tasks;
+using Grpc.Core.Internal;
+
+namespace Grpc.Core.Internal
+{
+    /// <summary>
+    /// Writes requests asynchronously to an underlying AsyncCall object.
+    /// </summary>
+    internal class ClientRequestStream<TRequest, TResponse> : IClientStreamWriter<TRequest>
+    {
+        readonly AsyncCall<TRequest, TResponse> call;
+
+        public ClientRequestStream(AsyncCall<TRequest, TResponse> call)
+        {
+            this.call = call;
+        }
+
+        public Task Write(TRequest message)
+        {
+            var taskSource = new AsyncCompletionTaskSource<object>();
+            call.StartSendMessage(message, taskSource.CompletionDelegate);
+            return taskSource.Task;
+        }
+
+        public Task Close()
+        {
+            var taskSource = new AsyncCompletionTaskSource<object>();
+            call.StartSendCloseFromClient(taskSource.CompletionDelegate);
+            return taskSource.Task;
+        }
+    }
+}