Initial checkin of gRPC to third_party/

third_party/grpc/src/csharp/Grpc.Core/IAsyncStreamWriter.cs

 #region Copyright notice and license
-// Protocol Buffers - Google's data interchange format
-// Copyright 2015 Google Inc.  All rights reserved.
-// https://developers.google.com/protocol-buffers/
+
+// 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
 
-namespace Google.Protobuf
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Grpc.Core
 {
     /// <summary>
-    /// Generic interface for a deeply cloneable type.
+    /// A writable stream of messages.
     /// </summary>
-    /// <remarks>
-    /// <para>
-    /// All generated messages implement this interface, but so do some non-message types.
-    /// Additionally, due to the type constraint on <c>T</c> in <see cref="IMessage{T}"/>,
-    /// it is simpler to keep this as a separate interface.
-    /// </para>
-    /// </remarks>
-    /// <typeparam name="T">The type itself, returned by the <see cref="Clone"/> method.</typeparam>
-    public interface IDeepCloneable<T>
+    /// <typeparam name="T">The message type.</typeparam>
+    public interface IAsyncStreamWriter<T>
     {
         /// <summary>
-        /// Creates a deep clone of this object.
+        /// Writes a single asynchronously. Only one write can be pending at a time.
         /// </summary>
-        /// <returns>A deep clone of this object.</returns>
-        T Clone();
+        /// <param name="message">the message to be written. Cannot be null.</param>
+        Task WriteAsync(T message);
+
+        /// <summary>
+        /// Write options that will be used for the next write.
+        /// If null, default options will be used.
+        /// Once set, this property maintains its value across subsequent
+        /// writes.
+        /// </summary>
+        WriteOptions WriteOptions { get; set; }
     }
 }