Initial checkin of gRPC to third_party/

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

+#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.Threading.Tasks;
+
+namespace Grpc.Core
+{
+    /// <summary>
+    /// Server-side handler for unary call.
+    /// </summary>
+    /// <typeparam name="TRequest">Request message type for this method.</typeparam>
+    /// <typeparam name="TResponse">Response message type for this method.</typeparam>
+    public delegate Task<TResponse> UnaryServerMethod<TRequest, TResponse>(TRequest request, ServerCallContext context)
+        where TRequest : class
+        where TResponse : class;
+
+    /// <summary>
+    /// Server-side handler for client streaming call.
+    /// </summary>
+    /// <typeparam name="TRequest">Request message type for this method.</typeparam>
+    /// <typeparam name="TResponse">Response message type for this method.</typeparam>
+    public delegate Task<TResponse> ClientStreamingServerMethod<TRequest, TResponse>(IAsyncStreamReader<TRequest> requestStream, ServerCallContext context)
+        where TRequest : class
+        where TResponse : class;
+
+    /// <summary>
+    /// Server-side handler for server streaming call.
+    /// </summary>
+    /// <typeparam name="TRequest">Request message type for this method.</typeparam>
+    /// <typeparam name="TResponse">Response message type for this method.</typeparam>
+    public delegate Task ServerStreamingServerMethod<TRequest, TResponse>(TRequest request, IServerStreamWriter<TResponse> responseStream, ServerCallContext context)
+        where TRequest : class
+        where TResponse : class;
+
+    /// <summary>
+    /// Server-side handler for bidi streaming call.
+    /// </summary>
+    /// <typeparam name="TRequest">Request message type for this method.</typeparam>
+    /// <typeparam name="TResponse">Response message type for this method.</typeparam>
+    public delegate Task DuplexStreamingServerMethod<TRequest, TResponse>(IAsyncStreamReader<TRequest> requestStream, IServerStreamWriter<TResponse> responseStream, ServerCallContext context)
+        where TRequest : class
+        where TResponse : class;
+}