#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 responses asynchronously to an underlying AsyncCallServer object. /// </summary> internal class ServerResponseStream<TRequest, TResponse> : IServerStreamWriter<TResponse>, IHasWriteOptions where TRequest : class where TResponse : class { readonly AsyncCallServer<TRequest, TResponse> call; WriteOptions writeOptions; public ServerResponseStream(AsyncCallServer<TRequest, TResponse> call) { this.call = call; } public Task WriteAsync(TResponse message) { return call.SendMessageAsync(message, GetWriteFlags()); } public Task WriteResponseHeadersAsync(Metadata responseHeaders) { return call.SendInitialMetadataAsync(responseHeaders); } public WriteOptions WriteOptions { get { return writeOptions; } set { writeOptions = value; } } private WriteFlags GetWriteFlags() { var options = writeOptions; return options != null ? options.Flags : default(WriteFlags); } } }