| #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) |
| { |
| var taskSource = new AsyncCompletionTaskSource<object>(); |
| call.StartSendMessage(message, GetWriteFlags(), taskSource.CompletionDelegate); |
| return taskSource.Task; |
| } |
| |
| public Task WriteResponseHeadersAsync(Metadata responseHeaders) |
| { |
| var taskSource = new AsyncCompletionTaskSource<object>(); |
| call.StartSendInitialMetadata(responseHeaders, taskSource.CompletionDelegate); |
| return taskSource.Task; |
| } |
| |
| public WriteOptions WriteOptions |
| { |
| get |
| { |
| return writeOptions; |
| } |
| |
| set |
| { |
| writeOptions = value; |
| } |
| } |
| |
| private WriteFlags GetWriteFlags() |
| { |
| var options = writeOptions; |
| return options != null ? options.Flags : default(WriteFlags); |
| } |
| } |
| } |