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#region Copyright notice and license
// Copyright 2015 gRPC authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#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);
}
}
}
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