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HttpContextStreamWriter.cs
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HttpContextStreamWriter.cs
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#region Copyright notice and license
// Copyright 2019 The 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;
namespace Grpc.AspNetCore.Server.Internal
{
internal class HttpContextStreamWriter<TResponse> : IServerStreamWriter<TResponse>
{
private readonly HttpContextServerCallContext _context;
private readonly Func<TResponse, byte[]> _serializer;
public HttpContextStreamWriter(HttpContextServerCallContext context, Func<TResponse, byte[]> serializer)
{
_context = context;
_serializer = serializer;
}
public WriteOptions WriteOptions
{
get => _context.WriteOptions;
set => _context.WriteOptions = value;
}
public Task WriteAsync(TResponse message)
{
if (message == null)
{
throw new ArgumentNullException(nameof(message));
}
if (_context.CancellationToken.IsCancellationRequested)
{
throw new InvalidOperationException("Cannot write message after request is complete.");
}
return _context.HttpContext.Response.BodyWriter.WriteMessageAsync(message, _context, _serializer);
}
}
}