// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System;
using System.IO.Pipelines;
using System.Threading;
using System.Threading.Tasks;
 
namespace Microsoft.AspNetCore.Server.Kestrel.Microbenchmarks;
 
internal sealed class NullPipeWriter : PipeWriter
{
    // Should be large enough for any content attempting to write to the buffer
    private readonly byte[] _buffer = new byte[1024 * 128];
 
    public override void Advance(int bytes)
    {
    }
 
    public override void CancelPendingFlush()
    {
    }
 
    public override void Complete(Exception exception = null)
    {
    }
 
    public override ValueTask<FlushResult> FlushAsync(CancellationToken cancellationToken = default)
    {
        return new ValueTask<FlushResult>(new FlushResult(false, true));
    }
 
    public override Memory<byte> GetMemory(int sizeHint = 0)
    {
        return _buffer;
    }
 
    public override Span<byte> GetSpan(int sizeHint = 0)
    {
        return _buffer;
    }
}