diff options
Diffstat (limited to 'Emby.Server.Implementations/HttpServer/RangeRequestWriter.cs')
| -rw-r--r-- | Emby.Server.Implementations/HttpServer/RangeRequestWriter.cs | 181 |
1 files changed, 84 insertions, 97 deletions
diff --git a/Emby.Server.Implementations/HttpServer/RangeRequestWriter.cs b/Emby.Server.Implementations/HttpServer/RangeRequestWriter.cs index 8b9028f6b..980c2cd3a 100644 --- a/Emby.Server.Implementations/HttpServer/RangeRequestWriter.cs +++ b/Emby.Server.Implementations/HttpServer/RangeRequestWriter.cs @@ -1,6 +1,7 @@ #pragma warning disable CS1591 using System; +using System.Buffers; using System.Collections.Generic; using System.Globalization; using System.IO; @@ -8,46 +9,17 @@ using System.Net; using System.Threading; using System.Threading.Tasks; using MediaBrowser.Model.Services; -using Microsoft.Extensions.Logging; using Microsoft.Net.Http.Headers; namespace Emby.Server.Implementations.HttpServer { public class RangeRequestWriter : IAsyncStreamWriter, IHttpResult { - /// <summary> - /// Gets or sets the source stream. - /// </summary> - /// <value>The source stream.</value> - private Stream SourceStream { get; set; } - private string RangeHeader { get; set; } - private bool IsHeadRequest { get; set; } - - private long RangeStart { get; set; } - private long RangeEnd { get; set; } - private long RangeLength { get; set; } - private long TotalContentLength { get; set; } - - public Action OnComplete { get; set; } - private readonly ILogger _logger; - private const int BufferSize = 81920; - /// <summary> - /// The _options - /// </summary> private readonly Dictionary<string, string> _options = new Dictionary<string, string>(); - /// <summary> - /// The us culture - /// </summary> - private static readonly CultureInfo UsCulture = new CultureInfo("en-US"); - - /// <summary> - /// Additional HTTP Headers - /// </summary> - /// <value>The headers.</value> - public IDictionary<string, string> Headers => _options; + private List<KeyValuePair<long, long?>> _requestedRanges; /// <summary> /// Initializes a new instance of the <see cref="RangeRequestWriter" /> class. @@ -57,8 +29,7 @@ namespace Emby.Server.Implementations.HttpServer /// <param name="source">The source.</param> /// <param name="contentType">Type of the content.</param> /// <param name="isHeadRequest">if set to <c>true</c> [is head request].</param> - /// <param name="logger">The logger instance.</param> - public RangeRequestWriter(string rangeHeader, long contentLength, Stream source, string contentType, bool isHeadRequest, ILogger logger) + public RangeRequestWriter(string rangeHeader, long contentLength, Stream source, string contentType, bool isHeadRequest) { if (string.IsNullOrEmpty(contentType)) { @@ -68,7 +39,6 @@ namespace Emby.Server.Implementations.HttpServer RangeHeader = rangeHeader; SourceStream = source; IsHeadRequest = isHeadRequest; - this._logger = logger; ContentType = contentType; Headers[HeaderNames.ContentType] = contentType; @@ -79,40 +49,26 @@ namespace Emby.Server.Implementations.HttpServer } /// <summary> - /// Sets the range values. + /// Gets or sets the source stream. /// </summary> - private void SetRangeValues(long contentLength) - { - var requestedRange = RequestedRanges[0]; - - TotalContentLength = contentLength; - - // If the requested range is "0-", we can optimize by just doing a stream copy - if (!requestedRange.Value.HasValue) - { - RangeEnd = TotalContentLength - 1; - } - else - { - RangeEnd = requestedRange.Value.Value; - } - - RangeStart = requestedRange.Key; - RangeLength = 1 + RangeEnd - RangeStart; + /// <value>The source stream.</value> + private Stream SourceStream { get; set; } + private string RangeHeader { get; set; } + private bool IsHeadRequest { get; set; } - Headers[HeaderNames.ContentLength] = RangeLength.ToString(CultureInfo.InvariantCulture); - Headers[HeaderNames.ContentRange] = $"bytes {RangeStart}-{RangeEnd}/{TotalContentLength}"; + private long RangeStart { get; set; } + private long RangeEnd { get; set; } + private long RangeLength { get; set; } + private long TotalContentLength { get; set; } - if (RangeStart > 0 && SourceStream.CanSeek) - { - SourceStream.Position = RangeStart; - } - } + public Action OnComplete { get; set; } /// <summary> - /// The _requested ranges + /// Additional HTTP Headers /// </summary> - private List<KeyValuePair<long, long?>> _requestedRanges; + /// <value>The headers.</value> + public IDictionary<string, string> Headers => _options; + /// <summary> /// Gets the requested ranges. /// </summary> @@ -137,11 +93,12 @@ namespace Emby.Server.Implementations.HttpServer if (!string.IsNullOrEmpty(vals[0])) { - start = long.Parse(vals[0], UsCulture); + start = long.Parse(vals[0], CultureInfo.InvariantCulture); } + if (!string.IsNullOrEmpty(vals[1])) { - end = long.Parse(vals[1], UsCulture); + end = long.Parse(vals[1], CultureInfo.InvariantCulture); } _requestedRanges.Add(new KeyValuePair<long, long?>(start, end)); @@ -152,6 +109,51 @@ namespace Emby.Server.Implementations.HttpServer } } + public string ContentType { get; set; } + + public IRequest RequestContext { get; set; } + + public object Response { get; set; } + + public int Status { get; set; } + + public HttpStatusCode StatusCode + { + get => (HttpStatusCode)Status; + set => Status = (int)value; + } + + /// <summary> + /// Sets the range values. + /// </summary> + private void SetRangeValues(long contentLength) + { + var requestedRange = RequestedRanges[0]; + + TotalContentLength = contentLength; + + // If the requested range is "0-", we can optimize by just doing a stream copy + if (!requestedRange.Value.HasValue) + { + RangeEnd = TotalContentLength - 1; + } + else + { + RangeEnd = requestedRange.Value.Value; + } + + RangeStart = requestedRange.Key; + RangeLength = 1 + RangeEnd - RangeStart; + + Headers[HeaderNames.ContentLength] = RangeLength.ToString(CultureInfo.InvariantCulture); + Headers[HeaderNames.ContentRange] = $"bytes {RangeStart}-{RangeEnd}/{TotalContentLength}"; + + if (RangeStart > 0 && SourceStream.CanSeek) + { + SourceStream.Position = RangeStart; + } + } + public async Task WriteToAsync(Stream responseStream, CancellationToken cancellationToken) { try @@ -167,59 +169,44 @@ namespace Emby.Server.Implementations.HttpServer // If the requested range is "0-", we can optimize by just doing a stream copy if (RangeEnd >= TotalContentLength - 1) { - await source.CopyToAsync(responseStream, BufferSize).ConfigureAwait(false); + await source.CopyToAsync(responseStream, BufferSize, cancellationToken).ConfigureAwait(false); } else { - await CopyToInternalAsync(source, responseStream, RangeLength).ConfigureAwait(false); + await CopyToInternalAsync(source, responseStream, RangeLength, cancellationToken).ConfigureAwait(false); } } } finally { - if (OnComplete != null) - { - OnComplete(); - } + OnComplete?.Invoke(); } } - private static async Task CopyToInternalAsync(Stream source, Stream destination, long copyLength) + private static async Task CopyToInternalAsync(Stream source, Stream destination, long copyLength, CancellationToken cancellationToken) { - var array = new byte[BufferSize]; - int bytesRead; - while ((bytesRead = await source.ReadAsync(array, 0, array.Length).ConfigureAwait(false)) != 0) + var array = ArrayPool<byte>.Shared.Rent(BufferSize); + try { - if (bytesRead == 0) + int bytesRead; + while ((bytesRead = await source.ReadAsync(array, 0, array.Length, cancellationToken).ConfigureAwait(false)) != 0) { - break; - } + var bytesToCopy = Math.Min(bytesRead, copyLength); - var bytesToCopy = Math.Min(bytesRead, copyLength); + await destination.WriteAsync(array, 0, Convert.ToInt32(bytesToCopy), cancellationToken).ConfigureAwait(false); - await destination.WriteAsync(array, 0, Convert.ToInt32(bytesToCopy)).ConfigureAwait(false); + copyLength -= bytesToCopy; - copyLength -= bytesToCopy; - - if (copyLength <= 0) - { - break; + if (copyLength <= 0) + { + break; + } } } - } - - public string ContentType { get; set; } - - public IRequest RequestContext { get; set; } - - public object Response { get; set; } - - public int Status { get; set; } - - public HttpStatusCode StatusCode - { - get => (HttpStatusCode)Status; - set => Status = (int)value; + finally + { + ArrayPool<byte>.Shared.Return(array); + } } } } |