diff options
Diffstat (limited to 'MediaBrowser.Server.Implementations/HttpServer/RangeRequestWriter.cs')
| -rw-r--r-- | MediaBrowser.Server.Implementations/HttpServer/RangeRequestWriter.cs | 230 |
1 files changed, 0 insertions, 230 deletions
diff --git a/MediaBrowser.Server.Implementations/HttpServer/RangeRequestWriter.cs b/MediaBrowser.Server.Implementations/HttpServer/RangeRequestWriter.cs deleted file mode 100644 index 7d4cd3b4d..000000000 --- a/MediaBrowser.Server.Implementations/HttpServer/RangeRequestWriter.cs +++ /dev/null @@ -1,230 +0,0 @@ -using MediaBrowser.Model.Logging; -using ServiceStack.Web; -using System; -using System.Collections.Generic; -using System.Globalization; -using System.IO; -using System.Net; -using System.Threading; -using System.Threading.Tasks; -using MediaBrowser.Model.Services; - -namespace MediaBrowser.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"); - - public Func<IDisposable> ResultScope { get; set; } - public List<Cookie> Cookies { get; private set; } - - /// <summary> - /// Additional HTTP Headers - /// </summary> - /// <value>The headers.</value> - public IDictionary<string, string> Headers - { - get { return _options; } - } - - /// <summary> - /// Initializes a new instance of the <see cref="StreamWriter" /> class. - /// </summary> - /// <param name="rangeHeader">The range header.</param> - /// <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> - public RangeRequestWriter(string rangeHeader, Stream source, string contentType, bool isHeadRequest, ILogger logger) - { - if (string.IsNullOrEmpty(contentType)) - { - throw new ArgumentNullException("contentType"); - } - - RangeHeader = rangeHeader; - SourceStream = source; - IsHeadRequest = isHeadRequest; - this._logger = logger; - - ContentType = contentType; - Headers["Content-Type"] = contentType; - Headers["Accept-Ranges"] = "bytes"; - StatusCode = HttpStatusCode.PartialContent; - - Cookies = new List<Cookie>(); - SetRangeValues(); - } - - /// <summary> - /// Sets the range values. - /// </summary> - private void SetRangeValues() - { - var requestedRange = RequestedRanges[0]; - - TotalContentLength = SourceStream.Length; - - // 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; - - // Content-Length is the length of what we're serving, not the original content - Headers["Content-Length"] = RangeLength.ToString(UsCulture); - Headers["Content-Range"] = string.Format("bytes {0}-{1}/{2}", RangeStart, RangeEnd, TotalContentLength); - - if (RangeStart > 0) - { - SourceStream.Position = RangeStart; - } - } - - /// <summary> - /// The _requested ranges - /// </summary> - private List<KeyValuePair<long, long?>> _requestedRanges; - /// <summary> - /// Gets the requested ranges. - /// </summary> - /// <value>The requested ranges.</value> - protected List<KeyValuePair<long, long?>> RequestedRanges - { - get - { - if (_requestedRanges == null) - { - _requestedRanges = new List<KeyValuePair<long, long?>>(); - - // Example: bytes=0-,32-63 - var ranges = RangeHeader.Split('=')[1].Split(','); - - foreach (var range in ranges) - { - var vals = range.Split('-'); - - long start = 0; - long? end = null; - - if (!string.IsNullOrEmpty(vals[0])) - { - start = long.Parse(vals[0], UsCulture); - } - if (!string.IsNullOrEmpty(vals[1])) - { - end = long.Parse(vals[1], UsCulture); - } - - _requestedRanges.Add(new KeyValuePair<long, long?>(start, end)); - } - } - - return _requestedRanges; - } - } - - public async Task WriteToAsync(Stream responseStream, CancellationToken cancellationToken) - { - try - { - // Headers only - if (IsHeadRequest) - { - return; - } - - using (var source = SourceStream) - { - // 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); - } - else - { - await CopyToInternalAsync(source, responseStream, RangeLength).ConfigureAwait(false); - } - } - } - finally - { - if (OnComplete != null) - { - OnComplete(); - } - } - } - - private async Task CopyToInternalAsync(Stream source, Stream destination, long copyLength) - { - var array = new byte[BufferSize]; - int count; - while ((count = await source.ReadAsync(array, 0, array.Length).ConfigureAwait(false)) != 0) - { - var bytesToCopy = Math.Min(count, copyLength); - - await destination.WriteAsync(array, 0, Convert.ToInt32(bytesToCopy)).ConfigureAwait(false); - - copyLength -= bytesToCopy; - - if (copyLength <= 0) - { - break; - } - } - } - - public string ContentType { get; set; } - - public IRequest RequestContext { get; set; } - - public object Response { get; set; } - - public IContentTypeWriter ResponseFilter { get; set; } - - public int Status { get; set; } - - public HttpStatusCode StatusCode - { - get { return (HttpStatusCode)Status; } - set { Status = (int)value; } - } - - public string StatusDescription { get; set; } - - public int PaddingLength { get; set; } - } -}
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