Replace custom code with Asp.Net Core code

Emby.Server.Implementations/HttpServer/FileWriter.cs

@@ -1,50 +1,43 @@
 using System;
 using System.Collections.Generic;
 using System.Globalization;
+using System.IO;
 using System.Linq;
 using System.Net;
+using System.Runtime.InteropServices;
 using System.Threading;
 using System.Threading.Tasks;
-using Emby.Server.Implementations.IO;
 using MediaBrowser.Model.IO;
 using MediaBrowser.Model.Services;
 using Microsoft.Extensions.Logging;
+using Microsoft.AspNetCore.Http;
 using Microsoft.Net.Http.Headers;
 
 namespace Emby.Server.Implementations.HttpServer
 {
     public class FileWriter : IHttpResult
     {
+        private static readonly CultureInfo UsCulture = CultureInfo.ReadOnly(new CultureInfo("en-US"));
+
+        private static readonly string[] _skipLogExtensions = {
+            ".js",
+            ".html",
+            ".css"
+        };
+
         private readonly IStreamHelper _streamHelper;
-        private ILogger Logger { get; set; }
+        private readonly ILogger _logger;
         private readonly IFileSystem _fileSystem;
 
-        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; }
-        public long TotalContentLength { get; set; }
-
-        public Action OnComplete { get; set; }
-        public Action OnError { get; set; }
-        private static readonly CultureInfo UsCulture = new CultureInfo("en-US");
-        public List<Cookie> Cookies { get; private set; }
-
-        public FileShareMode FileShare { get; set; }
-
         /// <summary>
         /// The _options
         /// </summary>
         private readonly IDictionary<string, string> _options = new Dictionary<string, string>();
-        /// <summary>
-        /// Gets the options.
-        /// </summary>
-        /// <value>The options.</value>
-        public IDictionary<string, string> Headers => _options;
 
-        public string Path { get; set; }
+        /// <summary>
+        /// The _requested ranges
+        /// </summary>
+        private List<KeyValuePair<long, long?>> _requestedRanges;
 
         public FileWriter(string path, string contentType, string rangeHeader, ILogger logger, IFileSystem fileSystem, IStreamHelper streamHelper)
         {
@@ -57,7 +50,7 @@ namespace Emby.Server.Implementations.HttpServer
             _fileSystem = fileSystem;
 
             Path = path;
-            Logger = logger;
+            _logger = logger;
             RangeHeader = rangeHeader;
 
             Headers[HeaderNames.ContentType] = contentType;
@@ -80,6 +73,88 @@ namespace Emby.Server.Implementations.HttpServer
             Cookies = new List<Cookie>();
         }
 
+        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; }
+
+        public long TotalContentLength { get; set; }
+
+        public Action OnComplete { get; set; }
+
+        public Action OnError { get; set; }
+
+        public List<Cookie> Cookies { get; private set; }
+
+        public FileShareMode FileShare { get; set; }
+
+        /// <summary>
+        /// Gets the options.
+        /// </summary>
+        /// <value>The options.</value>
+        public IDictionary<string, string> Headers => _options;
+
+        public string Path { get; set; }
+
+        /// <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 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>
@@ -106,59 +181,10 @@ namespace Emby.Server.Implementations.HttpServer
             var rangeString = $"bytes {RangeStart}-{RangeEnd}/{TotalContentLength}";
             Headers[HeaderNames.ContentRange] = rangeString;
 
-            Logger.LogDebug("Setting range response values for {0}. RangeRequest: {1} Content-Length: {2}, Content-Range: {3}", Path, RangeHeader, lengthString, rangeString);
+            _logger.LogInformation("Setting range response values for {0}. RangeRequest: {1} Content-Length: {2}, Content-Range: {3}", Path, RangeHeader, lengthString, rangeString);
         }
 
-        /// <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;
-            }
-        }
-
-        private static readonly string[] SkipLogExtensions = {
-            ".js",
-            ".html",
-            ".css"
-        };
-
-        public async Task WriteToAsync(IResponse response, CancellationToken cancellationToken)
+        public async Task WriteToAsync(HttpResponse response, CancellationToken cancellationToken)
         {
             try
             {
@@ -176,16 +202,16 @@ namespace Emby.Server.Implementations.HttpServer
                 {
                     var extension = System.IO.Path.GetExtension(path);
 
-                    if (extension == null || !SkipLogExtensions.Contains(extension, StringComparer.OrdinalIgnoreCase))
+                    if (extension == null || !_skipLogExtensions.Contains(extension, StringComparer.OrdinalIgnoreCase))
                     {
-                        Logger.LogDebug("Transmit file {0}", path);
+                        _logger.LogDebug("Transmit file {0}", path);
                     }
 
                     offset = 0;
                     count = 0;
                 }
 
-                await response.TransmitFile(path, offset, count, FileShare, _fileSystem, _streamHelper, cancellationToken).ConfigureAwait(false);
+                await TransmitFile(response.Body, path, offset, count, FileShare, cancellationToken).ConfigureAwait(false);
             }
             finally
             {
@@ -193,18 +219,32 @@ 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
+        public async Task TransmitFile(Stream stream, string path, long offset, long count, FileShareMode fileShareMode, CancellationToken cancellationToken)
         {
-            get => (HttpStatusCode)Status;
-            set => Status = (int)value;
+            var fileOpenOptions = FileOpenOptions.SequentialScan;
+
+            // use non-async filestream along with read due to https://github.com/dotnet/corefx/issues/6039
+            if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+            {
+                fileOpenOptions |= FileOpenOptions.Asynchronous;
+            }
+
+            using (var fs = _fileSystem.GetFileStream(path, FileOpenMode.Open, FileAccessMode.Read, fileShareMode, fileOpenOptions))
+            {
+                if (offset > 0)
+                {
+                    fs.Position = offset;
+                }
+
+                if (count > 0)
+                {
+                    await _streamHelper.CopyToAsync(fs, stream, count, cancellationToken).ConfigureAwait(false);
+                }
+                else
+                {
+                    await fs.CopyToAsync(stream, StreamDefaults.DefaultCopyToBufferSize, cancellationToken).ConfigureAwait(false);
+                }
+            }
         }
     }
 }

Emby.Server.Implementations/HttpServer/HttpListenerHost.cs

@@ -5,7 +5,6 @@ using System.IO;
 using System.Linq;
 using System.Net.Sockets;
 using System.Reflection;
-using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
 using Emby.Server.Implementations.Net;
@@ -30,11 +29,7 @@ namespace Emby.Server.Implementations.HttpServer
 {
     public class HttpListenerHost : IHttpServer, IDisposable
     {
-        private string DefaultRedirectPath { get; set; }
-        public string[] UrlPrefixes { get; private set; }
-
-        public event EventHandler<GenericEventArgs<IWebSocketConnection>> WebSocketConnected;
-
+        private readonly ILogger _logger;
         private readonly IServerConfigurationManager _config;
         private readonly INetworkManager _networkManager;
         private readonly IServerApplicationHost _appHost;
@@ -42,18 +37,15 @@ namespace Emby.Server.Implementations.HttpServer
         private readonly IXmlSerializer _xmlSerializer;
         private readonly IHttpListener _socketListener;
         private readonly Func<Type, Func<string, object>> _funcParseFn;
-
-        public Action<IRequest, IResponse, object>[] ResponseFilters { get; set; }
-
+        private readonly string _defaultRedirectPath;
         private readonly Dictionary<Type, Type> ServiceOperationsMap = new Dictionary<Type, Type>();
-        public static HttpListenerHost Instance { get; protected set; }
-
         private IWebSocketListener[] _webSocketListeners = Array.Empty<IWebSocketListener>();
         private readonly List<IWebSocketConnection> _webSocketConnections = new List<IWebSocketConnection>();
+        private bool _disposed = false;
 
         public HttpListenerHost(
             IServerApplicationHost applicationHost,
-            ILoggerFactory loggerFactory,
+            ILogger<HttpListenerHost> logger,
             IServerConfigurationManager config,
             IConfiguration configuration,
             INetworkManager networkManager,
@@ -62,9 +54,9 @@ namespace Emby.Server.Implementations.HttpServer
             IHttpListener socketListener)
         {
             _appHost = applicationHost;
-            Logger = loggerFactory.CreateLogger("HttpServer");
+            _logger = logger;
             _config = config;
-            DefaultRedirectPath = configuration["HttpListenerHost:DefaultRedirectPath"];
+            _defaultRedirectPath = configuration["HttpListenerHost:DefaultRedirectPath"];
             _networkManager = networkManager;
             _jsonSerializer = jsonSerializer;
             _xmlSerializer = xmlSerializer;
@@ -74,12 +66,20 @@ namespace Emby.Server.Implementations.HttpServer
             _funcParseFn = t => s => JsvReader.GetParseFn(t)(s);
 
             Instance = this;
-            ResponseFilters = Array.Empty<Action<IRequest, IResponse, object>>();
+            ResponseFilters = Array.Empty<Action<IRequest, HttpResponse, object>>();
         }
 
+        public Action<IRequest, HttpResponse, object>[] ResponseFilters { get; set; }
+
+        public static HttpListenerHost Instance { get; protected set; }
+
+        public string[] UrlPrefixes { get; private set; }
+
         public string GlobalResponse { get; set; }
 
-        protected ILogger Logger { get; }
+        public ServiceController ServiceController { get; private set; }
+
+        public event EventHandler<GenericEventArgs<IWebSocketConnection>> WebSocketConnected;
 
         public object CreateInstance(Type type)
         {
@@ -91,7 +91,7 @@ namespace Emby.Server.Implementations.HttpServer
         /// and no more processing should be done.
         /// </summary>
         /// <returns></returns>
-        public void ApplyRequestFilters(IRequest req, IResponse res, object requestDto)
+        public void ApplyRequestFilters(IRequest req, HttpResponse res, object requestDto)
         {
             //Exec all RequestFilter attributes with Priority < 0
             var attributes = GetRequestFilterAttributes(requestDto.GetType());
@@ -145,7 +145,7 @@ namespace Emby.Server.Implementations.HttpServer
                 return;
             }
 
-            var connection = new WebSocketConnection(e.WebSocket, e.Endpoint, _jsonSerializer, Logger)
+            var connection = new WebSocketConnection(e.WebSocket, e.Endpoint, _jsonSerializer, _logger)
             {
                 OnReceive = ProcessWebSocketMessageReceived,
                 Url = e.Url,
@@ -215,16 +215,16 @@ namespace Emby.Server.Implementations.HttpServer
 
                 if (logExceptionStackTrace)
                 {
-                    Logger.LogError(ex, "Error processing request");
+                    _logger.LogError(ex, "Error processing request");
                 }
                 else if (logExceptionMessage)
                 {
-                    Logger.LogError(ex.Message);
+                    _logger.LogError(ex.Message);
                 }
 
                 var httpRes = httpReq.Response;
 
-                if (httpRes.OriginalResponse.HasStarted)
+                if (httpRes.HasStarted)
                 {
                     return;
                 }
@@ -233,11 +233,11 @@ namespace Emby.Server.Implementations.HttpServer
                 httpRes.StatusCode = statusCode;
 
                 httpRes.ContentType = "text/html";
-                await Write(httpRes, NormalizeExceptionMessage(ex.Message)).ConfigureAwait(false);
+                await httpRes.WriteAsync(NormalizeExceptionMessage(ex.Message)).ConfigureAwait(false);
             }
             catch (Exception errorEx)
             {
-                Logger.LogError(errorEx, "Error this.ProcessRequest(context)(Exception while writing error to the response)");
+                _logger.LogError(errorEx, "Error this.ProcessRequest(context)(Exception while writing error to the response)");
             }
         }
 
@@ -431,7 +431,7 @@ namespace Emby.Server.Implementations.HttpServer
                 {
                     httpRes.StatusCode = 503;
                     httpRes.ContentType = "text/plain";
-                    await Write(httpRes, "Server shutting down").ConfigureAwait(false);
+                    await httpRes.WriteAsync("Server shutting down", cancellationToken).ConfigureAwait(false);
                     return;
                 }
 
@@ -439,7 +439,7 @@ namespace Emby.Server.Implementations.HttpServer
                 {
                     httpRes.StatusCode = 400;
                     httpRes.ContentType = "text/plain";
-                    await Write(httpRes, "Invalid host").ConfigureAwait(false);
+                    await httpRes.WriteAsync("Invalid host", cancellationToken).ConfigureAwait(false);
                     return;
                 }
 
@@ -447,7 +447,7 @@ namespace Emby.Server.Implementations.HttpServer
                 {
                     httpRes.StatusCode = 403;
                     httpRes.ContentType = "text/plain";
-                    await Write(httpRes, "Forbidden").ConfigureAwait(false);
+                    await httpRes.WriteAsync("Forbidden", cancellationToken).ConfigureAwait(false);
                     return;
                 }
 
@@ -460,28 +460,27 @@ namespace Emby.Server.Implementations.HttpServer
                 if (string.Equals(httpReq.Verb, "OPTIONS", StringComparison.OrdinalIgnoreCase))
                 {
                     httpRes.StatusCode = 200;
-                    httpRes.AddHeader("Access-Control-Allow-Origin", "*");
-                    httpRes.AddHeader("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, PATCH, OPTIONS");
-                    httpRes.AddHeader("Access-Control-Allow-Headers", "Content-Type, Authorization, Range, X-MediaBrowser-Token, X-Emby-Authorization");
+                    httpRes.Headers.Add("Access-Control-Allow-Origin", "*");
+                    httpRes.Headers.Add("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, PATCH, OPTIONS");
+                    httpRes.Headers.Add("Access-Control-Allow-Headers", "Content-Type, Authorization, Range, X-MediaBrowser-Token, X-Emby-Authorization");
                     httpRes.ContentType = "text/plain";
-                    await Write(httpRes, string.Empty).ConfigureAwait(false);
+                    await httpRes.WriteAsync(string.Empty, cancellationToken).ConfigureAwait(false);
                     return;
                 }
 
                 urlToLog = GetUrlToLog(urlString);
-                Logger.LogDebug("HTTP {HttpMethod} {Url} UserAgent: {UserAgent} \nHeaders: {@Headers}", urlToLog, httpReq.UserAgent ?? string.Empty, httpReq.HttpMethod, httpReq.Headers);
 
                 if (string.Equals(localPath, "/emby/", StringComparison.OrdinalIgnoreCase) ||
                     string.Equals(localPath, "/mediabrowser/", StringComparison.OrdinalIgnoreCase))
                 {
-                    RedirectToUrl(httpRes, DefaultRedirectPath);
+                    httpRes.Redirect(_defaultRedirectPath);
                     return;
                 }
 
                 if (string.Equals(localPath, "/emby", StringComparison.OrdinalIgnoreCase) ||
                     string.Equals(localPath, "/mediabrowser", StringComparison.OrdinalIgnoreCase))
                 {
-                    RedirectToUrl(httpRes, "emby/" + DefaultRedirectPath);
+                    httpRes.Redirect("emby/" + _defaultRedirectPath);
                     return;
                 }
 
@@ -494,9 +493,10 @@ namespace Emby.Server.Implementations.HttpServer
 
                     if (!string.Equals(newUrl, urlString, StringComparison.OrdinalIgnoreCase))
                     {
-                        await Write(httpRes,
+                        await httpRes.WriteAsync(
                             "<!doctype html><html><head><title>Emby</title></head><body>Please update your Emby bookmark to <a href=\"" +
-                            newUrl + "\">" + newUrl + "</a></body></html>").ConfigureAwait(false);
+                            newUrl + "\">" + newUrl + "</a></body></html>",
+                            cancellationToken).ConfigureAwait(false);
                         return;
                     }
                 }
@@ -511,34 +511,35 @@ namespace Emby.Server.Implementations.HttpServer
 
                     if (!string.Equals(newUrl, urlString, StringComparison.OrdinalIgnoreCase))
                     {
-                        await Write(httpRes,
+                        await httpRes.WriteAsync(
                             "<!doctype html><html><head><title>Emby</title></head><body>Please update your Emby bookmark to <a href=\"" +
-                            newUrl + "\">" + newUrl + "</a></body></html>").ConfigureAwait(false);
+                            newUrl + "\">" + newUrl + "</a></body></html>",
+                            cancellationToken).ConfigureAwait(false);
                         return;
                     }
                 }
 
                 if (string.Equals(localPath, "/web", StringComparison.OrdinalIgnoreCase))
                 {
-                    RedirectToUrl(httpRes, DefaultRedirectPath);
+                    httpRes.Redirect(_defaultRedirectPath);
                     return;
                 }
 
                 if (string.Equals(localPath, "/web/", StringComparison.OrdinalIgnoreCase))
                 {
-                    RedirectToUrl(httpRes, "../" + DefaultRedirectPath);
+                    httpRes.Redirect("../" + _defaultRedirectPath);
                     return;
                 }
 
                 if (string.Equals(localPath, "/", StringComparison.OrdinalIgnoreCase))
                 {
-                    RedirectToUrl(httpRes, DefaultRedirectPath);
+                    httpRes.Redirect(_defaultRedirectPath);
                     return;
                 }
 
                 if (string.IsNullOrEmpty(localPath))
                 {
-                    RedirectToUrl(httpRes, "/" + DefaultRedirectPath);
+                    httpRes.Redirect("/" + _defaultRedirectPath);
                     return;
                 }
 
@@ -546,12 +547,12 @@ namespace Emby.Server.Implementations.HttpServer
                 {
                     if (localPath.EndsWith("web/dashboard.html", StringComparison.OrdinalIgnoreCase))
                     {
-                        RedirectToUrl(httpRes, "index.html#!/dashboard.html");
+                        httpRes.Redirect("index.html#!/dashboard.html");
                     }
 
                     if (localPath.EndsWith("web/home.html", StringComparison.OrdinalIgnoreCase))
                     {
-                        RedirectToUrl(httpRes, "index.html");
+                        httpRes.Redirect("index.html");
                     }
                 }
 
@@ -562,7 +563,7 @@ namespace Emby.Server.Implementations.HttpServer
                     {
                         httpRes.StatusCode = 503;
                         httpRes.ContentType = "text/html";
-                        await Write(httpRes, GlobalResponse).ConfigureAwait(false);
+                        await httpRes.WriteAsync(GlobalResponse, cancellationToken).ConfigureAwait(false);
                         return;
                     }
                 }
@@ -571,7 +572,7 @@ namespace Emby.Server.Implementations.HttpServer
 
                 if (handler != null)
                 {
-                    await handler.ProcessRequestAsync(this, httpReq, httpRes, Logger, cancellationToken).ConfigureAwait(false);
+                    await handler.ProcessRequestAsync(this, httpReq, httpRes, _logger, cancellationToken).ConfigureAwait(false);
                 }
                 else
                 {
@@ -598,11 +599,7 @@ namespace Emby.Server.Implementations.HttpServer
                 var elapsed = stopWatch.Elapsed;
                 if (elapsed.TotalMilliseconds > 500)
                 {
-                    Logger.LogWarning("HTTP Response {StatusCode} to {RemoteIp}. Time (slow): {Elapsed:g}. {Url}", httpRes.StatusCode, remoteIp, elapsed, urlToLog);
-                }
-                else
-                {
-                    Logger.LogDebug("HTTP Response {StatusCode} to {RemoteIp}. Time: {Elapsed:g}. {Url}", httpRes.StatusCode, remoteIp, elapsed, urlToLog);
+                    _logger.LogWarning("HTTP Response {StatusCode} to {RemoteIp}. Time (slow): {Elapsed:g}. {Url}", httpRes.StatusCode, remoteIp, elapsed, urlToLog);
                 }
             }
         }
@@ -619,18 +616,11 @@ namespace Emby.Server.Implementations.HttpServer
                 return new ServiceHandler(restPath, contentType);
             }
 
-            Logger.LogError("Could not find handler for {PathInfo}", pathInfo);
+            _logger.LogError("Could not find handler for {PathInfo}", pathInfo);
             return null;
         }
 
-        private static Task Write(IResponse response, string text)
-        {
-            var bOutput = Encoding.UTF8.GetBytes(text);
-            response.OriginalResponse.ContentLength = bOutput.Length;
-            return response.OutputStream.WriteAsync(bOutput, 0, bOutput.Length);
-        }
-
-        private void RedirectToSecureUrl(IHttpRequest httpReq, IResponse httpRes, string url)
+        private void RedirectToSecureUrl(IHttpRequest httpReq, HttpResponse httpRes, string url)
         {
             if (Uri.TryCreate(url, UriKind.Absolute, out Uri uri))
             {
@@ -640,23 +630,11 @@ namespace Emby.Server.Implementations.HttpServer
                     Scheme = "https"
                 };
                 url = builder.Uri.ToString();
-
-                RedirectToUrl(httpRes, url);
             }
-            else
-            {
-                RedirectToUrl(httpRes, url);
-            }
-        }
 
-        public static void RedirectToUrl(IResponse httpRes, string url)
-        {
-            httpRes.StatusCode = 302;
-            httpRes.AddHeader("Location", url);
+            httpRes.Redirect(url);
         }
 
-        public ServiceController ServiceController { get; private set; }
-
         /// <summary>
         /// Adds the rest handlers.
         /// </summary>
@@ -672,9 +650,9 @@ namespace Emby.Server.Implementations.HttpServer
             var types = services.Select(r => r.GetType());
             ServiceController.Init(this, types);
 
-            ResponseFilters = new Action<IRequest, IResponse, object>[]
+            ResponseFilters = new Action<IRequest, HttpResponse, object>[]
             {
-                new ResponseFilter(Logger).FilterResponse
+                new ResponseFilter(_logger).FilterResponse
             };
         }
 
@@ -772,24 +750,23 @@ namespace Emby.Server.Implementations.HttpServer
             return "emby/emby/" + path;
         }
 
-        private bool _disposed;
-        private readonly object _disposeLock = new object();
+        /// <inheritdoc />
+        public void Dispose()
+        {
+            Dispose(true);
+            GC.SuppressFinalize(this);
+        }
 
         protected virtual void Dispose(bool disposing)
         {
             if (_disposed) return;
 
-            lock (_disposeLock)
+            if (disposing)
             {
-                if (_disposed) return;
-
-                _disposed = true;
-
-                if (disposing)
-                {
-                    Stop();
-                }
+                Stop();
             }
+
+            _disposed = true;
         }
 
         /// <summary>
@@ -803,7 +780,7 @@ namespace Emby.Server.Implementations.HttpServer
                 return Task.CompletedTask;
             }
 
-            Logger.LogDebug("Websocket message received: {0}", result.MessageType);
+            _logger.LogDebug("Websocket message received: {0}", result.MessageType);
 
             IEnumerable<Task> GetTasks()
             {
@@ -815,10 +792,5 @@ namespace Emby.Server.Implementations.HttpServer
 
             return Task.WhenAll(GetTasks());
         }
-
-        public void Dispose()
-        {
-            Dispose(true);
-        }
     }
 }

Emby.Server.Implementations/HttpServer/ResponseFilter.cs

@@ -2,6 +2,7 @@ using System;
 using System.Globalization;
 using System.Text;
 using MediaBrowser.Model.Services;
+using Microsoft.AspNetCore.Http;
 using Microsoft.Extensions.Logging;
 using Microsoft.Net.Http.Headers;
 
@@ -9,7 +10,7 @@ namespace Emby.Server.Implementations.HttpServer
 {
     public class ResponseFilter
     {
-        private static readonly CultureInfo UsCulture = new CultureInfo("en-US");
+        private static readonly CultureInfo _usCulture = CultureInfo.ReadOnly(new CultureInfo("en-US"));
         private readonly ILogger _logger;
 
         public ResponseFilter(ILogger logger)
@@ -23,12 +24,12 @@ namespace Emby.Server.Implementations.HttpServer
         /// <param name="req">The req.</param>
         /// <param name="res">The res.</param>
         /// <param name="dto">The dto.</param>
-        public void FilterResponse(IRequest req, IResponse res, object dto)
+        public void FilterResponse(IRequest req, HttpResponse res, object dto)
         {
             // Try to prevent compatibility view
-            res.AddHeader("Access-Control-Allow-Headers", "Accept, Accept-Language, Authorization, Cache-Control, Content-Disposition, Content-Encoding, Content-Language, Content-Length, Content-MD5, Content-Range, Content-Type, Date, Host, If-Match, If-Modified-Since, If-None-Match, If-Unmodified-Since, Origin, OriginToken, Pragma, Range, Slug, Transfer-Encoding, Want-Digest, X-MediaBrowser-Token, X-Emby-Authorization");
-            res.AddHeader("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, PATCH, OPTIONS");
-            res.AddHeader("Access-Control-Allow-Origin", "*");
+            res.Headers.Add("Access-Control-Allow-Headers", "Accept, Accept-Language, Authorization, Cache-Control, Content-Disposition, Content-Encoding, Content-Language, Content-Length, Content-MD5, Content-Range, Content-Type, Date, Host, If-Match, If-Modified-Since, If-None-Match, If-Unmodified-Since, Origin, OriginToken, Pragma, Range, Slug, Transfer-Encoding, Want-Digest, X-MediaBrowser-Token, X-Emby-Authorization");
+            res.Headers.Add("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, PATCH, OPTIONS");
+            res.Headers.Add("Access-Control-Allow-Origin", "*");
 
             if (dto is Exception exception)
             {
@@ -39,7 +40,7 @@ namespace Emby.Server.Implementations.HttpServer
                     var error = exception.Message.Replace(Environment.NewLine, " ");
                     error = RemoveControlCharacters(error);
 
-                    res.AddHeader("X-Application-Error-Code", error);
+                    res.Headers.Add("X-Application-Error-Code", error);
                 }
             }
 
@@ -54,12 +55,11 @@ namespace Emby.Server.Implementations.HttpServer
                 if (hasHeaders.Headers.TryGetValue(HeaderNames.ContentLength, out string contentLength)
                     && !string.IsNullOrEmpty(contentLength))
                 {
-                    var length = long.Parse(contentLength, UsCulture);
+                    var length = long.Parse(contentLength, _usCulture);
 
                     if (length > 0)
                     {
-                        res.OriginalResponse.ContentLength = length;
-                        res.SendChunked = false;
+                        res.ContentLength = length;
                     }
                 }
             }
@@ -72,9 +72,12 @@ namespace Emby.Server.Implementations.HttpServer
         /// <returns>System.String.</returns>
         public static string RemoveControlCharacters(string inString)
         {
-            if (inString == null) return null;
+            if (inString == null)
+            {
+                return null;
+            }
 
-            var newString = new StringBuilder();
+            var newString = new StringBuilder(inString.Length);
 
             foreach (var ch in inString)
             {
@@ -83,6 +86,7 @@ namespace Emby.Server.Implementations.HttpServer
                     newString.Append(ch);
                 }
             }
+
             return newString.ToString();
         }
     }

Emby.Server.Implementations/HttpServer/Security/AuthService.cs

@@ -3,7 +3,6 @@ using System.Linq;
 using MediaBrowser.Common.Net;
 using MediaBrowser.Controller.Configuration;
 using MediaBrowser.Controller.Entities;
-using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Net;
 using MediaBrowser.Controller.Security;
 using MediaBrowser.Controller.Session;
@@ -13,28 +12,23 @@ namespace Emby.Server.Implementations.HttpServer.Security
 {
     public class AuthService : IAuthService
     {
+        private readonly IAuthorizationContext _authorizationContext;
+        private readonly ISessionManager _sessionManager;
         private readonly IServerConfigurationManager _config;
+        private readonly INetworkManager _networkManager;
 
-        public AuthService(IUserManager userManager, IAuthorizationContext authorizationContext, IServerConfigurationManager config, ISessionManager sessionManager, INetworkManager networkManager)
+        public AuthService(
+            IAuthorizationContext authorizationContext,
+            IServerConfigurationManager config,
+            ISessionManager sessionManager,
+            INetworkManager networkManager)
         {
-            AuthorizationContext = authorizationContext;
+            _authorizationContext = authorizationContext;
             _config = config;
-            SessionManager = sessionManager;
-            UserManager = userManager;
-            NetworkManager = networkManager;
+            _sessionManager = sessionManager;
+            _networkManager = networkManager;
         }
 
-        public IUserManager UserManager { get; private set; }
-        public IAuthorizationContext AuthorizationContext { get; private set; }
-        public ISessionManager SessionManager { get; private set; }
-        public INetworkManager NetworkManager { get; private set; }
-
-        /// <summary>
-        /// Redirect the client to a specific URL if authentication failed.
-        /// If this property is null, simply `401 Unauthorized` is returned.
-        /// </summary>
-        public string HtmlRedirect { get; set; }
-
         public void Authenticate(IRequest request, IAuthenticationAttributes authAttribtues)
         {
             ValidateUser(request, authAttribtues);
@@ -43,7 +37,7 @@ namespace Emby.Server.Implementations.HttpServer.Security
         private void ValidateUser(IRequest request, IAuthenticationAttributes authAttribtues)
         {
             // This code is executed before the service
-            var auth = AuthorizationContext.GetAuthorizationInfo(request);
+            var auth = _authorizationContext.GetAuthorizationInfo(request);
 
             if (!IsExemptFromAuthenticationToken(authAttribtues, request))
             {
@@ -80,7 +74,7 @@ namespace Emby.Server.Implementations.HttpServer.Security
                 !string.IsNullOrEmpty(auth.Client) &&
                 !string.IsNullOrEmpty(auth.Device))
             {
-                SessionManager.LogSessionActivity(auth.Client,
+                _sessionManager.LogSessionActivity(auth.Client,
                     auth.Version,
                     auth.DeviceId,
                     auth.Device,
@@ -89,7 +83,9 @@ namespace Emby.Server.Implementations.HttpServer.Security
             }
         }
 
-        private void ValidateUserAccess(User user, IRequest request,
+        private void ValidateUserAccess(
+            User user,
+            IRequest request,
             IAuthenticationAttributes authAttribtues,
             AuthorizationInfo auth)
         {
@@ -101,7 +97,7 @@ namespace Emby.Server.Implementations.HttpServer.Security
                 };
             }
 
-            if (!user.Policy.EnableRemoteAccess && !NetworkManager.IsInLocalNetwork(request.RemoteIp))
+            if (!user.Policy.EnableRemoteAccess && !_networkManager.IsInLocalNetwork(request.RemoteIp))
             {
                 throw new SecurityException("User account has been disabled.")
                 {
@@ -109,11 +105,11 @@ namespace Emby.Server.Implementations.HttpServer.Security
                 };
             }
 
-            if (!user.Policy.IsAdministrator &&
-                !authAttribtues.EscapeParentalControl &&
-                !user.IsParentalScheduleAllowed())
+            if (!user.Policy.IsAdministrator
+                && !authAttribtues.EscapeParentalControl
+                && !user.IsParentalScheduleAllowed())
             {
-                request.Response.AddHeader("X-Application-Error-Code", "ParentalControl");
+                request.Response.Headers.Add("X-Application-Error-Code", "ParentalControl");
 
                 throw new SecurityException("This user account is not allowed access at this time.")
                 {
@@ -183,6 +179,7 @@ namespace Emby.Server.Implementations.HttpServer.Security
                     };
                 }
             }
+
             if (roles.Contains("delete", StringComparer.OrdinalIgnoreCase))
             {
                 if (user == null || !user.Policy.EnableContentDeletion)
@@ -193,6 +190,7 @@ namespace Emby.Server.Implementations.HttpServer.Security
                     };
                 }
             }
+
             if (roles.Contains("download", StringComparer.OrdinalIgnoreCase))
             {
                 if (user == null || !user.Policy.EnableContentDownloading)