From 976459d3e8a8b889cebc2cf281e38b0fbc19c9b9 Mon Sep 17 00:00:00 2001 From: Bond_009 Date: Tue, 17 Dec 2019 23:15:02 +0100 Subject: Rewrite WebSocket handling code --- Emby.Server.Implementations/Session/SessionManager.cs | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) (limited to 'Emby.Server.Implementations/Session/SessionManager.cs') diff --git a/Emby.Server.Implementations/Session/SessionManager.cs b/Emby.Server.Implementations/Session/SessionManager.cs index b1d513dd4..db00ceeb7 100644 --- a/Emby.Server.Implementations/Session/SessionManager.cs +++ b/Emby.Server.Implementations/Session/SessionManager.cs @@ -463,8 +463,7 @@ namespace Emby.Server.Implementations.Session Client = appName, DeviceId = deviceId, ApplicationVersion = appVersion, - Id = key.GetMD5().ToString("N", CultureInfo.InvariantCulture), - ServerId = _appHost.SystemId + Id = key.GetMD5().ToString("N", CultureInfo.InvariantCulture) }; var username = user?.Name; @@ -1024,12 +1023,12 @@ namespace Emby.Server.Implementations.Session private static async Task SendMessageToSession(SessionInfo session, string name, T data, CancellationToken cancellationToken) { - var controllers = session.SessionControllers.ToArray(); - var messageId = Guid.NewGuid().ToString("N", CultureInfo.InvariantCulture); + var controllers = session.SessionControllers; + var messageId = Guid.NewGuid(); foreach (var controller in controllers) { - await controller.SendMessage(name, messageId, data, controllers, cancellationToken).ConfigureAwait(false); + await controller.SendMessage(name, messageId, data, cancellationToken).ConfigureAwait(false); } } @@ -1037,13 +1036,13 @@ namespace Emby.Server.Implementations.Session { IEnumerable GetTasks() { - var messageId = Guid.NewGuid().ToString("N", CultureInfo.InvariantCulture); + var messageId = Guid.NewGuid(); foreach (var session in sessions) { var controllers = session.SessionControllers; foreach (var controller in controllers) { - yield return controller.SendMessage(name, messageId, data, controllers, cancellationToken); + yield return controller.SendMessage(name, messageId, data, cancellationToken); } } } -- cgit v1.2.3 From 5ca68f9623e414b85ddbda1f97895f1b90bd05e0 Mon Sep 17 00:00:00 2001 From: Bond_009 Date: Thu, 26 Dec 2019 20:57:46 +0100 Subject: Fix nullref exception and added logging --- .../HttpServer/HttpListenerHost.cs | 17 +++--- .../HttpServer/WebSocketConnection.cs | 63 ++++++++-------------- .../Session/SessionManager.cs | 3 +- .../Session/SessionWebSocketListener.cs | 2 +- .../Session/WebSocketController.cs | 5 +- .../Net/IWebSocketConnection.cs | 16 +++--- 6 files changed, 41 insertions(+), 65 deletions(-) (limited to 'Emby.Server.Implementations/Session/SessionManager.cs') diff --git a/Emby.Server.Implementations/HttpServer/HttpListenerHost.cs b/Emby.Server.Implementations/HttpServer/HttpListenerHost.cs index 4baf96ab5..ebae4d0b1 100644 --- a/Emby.Server.Implementations/HttpServer/HttpListenerHost.cs +++ b/Emby.Server.Implementations/HttpServer/HttpListenerHost.cs @@ -518,30 +518,29 @@ namespace Emby.Server.Implementations.HttpServer return; } - var url = context.Request.GetDisplayUrl(); - _logger.LogInformation("WS {Url}. UserAgent: {UserAgent}", url, context.Request.Headers[HeaderNames.UserAgent].ToString()); - try { - var webSocket = await context.WebSockets.AcceptWebSocketAsync(null).ConfigureAwait(false); + _logger.LogInformation("WS Request from {IP}", context.Connection.RemoteIpAddress); + + WebSocket webSocket = await context.WebSockets.AcceptWebSocketAsync().ConfigureAwait(false); var connection = new WebSocketConnection( _loggerFactory.CreateLogger(), webSocket, - context.Connection.RemoteIpAddress) + context.Connection.RemoteIpAddress, + context.Request.Query) { - Url = url, - QueryString = context.Request.Query, OnReceive = ProcessWebSocketMessageReceived }; WebSocketConnected?.Invoke(this, new GenericEventArgs(connection)); await connection.ProcessAsync().ConfigureAwait(false); + _logger.LogInformation("WS closed from {IP}", context.Connection.RemoteIpAddress); } - catch (WebSocketException ex) + catch (Exception ex) // Otherwise ASP.Net will ignore the exception { - _logger.LogError(ex, "ProcessWebSocketRequest error"); + _logger.LogError(ex, "WebSocketRequestHandler error"); if (!context.Response.HasStarted) { context.Response.StatusCode = 500; diff --git a/Emby.Server.Implementations/HttpServer/WebSocketConnection.cs b/Emby.Server.Implementations/HttpServer/WebSocketConnection.cs index b4f420e5d..88974f9ab 100644 --- a/Emby.Server.Implementations/HttpServer/WebSocketConnection.cs +++ b/Emby.Server.Implementations/HttpServer/WebSocketConnection.cs @@ -1,4 +1,6 @@ -using System; +#nullable enable + +using System; using System.Buffers; using System.IO.Pipelines; using System.Net; @@ -39,47 +41,38 @@ namespace Emby.Server.Implementations.HttpServer /// /// Initializes a new instance of the class. /// + /// The logger. /// The socket. /// The remote end point. - /// The logger. - /// socket - public WebSocketConnection(ILogger logger, WebSocket socket, IPAddress remoteEndPoint) + /// The query. + public WebSocketConnection( + ILogger logger, + WebSocket socket, + IPAddress? remoteEndPoint, + IQueryCollection query) { - if (socket == null) - { - throw new ArgumentNullException(nameof(socket)); - } - - if (remoteEndPoint != null) - { - throw new ArgumentNullException(nameof(remoteEndPoint)); - } - - if (logger == null) - { - throw new ArgumentNullException(nameof(logger)); - } - + _logger = logger; _socket = socket; RemoteEndPoint = remoteEndPoint; - _logger = logger; + QueryString = query; _jsonOptions = JsonDefaults.GetOptions(); + LastActivityDate = DateTime.Now; } /// - public event EventHandler Closed; + public event EventHandler? Closed; /// /// Gets or sets the remote end point. /// - public IPAddress RemoteEndPoint { get; private set; } + public IPAddress? RemoteEndPoint { get; } /// /// Gets or sets the receive action. /// /// The receive action. - public Func OnReceive { get; set; } + public Func? OnReceive { get; set; } /// /// Gets the last activity date. @@ -87,17 +80,11 @@ namespace Emby.Server.Implementations.HttpServer /// The last activity date. public DateTime LastActivityDate { get; private set; } - /// - /// Gets or sets the URL. - /// - /// The URL. - public string Url { get; set; } - /// /// Gets or sets the query string. /// /// The query string. - public IQueryCollection QueryString { get; set; } + public IQueryCollection QueryString { get; } /// /// Gets the state. @@ -115,11 +102,6 @@ namespace Emby.Server.Implementations.HttpServer /// message public Task SendAsync(WebSocketMessage message, CancellationToken cancellationToken) { - if (message == null) - { - throw new ArgumentNullException(nameof(message)); - } - var json = JsonSerializer.SerializeToUtf8Bytes(message, _jsonOptions); return _socket.SendAsync(json, WebSocketMessageType.Text, true, cancellationToken); } @@ -140,7 +122,7 @@ namespace Emby.Server.Implementations.HttpServer int bytesRead = receiveresult.Count; if (bytesRead == 0) { - continue; + break; } // Tell the PipeWriter how much was read from the Socket @@ -154,6 +136,8 @@ namespace Emby.Server.Implementations.HttpServer break; } + LastActivityDate = DateTime.UtcNow; + if (receiveresult.EndOfMessage) { await ProcessInternal(pipe.Reader).ConfigureAwait(false); @@ -162,10 +146,7 @@ namespace Emby.Server.Implementations.HttpServer if (_socket.State == WebSocketState.Open) { - await _socket.CloseAsync( - WebSocketCloseStatus.NormalClosure, - string.Empty, // REVIEW: human readable explanation as to why the connection is closed. - cancellationToken).ConfigureAwait(false); + _logger.LogWarning("Stopped reading from websocket before it was closed"); } Closed?.Invoke(this, EventArgs.Empty); @@ -175,8 +156,6 @@ namespace Emby.Server.Implementations.HttpServer private async Task ProcessInternal(PipeReader reader) { - LastActivityDate = DateTime.UtcNow; - if (OnReceive == null) { return; diff --git a/Emby.Server.Implementations/Session/SessionManager.cs b/Emby.Server.Implementations/Session/SessionManager.cs index db00ceeb7..0d5df1dad 100644 --- a/Emby.Server.Implementations/Session/SessionManager.cs +++ b/Emby.Server.Implementations/Session/SessionManager.cs @@ -1726,6 +1726,7 @@ namespace Emby.Server.Implementations.Session string.Equals(i.Client, client)); } + /// public SessionInfo GetSessionByAuthenticationToken(AuthenticationInfo info, string deviceId, string remoteEndpoint, string appVersion) { if (info == null) @@ -1733,7 +1734,7 @@ namespace Emby.Server.Implementations.Session throw new ArgumentNullException(nameof(info)); } - var user = info.UserId.Equals(Guid.Empty) + var user = info.UserId == Guid.Empty ? null : _userManager.GetUserById(info.UserId); diff --git a/Emby.Server.Implementations/Session/SessionWebSocketListener.cs b/Emby.Server.Implementations/Session/SessionWebSocketListener.cs index 13b42698d..d4e4ba1f2 100644 --- a/Emby.Server.Implementations/Session/SessionWebSocketListener.cs +++ b/Emby.Server.Implementations/Session/SessionWebSocketListener.cs @@ -56,7 +56,7 @@ namespace Emby.Server.Implementations.Session } else { - _logger.LogWarning("Unable to determine session based on url: {0}", e.Argument.Url); + _logger.LogWarning("Unable to determine session based on query string: {0}", e.Argument.QueryString); } } diff --git a/Emby.Server.Implementations/Session/WebSocketController.cs b/Emby.Server.Implementations/Session/WebSocketController.cs index c17e67da9..536013c7a 100644 --- a/Emby.Server.Implementations/Session/WebSocketController.cs +++ b/Emby.Server.Implementations/Session/WebSocketController.cs @@ -53,11 +53,12 @@ namespace Emby.Server.Implementations.Session private void OnConnectionClosed(object sender, EventArgs e) { - _logger.LogDebug("Removing websocket from session {Session}", _session.Id); var connection = (IWebSocketConnection)sender; + _logger.LogDebug("Removing websocket from session {Session}", _session.Id); _sockets.Remove(connection); - _sessionManager.CloseIfNeeded(_session); + connection.Closed -= OnConnectionClosed; connection.Dispose(); + _sessionManager.CloseIfNeeded(_session); } /// diff --git a/MediaBrowser.Controller/Net/IWebSocketConnection.cs b/MediaBrowser.Controller/Net/IWebSocketConnection.cs index e2a714d5b..d5555884d 100644 --- a/MediaBrowser.Controller/Net/IWebSocketConnection.cs +++ b/MediaBrowser.Controller/Net/IWebSocketConnection.cs @@ -1,3 +1,5 @@ +#nullable enable + using System; using System.Net; using System.Net.WebSockets; @@ -13,7 +15,7 @@ namespace MediaBrowser.Controller.Net /// /// Occurs when [closed]. /// - event EventHandler Closed; + event EventHandler? Closed; /// /// Gets the last activity date. @@ -21,23 +23,17 @@ namespace MediaBrowser.Controller.Net /// The last activity date. DateTime LastActivityDate { get; } - /// - /// Gets or sets the URL. - /// - /// The URL. - string Url { get; set; } - /// /// Gets or sets the query string. /// /// The query string. - IQueryCollection QueryString { get; set; } + IQueryCollection QueryString { get; } /// /// Gets or sets the receive action. /// /// The receive action. - Func OnReceive { get; set; } + Func? OnReceive { get; set; } /// /// Gets the state. @@ -49,7 +45,7 @@ namespace MediaBrowser.Controller.Net /// Gets the remote end point. /// /// The remote end point. - IPAddress RemoteEndPoint { get; } + IPAddress? RemoteEndPoint { get; } /// /// Sends a message asynchronously. -- cgit v1.2.3