mirror of
https://github.com/jellyfin/jellyfin.git
synced 2024-07-09 07:10:34 +02:00
Synchronize access to data
This commit is contained in:
parent
73fcbe90c0
commit
0b974d09ca
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@ -1,6 +1,5 @@
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using System.Collections.Generic;
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using System;
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Linq;
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using System.Linq;
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using System.Net.WebSockets;
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using System.Net.WebSockets;
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using System.Threading;
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using System.Threading;
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@ -26,9 +25,9 @@ namespace Emby.Server.Implementations.Session
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public readonly int WebSocketLostTimeout = 60;
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public readonly int WebSocketLostTimeout = 60;
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/// <summary>
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/// <summary>
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/// The keep-alive timer factor; controls how often the timer will check on the status of the WebSockets.
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/// The keep-alive interval factor; controls how often the watcher will check on the status of the WebSockets.
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/// </summary>
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/// </summary>
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public readonly double TimerFactor = 0.2;
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public readonly double IntervalFactor = 0.2;
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/// <summary>
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/// <summary>
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/// The ForceKeepAlive factor; controls when a ForceKeepAlive is sent.
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/// The ForceKeepAlive factor; controls when a ForceKeepAlive is sent.
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@ -53,14 +52,24 @@ namespace Emby.Server.Implementations.Session
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private readonly IHttpServer _httpServer;
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private readonly IHttpServer _httpServer;
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/// <summary>
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/// <summary>
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/// The KeepAlive timer.
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/// The KeepAlive cancellation token.
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/// </summary>
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/// </summary>
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private Timer _keepAliveTimer;
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private CancellationTokenSource _keepAliveCancellationToken;
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/// <summary>
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/// Lock used for accesing the KeepAlive cancellation token.
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/// </summary>
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private readonly object _keepAliveLock = new object();
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/// <summary>
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/// <summary>
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/// The WebSocket watchlist.
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/// The WebSocket watchlist.
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/// </summary>
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/// </summary>
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private readonly ConcurrentDictionary<IWebSocketConnection, byte> _webSockets = new ConcurrentDictionary<IWebSocketConnection, byte>();
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private readonly HashSet<IWebSocketConnection> _webSockets = new HashSet<IWebSocketConnection>();
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/// <summary>
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/// Lock used for accesing the WebSockets watchlist.
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/// </summary>
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private readonly object _webSocketsLock = new object();
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/// <summary>
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/// <summary>
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/// Initializes a new instance of the <see cref="SessionWebSocketListener" /> class.
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/// Initializes a new instance of the <see cref="SessionWebSocketListener" /> class.
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@ -113,7 +122,7 @@ namespace Emby.Server.Implementations.Session
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public void Dispose()
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public void Dispose()
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{
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{
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_httpServer.WebSocketConnected -= _serverManager_WebSocketConnected;
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_httpServer.WebSocketConnected -= _serverManager_WebSocketConnected;
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StopKeepAliveTimer();
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StopKeepAlive();
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}
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}
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/// <summary>
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/// <summary>
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@ -140,6 +149,7 @@ namespace Emby.Server.Implementations.Session
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private void OnWebSocketClosed(object sender, EventArgs e)
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private void OnWebSocketClosed(object sender, EventArgs e)
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{
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{
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var webSocket = (IWebSocketConnection) sender;
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var webSocket = (IWebSocketConnection) sender;
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_logger.LogDebug("WebSockets {0} closed.", webSocket);
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RemoveWebSocket(webSocket);
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RemoveWebSocket(webSocket);
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}
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}
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@ -147,15 +157,20 @@ namespace Emby.Server.Implementations.Session
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/// Adds a WebSocket to the KeepAlive watchlist.
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/// Adds a WebSocket to the KeepAlive watchlist.
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/// </summary>
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/// </summary>
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/// <param name="webSocket">The WebSocket to monitor.</param>
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/// <param name="webSocket">The WebSocket to monitor.</param>
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private async void KeepAliveWebSocket(IWebSocketConnection webSocket)
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private async Task KeepAliveWebSocket(IWebSocketConnection webSocket)
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{
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{
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if (!_webSockets.TryAdd(webSocket, 0))
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lock (_webSocketsLock)
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{
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{
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_logger.LogWarning("Multiple attempts to keep alive single WebSocket {0}", webSocket);
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if (!_webSockets.Add(webSocket))
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return;
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{
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_logger.LogWarning("Multiple attempts to keep alive single WebSocket {0}", webSocket);
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return;
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}
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webSocket.Closed += OnWebSocketClosed;
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webSocket.LastKeepAliveDate = DateTime.UtcNow;
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StartKeepAlive();
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}
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}
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webSocket.Closed += OnWebSocketClosed;
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webSocket.LastKeepAliveDate = DateTime.UtcNow;
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// Notify WebSocket about timeout
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// Notify WebSocket about timeout
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try
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try
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@ -164,10 +179,8 @@ namespace Emby.Server.Implementations.Session
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}
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}
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catch (WebSocketException exception)
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catch (WebSocketException exception)
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{
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{
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_logger.LogWarning(exception, "Error sending ForceKeepAlive message to WebSocket.");
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_logger.LogWarning(exception, "Error sending ForceKeepAlive message to WebSocket {0}.", webSocket);
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}
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}
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StartKeepAliveTimer();
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}
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}
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/// <summary>
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/// <summary>
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@ -176,88 +189,131 @@ namespace Emby.Server.Implementations.Session
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/// <param name="webSocket">The WebSocket to remove.</param>
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/// <param name="webSocket">The WebSocket to remove.</param>
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private void RemoveWebSocket(IWebSocketConnection webSocket)
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private void RemoveWebSocket(IWebSocketConnection webSocket)
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{
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{
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webSocket.Closed -= OnWebSocketClosed;
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lock (_webSocketsLock)
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_webSockets.TryRemove(webSocket, out _);
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}
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/// <summary>
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/// Starts the KeepAlive timer.
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/// </summary>
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private void StartKeepAliveTimer()
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{
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if (_keepAliveTimer == null)
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{
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{
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_keepAliveTimer = new Timer(
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if (!_webSockets.Remove(webSocket))
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KeepAliveSockets,
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{
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null,
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_logger.LogWarning("WebSocket {0} not on watchlist.", webSocket);
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TimeSpan.FromSeconds(WebSocketLostTimeout * TimerFactor),
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}
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TimeSpan.FromSeconds(WebSocketLostTimeout * TimerFactor)
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else
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);
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{
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webSocket.Closed -= OnWebSocketClosed;
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}
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}
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}
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}
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}
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/// <summary>
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/// <summary>
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/// Stops the KeepAlive timer.
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/// Starts the KeepAlive watcher.
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/// </summary>
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/// </summary>
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private void StopKeepAliveTimer()
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private void StartKeepAlive()
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{
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{
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if (_keepAliveTimer != null)
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lock (_keepAliveLock)
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{
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{
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_keepAliveTimer.Dispose();
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if (_keepAliveCancellationToken == null)
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_keepAliveTimer = null;
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{
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}
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_keepAliveCancellationToken = new CancellationTokenSource();
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// Start KeepAlive watcher
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foreach (var pair in _webSockets)
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KeepAliveSockets(
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{
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TimeSpan.FromSeconds(WebSocketLostTimeout * IntervalFactor),
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pair.Key.Closed -= OnWebSocketClosed;
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_keepAliveCancellationToken.Token);
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}
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}
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}
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}
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}
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/// <summary>
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/// <summary>
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/// Checks status of KeepAlive of WebSockets.
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/// Stops the KeepAlive watcher.
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/// </summary>
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/// </summary>
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/// <param name="state">The state.</param>
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private void StopKeepAlive()
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private async void KeepAliveSockets(object state)
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{
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{
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var inactive = _webSockets.Keys.Where(i =>
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lock (_keepAliveLock)
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{
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{
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var elapsed = (DateTime.UtcNow - i.LastKeepAliveDate).TotalSeconds;
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if (_keepAliveCancellationToken != null)
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return (elapsed > WebSocketLostTimeout * ForceKeepAliveFactor) && (elapsed < WebSocketLostTimeout);
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{
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});
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_keepAliveCancellationToken.Cancel();
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var lost = _webSockets.Keys.Where(i => (DateTime.UtcNow - i.LastKeepAliveDate).TotalSeconds >= WebSocketLostTimeout);
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_keepAliveCancellationToken = null;
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}
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if (inactive.Any())
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{
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_logger.LogDebug("Sending ForceKeepAlive message to {0} inactive WebSockets.", inactive.Count());
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}
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}
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foreach (var webSocket in inactive)
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lock (_webSocketsLock)
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{
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{
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foreach (var webSocket in _webSockets)
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{
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webSocket.Closed -= OnWebSocketClosed;
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}
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_webSockets.Clear();
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}
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}
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/// <summary>
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/// Checks status of KeepAlive of WebSockets once every the specified interval time.
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/// </summary>
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/// <param name="interval">The interval.</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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private async Task KeepAliveSockets(TimeSpan interval, CancellationToken cancellationToken)
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{
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while (true)
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{
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_logger.LogDebug("Watching {0} WebSockets.", _webSockets.Count());
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IEnumerable<IWebSocketConnection> inactive;
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IEnumerable<IWebSocketConnection> lost;
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lock (_webSocketsLock)
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{
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inactive = _webSockets.Where(i =>
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{
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var elapsed = (DateTime.UtcNow - i.LastKeepAliveDate).TotalSeconds;
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return (elapsed > WebSocketLostTimeout * ForceKeepAliveFactor) && (elapsed < WebSocketLostTimeout);
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});
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lost = _webSockets.Where(i => (DateTime.UtcNow - i.LastKeepAliveDate).TotalSeconds >= WebSocketLostTimeout);
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}
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if (inactive.Any())
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{
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_logger.LogInformation("Sending ForceKeepAlive message to {0} inactive WebSockets.", inactive.Count());
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}
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foreach (var webSocket in inactive)
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{
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try
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{
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await SendForceKeepAlive(webSocket);
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}
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catch (WebSocketException exception)
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{
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_logger.LogInformation(exception, "Error sending ForceKeepAlive message to WebSocket.");
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lost = lost.Append(webSocket);
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}
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}
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lock (_webSocketsLock)
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{
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if (lost.Any())
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{
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_logger.LogInformation("Lost {0} WebSockets.", lost.Count());
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foreach (var webSocket in lost.ToList())
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{
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// TODO: handle session relative to the lost webSocket
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RemoveWebSocket(webSocket);
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}
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}
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if (!_webSockets.Any())
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{
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StopKeepAlive();
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}
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}
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// Wait for next interval
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Task task = Task.Delay(interval, cancellationToken);
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try
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try
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{
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{
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await SendForceKeepAlive(webSocket);
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await task;
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}
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}
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catch (WebSocketException exception)
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catch (TaskCanceledException)
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{
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{
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_logger.LogInformation(exception, "Error sending ForceKeepAlive message to WebSocket.");
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return;
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lost.Append(webSocket);
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}
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}
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}
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}
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if (lost.Any())
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{
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_logger.LogInformation("Lost {0} WebSockets.", lost.Count());
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foreach (var webSocket in lost)
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{
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// TODO: handle session relative to the lost webSocket
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RemoveWebSocket(webSocket);
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}
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}
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if (!_webSockets.Any())
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{
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StopKeepAliveTimer();
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}
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}
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}
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/// <summary>
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/// <summary>
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@ -1,5 +1,4 @@
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using System;
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Collections.Generic;
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using System.Globalization;
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using System.Globalization;
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using System.Linq;
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using System.Linq;
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@ -42,14 +41,19 @@ namespace Emby.Server.Implementations.Syncplay
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/// <summary>
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/// <summary>
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/// The map between sessions and groups.
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/// The map between sessions and groups.
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/// </summary>
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/// </summary>
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private readonly ConcurrentDictionary<string, ISyncplayController> _sessionToGroupMap =
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private readonly Dictionary<string, ISyncplayController> _sessionToGroupMap =
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new ConcurrentDictionary<string, ISyncplayController>(StringComparer.OrdinalIgnoreCase);
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new Dictionary<string, ISyncplayController>(StringComparer.OrdinalIgnoreCase);
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/// <summary>
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/// <summary>
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/// The groups.
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/// The groups.
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/// </summary>
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/// </summary>
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private readonly ConcurrentDictionary<string, ISyncplayController> _groups =
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private readonly Dictionary<string, ISyncplayController> _groups =
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new ConcurrentDictionary<string, ISyncplayController>(StringComparer.OrdinalIgnoreCase);
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new Dictionary<string, ISyncplayController>(StringComparer.OrdinalIgnoreCase);
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/// <summary>
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/// Lock used for accesing any group.
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/// </summary>
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private readonly object _groupsLock = new object();
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private bool _disposed = false;
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private bool _disposed = false;
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@ -175,15 +179,18 @@ namespace Emby.Server.Implementations.Syncplay
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return;
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return;
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}
|
}
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if (IsSessionInGroup(session))
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lock (_groupsLock)
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{
|
{
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LeaveGroup(session);
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if (IsSessionInGroup(session))
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{
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LeaveGroup(session);
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}
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|
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var group = new SyncplayController(_logger, _sessionManager, this);
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_groups[group.GetGroupId().ToString()] = group;
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|
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group.InitGroup(session);
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}
|
}
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|
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var group = new SyncplayController(_logger, _sessionManager, this);
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_groups[group.GetGroupId().ToString()] = group;
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|
|
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group.InitGroup(session);
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|
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}
|
}
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|
|
||||||
/// <inheritdoc />
|
/// <inheritdoc />
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||||||
|
@ -203,67 +210,73 @@ namespace Emby.Server.Implementations.Syncplay
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||||||
return;
|
return;
|
||||||
}
|
}
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|
|
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ISyncplayController group;
|
lock (_groupsLock)
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_groups.TryGetValue(groupId, out group);
|
|
||||||
|
|
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if (group == null)
|
|
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{
|
{
|
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_logger.LogWarning("Syncplaymanager JoinGroup: {0} tried to join group {0} that does not exist.", session.Id, groupId);
|
ISyncplayController group;
|
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|
_groups.TryGetValue(groupId, out group);
|
||||||
|
|
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var error = new GroupUpdate<string>()
|
if (group == null)
|
||||||
{
|
{
|
||||||
Type = GroupUpdateType.GroupNotJoined
|
_logger.LogWarning("Syncplaymanager JoinGroup: {0} tried to join group {0} that does not exist.", session.Id, groupId);
|
||||||
};
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|
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_sessionManager.SendSyncplayGroupUpdate(session.Id.ToString(), error, CancellationToken.None);
|
|
||||||
return;
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|
||||||
}
|
|
||||||
|
|
||||||
if (!HasAccessToItem(user, group.GetPlayingItemId()))
|
var error = new GroupUpdate<string>()
|
||||||
{
|
{
|
||||||
_logger.LogWarning("Syncplaymanager JoinGroup: {0} does not have access to {1}.", session.Id, group.GetPlayingItemId());
|
Type = GroupUpdateType.GroupNotJoined
|
||||||
|
};
|
||||||
|
_sessionManager.SendSyncplayGroupUpdate(session.Id.ToString(), error, CancellationToken.None);
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||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
var error = new GroupUpdate<string>()
|
if (!HasAccessToItem(user, group.GetPlayingItemId()))
|
||||||
{
|
{
|
||||||
GroupId = group.GetGroupId().ToString(),
|
_logger.LogWarning("Syncplaymanager JoinGroup: {0} does not have access to {1}.", session.Id, group.GetPlayingItemId());
|
||||||
Type = GroupUpdateType.LibraryAccessDenied
|
|
||||||
};
|
|
||||||
_sessionManager.SendSyncplayGroupUpdate(session.Id.ToString(), error, CancellationToken.None);
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (IsSessionInGroup(session))
|
var error = new GroupUpdate<string>()
|
||||||
{
|
{
|
||||||
if (GetSessionGroup(session).Equals(groupId)) return;
|
GroupId = group.GetGroupId().ToString(),
|
||||||
LeaveGroup(session);
|
Type = GroupUpdateType.LibraryAccessDenied
|
||||||
}
|
};
|
||||||
|
_sessionManager.SendSyncplayGroupUpdate(session.Id.ToString(), error, CancellationToken.None);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
group.SessionJoin(session, request);
|
if (IsSessionInGroup(session))
|
||||||
|
{
|
||||||
|
if (GetSessionGroup(session).Equals(groupId)) return;
|
||||||
|
LeaveGroup(session);
|
||||||
|
}
|
||||||
|
|
||||||
|
group.SessionJoin(session, request);
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
/// <inheritdoc />
|
/// <inheritdoc />
|
||||||
public void LeaveGroup(SessionInfo session)
|
public void LeaveGroup(SessionInfo session)
|
||||||
{
|
{
|
||||||
// TODO: determine what happens to users that are in a group and get their permissions revoked
|
// TODO: determine what happens to users that are in a group and get their permissions revoked
|
||||||
|
lock (_groupsLock)
|
||||||
ISyncplayController group;
|
|
||||||
_sessionToGroupMap.TryGetValue(session.Id, out group);
|
|
||||||
|
|
||||||
if (group == null)
|
|
||||||
{
|
{
|
||||||
_logger.LogWarning("Syncplaymanager LeaveGroup: {0} does not belong to any group.", session.Id);
|
ISyncplayController group;
|
||||||
|
_sessionToGroupMap.TryGetValue(session.Id, out group);
|
||||||
|
|
||||||
var error = new GroupUpdate<string>()
|
if (group == null)
|
||||||
{
|
{
|
||||||
Type = GroupUpdateType.NotInGroup
|
_logger.LogWarning("Syncplaymanager LeaveGroup: {0} does not belong to any group.", session.Id);
|
||||||
};
|
|
||||||
_sessionManager.SendSyncplayGroupUpdate(session.Id.ToString(), error, CancellationToken.None);
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
group.SessionLeave(session);
|
|
||||||
|
|
||||||
if (group.IsGroupEmpty())
|
var error = new GroupUpdate<string>()
|
||||||
{
|
{
|
||||||
_groups.Remove(group.GetGroupId().ToString(), out _);
|
Type = GroupUpdateType.NotInGroup
|
||||||
|
};
|
||||||
|
_sessionManager.SendSyncplayGroupUpdate(session.Id.ToString(), error, CancellationToken.None);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
group.SessionLeave(session);
|
||||||
|
|
||||||
|
if (group.IsGroupEmpty())
|
||||||
|
{
|
||||||
|
_groups.Remove(group.GetGroupId().ToString(), out _);
|
||||||
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -314,21 +327,25 @@ namespace Emby.Server.Implementations.Syncplay
|
||||||
return;
|
return;
|
||||||
}
|
}
|
||||||
|
|
||||||
ISyncplayController group;
|
lock (_groupsLock)
|
||||||
_sessionToGroupMap.TryGetValue(session.Id, out group);
|
|
||||||
|
|
||||||
if (group == null)
|
|
||||||
{
|
{
|
||||||
_logger.LogWarning("Syncplaymanager HandleRequest: {0} does not belong to any group.", session.Id);
|
ISyncplayController group;
|
||||||
|
_sessionToGroupMap.TryGetValue(session.Id, out group);
|
||||||
|
|
||||||
var error = new GroupUpdate<string>()
|
if (group == null)
|
||||||
{
|
{
|
||||||
Type = GroupUpdateType.NotInGroup
|
_logger.LogWarning("Syncplaymanager HandleRequest: {0} does not belong to any group.", session.Id);
|
||||||
};
|
|
||||||
_sessionManager.SendSyncplayGroupUpdate(session.Id.ToString(), error, CancellationToken.None);
|
var error = new GroupUpdate<string>()
|
||||||
return;
|
{
|
||||||
|
Type = GroupUpdateType.NotInGroup
|
||||||
|
};
|
||||||
|
_sessionManager.SendSyncplayGroupUpdate(session.Id.ToString(), error, CancellationToken.None);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
group.HandleRequest(session, request);
|
||||||
}
|
}
|
||||||
group.HandleRequest(session, request);
|
|
||||||
}
|
}
|
||||||
|
|
||||||
/// <inheritdoc />
|
/// <inheritdoc />
|
||||||
|
|
|
@ -9,7 +9,6 @@ using Microsoft.Extensions.Logging;
|
||||||
namespace MediaBrowser.Api.Syncplay
|
namespace MediaBrowser.Api.Syncplay
|
||||||
{
|
{
|
||||||
[Route("/GetUtcTime", "GET", Summary = "Get UtcTime")]
|
[Route("/GetUtcTime", "GET", Summary = "Get UtcTime")]
|
||||||
[Authenticated]
|
|
||||||
public class GetUtcTime : IReturnVoid
|
public class GetUtcTime : IReturnVoid
|
||||||
{
|
{
|
||||||
// Nothing
|
// Nothing
|
||||||
|
@ -33,13 +32,10 @@ namespace MediaBrowser.Api.Syncplay
|
||||||
public TimeSyncService(
|
public TimeSyncService(
|
||||||
ILogger<TimeSyncService> logger,
|
ILogger<TimeSyncService> logger,
|
||||||
IServerConfigurationManager serverConfigurationManager,
|
IServerConfigurationManager serverConfigurationManager,
|
||||||
IHttpResultFactory httpResultFactory,
|
IHttpResultFactory httpResultFactory)
|
||||||
ISessionManager sessionManager,
|
|
||||||
ISessionContext sessionContext)
|
|
||||||
: base(logger, serverConfigurationManager, httpResultFactory)
|
: base(logger, serverConfigurationManager, httpResultFactory)
|
||||||
{
|
{
|
||||||
_sessionManager = sessionManager;
|
// Do nothing
|
||||||
_sessionContext = sessionContext;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
/// <summary>
|
/// <summary>
|
||||||
|
|
Loading…
Reference in a new issue