kestrel init

Emby.Server.Implementations/SocketSharp/SharpWebSocket.cs

@@ -0,0 +1,149 @@
+using System;
+using System.Net.WebSockets;
+using System.Threading;
+using System.Threading.Tasks;
+using Emby.Server.Implementations.Net;
+using Microsoft.Extensions.Logging;
+
+namespace Emby.Server.Implementations.SocketSharp
+{
+    public class SharpWebSocket : IWebSocket
+    {
+        /// <summary>
+        /// The logger
+        /// </summary>
+        private readonly ILogger _logger;
+
+        public event EventHandler<EventArgs> Closed;
+
+        /// <summary>
+        /// Gets or sets the web socket.
+        /// </summary>
+        /// <value>The web socket.</value>
+        private SocketHttpListener.WebSocket WebSocket { get; set; }
+
+        private TaskCompletionSource<bool> _taskCompletionSource = new TaskCompletionSource<bool>();
+        private readonly CancellationTokenSource _cancellationTokenSource = new CancellationTokenSource();
+        private bool _disposed = false;
+
+        public SharpWebSocket(SocketHttpListener.WebSocket socket, ILogger logger)
+        {
+            if (socket == null)
+            {
+                throw new ArgumentNullException(nameof(socket));
+            }
+
+            if (logger == null)
+            {
+                throw new ArgumentNullException(nameof(logger));
+            }
+
+            _logger = logger;
+            WebSocket = socket;
+
+            socket.OnMessage += OnSocketMessage;
+            socket.OnClose += OnSocketClose;
+            socket.OnError += OnSocketError;
+        }
+
+        public Task ConnectAsServerAsync()
+            => WebSocket.ConnectAsServer();
+
+        public Task StartReceive()
+        {
+            return _taskCompletionSource.Task;
+        }
+
+        private void OnSocketError(object sender, SocketHttpListener.ErrorEventArgs e)
+        {
+            _logger.LogError("Error in SharpWebSocket: {Message}", e.Message ?? string.Empty);
+
+            // Closed?.Invoke(this, EventArgs.Empty);
+        }
+
+        private void OnSocketClose(object sender, SocketHttpListener.CloseEventArgs e)
+        {
+            _taskCompletionSource.TrySetResult(true);
+
+            Closed?.Invoke(this, EventArgs.Empty);
+        }
+
+        private void OnSocketMessage(object sender, SocketHttpListener.MessageEventArgs e)
+        {
+            if (OnReceiveBytes != null)
+            {
+                OnReceiveBytes(e.RawData);
+            }
+        }
+
+        /// <summary>
+        /// Gets or sets the state.
+        /// </summary>
+        /// <value>The state.</value>
+        public WebSocketState State => WebSocket.ReadyState;
+
+        /// <summary>
+        /// Sends the async.
+        /// </summary>
+        /// <param name="bytes">The bytes.</param>
+        /// <param name="endOfMessage">if set to <c>true</c> [end of message].</param>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <returns>Task.</returns>
+        public Task SendAsync(byte[] bytes, bool endOfMessage, CancellationToken cancellationToken)
+        {
+            return WebSocket.SendAsync(bytes);
+        }
+
+        /// <summary>
+        /// Sends the asynchronous.
+        /// </summary>
+        /// <param name="text">The text.</param>
+        /// <param name="endOfMessage">if set to <c>true</c> [end of message].</param>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <returns>Task.</returns>
+        public Task SendAsync(string text, bool endOfMessage, CancellationToken cancellationToken)
+        {
+            return WebSocket.SendAsync(text);
+        }
+
+        /// <summary>
+        /// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
+        /// </summary>
+        public void Dispose()
+        {
+            Dispose(true);
+            GC.SuppressFinalize(this);
+        }
+
+        /// <summary>
+        /// Releases unmanaged and - optionally - managed resources.
+        /// </summary>
+        /// <param name="dispose"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
+        protected virtual void Dispose(bool dispose)
+        {
+            if (_disposed)
+            {
+                return;
+            }
+
+            if (dispose)
+            {
+                WebSocket.OnMessage -= OnSocketMessage;
+                WebSocket.OnClose -= OnSocketClose;
+                WebSocket.OnError -= OnSocketError;
+
+                _cancellationTokenSource.Cancel();
+
+                WebSocket.CloseAsync().GetAwaiter().GetResult();
+            }
+
+            _disposed = true;
+        }
+
+        /// <summary>
+        /// Gets or sets the receive action.
+        /// </summary>
+        /// <value>The receive action.</value>
+        public Action<byte[]> OnReceiveBytes { get; set; }
+    }
+}