diff options
Diffstat (limited to 'MediaBrowser.Networking/HttpServer/NativeWebSocket.cs')
| -rw-r--r-- | MediaBrowser.Networking/HttpServer/NativeWebSocket.cs | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/MediaBrowser.Networking/HttpServer/NativeWebSocket.cs b/MediaBrowser.Networking/HttpServer/NativeWebSocket.cs new file mode 100644 index 000000000..84d163be8 --- /dev/null +++ b/MediaBrowser.Networking/HttpServer/NativeWebSocket.cs @@ -0,0 +1,165 @@ +using MediaBrowser.Common.Net; +using MediaBrowser.Model.Logging; +using System; +using System.Net.WebSockets; +using System.Threading; +using System.Threading.Tasks; +using WebSocketMessageType = MediaBrowser.Common.Net.WebSocketMessageType; +using WebSocketState = MediaBrowser.Common.Net.WebSocketState; + +namespace MediaBrowser.Networking.HttpServer +{ + /// <summary> + /// Class NativeWebSocket + /// </summary> + public class NativeWebSocket : IWebSocket + { + /// <summary> + /// The logger + /// </summary> + private readonly ILogger _logger; + + /// <summary> + /// Gets or sets the web socket. + /// </summary> + /// <value>The web socket.</value> + private System.Net.WebSockets.WebSocket WebSocket { get; set; } + + /// <summary> + /// Initializes a new instance of the <see cref="NativeWebSocket" /> class. + /// </summary> + /// <param name="socket">The socket.</param> + /// <param name="logger">The logger.</param> + /// <exception cref="System.ArgumentNullException">socket</exception> + public NativeWebSocket(System.Net.WebSockets.WebSocket socket, ILogger logger) + { + if (socket == null) + { + throw new ArgumentNullException("socket"); + } + + if (logger == null) + { + throw new ArgumentNullException("logger"); + } + + _logger = logger; + WebSocket = socket; + + Receive(); + } + + /// <summary> + /// Gets or sets the state. + /// </summary> + /// <value>The state.</value> + public WebSocketState State + { + get + { + WebSocketState commonState; + + if (!Enum.TryParse(WebSocket.State.ToString(), true, out commonState)) + { + _logger.Warn("Unrecognized WebSocketState: {0}", WebSocket.State.ToString()); + } + + return commonState; + } + } + + /// <summary> + /// Receives this instance. + /// </summary> + private async void Receive() + { + while (true) + { + byte[] bytes; + + try + { + bytes = await ReceiveBytesAsync(CancellationToken.None).ConfigureAwait(false); + } + catch (WebSocketException ex) + { + _logger.ErrorException("Error reveiving web socket message", ex); + + break; + } + + if (OnReceiveDelegate != null) + { + OnReceiveDelegate(bytes); + } + } + } + + /// <summary> + /// Receives the async. + /// </summary> + /// <param name="cancellationToken">The cancellation token.</param> + /// <returns>Task{WebSocketMessageInfo}.</returns> + /// <exception cref="System.Net.WebSockets.WebSocketException">Connection closed</exception> + private async Task<byte[]> ReceiveBytesAsync(CancellationToken cancellationToken) + { + var bytes = new byte[4096]; + var buffer = new ArraySegment<byte>(bytes); + + var result = await WebSocket.ReceiveAsync(buffer, cancellationToken).ConfigureAwait(false); + + if (result.CloseStatus.HasValue) + { + throw new WebSocketException("Connection closed"); + } + + return buffer.Array; + } + + /// <summary> + /// Sends the async. + /// </summary> + /// <param name="bytes">The bytes.</param> + /// <param name="type">The type.</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, WebSocketMessageType type, bool endOfMessage, CancellationToken cancellationToken) + { + System.Net.WebSockets.WebSocketMessageType nativeType; + + if (!Enum.TryParse(type.ToString(), true, out nativeType)) + { + _logger.Warn("Unrecognized WebSocketMessageType: {0}", type.ToString()); + } + + return WebSocket.SendAsync(new ArraySegment<byte>(bytes), nativeType, true, cancellationToken); + } + + /// <summary> + /// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources. + /// </summary> + public void Dispose() + { + Dispose(true); + } + + /// <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 (dispose) + { + WebSocket.Dispose(); + } + } + + /// <summary> + /// Gets or sets the receive action. + /// </summary> + /// <value>The receive action.</value> + public Action<byte[]> OnReceiveDelegate { get; set; } + } +} |
