Bond_009
5 years ago
parent
15634a1913
commit
04f826e50c
@ -1,39 +0,0 @@
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#pragma warning disable CS1591
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using System;
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using System.Threading;
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using System.Threading.Tasks;
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using Emby.Server.Implementations.Net;
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using MediaBrowser.Model.Services;
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using Microsoft.AspNetCore.Http;
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namespace Emby.Server.Implementations.HttpServer
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{
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public interface IHttpListener : IDisposable
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{
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/// <summary>
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/// Gets or sets the error handler.
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/// </summary>
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/// <value>The error handler.</value>
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Func<Exception, IRequest, bool, bool, Task> ErrorHandler { get; set; }
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/// <summary>
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/// Gets or sets the request handler.
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/// </summary>
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/// <value>The request handler.</value>
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Func<IHttpRequest, string, string, string, CancellationToken, Task> RequestHandler { get; set; }
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/// <summary>
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/// Gets or sets the web socket handler.
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/// </summary>
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/// <value>The web socket handler.</value>
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Action<WebSocketConnectEventArgs> WebSocketConnected { get; set; }
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/// <summary>
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/// Stops this instance.
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/// </summary>
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Task Stop();
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Task ProcessWebSocketRequest(HttpContext ctx);
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}
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}
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@ -1,29 +0,0 @@
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using System;
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using Microsoft.AspNetCore.Http;
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namespace Emby.Server.Implementations.Net
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{
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public class WebSocketConnectEventArgs : EventArgs
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{
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/// <summary>
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/// Gets or sets the URL.
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/// </summary>
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/// <value>The URL.</value>
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public string Url { get; set; }
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/// <summary>
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/// Gets or sets the query string.
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/// </summary>
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/// <value>The query string.</value>
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public IQueryCollection QueryString { get; set; }
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/// <summary>
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/// Gets or sets the web socket.
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/// </summary>
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/// <value>The web socket.</value>
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public IWebSocket WebSocket { get; set; }
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/// <summary>
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/// Gets or sets the endpoint.
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/// </summary>
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/// <value>The endpoint.</value>
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public string Endpoint { get; set; }
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}
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}
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@ -1,135 +0,0 @@
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Net.WebSockets;
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using System.Threading;
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using System.Threading.Tasks;
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using Emby.Server.Implementations.HttpServer;
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using Emby.Server.Implementations.Net;
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using MediaBrowser.Model.Services;
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using Microsoft.AspNetCore.Http;
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using Microsoft.AspNetCore.Http.Extensions;
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using Microsoft.Extensions.Logging;
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using Microsoft.Net.Http.Headers;
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namespace Emby.Server.Implementations.SocketSharp
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{
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public class WebSocketSharpListener : IHttpListener
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{
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private readonly ILogger _logger;
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private CancellationTokenSource _disposeCancellationTokenSource = new CancellationTokenSource();
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private CancellationToken _disposeCancellationToken;
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public WebSocketSharpListener(ILogger<WebSocketSharpListener> logger)
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{
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_logger = logger;
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_disposeCancellationToken = _disposeCancellationTokenSource.Token;
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}
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public Func<Exception, IRequest, bool, bool, Task> ErrorHandler { get; set; }
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public Func<IHttpRequest, string, string, string, CancellationToken, Task> RequestHandler { get; set; }
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public Action<WebSocketConnectEventArgs> WebSocketConnected { get; set; }
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private static void LogRequest(ILogger logger, HttpRequest request)
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{
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var url = request.GetDisplayUrl();
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logger.LogInformation("WS {Url}. UserAgent: {UserAgent}", url, request.Headers[HeaderNames.UserAgent].ToString());
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}
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public async Task ProcessWebSocketRequest(HttpContext ctx)
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{
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try
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{
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LogRequest(_logger, ctx.Request);
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var endpoint = ctx.Connection.RemoteIpAddress.ToString();
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var url = ctx.Request.GetDisplayUrl();
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var webSocketContext = await ctx.WebSockets.AcceptWebSocketAsync(null).ConfigureAwait(false);
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var socket = new SharpWebSocket(webSocketContext, _logger);
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WebSocketConnected(new WebSocketConnectEventArgs
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{
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Url = url,
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QueryString = ctx.Request.Query,
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WebSocket = socket,
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Endpoint = endpoint
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});
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WebSocketReceiveResult result;
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var message = new List<byte>();
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do
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{
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var buffer = WebSocket.CreateServerBuffer(4096);
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result = await webSocketContext.ReceiveAsync(buffer, _disposeCancellationToken);
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message.AddRange(buffer.Array.Take(result.Count));
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if (result.EndOfMessage)
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{
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socket.OnReceiveBytes(message.ToArray());
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message.Clear();
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}
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} while (socket.State == WebSocketState.Open && result.MessageType != WebSocketMessageType.Close);
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if (webSocketContext.State == WebSocketState.Open)
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{
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await webSocketContext.CloseAsync(
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result.CloseStatus ?? WebSocketCloseStatus.NormalClosure,
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result.CloseStatusDescription,
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_disposeCancellationToken).ConfigureAwait(false);
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}
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socket.Dispose();
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, "AcceptWebSocketAsync error");
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if (!ctx.Response.HasStarted)
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{
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ctx.Response.StatusCode = 500;
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}
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}
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}
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public Task Stop()
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{
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_disposeCancellationTokenSource.Cancel();
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return Task.CompletedTask;
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}
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/// <summary>
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/// Releases the unmanaged resources and disposes of the managed resources used.
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/// </summary>
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public void Dispose()
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{
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Dispose(true);
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GC.SuppressFinalize(this);
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}
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private bool _disposed;
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/// <summary>
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/// Releases the unmanaged resources and disposes of the managed resources used.
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/// </summary>
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/// <param name="disposing">Whether or not the managed resources should be disposed.</param>
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protected virtual void Dispose(bool disposing)
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{
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if (_disposed)
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{
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return;
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}
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if (disposing)
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{
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Stop().GetAwaiter().GetResult();
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}
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_disposed = true;
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}
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}
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}
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@ -1,102 +0,0 @@
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Net.WebSockets;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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using MediaBrowser.Model.Net;
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using MediaBrowser.Model.Serialization;
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using Microsoft.Extensions.Logging;
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using UtfUnknown;
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namespace Emby.Server.Implementations.WebSockets
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{
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public class WebSocketManager
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{
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private readonly IWebSocketHandler[] _webSocketHandlers;
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private readonly IJsonSerializer _jsonSerializer;
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private readonly ILogger<WebSocketManager> _logger;
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private const int BufferSize = 4096;
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public WebSocketManager(IWebSocketHandler[] webSocketHandlers, IJsonSerializer jsonSerializer, ILogger<WebSocketManager> logger)
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{
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_webSocketHandlers = webSocketHandlers;
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_jsonSerializer = jsonSerializer;
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_logger = logger;
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}
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public async Task OnWebSocketConnected(WebSocket webSocket)
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{
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var taskCompletionSource = new TaskCompletionSource<bool>();
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var cancellationToken = new CancellationTokenSource().Token;
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WebSocketReceiveResult result;
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var message = new List<byte>();
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// Keep listening for incoming messages, otherwise the socket closes automatically
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do
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{
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var buffer = WebSocket.CreateServerBuffer(BufferSize);
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result = await webSocket.ReceiveAsync(buffer, cancellationToken).ConfigureAwait(false);
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message.AddRange(buffer.Array.Take(result.Count));
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if (result.EndOfMessage)
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{
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await ProcessMessage(message.ToArray(), taskCompletionSource).ConfigureAwait(false);
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message.Clear();
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}
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} while (!taskCompletionSource.Task.IsCompleted &&
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webSocket.State == WebSocketState.Open &&
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result.MessageType != WebSocketMessageType.Close);
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if (webSocket.State == WebSocketState.Open)
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{
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await webSocket.CloseAsync(
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result.CloseStatus ?? WebSocketCloseStatus.NormalClosure,
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result.CloseStatusDescription,
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cancellationToken).ConfigureAwait(false);
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}
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}
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private async Task ProcessMessage(byte[] messageBytes, TaskCompletionSource<bool> taskCompletionSource)
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{
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var charset = CharsetDetector.DetectFromBytes(messageBytes).Detected?.EncodingName;
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var message = string.Equals(charset, "utf-8", StringComparison.OrdinalIgnoreCase)
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? Encoding.UTF8.GetString(messageBytes, 0, messageBytes.Length)
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: Encoding.ASCII.GetString(messageBytes, 0, messageBytes.Length);
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// All messages are expected to be valid JSON objects
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if (!message.StartsWith("{", StringComparison.OrdinalIgnoreCase))
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{
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_logger.LogDebug("Received web socket message that is not a json structure: {Message}", message);
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return;
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}
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try
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{
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var info = _jsonSerializer.DeserializeFromString<WebSocketMessage<object>>(message);
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_logger.LogDebug("Websocket message received: {0}", info.MessageType);
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var tasks = _webSocketHandlers.Select(handler => Task.Run(() =>
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{
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try
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{
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handler.ProcessMessage(info, taskCompletionSource).ConfigureAwait(false);
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, "{HandlerType} failed processing WebSocket message {MessageType}",
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handler.GetType().Name, info.MessageType ?? string.Empty);
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}
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}));
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await Task.WhenAll(tasks);
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, "Error processing web socket message");
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}
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}
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}
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}
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