From bc657237aa4c541fe0079fcbb7616dbe87bbf0a7 Mon Sep 17 00:00:00 2001
From: Luke Pulverenti <luke.pulverenti@gmail.com>
Date: Fri, 18 Jul 2014 21:28:40 -0400
Subject: consolidate web socket onto one port

---
 .../SocketSharp/WebSocketSharpListener.cs          | 192 +++++++++++++++++++++
 1 file changed, 192 insertions(+)
 create mode 100644 MediaBrowser.Server.Implementations/HttpServer/SocketSharp/WebSocketSharpListener.cs

(limited to 'MediaBrowser.Server.Implementations/HttpServer/SocketSharp/WebSocketSharpListener.cs')

diff --git a/MediaBrowser.Server.Implementations/HttpServer/SocketSharp/WebSocketSharpListener.cs b/MediaBrowser.Server.Implementations/HttpServer/SocketSharp/WebSocketSharpListener.cs
new file mode 100644
index 000000000..cf756d9f2
--- /dev/null
+++ b/MediaBrowser.Server.Implementations/HttpServer/SocketSharp/WebSocketSharpListener.cs
@@ -0,0 +1,192 @@
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Amib.Threading;
+using MediaBrowser.Common.Net;
+using MediaBrowser.Model.Logging;
+using ServiceStack;
+using ServiceStack.Web;
+using WebSocketSharp.Net;
+using WebSocketSharp.Server;
+
+namespace MediaBrowser.Server.Implementations.HttpServer.SocketSharp
+{
+    public class WebSocketSharpListener : IHttpListener
+    {
+        private readonly ConcurrentDictionary<string, string> _localEndPoints = new ConcurrentDictionary<string, string>(StringComparer.OrdinalIgnoreCase);
+        private WebSocketSharp.Server.HttpServer _httpsv;
+
+        private readonly ILogger _logger;
+        private readonly SmartThreadPool _threadPoolManager;
+
+        public WebSocketSharpListener(ILogger logger, SmartThreadPool threadPoolManager)
+        {
+            _logger = logger;
+            _threadPoolManager = threadPoolManager;
+        }
+
+        public IEnumerable<string> LocalEndPoints
+        {
+            get { return _localEndPoints.Keys.ToList(); }
+        }
+
+        public System.Action<Exception, IRequest> ErrorHandler { get; set; }
+
+        public System.Func<IHttpRequest, Uri, Task> RequestHandler { get; set; }
+
+        public Action<WebSocketConnectEventArgs> WebSocketHandler { get; set; }
+
+        public void Start(IEnumerable<string> urlPrefixes)
+        {
+            _httpsv = new WebSocketSharp.Server.HttpServer(8096, false, urlPrefixes.First());
+
+            _httpsv.OnRequest += _httpsv_OnRequest;
+
+            _httpsv.Start();
+        }
+
+        void _httpsv_OnRequest(object sender, HttpRequestEventArgs e)
+        {
+            _threadPoolManager.QueueWorkItem(() => InitTask(e.Context));
+        }
+
+        private void InitTask(HttpListenerContext context)
+        {
+            try
+            {
+                var task = this.ProcessRequestAsync(context);
+                task.ContinueWith(x => HandleError(x.Exception, context), TaskContinuationOptions.OnlyOnFaulted | TaskContinuationOptions.AttachedToParent);
+
+                if (task.Status == TaskStatus.Created)
+                {
+                    task.RunSynchronously();
+                }
+            }
+            catch (Exception ex)
+            {
+                HandleError(ex, context);
+            }
+        }
+
+        private Task ProcessRequestAsync(HttpListenerContext context)
+        {
+            var request = context.Request;
+
+            LogHttpRequest(request);
+
+            if (request.IsWebSocketRequest)
+            {
+                ProcessWebSocketRequest(context);
+                return Task.FromResult(true);
+            }
+
+            if (string.IsNullOrEmpty(context.Request.RawUrl))
+                return ((object)null).AsTaskResult();
+
+            var httpReq = GetRequest(context);
+
+            return RequestHandler(httpReq, request.Url);
+        }
+
+        /// <summary>
+        /// Logs the HTTP request.
+        /// </summary>
+        /// <param name="request">The request.</param>
+        private void LogHttpRequest(HttpListenerRequest request)
+        {
+            var endpoint = request.LocalEndPoint;
+
+            if (endpoint != null)
+            {
+                var address = endpoint.ToString();
+
+                _localEndPoints.GetOrAdd(address, address);
+            }
+
+            LogRequest(_logger, request);
+        }
+
+        private void ProcessWebSocketRequest(HttpListenerContext ctx)
+        {
+            try
+            {
+                var webSocketContext = ctx.AcceptWebSocket(null, null);
+
+                if (WebSocketHandler != null)
+                {
+                    WebSocketHandler(new WebSocketConnectEventArgs
+                    {
+                        WebSocket = new SharpWebSocket(webSocketContext.WebSocket, _logger),
+                        Endpoint = ctx.Request.RemoteEndPoint.ToString()
+                    });
+                }
+            }
+            catch (Exception ex)
+            {
+                _logger.ErrorException("AcceptWebSocketAsync error", ex);
+                ctx.Response.StatusCode = 500;
+                ctx.Response.Close();
+            }
+        }
+
+        private IHttpRequest GetRequest(HttpListenerContext httpContext)
+        {
+            var operationName = httpContext.Request.GetOperationName();
+
+            var req = new WebSocketSharpRequest(httpContext, operationName, RequestAttributes.None, _logger);
+            req.RequestAttributes = req.GetAttributes();
+
+            return req;
+        }
+
+        /// <summary>
+        /// Logs the request.
+        /// </summary>
+        /// <param name="logger">The logger.</param>
+        /// <param name="request">The request.</param>
+        private static void LogRequest(ILogger logger, HttpListenerRequest request)
+        {
+            var log = new StringBuilder();
+
+            //var headers = string.Join(",", request.Headers.AllKeys.Where(i => !string.Equals(i, "cookie", StringComparison.OrdinalIgnoreCase) && !string.Equals(i, "Referer", StringComparison.OrdinalIgnoreCase)).Select(k => k + "=" + request.Headers[k]));
+
+            //log.AppendLine("Ip: " + request.RemoteEndPoint + ". Headers: " + headers);
+
+            var type = request.IsWebSocketRequest ? "Web Socket" : "HTTP " + request.HttpMethod;
+
+            logger.LogMultiline(type + " " + request.Url, LogSeverity.Debug, log);
+        }
+
+        private void HandleError(Exception ex, HttpListenerContext context)
+        {
+            var httpReq = GetRequest(context);
+
+            if (ErrorHandler != null)
+            {
+                ErrorHandler(ex, httpReq);
+            }
+        }
+
+        public void Stop()
+        {
+            _httpsv.Stop();
+        }
+
+        private readonly object _disposeLock = new object();
+        public void Dispose()
+        {
+            lock (_disposeLock)
+            {
+                if (_httpsv != null)
+                {
+                    _httpsv.OnRequest -= _httpsv_OnRequest;
+                    _httpsv.Stop();
+                    _httpsv = null;
+                }
+            }
+        }
+    }
+}
-- 
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