add mono CreateWebRequest workaround

MediaBrowser.Api/Playback/Hls/DynamicHlsService.cs

@@ -445,6 +445,8 @@ namespace MediaBrowser.Api.Playback.Hls
             var segmentFilename = Path.GetFileName(segmentPath);
 
             while (!cancellationToken.IsCancellationRequested)
+            {
+                try
                 {
                     using (var fileStream = GetPlaylistFileStream(playlistPath))
                     {
@@ -462,6 +464,11 @@ namespace MediaBrowser.Api.Playback.Hls
                             }
                         }
                     }
+                }
+                catch (IOException)
+                {
+                    // May get an error if the file is locked
+                }
 
                 await Task.Delay(100, cancellationToken).ConfigureAwait(false);
             }

MediaBrowser.Common.Implementations/HttpClientManager/HttpClientManager.cs

@@ -105,6 +105,23 @@ namespace MediaBrowser.Common.Implementations.HttpClientManager
             return client;
         }
 
+        private WebRequest CreateWebRequest(string url)
+        {
+            try
+            {
+                return WebRequest.Create(url);
+            }
+            catch (NotSupportedException)
+            {
+                //Webrequest creation does fail on MONO randomly when using WebRequest.Create
+                //the issue occurs in the GetCreator method here: http://www.oschina.net/code/explore/mono-2.8.1/mcs/class/System/System.Net/WebRequest.cs
+
+                var type = Type.GetType("System.Net.HttpRequestCreator, System, Version=4.0.0.0,Culture=neutral, PublicKeyToken=b77a5c561934e089");
+                var creator = Activator.CreateInstance(type, nonPublic: true) as IWebRequestCreate;
+                return creator.Create(new Uri(url)) as HttpWebRequest;
+            }
+        }
+
         private WebRequest GetRequest(HttpRequestOptions options, string method, bool enableHttpCompression)
         {
             var request = WebRequest.Create(options.Url);

MediaBrowser.Server.Implementations/ServerManager/WebSocketConnection.cs

@@ -179,7 +179,8 @@ namespace MediaBrowser.Server.Implementations.ServerManager
 
             if (!message.StartsWith("{", StringComparison.OrdinalIgnoreCase))
             {
-                _logger.Error("Received web socket message that is not a json structure: " + message);
+                // This info is useful sometimes but also clogs up the log
+                //_logger.Error("Received web socket message that is not a json structure: " + message);
                 return;
             }