Fixes SignalR bug ... but without any explanation

Yavsc/Hubs/ChatHub.cs

@@ -38,6 +38,7 @@ namespace Yavsc
             if (Context.User != null)
             {
                 isAuth = Context.User.Identity.IsAuthenticated;
+                userName = Context.User.Identity.Name;
                 var group = isAuth ?
                   "authenticated" : "anonymous";
                 // Log ("Cx: " + group);
@@ -54,8 +55,9 @@ namespace Yavsc
                             UserAgent = Context.Request.Headers["User-Agent"],
                             Connected = true
                         });
-                        db.SaveChanges(user.Id);
+                        db.SaveChanges();
                     }
+                    
                 }
             }
             else Groups.Add(Context.ConnectionId, "anonymous");
@@ -76,16 +78,16 @@ namespace Yavsc
                     var cx = db.Connections.SingleOrDefault(c => c.ConnectionId == Context.ConnectionId);
                     if (cx != null)
                     {
-                        var user = db.Users.Single(u => u.UserName == userName);
                         if (stopCalled)
                         {
+                            var user = db.Users.Single(u => u.UserName == userName);
                             user.Connections.Remove(cx);
                         }
                         else
                         {
                             cx.Connected = false;
                         }
-                        db.SaveChanges(user.Id);
+                        db.SaveChanges();
                     }
                 }
             }
@@ -108,7 +110,7 @@ namespace Yavsc
                         if (cx != null)
                         {
                             cx.Connected = true;
-                            db.SaveChanges(user.Id);
+                            db.SaveChanges();
                         }
                         else cx = new Connection { ConnectionId = Context.ConnectionId,
                             UserAgent = Context.Request.Headers["User-Agent"],
@@ -145,9 +147,10 @@ namespace Yavsc
                 var cx = db.Connections.SingleOrDefault(c=>c.ConnectionId == Context.ConnectionId);
                 if (cx!=null) {
                     db.Connections.Remove(cx);
-                    db.SaveChanges(cx.ApplicationUserId); 
+                    db.SaveChanges(); 
                 }
             }
+                
         }
 
     }

Yavsc/Startup/Startup.cs

@@ -16,6 +16,7 @@ using Microsoft.AspNet.Localization;
 using Microsoft.AspNet.Mvc;
 using Microsoft.AspNet.Mvc.Filters;
 using Microsoft.AspNet.Mvc.Razor;
+using Microsoft.AspNet.Http.Extensions;
 using Microsoft.Data.Entity;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
@@ -23,7 +24,6 @@ using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.OptionsModel;
 using Microsoft.Extensions.PlatformAbstractions;
 using Microsoft.Net.Http.Headers;
-using Yavsc.Extensions;
 using Yavsc.Formatters;
 using Yavsc.Models;
 using Yavsc.Services;
@@ -232,7 +232,6 @@ namespace Yavsc
         IOptions<RequestLocalizationOptions> localizationOptions,
         IOptions<OAuth2AppSettings> oauth2SettingsContainer,
         RoleManager<IdentityRole> roleManager,
-        UserManager<ApplicationUser> userManager,
         IAuthorizationService authorizationService,
          ILoggerFactory loggerFactory)
         {
@@ -321,7 +320,7 @@ namespace Yavsc
                 {
                     foreach (var c in db.Connections)
                         db.Connections.Remove(c);
-                    db.SaveChanges("Startup");
+                    db.SaveChanges();
                 }
             });
 
@@ -336,14 +335,11 @@ namespace Yavsc
 
             ConfigureOAuthApp(app, SiteSetup);
             ConfigureFileServerApp(app, SiteSetup, env, authorizationService);
-             app.UseWhen(context => context.Request.Path.StartsWithSegments("/api"),
+            ConfigureWebSocketsApp(app, SiteSetup, env);
-               branch =>
-               {
-                ConfigureWebSocketsApp(app, SiteSetup, env);
-               });
             ConfigureWorkflow(app, SiteSetup);
             app.UseRequestLocalization(localizationOptions.Value, (RequestCulture) new RequestCulture((string)"fr"));
             app.UseSession();
+  
             app.UseMvc(routes =>
             {
                 routes.MapRoute(