SignalR地图集线器

Question

I am using SignalR to build Real time application I have added the following code to application start in the global.asax file

'Register the default hubs route: ~/signalr
 RouteTable.Routes.MapHubs()

and I got the following error:

A route named 'signalr.hubs' is already in the route collection. Route names must be unique. Parameter name: name

Answer 1

It's most likely you are calling this twice. Check all your code that this is not the case, including any App_Start code. Do a global search within your app for "MapHubs".

Also check you have only one version of Signal installed (older versions had a different namespace).