SignalR 1.0.1 Cross-domain request (CORS) with Chrome

Question

I am trying to implement the Cross-domain calls with SignalR 1.0.1 with Chrome (Ver 25.0.1364.172). As I have my UI in one host (localhost:16881) and the \'service\' in anot

Answer 1

Here's what you need to do:

1. Remove jQuery.support.cors = true
2. Remove <add name="Access-Control-Allow-Origin" value="http://localhost:16881" />

Then it should work fine.

Answer 2

You don't need to use

jQuery.support.cors = true;

Instead you can enable CORS support on your Startup class on Configuration method. Here is some of the example:

        // Branch the pipeline here for requests that start with "/signalr"
        app.Map("/signalr", map =>
        {
            // Setup the CORS middleware to run before SignalR.
            // By default this will allow all origins. You can 
            // configure the set of origins and/or http verbs by
            // providing a cors options with a different policy.
            map.UseCors(CorsOptions.AllowAll);
            var hubConfiguration = new HubConfiguration 
            {
                // You can enable JSONP by uncommenting line below.
                // JSONP requests are insecure but some older browsers (and some
                // versions of IE) require JSONP to work cross domain
                // EnableJSONP = true
            };
            // Run the SignalR pipeline. We're not using MapSignalR
            // since this branch already runs under the "/signalr"
            // path.
            map.RunSignalR(hubConfiguration);
        });