How we can authenticate signalR by using cross domain call? - api

Question

I am working asp.net apis project where i am using signalR and i want to authenticate with authorize attribute.For this i send jwt token and this token add
into signalR pipeline.First i call to Apis to get token.Then i send this token to get signalR connection,But signalR returns unauthorized response.
The below is my code,
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);
// SignalR Auth0 custom configuration.
map.UseOAuthBearerAuthentication(new OAuthBearerAuthenticationOptions()
{
Provider = new OAuthBearerAuthenticationProvider()
{
OnRequestToken = context =>
{
if (context.Request.Path.Value.StartsWith("/signalr"))
{
string bearerToken = context.Request.Query.Get("access_token");
if (bearerToken != null)
{
string[] authorization = new string[] { "bearer " + bearerToken };
context.Request.Headers.Add("Authorization", authorization);
}
}
return null;
}
}
});
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);
});
app.UseWebApi(config);
GlobalHost.DependencyResolver.Register(
typeof(SignalRHUB),
() => new SignalRHUB(new UnitOfWork(new DbFactory())));
//GlobalHost.HubPipeline.RequireAuthentication();
//app.MapSignalR();