Breaking change in AspNetCore 2.2 for SignalR and CORS
To get authenticated SignalR hubs to work, you need to allow credentials in CORS, so your aspnetcore code might look like this: services.AddCors(action => action.AddPolicy(policyName, builder => builder .AllowAnyMethod() .AllowAnyHeader() .AllowAnyOrigin() .AllowCredentials())); As of 2.2. you can no longer combine AllowAnyOrigin and AllowCredentials! You will see a warning in the debug output: warn: Microsoft.AspNetCore.Cors.Infrastructure.CorsService[11] The […]
