#if NETCOREAPP3_1 using Microsoft.AspNetCore.Builder; using Microsoft.AspNetCore.Routing; namespace MQTTnet.AspNetCore { public static class EndpointRouterExtensions { public static void MapMqtt(this IEndpointRouteBuilder endpoints, string pattern) { endpoints.MapConnectionHandler(pattern, options => { options.WebSockets.SubProtocolSelector = MqttSubProtocolSelector.SelectSubProtocol; }); } } } #endif