sth

Pi.Hub.Api/Controllers/StatusController.cs

 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Text;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Mvc;
 using Newtonsoft.Json;
+using uPLibrary.Networking.M2Mqtt;
+using uPLibrary.Networking.M2Mqtt.Messages;
 
 namespace Pi.Hub.Api.Controllers
 {
@@ -23,6 +26,15 @@ namespace Pi.Hub.Api.Controllers
         {
             string serialized = JsonConvert.SerializeObject(obj);
             System.IO.File.AppendAllLines("C:\\apps\\msgs.txt", new[] { $",{{\"object\":{serialized},\"timestamp\":\"{DateTime.Now:F}\"}}" });
+
+            var client = new MqttClient("test.mosquitto.org");
+            string[] topic = { "e1s/iot.challange" };
+            byte[] qosLevels = { MqttMsgBase.QOS_LEVEL_AT_LEAST_ONCE };
+            client.Subscribe(topic, qosLevels);
+            client.Connect(Guid.NewGuid().ToString());
+            client.Publish("e1s/iot.challange", Encoding.UTF8.GetBytes(serialized));
+            client.Disconnect();
+
             return new
             {
                 Echo = obj

Pi.Hub.Api/Pi.Hub.Api.csproj

@@ -11,6 +11,7 @@
     <Folder Include="wwwroot\" />
   </ItemGroup>
   <ItemGroup>
+	<PackageReference Include="M2MqttDotnetCore" Version="1.0.6" />
     <PackageReference Include="Microsoft.AspNetCore.All" Version="2.0.0-preview1-final" />
   </ItemGroup>
   <ItemGroup>