[NF] Filter topics if usefull

IoT/Connector/Data/Mosquitto/Mosquitto.cs

@@ -17,6 +17,7 @@ namespace BlubbFish.Utils.IoT.Connector.Data {
       this.message = "";
       this.p = new Process();
       this.p.StartInfo.FileName = "mosquitto_sub";
+      String topic = "#";
       String args = "-h " + this.settings["server"]+" ";
       if(this.settings.ContainsKey("port")) {
         args += "-p "+ this.settings["port"]+" ";
@@ -30,7 +31,10 @@ namespace BlubbFish.Utils.IoT.Connector.Data {
       if (this.settings.ContainsKey("key")) {
         args += "--key " + this.settings["key"] + " ";
       }
-      this.p.StartInfo.Arguments = args+"-t \"#\" -v -d";
+      if(this.settings.ContainsKey("topic")) {
+        topic = this.settings["topic"];
+      }
+      this.p.StartInfo.Arguments = args+"-t \""+ topic + "\" -v -d";
       this.p.StartInfo.CreateNoWindow = true;
       this.p.StartInfo.UseShellExecute = false;
       this.p.StartInfo.RedirectStandardOutput = true;