MQTT-protocol

// uses: sgcWebSocket, sgcWebSocket_Protocol_MQTT_Client
TsgcWebSocketClient *WSClient = new TsgcWebSocketClient(this);
WSClient->Host = "www.esegece.com";
WSClient->Port = 15675;

TsgcWSPClient_MQTT *MQTT = new TsgcWSPClient_MQTT(this);
MQTT->Client = WSClient;
MQTT->Authentication->Enabled  = true;
MQTT->Authentication->UserName = "sgc";
MQTT->Authentication->Password = "sgc";

MQTT->OnMQTTConnect = MQTTConnect;
MQTT->OnMQTTPublish = MQTTPublish;

WSClient->Active = true;

void __fastcall TForm1::MQTTPublish(TsgcWSConnection *Connection,
    UnicodeString aTopic, UnicodeString aText,
    TsgcWSMQTTPublishProperties PublishProperties)
{
  Memo1->Lines->Add(aTopic + ": " + aText);
}

MQTT->Publish("sensors/temperature/room1",
  "{\"value\":22.5,\"unit\":\"C\"}", mtqsAtLeastOnce, true);

using esegece.sgcWebSockets;

var WSClient = new TsgcWebSocketClient();
WSClient.Options.Parameters = "/ws";

var MQTT = new TsgcWSPClient_MQTT();
MQTT.Client = WSClient;
MQTT.Authentication.Enabled  = true;
MQTT.Authentication.UserName = "sgc";
MQTT.Authentication.Password = "sgc";
MQTT.HeartBeat.Enabled  = true;
MQTT.HeartBeat.Interval = 5;

MQTT.OnMQTTConnect += (conn, session, code, name, props) => MQTT.Subscribe("sensors/temperature/#");
MQTT.OnMQTTPublish += (conn, topic, text, props) => Console.WriteLine(topic + ": " + text);

WSClient.Host = "www.esegece.com";
WSClient.Port = 15675;
WSClient.Active = true;

MQTT.Publish("sensors/temperature/room1",
  "{\"value\":22.5,\"unit\":\"C\"}", TmqttQoS.mtqsAtLeastOnce, true);