ESP8266_Mqtt_Testing

#include <PubSubClient.h>
#include <ESP8266WiFi.h>
#include <WiFiClientSecure.h>

const char* ssid     = "xxxxxx";
const char* password = "xxxxxx";

const char* mqtt_server = "xxxxxx.azure-devices.net";

const char* deviceID = "xxxxxx";
const char* hubUser = "xxxxxx.azure-devices.net/xxxxxx"; // /api-version=2016-11-14
const char* hubPassword = "SharedAccessSignature sr= xxxxxx.azure-devices.net%2Fdevices%2FID0001&sig= xxxxxx%3D&se=1492016410";

WiFiClientSecure wificlient;
PubSubClient clientMqtt(wificlient);

void setup_wifi() {
  delay(10);
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
  //WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());

}

void reconnect()
{
  while (!clientMqtt.connected()) {
    Serial.print("Attempting MQTT connection...");
    // Attempt to connect
    if (clientMqtt.connect(deviceID, hubUser, hubPassword)) {
      Serial.println("connected");

      clientMqtt.publish("devices/xxxxxx/messages/devicebound/#", "00_hello");

      clientMqtt.subscribe("devices/xxxxxx/messages/events/");
    } else {
      Serial.print("failed, rc=");
      Serial.print(clientMqtt.state());
      Serial.println(" try again in 5 seconds");

      delay(5000);
    }
  }
}
void setup() {
  Serial.begin(115200);
  setup_wifi();
  clientMqtt.setClient(wificlient);
  clientMqtt.setServer(mqtt_server, 8883);
}

void loop() {
    if (!clientMqtt.connected()) {
    Serial.print("Loop_Reconnect.!. ");
    reconnect();
  }
  //clientMqtt.loop();
}