if (http.begin(client, host)) {  // HTTP

  http.addHeader("Content-Type", "application/json");
  // Serial.print("[HTTP] GET...n");
  // start connection and send HTTP header
  // int httpCode = http.GET();
  String request = "{ "temperature": 27.0, "humidity": 43 }";
  Serial.print("[HTTP] POST...n");
  int httpCode = http.POST(request);