ESP32_HTTPS_IFTTT.ino

#include <Arduino.h>

#include <WiFi.h>
#include <WiFiMulti.h>

#include <HTTPClient.h>

#include <WiFiClientSecure.h>

WiFiMulti WiFiMulti;

const char* ssid = "REPLACE_WTIH_YOUR_SSID";
const char* password = "REPLACE_WTIH_YOUR_PASSWORD";

void setup() {

  Serial.begin(115200);
  // Serial.setDebugOutput(true);

  Serial.println();
  Serial.println();
  Serial.println();

  WiFi.mode(WIFI_STA);
  WiFiMulti.addAP(ssid, password);

  // wait for WiFi connection
  Serial.print("Waiting for WiFi to connect...");
  while ((WiFiMulti.run() != WL_CONNECTED)) {
    Serial.print(".");
  }
  Serial.println(" connected");

}

void loop() {
  WiFiClientSecure *client = new WiFiClientSecure;
  if(client) {
    //client -> setCACert(rootCACertificate);

    {
      // Add a scoping block for HTTPClient https to make sure it is destroyed before WiFiClientSecure *client is 
      HTTPClient https;
  
      Serial.print("[HTTPS] begin...\n");
      if (https.begin(*client, "https://maker.ifttt.com/trigger/REPLACE_WITH_YOUR_EVENT_NAME/with/key/REPLACE_WITH_YOUR_WEBHOOKS_IFTTT_API_KEY")) {  // HTTPS
        Serial.print("[HTTPS] POST...\n");
        // Specify content-type header
        https.addHeader("Content-Type", "application/x-www-form-urlencoded");
        // Data to send with HTTP POST
        String httpsRequestData = "value1=" + String(random(40)) + "&value2=" + String(random(40))+ "&value3=" + String(random(40));           
        // Send HTTP POST request
        int httpCode = https.POST(httpsRequestData);

        // httpCode will be negative on error
        if (httpCode > 0) {
          // HTTP header has been send and Server response header has been handled
          Serial.printf("[HTTPS] POST... code: %d\n", httpCode);
  
          // file found at server
          if (httpCode == HTTP_CODE_OK || httpCode == HTTP_CODE_MOVED_PERMANENTLY) {
            String payload = https.getString();
            Serial.println(payload);
          }
        } else {
          Serial.printf("[HTTPS] POST... failed, error: %s\n", https.errorToString(httpCode).c_str());
        }
  
        https.end();
      } else {
        Serial.printf("[HTTPS] Unable to connect\n");
      }

      // End extra scoping block
    }
  
    delete client;
  } else {
    Serial.println("Unable to create client");
  }

  Serial.println();
  Serial.println("Waiting 10s before the next round...");
  delay(10000);
}