ESP32 HTTPClient Library – resetCookieJar

/*
 * Author: Avant Maker
 * Date: February 24, 2025
 * Version: 1.0
 * Description: This example demonstrates how to use the 
 * resetCookieJar method to reset cookies with the ESP32 
 * HTTPClient Library. The ESP32 connects to a WiFi network, 
 * makes an HTTP request to www.httpbin.org (a useful testing site),
 * sets up a cookie jar, and then resets it. 
 *
 * License: MIT 
 * 
 * Code Source: This example code is sourced from the Comprehensive 
 * Guide to the ESP32 Arduino Core Library, accessible on 
 * AvantMaker.com. For additional code examples and in-depth 
 * documentation related to the ESP32 Arduino Core Library, 
 * please visit:
 *
 * https://avantmaker.com/references/esp32-arduino-core-index/
 *
 * AvantMaker.com, your premier destination for all things 
 * DIY, AI, IoT, Smart Home, and STEM projects. We are dedicated 
 * to empowering makers, learners, and enthusiasts with the resources
 * they need to bring their innovative ideas to life.
 */

#include <WiFi.h>
#include <HTTPClient.h>

// Wi-Fi credentials
const char* ssid = "YOUR_SSID";          // Replace with your Wi-Fi SSID
const char* password = "YOUR_PASSWORD"; // Replace with your Wi-Fi password

void setup() {
    Serial.begin(115200);
    delay(1000);

    // Connect to Wi-Fi
    WiFi.begin(ssid, password);
    Serial.print("Connecting to Wi-Fi...");
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        Serial.print(".");
    }
    Serial.println("\nConnected to Wi-Fi");
}

void loop() {
    if (WiFi.status() == WL_CONNECTED) {
        HTTPClient http;
        CookieJar cookieJar; // Create a cookie jar instance

        // Set the cookie jar for the HTTPClient instance
        http.setCookieJar(&cookieJar);
        Serial.println("Cookie jar set.");

        // Make an HTTP GET request to httpbin.org
        http.begin("http://www.httpbin.org/cookies/set?test_cookie=example_value");
        int httpCode = http.GET();

        if (httpCode > 0) {
            Serial.println("Request successful. Cookies may have been stored.");
            String payload = http.getString();
            Serial.println("Response: " + payload);
        } else {
            Serial.println("Request failed with code: " + String(httpCode));
        }

        // Verify cookies are set by making another request
        http.begin("http://www.httpbin.org/cookies");
        httpCode = http.GET();
        if (httpCode > 0) {
            String response = http.getString();
            Serial.println("Response after setting cookies:");
            Serial.println(response);
        }  

        // Reset the cookie jar
        http.resetCookieJar();
        Serial.println("Cookie jar reset. No further cookies will be stored.");

        // Make another request to demonstrate the reset
        http.begin("http://www.httpbin.org/cookies");
        httpCode = http.GET();

        if (httpCode > 0) {
            Serial.println("Second request successful. No cookies should be sent.");
            String payload = http.getString();
            Serial.println("Response: " + payload);
        } else {
            Serial.println("Second request failed with code: " + String(httpCode));
        }

        http.end(); // Free resources
    }

    delay(30000); // Wait 30 seconds before repeating
}