ESP32 HTTPClient Library – setReuse

/*
 * Author: Avant Maker
 * Date: February 24, 2025
 * Version: 1.0
 * Description: This example code demonstrates how to 
 * use the ESP32 HTTPClient Library's setReuse to enable 
 * the keep-alive feature for HTTP connections. 
 *
 * 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>

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

void loop() {
    if (WiFi.status() == WL_CONNECTED) {
        HTTPClient http;
        http.setReuse(true); // Enable connection reuse
        http.begin("http://www.httpbin.org/get");

        // First request
        int httpCode = http.GET();
        if (httpCode > 0) {
            String payload = http.getString();
            Serial.println("First Request Response: " + payload);
        } else {
            Serial.println("Error on first request");
        }

        // Second request reusing the connection
        httpCode = http.GET();
        if (httpCode > 0) {
            String payload = http.getString();
            Serial.println("Second Request Response: " + payload);
        } else {
            Serial.println("Error on second request");
        }

        http.end(); // Close the connection manually
    }
    delay(5000); // Wait before next loop
}