ESP32 WiFiClient Library – available

/*
 * Author: Avant Maker
 * Date: February 24, 2025
 * Version: 1.0
 * Description: This example demonstrates how to use 
 * ESP32 WiFiClient Library's available method to
 * check for and read data from www.httpbin.org
 * after sending an HTTP GET request. 
 * It waits for available data and then prints the server’s
 * response to the Serial Monitor, demonstrating real-time
 * data handling.
 *
 * 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>

// 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
const char* host = "www.httpbin.org";
const int port = 80;

WiFiClient client;

void setup() {
    Serial.begin(115200);
    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        Serial.print(".");
    }
    Serial.println("\nWiFi connected");

    if (client.connect(host, port)) {
        Serial.println("Connected to server!");
        client.print("GET /get HTTP/1.1\r\nHost: www.httpbin.org\r\nConnection: close\r\n\r\n");
        
        // Wait for data to become available
        while (client.available() == 0) {
            delay(10); // Small delay to avoid busy-waiting
            if (!client.connected()) {
                Serial.println("Connection lost");
                client.stop();
                return;
            }
        }

        // Read and print available data
        Serial.println("Server response:");
        while (client.available()) {
            char c = client.read();
            Serial.write(c);
        }
        client.stop();
    } else {
        Serial.println("Connection failed");
    }
}

void loop() {
    // Nothing here for this example
}