Accessing data from a web server

In the previous section, we learned how to connect an existing Wi-Fi hotspot with an ESP32 board. Now, we will try to access a web server from our ESP32 board. Technically, ESP32 APIs adopt the socket programming model to communicate with other systems over a network.

For demo purposes, we will access a web server. We will use Google as a web server target here. We can start by creating the ESP32 project called http_request, with the http_request.c file as the main program. This project can also be found on the official website of the Espressif IDF project, at https://github.com/espressif/esp-idf/tree/master/examples/protocols/http_server.

1. First, we will load the libraries in our project, including the network libraries such as socket.h and dns.h:

#include <string.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h...