ESP32 WebServer Library – uri()

/*
 * Author: Avant Maker
 * Date: April 15, 2025
 * Version: 1.0
 * License: MIT 
 * 
 * Description: 
 * This example demonstrates how to use ESP32 WebServer Library's 
 * uri() method to display the URI that the client requested
 *
 * 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/home/all-about-esp32-arduino-core-library/
 *
 * 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 <WebServer.h>

// Replace with your network credentials
const char* ssid = "your_SSID";          // Replace with your Wi-Fi SSID
const char* password = "your_PASSWORD";  // Replace with your Wi-Fi password

// Create a WebServer object on port 80
WebServer server(80);

// Function to handle requests when the specific path is not found
void handleNotFound() {
  // Get the requested URI using the uri() method
  String requestedUri = server.uri();

  // Prepare the response message
  String message = "AvantMaker uri method demo\n\n";
  message += "URI Requested: ";
  message += requestedUri; // Append the actual URI
  message += "\nMethod: ";
  message += (server.method() == HTTP_GET) ? "GET" : "POST";
  message += "\nArguments: ";
  message += server.args();
  message += "\n";
  for (uint8_t i = 0; i < server.args(); i++) {
    message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
  }

  // Send the response to the client
  server.send(404, "text/plain", message);
  Serial.print("Handled request for URI: ");
  Serial.println(requestedUri);
}

void setup() {
  Serial.begin(115200);
  delay(100);

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

  // Register the handler function for all requests not otherwise handled
  // This is where we will use server.uri()
  server.onNotFound(handleNotFound);

  // Start the server
  server.begin();
  Serial.println("HTTP server started");
}

void loop() {
  // Handle incoming client requests
  server.handleClient();
}