examples/ESP32_WiFi/Static-Page/Static-Page.ino

/**
   Example for the ESP32 HTTP(S) Webserver

   IMPORTANT NOTE:
   To run this script, your need to
    1) Enter your WiFi SSID and PSK below this comment
    2) Make sure to have certificate data available. You will find a
       shell script and instructions to do so in the library folder
       under extras/

   This script will install an HTTPS Server on your ESP32 with the following
   functionalities:
    - Show simple page on web server root
    - 404 for everything else
*/

// TODO: Configure your WiFi here
#define WIFI_SSID "<your ssid goes here>"
#define WIFI_PSK  "<your pre-shared key goes here>"

// Include certificate data (see note above)
#include "cert.h"
#include "private_key.h"

// Binary data for the favicon
#include "favicon.h"

// We will use wifi
#include <WiFi.h>

#include <HTTPS_Server_Generic.h>

// The HTTPS Server comes in a separate namespace. For easier use, include it here.
using namespace httpsserver;

// Create an SSL certificate object from the files included above
SSLCert cert = SSLCert(
                 example_crt_DER, example_crt_DER_len,
                 example_key_DER, example_key_DER_len
               );

// Create an SSL-enabled server that uses the certificate
// The contstructor takes some more parameters, but we go for default values here.
HTTPSServer secureServer = HTTPSServer(&cert);

// Declare some handler functions for the various URLs on the server
// The signature is always the same for those functions. They get two parameters,
// which are pointers to the request data (read request body, headers, ...) and
// to the response data (write response, set status code, ...)
void handleRoot(HTTPRequest * req, HTTPResponse * res);
void handleFavicon(HTTPRequest * req, HTTPResponse * res);
void handle404(HTTPRequest * req, HTTPResponse * res);

void setup()
{
  // For logging
  Serial.begin(115200);

  while (!Serial && millis() < 5000);

  ///////////////////////////////////////////////

  Serial.print("\nStarting Static-Page on ");
  Serial.println(ARDUINO_BOARD);
  Serial.println(HTTPS_SERVER_GENERIC_VERSION);

  ///////////////////////////////////

  // Connect to WiFi
  Serial.println("Setting up WiFi");
  WiFi.begin(WIFI_SSID, WIFI_PSK);

  while (WiFi.status() != WL_CONNECTED)
  {
    Serial.print(".");
    delay(500);
  }

  ///////////////////////////////////

  Serial.print(F("HTTPS WiFiWebServer is @ IP : "));
  Serial.println(WiFi.localIP());

  Serial.print(F("To access, use https://"));
  Serial.println(WiFi.localIP());

  ///////////////////////////////////////////////

  // For every resource available on the server, we need to create a ResourceNode
  // The ResourceNode links URL and HTTP method to a handler function
  ResourceNode * nodeRoot    = new ResourceNode("/", "GET", &handleRoot);
  ResourceNode * nodeFavicon = new ResourceNode("/favicon.ico", "GET", &handleFavicon);
  ResourceNode * node404     = new ResourceNode("", "GET", &handle404);

  // Add the root node to the server
  secureServer.registerNode(nodeRoot);

  // Add the favicon
  secureServer.registerNode(nodeFavicon);

  // Add the 404 not found node to the server.
  // The path is ignored for the default node.
  secureServer.setDefaultNode(node404);

  Serial.println("Starting server...");
  secureServer.start();

  if (secureServer.isRunning())
  {
    Serial.println("Server ready.");
  }
}

void loop()
{
  // This call will let the server do its work
  secureServer.loop();

  // Other code would go here...
  delay(1);
}

void handleRoot(HTTPRequest * req, HTTPResponse * res)
{
  // Status code is 200 OK by default.
  // We want to deliver a simple HTML page, so we send a corresponding content type:
  res->setHeader("Content-Type", "text/html");

  // The response implements the Print interface, so you can use it just like
  // you would write to Serial etc.
  res->println("<!DOCTYPE html>");
  res->println("<html>");
  res->println("<head><title>Hello World!</title></head>");
  res->println("<body>");
  res->println("<h1>Hello World!</h1>");
  res->print("<p>Your server is running for ");
  // A bit of dynamic data: Show the uptime
  res->print((int)(millis() / 1000), DEC);
  res->println(" seconds.</p>");
  res->println("</body>");
  res->println("</html>");
}

void handleFavicon(HTTPRequest * req, HTTPResponse * res)
{
  // Set Content-Type
  res->setHeader("Content-Type", "image/vnd.microsoft.icon");
  // Write data from header file
  res->write(FAVICON_DATA, FAVICON_LENGTH);
}

void handle404(HTTPRequest * req, HTTPResponse * res)
{
  // Discard request body, if we received any
  // We do this, as this is the default node and may also server POST/PUT requests
  req->discardRequestBody();

  // Set the response status
  res->setStatusCode(404);
  res->setStatusText("Not Found");

  // Set content type of the response
  res->setHeader("Content-Type", "text/html");

  // Write a tiny HTTP page
  res->println("<!DOCTYPE html>");
  res->println("<html>");
  res->println("<head><title>Not Found</title></head>");
  res->println("<body><h1>404 Not Found</h1><p>The requested resource was not found on this server.</p></body>");
  res->println("</html>");
}