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/**
* 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
* The server will be run in a separate task, so that you can do your own stuff
* in the loop() function.
* Everything else is just like the Static-Page example
*/
// TODO: Configure your WiFi here
#define WIFI_SSID "<your ssid goes here>"
#define WIFI_PSK "<your pre-shared key goes here>"
/** Check if we have multiple cores */
#if CONFIG_FREERTOS_UNICORE
#define ARDUINO_RUNNING_CORE 0
#else
#define ARDUINO_RUNNING_CORE 1
#endif
// Include certificate data (see note above)
#include "cert.h"
#include "private_key.h"
// We will use wifi
#include <WiFi.h>
// Includes for the server
#include <HTTPSServer.hpp>
#include <SSLCert.hpp>
#include <HTTPRequest.hpp>
#include <HTTPResponse.hpp>
// 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
HTTPSServer secureServer = HTTPSServer(&cert);
// Declare some handler functions for the various URLs on the server
void handleRoot(HTTPRequest * req, HTTPResponse * res);
void handle404(HTTPRequest * req, HTTPResponse * res);
// We declare a function that will be the entry-point for the task that is going to be
// created.
void serverTask(void *params);
void setup() {
// For logging
Serial.begin(115200);
// 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("Connected. IP=");
Serial.println(WiFi.localIP());
// Setup the server as a separate task.
Serial.println("Creating server task... ");
// We pass:
// serverTask - the function that should be run as separate task
// "https443" - a name for the task (mainly used for logging)
// 6144 - stack size in byte. If you want up to four clients, you should
// not go below 6kB. If your stack is too small, you will encounter
// Panic and stack canary exceptions, usually during the call to
// SSL_accept.
xTaskCreatePinnedToCore(serverTask, "https443", 6144, NULL, 1, NULL, ARDUINO_RUNNING_CORE);
}
void loop() {
Serial.println("loop()");
delay(5000);
}
void serverTask(void *params) {
// In the separate task we first do everything that we would have done in the
// setup() function, if we would run the server synchronously.
// Note: The second task has its own stack, so you need to think about where
// you create the server's resources and how to make sure that the server
// can access everything it needs to access. Also make sure that concurrent
// access is no problem in your sketch or implement countermeasures like locks
// or mutexes.
// Create nodes
ResourceNode * nodeRoot = new ResourceNode("/", "GET", &handleRoot);
ResourceNode * node404 = new ResourceNode("", "GET", &handle404);
// Add nodes to the server
secureServer.registerNode(nodeRoot);
secureServer.setDefaultNode(node404);
Serial.println("Starting server...");
secureServer.start();
if (secureServer.isRunning()) {
Serial.println("Server ready.");
// "loop()" function of the separate task
while(true) {
// 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 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>");
}
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