168 lines
5.3 KiB
C++
168 lines
5.3 KiB
C++
/**
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* Example for the ESP32 HTTP(S) Webserver
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*
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* IMPORTANT NOTE:
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* To run this script, your need to
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* 1) Enter your WiFi SSID and PSK below this comment
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* 2) Make sure to have certificate data available. You will find a
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* shell script and instructions to do so in the library folder
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* under extras/
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*
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* This script will install an HTTPS Server on your ESP32 with the following
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* functionalities:
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* - Show simple page on web server root
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* - 404 for everything else
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* The server will be run in a separate task, so that you can do your own stuff
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* in the loop() function.
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* Everything else is just like the Static-Page example
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*/
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// TODO: Configure your WiFi here
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#define WIFI_SSID "<your ssid goes here>"
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#define WIFI_PSK "<your pre-shared key goes here>"
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/** Check if we have multiple cores */
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#if CONFIG_FREERTOS_UNICORE
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#define ARDUINO_RUNNING_CORE 0
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#else
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#define ARDUINO_RUNNING_CORE 1
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#endif
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// Include certificate data (see note above)
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#include "cert.h"
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#include "private_key.h"
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// We will use wifi
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#include <WiFi.h>
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// Includes for the server
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#include <HTTPSServer.hpp>
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#include <SSLCert.hpp>
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#include <HTTPRequest.hpp>
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#include <HTTPResponse.hpp>
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// The HTTPS Server comes in a separate namespace. For easier use, include it here.
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using namespace httpsserver;
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// Create an SSL certificate object from the files included above
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SSLCert cert = SSLCert(
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example_crt_DER, example_crt_DER_len,
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example_key_DER, example_key_DER_len
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);
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// Create an SSL-enabled server that uses the certificate
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HTTPSServer secureServer = HTTPSServer(&cert);
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// Declare some handler functions for the various URLs on the server
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void handleRoot(HTTPRequest * req, HTTPResponse * res);
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void handle404(HTTPRequest * req, HTTPResponse * res);
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// We declare a function that will be the entry-point for the task that is going to be
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// created.
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void serverTask(void *params);
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void setup() {
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// For logging
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Serial.begin(115200);
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// Connect to WiFi
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Serial.println("Setting up WiFi");
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WiFi.begin(WIFI_SSID, WIFI_PSK);
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while (WiFi.status() != WL_CONNECTED) {
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Serial.print(".");
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delay(500);
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}
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Serial.print("Connected. IP=");
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Serial.println(WiFi.localIP());
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// Setup the server as a separate task.
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Serial.println("Creating server task... ");
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// We pass:
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// serverTask - the function that should be run as separate task
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// "https443" - a name for the task (mainly used for logging)
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// 6144 - stack size in byte. If you want up to four clients, you should
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// not go below 6kB. If your stack is too small, you will encounter
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// Panic and stack canary exceptions, usually during the call to
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// SSL_accept.
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xTaskCreatePinnedToCore(serverTask, "https443", 6144, NULL, 1, NULL, ARDUINO_RUNNING_CORE);
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}
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void loop() {
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Serial.println("loop()");
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delay(5000);
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}
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void serverTask(void *params) {
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// In the separate task we first do everything that we would have done in the
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// setup() function, if we would run the server synchronously.
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// Note: The second task has its own stack, so you need to think about where
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// you create the server's resources and how to make sure that the server
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// can access everything it needs to access. Also make sure that concurrent
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// access is no problem in your sketch or implement countermeasures like locks
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// or mutexes.
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// Create nodes
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ResourceNode * nodeRoot = new ResourceNode("/", "GET", &handleRoot);
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ResourceNode * node404 = new ResourceNode("", "GET", &handle404);
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// Add nodes to the server
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secureServer.registerNode(nodeRoot);
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secureServer.setDefaultNode(node404);
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Serial.println("Starting server...");
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secureServer.start();
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if (secureServer.isRunning()) {
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Serial.println("Server ready.");
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// "loop()" function of the separate task
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while(true) {
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// This call will let the server do its work
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secureServer.loop();
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// Other code would go here...
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delay(1);
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}
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}
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}
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void handleRoot(HTTPRequest * req, HTTPResponse * res) {
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// Status code is 200 OK by default.
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// We want to deliver a simple HTML page, so we send a corresponding content type:
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res->setHeader("Content-Type", "text/html");
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// The response implements the Print interface, so you can use it just like
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// you would write to Serial etc.
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res->println("<!DOCTYPE html>");
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res->println("<html>");
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res->println("<head><title>Hello World!</title></head>");
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res->println("<body>");
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res->println("<h1>Hello World!</h1>");
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res->print("<p>Your server is running for ");
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// A bit of dynamic data: Show the uptime
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res->print((int)(millis()/1000), DEC);
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res->println(" seconds.</p>");
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res->println("</body>");
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res->println("</html>");
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}
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void handle404(HTTPRequest * req, HTTPResponse * res) {
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// Discard request body, if we received any
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// We do this, as this is the default node and may also server POST/PUT requests
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req->discardRequestBody();
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// Set the response status
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res->setStatusCode(404);
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res->setStatusText("Not Found");
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// Set content type of the response
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res->setHeader("Content-Type", "text/html");
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// Write a tiny HTTP page
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res->println("<!DOCTYPE html>");
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res->println("<html>");
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res->println("<head><title>Not Found</title></head>");
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res->println("<body><h1>404 Not Found</h1><p>The requested resource was not found on this server.</p></body>");
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res->println("</html>");
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}
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