Wokwi - Online ESP32, STM32, Arduino Simulator

#include <WiFi.h>
#include <WiFiClient.h>
#include <WebServer.h>
WebServer server(80);
//CH.EN.U4CSE20049
const int led = 26;

const char MAIN_page[] PROGMEM = R"=====(
  <!DOCTYPE html>
  <html>
  <body>
  <center>
  <h1>Wi-Fi led on off demo</h1><br>
  Click to turn <a href="ledon">LED On</a><br>
  Click to turn <a href="ledoff">LED Off</a><br>
  </center>
  </body>
  </html>
)=====";

void handleRoot() {
  String s = MAIN_page;
  server.send(200,"text/html",s);
}

void handleledon() {
  digitalWrite(led, HIGH);
  server.send(200,"text/html","Led is on");
}

void handleledoff() {
  digitalWrite(led, LOW);
  server.send(200,"text/html","Led is off");
}

void setup(void)
{
  pinMode(led, OUTPUT);
  digitalWrite(led,0);
  Serial.begin(9600);
  WiFi.mode(WIFI_STA);
  WiFi.begin("Wokwi-GUEST","");
  Serial.println("");
  while(WiFi.status() != WL_CONNECTED)
  {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.print("Wifi Connected");
  Serial.print("Ip address");
  Serial.println(WiFi.localIP());
  server.on("/",handleRoot);
  server.on("/ledon",handleledon);
  server.on("/ledoff",handleledoff);
  handleRoot();
  server.begin();
  Serial.println("HTTp Started");
}


void loop(void) {
  server.handleClient();
  delay(2);
}