Web server for ESP32 timing out

So I recently got myself an ESP32 microcontroller as a step up from my arduino mega and unos, and I have a web server example that uploads fine to my board, but the actual web server always times out when I try to access it in Chrome. any ideas on what's happening?

here's code:

 WiFi Web Server LED Blink

 A simple web server that lets you blink an LED via the web.
 This sketch will print the IP address of your WiFi Shield (once connected)
 to the Serial monitor. From there, you can open that address in a web browser
 to turn on and off the LED on pin 5.

 If the IP address of your shield is yourAddress:
 http://yourAddress/H turns the LED on
 http://yourAddress/L turns it off

 This example is written for a network using WPA encryption. For
 WEP or WPA, change the Wifi.begin() call accordingly.

 * WiFi shield attached
 * LED attached to pin 5

 created for arduino 25 Nov 2012
 by Tom Igoe

ported for sparkfun esp32 
31.01.2017 by Jan Hendrik Berlin

#include <WiFi.h>

const char* ssid     = "SSID";
const char* password = "Password";
unsigned long currentTime = millis();
unsigned long previousTime = 0;
const long timeoutTime = 2000;

WiFiServer server(80);

void setup()
    pinMode(2, OUTPUT);      // set the LED pin mode


    // We start by connecting to a WiFi network

    Serial.print("Connecting to ");

    WiFi.begin(ssid, password);

    while (WiFi.status() != WL_CONNECTED) {

    Serial.println("WiFi connected.");
    Serial.println("IP address: ");


int value = 0;

void loop(){
 WiFiClient client = server.available();   // listen for incoming clients

  if (client) {                              // if you get a client,
    currentTime = millis();
    previousTime = currentTime;
    Serial.println("New Client.");           // print a message out the serial port
    String currentLine = "";                // make a String to hold incoming data from the client
    while (client.connected() && currentTime - previousTime <= timeoutTime) {            // loop while the client's connected
      currentTime = millis();
      if (client.available()) {             // if there's bytes to read from the client,
        char c = client.read();             // read a byte, then
        Serial.write(c);                    // print it out the serial monitor
        if (c == '\n') {                    // if the byte is a newline character

          // if the current line is blank, you got two newline characters in a row.
          // that's the end of the client HTTP request, so send a response:
          if (currentLine.length() == 0) {
            // HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK)
            // and a content-type so the client knows what's coming, then a blank line:
            client.println("HTTP/1.1 200 OK");

            // the content of the HTTP response follows the header:
            client.print("Click <a href=\"/H\">here</a> to turn the LED on pin 2 on.<br>");
            client.print("Click <a href=\"/L\">here</a> to turn the LED on pin 2 off.<br>");

            // The HTTP response ends with another blank line:
            // break out of the while loop:
          } else {    // if you got a newline, then clear currentLine:
            currentLine = "";
        } else if (c != '\r') {  // if you got anything else but a carriage return character,
          currentLine += c;      // add it to the end of the currentLine

        // Check to see if the client request was "GET /H" or "GET /L":
        if (currentLine.endsWith("GET /H")) {
          digitalWrite(2, HIGH);               // GET /H turns the LED on
        if (currentLine.endsWith("GET /L")) {
          digitalWrite(2, LOW);                // GET /L turns the LED off
    // close the connection:
    Serial.println("Client Disconnected.");

I assume that your have put your SSID and router password into the sketch ?

Yes, I just changed those values for sharing purposes

So what actually happens when you try to connect to the web server ? Do you see the messages concerning turning the LED on and off ?

I get a connection timed out error when I try to connect to the web server.


when I use a web server, I set a static IP address.

By the way, this is also a good example to replicate

What IP address does the webserver tell you that it is using ?

Ok, I restarted my router and now the server is up and running on my ESP32. Should work fine now.

Do yourself a favour and start testing the IDE example "Webserver / Hello Server".
The "Webserver.h" will take over a lot of task from you.
For example the correct HTTP Header and HTTP Header Fields.

On the ESP32 (and ESP8266) it's seldom necessary to write the header in the user sketch (and by the way your header is not correct, HTTP/1.1 makes it mandatory to sent also the Content-Length, but you haven't added it to the header.)

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