ESP32. WiFi. WebServer. LED on/off. Static IP. Soft Access Point

its not working ....

#include <WebServer.h>
#include <WiFi.h>
#include <esp32cam.h>

const char* WIFI_SSID = "***********";
const char* WIFI_PASS = "**********";

WebServer server(80);
#define LED2  4

String estado = "";
static auto loRes = esp32cam::Resolution::find(320, 240);
static auto hiRes = esp32cam::Resolution::find(800, 600);

void
handleBmp()
{
  if (!esp32cam::Camera.changeResolution(loRes)) {
    Serial.println("SET-LO-RES FAIL");
  }

  auto frame = esp32cam::capture();
  if (frame == nullptr) {
    Serial.println("CAPTURE FAIL");
    server.send(503, "", "");
    return;
  }
  Serial.printf("CAPTURE OK %dx%d %db\n", frame->getWidth(), frame->getHeight(),
                static_cast<int>(frame->size()));

  if (!frame->toBmp()) {
    Serial.println("CONVERT FAIL");
    server.send(503, "", "");
    return;
  }
  Serial.printf("CONVERT OK %dx%d %db\n", frame->getWidth(), frame->getHeight(),
                static_cast<int>(frame->size()));

  server.setContentLength(frame->size());
  server.send(200, "image/bmp");
  WiFiClient client = server.client();
  frame->writeTo(client);
}

void
serveJpg()
{
  auto frame = esp32cam::capture();
  if (frame == nullptr) {
    Serial.println("CAPTURE FAIL");
    server.send(503, "", "");
    return;
  }
  Serial.printf("CAPTURE OK %dx%d %db\n", frame->getWidth(), frame->getHeight(),
                static_cast<int>(frame->size()));

  server.setContentLength(frame->size());
  server.send(200, "image/jpeg");
  WiFiClient client = server.client();
  frame->writeTo(client);
}

void
handleJpgLo()
{
  if (!esp32cam::Camera.changeResolution(loRes)) {
    Serial.println("SET-LO-RES FAIL");
  }
  serveJpg();
}

void
handleJpgHi()
{
  if (!esp32cam::Camera.changeResolution(hiRes)) {
    Serial.println("SET-HI-RES FAIL");
  }
  serveJpg();
}

void
handleJpg()
{
  server.sendHeader("Location", "/cam-hi.jpg");
  server.send(302, "", "");
}

void
handleMjpeg()
{
  if (!esp32cam::Camera.changeResolution(hiRes)) {
    Serial.println("SET-HI-RES FAIL");
  }

  Serial.println("STREAM BEGIN");
  WiFiClient client = server.client();
  Serial.println(client.remoteIP());
  String req = client.readStringUntil('\r');
  Serial.println(req);
       if (req.indexOf("on2") != -1) {digitalWrite(LED2, HIGH); estado = "ON";}
       if (req.indexOf("off2") != -1){digitalWrite(LED2, LOW); estado = "OFF";}
  auto startTime = millis();
  int res = esp32cam::Camera.streamMjpeg(client);
  if (res <= 0) {
    Serial.printf("STREAM ERROR %d\n", res);
    return;
  }
  auto duration = millis() - startTime;
  Serial.printf("STREAM END %dfrm %0.2ffps\n", res, 1000.0 * res / duration);
}

void
setup()
{
  Serial.begin(115200);
  Serial.println();

  {
    using namespace esp32cam;
    Config cfg;
    cfg.setPins(pins::AiThinker);
    cfg.setResolution(hiRes);
    cfg.setBufferCount(2);
    cfg.setJpeg(80);

    bool ok = Camera.begin(cfg);
    Serial.println(ok ? "CAMERA OK" : "CAMERA FAIL");
  }

  WiFi.persistent(false);
  WiFi.mode(WIFI_STA);
  WiFi.begin(WIFI_SSID, WIFI_PASS);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
  }

  Serial.print("http://");
  Serial.println(WiFi.localIP());
  Serial.println("  /cam.bmp");
  Serial.println("  /cam-lo.jpg");
  Serial.println("  /cam-hi.jpg");
  Serial.println("  /cam.mjpeg");

  server.on("/cam.bmp", handleBmp);
  ser    ver.on("/cam-lo.jpg", handleJpgLo);
      server.on("/cam-hi.jpg", handleJpgHi);
      server.on("/cam.jpg", handleJpg);
      server.on("/cam.mjpeg", handleMjpeg);

      server.begin();
    }

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

Does it work for you without the LED code?

http://kio4.com/arduino/247_Wemos_WebCam.htm#header

yes. working without flash LED i use MIT APP Invertor

I have found this useful example with ESP32 control over mobile app:
Control ESP32 over Internet using Android App with MIT App Inventor

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