esp8266-react-framework/lib/framework/RestartService.cpp

#include <RestartService.h>

RestartService::RestartService(AsyncWebServer* server, SecurityManager* securityManager) {
  server->on(RESTART_SERVICE_PATH, HTTP_POST,
    securityManager->wrapRequest(std::bind(&RestartService::restart, this, std::placeholders::_1), AuthenticationPredicates::IS_ADMIN)
  );
}

void RestartService::restart(AsyncWebServerRequest *request) {  
  request->onDisconnect([](){
    ESP.restart();
  });
  request->send(200);
}