问将函数移动到线程时内存泄漏(使用lambda)

EN

#include <App.h>

#include <thread>
#include <chrono>

int main()
{
    using namespace std::chrono_literals;

    us_listen_socket *token{};

    auto start_server = [&token] {
        uWS::App()
            .listen(9001, [&token](auto *listenSocket) {
                if (listenSocket) token = listenSocket;
            })
            .run();
    };

    auto start_timer = [&token] {
        std::this_thread::sleep_for(2s);
        us_listen_socket_close(token);
    };

    ...
}

std::thread(start_server).detach();
start_timer();

std::thread(start_timer).detach();
start_server();