How to bind classmember handler for boost::asio?

Question

C++ / C#

When compiling, an error occurs if I use tcp::socket in the session argument, if I use int or shred_ptr, everything compiles. How to bind correctly?

#include <thread>
#include <memory>
#include <iostream>

#include <boost/bind.hpp>
#include <boost/asio.hpp>

using boost::asio::ip::tcp;
using namespace std;


class Server
{
private:
    boost::asio::io_service io_service;

public:
    void session(tcp::socket sock)
    {
        cout << "New connection..." << endl;
    }

    void start(unsigned port)
    {
        tcp::acceptor a(io_service, tcp::endpoint(tcp::v4(), port));
        cout << "Server started..." << endl;
        for (;;) {
            tcp::socket sock(io_service);
            a.accept(sock);
            thread(boost::bind(&Server::session, this, move(sock))).detach(); //выдаёт ошибку чёто типа using deleted function
        }
    }
};

int main()
{
    auto server = make_shared<Server>();
    server->start(5000);
    return 0;
}

Answer 1

99% that the removed function is a copy constructor.
By the meaning of the socket object, you can guess that it is not worth copying (because one way or another it is a wrapper over a system resource). Since it's not worth copying, use a socket pointer instead of the socket itself. For example, shared_ptr, as advised here: stackoverflow.com/questions/5425666/passing-around... .
In general, get used to the fact that complex objects are passed by value quite rarely (almost never), because passing by value contradicts the essence of these objects - to exist strictly in the quantity in which the programmer created them.