Function make_daytime_string

example/cpp11/tutorial/daytime3/server.cpp:20–25

using boost::asio::ip::tcp;

std::string make_daytime_string()
{
  using namespace std; // For time_t, time and ctime;
  time_t now = time(0);
  return ctime(&now);
}

class tcp_connection
  : public std::enable_shared_from_this<tcp_connection>