A note of caution. In all but the most exceptional of cases, you will want one io_service per application. Rather than tie the entire application to one instance of a class, which might make testing difficult, you may want to consider providing the io_service to the Foo as a dependency injection, with its lifetime controlled by main(). Example (including the fixed constructor): #include <boost/asio.hpp> class foo { public: foo(boost::asio::io_service& ios); // Constructor. private: boost::asio::io_service& ios; boost::asio::ip::udp::socket sock; }; foo::foo(boost::asio::io_service& ios) : ios(ios) , sock(ios) { } int main() { boost::asio::io_service myios; foo f1(myios); // note - io_service is injected foo f2(myios); //... generate events etc myios.run(); // now destroy foos and lastly, myios } On Mon, 18 Jun 2018 at 15:46, Vinnie Falco via Boost-users < boost-users@lists.boost.org> wrote:
On Mon, Jun 18, 2018 at 6:13 AM Álvaro Cebrián Juan via Boost-users <boost-users@lists.boost.org> wrote:
Why doing sock(ios); doesn't work?
What is the complete error message from the compiler?
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