returned<sender> standard_container::open_sender(const std::string &url, const proton::connection_options &co) { return open_sender(url, sender_options(), co); }
sender connection::open_sender(const std::string &addr) { return open_sender(addr, sender_options()); }
returned<sender> container::open_sender(const std::string &url, const proton::sender_options &lo) { return open_sender(url, lo, connection_options()); }