Method ready

cpp/src/credit_test.cpp:164–166

waiter::ready is called when listener can accept connections.

    // waiter::ready is called when listener can accept connections.
    void ready() override {
        container_.connect(srv_->url());
    }

    void on_connection_open(proton::connection& c) override {
        c.open_receiver("messages", proton::receiver_options().credit_window(0));