Method onError

examples/tcp_chat_client.cpp:53–56

    }

    void onError(int error, const std::string& category, const std::string& message) override
    {
        std::cout << "Chat TCP client caught an error with code " << error << " and category '" << category << "': " << message << std::endl;
    }

private:
    std::atomic<bool> _stop{false};