Class EchoSession

performance/ssl_echo_server.cpp:16–32

using namespace CppServer::Asio;

class EchoSession : public SSLSession
{
public:
    using SSLSession::SSLSession;

protected:
    void onReceived(const void* buffer, size_t size) override
    {
        // Resend the message back to the client
        SendAsync(buffer, size);
    }

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

class EchoServer : public SSLServer
{