/** Tracer used to demonstrate logging communication between client and server. */ class myTracer : public vmime::net::tracer { public: myTracer( const vmime::shared_ptr <std::ostringstream>& stream, const vmime::shared_ptr <vmime::net::service>& serv, const int connectionId ) : m_stream(stream), m_service(serv), m_connectionId(connectionId) { } void traceSend(const vmime::string& line) { *m_stream << "[" << m_service->getProtocolName() << ":" << m_connectionId << "] C: " << line << std::endl; } void traceReceive(const vmime::string& line) { *m_stream << "[" << m_service->getProtocolName() << ":" << m_connectionId << "] S: " << line << std::endl; } private: vmime::shared_ptr <std::ostringstream> m_stream; vmime::shared_ptr <vmime::net::service> m_service; const int m_connectionId; }; class myTracerFactory : public vmime::net::tracerFactory { public: myTracerFactory(const vmime::shared_ptr <std::ostringstream>& stream) : m_stream(stream) { } vmime::shared_ptr <vmime::net::tracer> create( const vmime::shared_ptr <vmime::net::service>& serv, const int connectionId ) { return vmime::make_shared <myTracer>(m_stream, serv, connectionId); } private: vmime::shared_ptr <std::ostringstream> m_stream; };