std::vector <std::string> ports;
ports.insert(ports.begin(), "unix:socket");
filter_front.ports() = ports;
filter_front.listen_duration() = 1; // listen a short time only
std::vector <std::string> ports;
ports.insert(ports.begin(), "unix:socket");
filter_front.ports() = ports;
filter_front.listen_duration() = 1; // listen a short time only