[Boost-users] asio tcp::resolver, service resolution

Hi, In documentation I saw that using tcp::resolver::query constructor it is possible to resolve domain.name as well as service name, as shown in the following code fragment. boost::asio::io_service ios; boost::asio::ip::tcp::resolver resolver(ios); boost::asio::ip::tcp::resolver::query query("mydomain.com","myservice"); Here 'myservice' is not a well known service (port number). For resolving 'myservice' where should I add the port number? in my domain name server's (BIND) /etc/services file or in my local systems services file? Or is it 'really' possible to resolve a service name? Thanks, Lloyd