#include <iostream>
#include <boost/asio.hpp>

void print_result(const char* serv, const boost::system::error_code& ec)
{
    if( ec )
        std::cerr << "service: '" << serv << "' FAIL: " << ec.message() << "\n";
    else
        std::cerr << "service: '" << serv << "' OK\n";
}

void do_resolv(const char* serv)
{
    boost::asio::io_service io;
    boost::asio::ip::tcp::resolver resolver(io);
    boost::asio::ip::tcp::resolver::query q("127.0.0.1", serv);
    boost::system::error_code ec;
    boost::asio::ip::tcp::resolver::iterator iter = resolver.resolve(q,ec);
    print_result(serv,ec);
}

int main()
{
    do_resolv("");
    do_resolv("12345");
    do_resolv("ftp");
    return 0;
}