e2sarNetUtil.hpp

#ifndef E2SARDPNETUTILHPP
#define E2SARDPNETUTILHPP
 
#include <boost/asio.hpp>
#include <boost/asio/ip/udp.hpp>
#include <boost/tuple/tuple.hpp>
#include <boost/tuple/tuple_io.hpp>
 
#include "e2sarError.hpp"
 
using namespace boost::asio;
 
namespace e2sar
{
    /*
        Network utilities class with static functions
    */
    class NetUtil
    {
    public:
        static size_t getMTU(const std::string &interfaceName) noexcept;
        static result<std::string> getHostName() noexcept;
 
        static result<std::vector<ip::address>> getInterfaceIPs(const std::string &interfaceName, bool v6=false) noexcept;
 
#ifdef NETLINK_CAPABLE
        static inline result<boost::tuple<std::string, u_int16_t, ip::address>> getInterfaceAndMTU(const std::string &ipaddr) 
        {
            return getInterfaceAndMTU(ip::make_address(ipaddr));
        }
        static result<boost::tuple<std::string, u_int16_t, ip::address>> getInterfaceAndMTU(const ip::address &addr);
 
#endif
        static result<int> getSocketOutstandingBytes(int sockfd) noexcept;
 
        static bool isNonRoutable(const std::string &addr_str) noexcept;
 
        static bool isNonRoutable(const std::vector<std::string> &addrs) noexcept;
    };
}
#endif