SocketAddress.inl

/*
 * Copyright(c) Sophist Solutions, Inc. 1990-2025.  All rights reserved
 */
 
namespace Stroika::Foundation::IO::Network {
 
    /*
     ********************************************************************************
     *********************** IO::Network::SocketAddress *****************************
     ********************************************************************************
     */
    constexpr inline SocketAddress::SocketAddress () noexcept
        : fSocketAddress_{}
    {
    }
    constexpr inline SocketAddress::SocketAddress (const sockaddr& iaddr) noexcept
        : fSocketAddress_{iaddr}
    {
    }
    constexpr inline SocketAddress::SocketAddress (const sockaddr_in& iaddr) noexcept
        : fSocketAddress_V4_{iaddr}
    {
    }
    constexpr inline SocketAddress::SocketAddress (const sockaddr_in6& iaddr) noexcept
        : fSocketAddress_V6_{iaddr}
    {
    }
    constexpr inline SocketAddress::SocketAddress (const sockaddr_storage& iaddr) noexcept
        : fSocketAddressStorage_{iaddr}
    {
    }
    inline SocketAddress::SocketAddress (const InternetAddress& iaddr, PortType portNumber)
    {
        switch (iaddr.GetAddressFamily ()) {
            case InternetAddress::AddressFamily::V4: {
                fSocketAddress_V4_            = sockaddr_in{};
                fSocketAddress_V4_.sin_family = AF_INET;
                DISABLE_COMPILER_CLANG_WARNING_START ("clang diagnostic ignored \"-Wdeprecated\""); // macro uses 'register' - htons not deprecated
                fSocketAddress_V4_.sin_port = htons (portNumber);                                   //NB no '::' cuz some systems use macro
                DISABLE_COMPILER_CLANG_WARNING_END ("clang diagnostic ignored \"-Wdeprecated\"");
                fSocketAddress_V4_.sin_addr = iaddr.As<in_addr> ();
            } break;
            case InternetAddress::AddressFamily::V6: {
                fSocketAddress_V6_             = sockaddr_in6{};
                fSocketAddress_V6_.sin6_family = AF_INET6;
                DISABLE_COMPILER_CLANG_WARNING_START ("clang diagnostic ignored \"-Wdeprecated\""); // macro uses 'register' - htons not deprecated
                fSocketAddress_V6_.sin6_port = htons (portNumber);                                  //NB no ':' cuz some systems use macro
                DISABLE_COMPILER_CLANG_WARNING_END ("clang diagnostic ignored \"-Wdeprecated\"");
                fSocketAddress_V6_.sin6_addr = iaddr.As<in6_addr> ();
            } break;
            default: {
                // just leave blank - no assert?
                fSocketAddress_ = sockaddr{};
            } break;
        }
    }
    inline bool SocketAddress::empty () const
    {
        return fSocketAddress_.sa_family == AF_UNSPEC;
    }
    inline void SocketAddress::clear ()
    {
        fSocketAddress_ = sockaddr{};
        Assert (fSocketAddress_.sa_family == AF_UNSPEC);
    }
    inline SocketAddress::FamilyType SocketAddress::GetAddressFamily () const
    {
        return static_cast<FamilyType> (fSocketAddress_.sa_family);
    }
    inline size_t SocketAddress::GetRequiredSize () const
    {
        switch (fSocketAddress_.sa_family) {
            case AF_INET: {
                return sizeof (fSocketAddress_V4_);
            }
            case AF_INET6: {
                return sizeof (fSocketAddress_V6_);
            }
            /*case AF_UNIX:
                @todo something like this - add to variant union - but didn't compile on windoze...
                return sizeof (sockaddr_un);*/
            default: {
                return sizeof (fSocketAddressStorage_);
            }
        }
    }
    inline bool SocketAddress::IsInternetAddress () const
    {
        return fSocketAddress_.sa_family == AF_INET or fSocketAddress_.sa_family == AF_INET6;
    }
    inline InternetAddress SocketAddress::GetInternetAddress () const
    {
        Require (IsInternetAddress ());
        switch (fSocketAddress_.sa_family) {
            case AF_INET: {
                return InternetAddress{fSocketAddress_V4_.sin_addr};
            }
            case AF_INET6: {
                return InternetAddress{fSocketAddress_V6_.sin6_addr};
            }
            default: {
                AssertNotReached ();
                return InternetAddress{};
            }
        }
    }
    inline PortType SocketAddress::GetPort () const
    {
        Require (IsInternetAddress ());
        switch (fSocketAddress_.sa_family) {
            case AF_INET: {
                DISABLE_COMPILER_CLANG_WARNING_START ("clang diagnostic ignored \"-Wdeprecated\""); // macro uses 'register' - htons not deprecated
                return ntohs (fSocketAddress_V4_.sin_port);                                         //NB no ':' cuz some systems use macro
                DISABLE_COMPILER_CLANG_WARNING_END ("clang diagnostic ignored \"-Wdeprecated\""); // macro uses 'register' - htons not deprecated
            }
            case AF_INET6: {
                DISABLE_COMPILER_CLANG_WARNING_START ("clang diagnostic ignored \"-Wdeprecated\""); // macro uses 'register' - htons not deprecated
                return ntohs (fSocketAddress_V6_.sin6_port);                                        //NB no ':' cuz some systems use macro
                DISABLE_COMPILER_CLANG_WARNING_END ("clang diagnostic ignored \"-Wdeprecated\""); // macro uses 'register' - htons not deprecated
            }
            default: {
                AssertNotReached ();
                return 0;
            }
        }
    }
    template <>
    inline sockaddr SocketAddress::As<sockaddr> () const
    {
        Require (fSocketAddress_.sa_family == AF_INET or fSocketAddress_.sa_family == AF_UNSPEC); // You probably meant to use sockaddr_storage (to support IPv6)
        return fSocketAddress_;
    }
    template <>
    inline sockaddr_storage SocketAddress::As<sockaddr_storage> () const
    {
        return fSocketAddressStorage_;
    }
    template <>
    inline sockaddr_in SocketAddress::As<sockaddr_in> () const
    {
        Require (fSocketAddress_.sa_family == AF_INET or fSocketAddress_.sa_family == AF_UNSPEC);
        return fSocketAddress_V4_;
    }
    template <>
    inline sockaddr_in6 SocketAddress::As<sockaddr_in6> () const
    {
        Require (fSocketAddress_.sa_family == AF_INET6 or fSocketAddress_.sa_family == AF_UNSPEC);
        return fSocketAddress_V6_;
    }
 
    /*
     ********************************************************************************
     *************************** IO::Network::LocalHost *****************************
     ********************************************************************************
     */
    constexpr InternetAddress LocalHost (SocketAddress::FamilyType fm)
    {
        Require (fm == SocketAddress::INET or fm == SocketAddress::INET6);
        if (fm == SocketAddress::INET) {
            return V4::kLocalhost;
        }
        if (fm == SocketAddress::INET6) {
            return V6::kLocalhost;
        }
        return V4::kLocalhost;
    }
 
}