Exemple #1
0
        /// <summary>Gets the host identifier (rest) an <see cref="T:System.Net.IPAddress"/>.</summary>
        /// <param name="address">The address</param>
        /// <param name="mask">The net mask of the network</param>
        /// <returns>The host identifier (rest) an <see cref="T:System.Net.IPAddress"/></returns>
        public static IPAddress GetHostIdentifier(this IPAddress address, NetMask mask)
        {
            if (address == null)
            {
                throw new ArgumentNullException(nameof(address));
            }
            if (mask == null)
            {
                throw new ArgumentNullException(nameof(mask));
            }
            if (address.AddressFamily != Sockets.AddressFamily.InterNetwork)
            {
                throw new NotSupportedException(OnlyIPv4Supported);
            }

            var maskBits = mask.GetMaskBytes();
            var ipBits   = address.GetAddressBytes();

            // ~Mask & IP
            var retVal = maskBits.Not().And(ipBits);
            var bytes  = new byte[NetMask.MaskLength];

            Buffer.BlockCopy(retVal, 0, bytes, 0, bytes.Length);

            return(new IPAddress(bytes));
        }
Exemple #2
0
        /// <summary>Gets the broadcast address of an <see cref="T:System.Net.IPAddress"/>.</summary>
        /// <param name="address">The address</param>
        /// <param name="mask">The net mask of the network</param>
        /// <returns>The broadcast address of an <see cref="T:System.Net.IPAddress"/></returns>
        public static IPAddress GetBroadcastAddress(this IPAddress address, NetMask mask)
        {
            if (address == null)
            {
                throw new ArgumentNullException("address");
            }
            if (mask == null)
            {
                throw new ArgumentNullException("mask");
            }

            if (address.AddressFamily != Sockets.AddressFamily.InterNetwork)
            {
                throw new NotSupportedException(OnlyIPv4Supported);
            }

            // TODO: Test

            var ipBytes      = address.GetAddressBytes();
            var notMaskBytes = mask.GetMaskBytes().Not();

            var broadcastAddressBytes = notMaskBytes.Or(ipBytes);

            return(new IPAddress(broadcastAddressBytes));
        }