hondacrx
38 lines
1.4 KiB
C#
38 lines
1.4 KiB
C#
/*
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* Copyright (C) 2012-2017 CypherCore <http://github.com/CypherCore>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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using System.Net;
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public static class NetworkExtensions
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{
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public static IPAddress GetNetworkAddress(this IPAddress address, IPAddress subnetMask)
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{
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byte[] ipAdressBytes = address.GetAddressBytes();
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byte[] subnetMaskBytes = subnetMask.GetAddressBytes();
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if (ipAdressBytes.Length != subnetMaskBytes.Length)
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throw new ArgumentException("Lengths of IP address and subnet mask do not match.");
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byte[] broadcastAddress = new byte[ipAdressBytes.Length];
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for (int i = 0; i < broadcastAddress.Length; i++)
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{
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broadcastAddress[i] = (byte)(ipAdressBytes[i] & (subnetMaskBytes[i]));
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}
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return new IPAddress(broadcastAddress);
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}
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} |