/* * TeleStax, Open Source Cloud Communications Copyright 2012. * and individual contributors * by the @authors tag. See the copyright.txt in the distribution for a * full listing of individual contributors. * * This is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This software is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ package org.mobicents.protocols.ss7.map.api.primitives; /** * <code> Address Type 0 and Address Length 4 are used when Address is an IPv4 address. Address Type 1 and Address Length 16 are used when Address is an IPv6 address. </code> * * * @author sergey vetyutnev * */ public enum GSNAddressAddressType { IPv4(0), IPv6(1); private int code; private GSNAddressAddressType(int code) { this.code = code; } public int getCode() { return code; } public static GSNAddressAddressType getInstance(int code) { switch (code) { case 0: return IPv4; case 1: return IPv6; default: return null; } } // this part is for GSNAddress for first byte encoding purpose public int createGSNAddressFirstByte() { int val = (this.code << 6); if (this.code == 0) // IPv4 val += 4; if (this.code == 1) // IPv6 val += 16; return val; } public static GSNAddressAddressType getFromGSNAddressFirstByte(int firstByte) { int val1 = (firstByte >> 6); int len = (firstByte & 0x3F); GSNAddressAddressType res = getInstance(val1); if (res != null) { switch(res){ case IPv4: if (len == 4) return res; break; case IPv6: if (len == 16) return res; break; } } return null; } }