/*
* 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;
}
}