/* * This file is part of JSTUN.  *  * Copyright (c) 2005 Thomas King <king@t-king.de> - All rights * reserved. *  * This software is licensed under either the GNU Public License (GPL), * or the Apache 2.0 license. Copies of both license agreements are * included in this distribution. */package de.javawi.jstun.attribute;import de.javawi.jstun.util.*;public class MappedResponseChangedSourceAddressReflectedFrom extends MessageAttribute {	int port;	Address address;		/*  	 *  0                   1                   2                   3	 *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1	 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+	 * |x x x x x x x x|    Family     |           Port                |	 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+	 * |                             Address                           |	 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+	 */	public MappedResponseChangedSourceAddressReflectedFrom() {		super();		try {			port = 0;			address = new Address("0.0.0.0");		} catch (UtilityException ue) {			ue.getMessage();			ue.printStackTrace();		}	}		public MappedResponseChangedSourceAddressReflectedFrom(MessageAttribute.MessageAttributeType type) {		super(type);	}		public int getPort() {		return port;	}		public Address getAddress() {		return address;	}		public void setPort(int port) throws MessageAttributeException {		if ((port > 65536) || (port < 0)) {			throw new MessageAttributeException("Port value " + port + " out of range.");		}		this.port = port;	}		public void setAddress(Address address) {		this.address = address;	}		public byte[] getBytes() throws UtilityException {		byte[] result = new byte[12];		// message attribute header		// type		System.arraycopy(Utility.IntegerToTwoBytes(typeToInteger(type)), 0, result, 0, 2);		// length		System.arraycopy(Utility.IntegerToTwoBytes(8), 0, result, 2, 2);				// mappedaddress header		// family		result[5] = Utility.IntegerToOneByte(0x01); 		// port		System.arraycopy(Utility.IntegerToTwoBytes(port), 0, result, 6, 2);		// address		System.arraycopy(address.getBytes(), 0, result, 8, 4);		return result;	}		protected static MappedResponseChangedSourceAddressReflectedFrom parse(MappedResponseChangedSourceAddressReflectedFrom ma, byte[] data) throws MessageAttributeParsingException {		try {			if (data.length < 8) {				throw new MessageAttributeParsingException("Data array too short");			}			int family = Utility.OneByteToInteger(data[1]);			if (family != 0x01) throw new MessageAttributeParsingException("Family " + family + " is not supported");			byte[] portArray = new byte[2];			System.arraycopy(data, 2, portArray, 0, 2);			ma.setPort(Utility.TwoBytesToInteger(portArray));			int firstOctet = Utility.OneByteToInteger(data[4]);			int secondOctet = Utility.OneByteToInteger(data[5]);			int thirdOctet = Utility.OneByteToInteger(data[6]);			int fourthOctet = Utility.OneByteToInteger(data[7]);			ma.setAddress(new Address(firstOctet, secondOctet, thirdOctet, fourthOctet));			return ma;		} catch (UtilityException ue) {			throw new MessageAttributeParsingException("Parsing error");		} catch (MessageAttributeException mae) {			throw new MessageAttributeParsingException("Port parsing error");		}	}		public String toString() {		return "Address " +address.toString() + ", Port " + port;	}}