mirror of
https://gitlab.linphone.org/BC/public/linphone-iphone.git
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2b8200409c
git-svn-id: svn+ssh://svn.savannah.nongnu.org/linphone/trunk@1 3f6dc0c8-ddfe-455d-9043-3cd528dc4637
81 lines
2.3 KiB
Java
81 lines
2.3 KiB
Java
/*
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* This file is part of JSTUN.
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*
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* Copyright (c) 2005 Thomas King <king@t-king.de> - All rights
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* reserved.
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*
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* This software is licensed under either the GNU Public License (GPL),
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* or the Apache 2.0 license. Copies of both license agreements are
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* included in this distribution.
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*/
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package de.javawi.jstun.attribute;
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import de.javawi.jstun.util.*;
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public class ChangeRequest extends MessageAttribute {
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/*
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* 0 1 2 3
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* 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
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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* |0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 A B 0|
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* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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boolean changeIP = false;
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boolean changePort = false;
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public ChangeRequest() {
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super(MessageAttribute.MessageAttributeType.ChangeRequest);
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}
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public boolean isChangeIP() {
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return changeIP;
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}
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public boolean isChangePort() {
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return changePort;
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}
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public void setChangeIP() {
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changeIP = true;
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}
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public void setChangePort() {
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changePort = true;
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}
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public byte[] getBytes() throws UtilityException {
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byte[] result = new byte[8];
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// message attribute header
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// type
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System.arraycopy(Utility.integerToTwoBytes(typeToInteger(type)), 0, result, 0, 2);
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// length
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System.arraycopy(Utility.integerToTwoBytes(4), 0, result, 2, 2);
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// change request header
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if (changeIP) result[7] = Utility.integerToOneByte(4);
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if (changePort) result[7] = Utility.integerToOneByte(2);
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if (changeIP && changePort) result[7] = Utility.integerToOneByte(6);
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return result;
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}
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public static ChangeRequest parse(byte[] data) throws MessageAttributeParsingException {
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try {
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if (data.length < 4) {
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throw new MessageAttributeParsingException("Data array too short");
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}
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ChangeRequest cr = new ChangeRequest();
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int status = Utility.oneByteToInteger(data[3]);
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switch (status) {
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case 0: break;
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case 2: cr.setChangePort(); break;
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case 4: cr.setChangeIP(); break;
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case 6: cr.setChangeIP(); cr.setChangePort(); break;
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default: throw new MessageAttributeParsingException("Status parsing error");
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}
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return cr;
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} catch (UtilityException ue) {
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throw new MessageAttributeParsingException("Parsing error");
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}
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}
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}
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