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- /*
- * 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.test;
-
- import java.util.logging.*;
- import java.util.*;
- import java.io.*;
- import java.net.*;
-
- import de.javawi.jstun.attribute.*;
- import de.javawi.jstun.header.*;
- import de.javawi.jstun.util.UtilityException;
-
- public class BindingLifetimeTest {
- private static Logger logger = Logger.getLogger("de.javawi.stun.test.BindingLifetimeTest");
- String stunServer;
- int port;
- int timeout = 300; //ms
- MappedAddress ma;
- Timer timer;
- DatagramSocket initialSocket;
-
- // start value for binary search - should be carefully choosen
- int upperBinarySearchLifetime = 345000; // ms
- int lowerBinarySearchLifetime = 0;
- int binarySearchLifetime = ( upperBinarySearchLifetime + lowerBinarySearchLifetime ) / 2;
-
- // lifetime value
- int lifetime = -1; // -1 means undefined.
- boolean completed = false;
-
- public BindingLifetimeTest(String stunServer, int port) {
- super();
- this.stunServer = stunServer;
- this.port = port;
- timer = new Timer(true);
- }
-
- public void test() throws UtilityException, SocketException, UnknownHostException, IOException, MessageAttributeParsingException, MessageAttributeException, MessageHeaderParsingException {
- initialSocket = new DatagramSocket();
- initialSocket.connect(InetAddress.getByName(stunServer), port);
- initialSocket.setSoTimeout(timeout);
-
- if (bindingCommunicationInitialSocket()) {
- return;
- }
- BindingLifetimeTask task = new BindingLifetimeTask();
- timer.schedule(task, binarySearchLifetime);
- logger.finer("Timer scheduled initially: " + binarySearchLifetime + ".");
- }
-
- private boolean bindingCommunicationInitialSocket() throws UtilityException, IOException, MessageHeaderParsingException, MessageAttributeParsingException {
- MessageHeader sendMH = new MessageHeader(MessageHeader.MessageHeaderType.BindingRequest);
- sendMH.generateTransactionID();
- ChangeRequest changeRequest = new ChangeRequest();
- sendMH.addMessageAttribute(changeRequest);
- byte[] data = sendMH.getBytes();
-
- DatagramPacket send = new DatagramPacket(data, data.length, InetAddress.getByName(stunServer), port);
- initialSocket.send(send);
- logger.finer("Binding Request sent.");
-
- MessageHeader receiveMH = new MessageHeader();
- while (!(receiveMH.equalTransactionID(sendMH))) {
- DatagramPacket receive = new DatagramPacket(new byte[200], 200);
- initialSocket.receive(receive);
- receiveMH = MessageHeader.parseHeader(receive.getData());
- receiveMH.parseAttributes(receive.getData());
- }
- ma = (MappedAddress) receiveMH.getMessageAttribute(MessageAttribute.MessageAttributeType.MappedAddress);
- ErrorCode ec = (ErrorCode) receiveMH.getMessageAttribute(MessageAttribute.MessageAttributeType.ErrorCode);
- if (ec != null) {
- logger.config("Message header contains an Errorcode message attribute.");
- return true;
- }
- if (ma == null) {
- logger.config("Response does not contain a Mapped Address message attribute.");
- return true;
- }
- return false;
- }
-
- public int getLifetime() {
- return lifetime;
- }
-
- public boolean isCompleted() {
- return completed;
- }
-
- public void setUpperBinarySearchLifetime(int upperBinarySearchLifetime) {
- this.upperBinarySearchLifetime = upperBinarySearchLifetime;
- binarySearchLifetime = ( upperBinarySearchLifetime + lowerBinarySearchLifetime ) / 2;
- }
-
- class BindingLifetimeTask extends TimerTask {
-
- public BindingLifetimeTask() {
- super();
- }
-
- public void run() {
- try {
- lifetimeQuery();
- } catch (Exception e) {
- logger.config("Unhandled Exception. BindLifetimeTasks stopped.");
- e.printStackTrace();
- }
- }
-
- public void lifetimeQuery() throws UtilityException, MessageAttributeException, MessageHeaderParsingException, MessageAttributeParsingException, IOException {
- try {
- DatagramSocket socket = new DatagramSocket();
- socket.connect(InetAddress.getByName(stunServer), port);
- socket.setSoTimeout(timeout);
-
- MessageHeader sendMH = new MessageHeader(MessageHeader.MessageHeaderType.BindingRequest);
- sendMH.generateTransactionID();
- ChangeRequest changeRequest = new ChangeRequest();
- ResponseAddress responseAddress = new ResponseAddress();
- responseAddress.setAddress(ma.getAddress());
- responseAddress.setPort(ma.getPort());
- sendMH.addMessageAttribute(changeRequest);
- sendMH.addMessageAttribute(responseAddress);
- byte[] data = sendMH.getBytes();
-
- DatagramPacket send = new DatagramPacket(data, data.length, InetAddress.getByName(stunServer), port);
- socket.send(send);
- logger.finer("Binding Request sent.");
-
- MessageHeader receiveMH = new MessageHeader();
- while (!(receiveMH.equalTransactionID(sendMH))) {
- DatagramPacket receive = new DatagramPacket(new byte[200], 200);
- initialSocket.receive(receive);
- receiveMH = MessageHeader.parseHeader(receive.getData());
- receiveMH.parseAttributes(receive.getData());
- }
- ErrorCode ec = (ErrorCode) receiveMH.getMessageAttribute(MessageAttribute.MessageAttributeType.ErrorCode);
- if (ec != null) {
- logger.config("Message header contains errorcode message attribute.");
- return;
- }
- logger.finer("Binding Response received.");
- if (upperBinarySearchLifetime == (lowerBinarySearchLifetime + 1)) {
- logger.config("BindingLifetimeTest completed. UDP binding lifetime: " + binarySearchLifetime + ".");
- completed = true;
- return;
- }
- lifetime = binarySearchLifetime;
- logger.finer("Lifetime update: " + lifetime + ".");
- lowerBinarySearchLifetime = binarySearchLifetime;
- binarySearchLifetime = ( upperBinarySearchLifetime + lowerBinarySearchLifetime ) / 2;
- if (binarySearchLifetime > 0) {
- BindingLifetimeTask task = new BindingLifetimeTask();
- timer.schedule(task, binarySearchLifetime);
- logger.finer("Timer scheduled: " + binarySearchLifetime + ".");
- } else {
- completed = true;
- }
- } catch (SocketTimeoutException ste) {
- logger.finest("Read operation at query socket timeout.");
- if (upperBinarySearchLifetime == (lowerBinarySearchLifetime + 1)) {
- logger.config("BindingLifetimeTest completed. UDP binding lifetime: " + binarySearchLifetime + ".");
- completed = true;
- return;
- }
- upperBinarySearchLifetime = binarySearchLifetime;
- binarySearchLifetime = ( upperBinarySearchLifetime + lowerBinarySearchLifetime ) / 2;
- if (binarySearchLifetime > 0) {
- if (bindingCommunicationInitialSocket()) {
- return;
- }
- BindingLifetimeTask task = new BindingLifetimeTask();
- timer.schedule(task, binarySearchLifetime);
- logger.finer("Timer scheduled: " + binarySearchLifetime + ".");
- } else {
- completed = true;
- }
- }
- }
- }
- }
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