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
351 lines
14 KiB
Java
351 lines
14 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.test;
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import java.io.IOException;
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import java.net.DatagramPacket;
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import java.net.DatagramSocket;
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import java.net.InetAddress;
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import java.net.InetSocketAddress;
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import java.net.SocketException;
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import java.net.SocketTimeoutException;
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import java.net.UnknownHostException;
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import java.util.logging.Logger;
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import de.javawi.jstun.attribute.ChangeRequest;
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import de.javawi.jstun.attribute.ChangedAddress;
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import de.javawi.jstun.attribute.ErrorCode;
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import de.javawi.jstun.attribute.MappedAddress;
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import de.javawi.jstun.attribute.MessageAttribute;
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import de.javawi.jstun.attribute.MessageAttributeException;
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import de.javawi.jstun.attribute.MessageAttributeParsingException;
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import de.javawi.jstun.header.MessageHeader;
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import de.javawi.jstun.header.MessageHeaderParsingException;
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import de.javawi.jstun.util.UtilityException;
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public class DiscoveryTest {
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private static Logger logger = Logger.getLogger("de.javawi.stun.test.DiscoveryTest");
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InetAddress iaddress;
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String stunServer;
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int port;
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int timeoutInitValue = 300; //ms
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MappedAddress ma = null;
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ChangedAddress ca = null;
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boolean nodeNatted = true;
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DatagramSocket socketTest1 = null;
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DiscoveryInfo di = null;
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public DiscoveryTest(InetAddress iaddress , String stunServer, int port) {
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super();
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this.iaddress = iaddress;
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this.stunServer = stunServer;
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this.port = port;
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}
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public DiscoveryInfo test() throws UtilityException, SocketException, UnknownHostException, IOException, MessageAttributeParsingException, MessageAttributeException, MessageHeaderParsingException{
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ma = null;
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ca = null;
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nodeNatted = true;
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socketTest1 = null;
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di = new DiscoveryInfo(iaddress);
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if (test1()) {
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if (test2()) {
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if (test1Redo()) {
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test3();
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}
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}
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}
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socketTest1.close();
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return di;
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}
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private boolean test1() throws UtilityException, SocketException, UnknownHostException, IOException, MessageAttributeParsingException, MessageHeaderParsingException {
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int timeSinceFirstTransmission = 0;
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int timeout = timeoutInitValue;
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while (true) {
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try {
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// Test 1 including response
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socketTest1 = new DatagramSocket(new InetSocketAddress(iaddress, 0));
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socketTest1.setReuseAddress(true);
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socketTest1.connect(InetAddress.getByName(stunServer), port);
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socketTest1.setSoTimeout(timeout);
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MessageHeader sendMH = new MessageHeader(MessageHeader.MessageHeaderType.BindingRequest);
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sendMH.generateTransactionID();
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ChangeRequest changeRequest = new ChangeRequest();
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sendMH.addMessageAttribute(changeRequest);
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byte[] data = sendMH.getBytes();
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DatagramPacket send = new DatagramPacket(data, data.length);
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socketTest1.send(send);
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logger.finer("Test 1: Binding Request sent.");
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MessageHeader receiveMH = new MessageHeader();
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while (!(receiveMH.equalTransactionID(sendMH))) {
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DatagramPacket receive = new DatagramPacket(new byte[200], 200);
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socketTest1.receive(receive);
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receiveMH = MessageHeader.parseHeader(receive.getData());
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receiveMH.parseAttributes(receive.getData());
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}
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ma = (MappedAddress) receiveMH.getMessageAttribute(MessageAttribute.MessageAttributeType.MappedAddress);
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ca = (ChangedAddress) receiveMH.getMessageAttribute(MessageAttribute.MessageAttributeType.ChangedAddress);
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ErrorCode ec = (ErrorCode) receiveMH.getMessageAttribute(MessageAttribute.MessageAttributeType.ErrorCode);
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if (ec != null) {
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di.setError(ec.getResponseCode(), ec.getReason());
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logger.config("Message header contains an Errorcode message attribute.");
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return false;
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}
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if ((ma == null) || (ca == null)) {
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di.setError(700, "The server is sending an incomplete response (Mapped Address and Changed Address message attributes are missing). The client should not retry.");
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logger.config("Response does not contain a Mapped Address or Changed Address message attribute.");
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return false;
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} else {
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di.setPublicIP(ma.getAddress().getInetAddress());
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if ((ma.getPort() == socketTest1.getLocalPort()) && (ma.getAddress().getInetAddress().equals(socketTest1.getLocalAddress()))) {
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logger.fine("Node is not natted.");
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nodeNatted = false;
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} else {
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logger.fine("Node is natted.");
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}
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return true;
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}
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} catch (SocketTimeoutException ste) {
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if (timeSinceFirstTransmission < 7900) {
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logger.finer("Test 1: Socket timeout while receiving the response.");
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timeSinceFirstTransmission += timeout;
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int timeoutAddValue = (timeSinceFirstTransmission * 2);
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if (timeoutAddValue > 1600) timeoutAddValue = 1600;
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timeout = timeoutAddValue;
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} else {
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// node is not capable of udp communication
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logger.finer("Test 1: Socket timeout while receiving the response. Maximum retry limit exceed. Give up.");
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di.setBlockedUDP();
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logger.fine("Node is not capable of UDP communication.");
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return false;
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}
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}
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}
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}
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private boolean test2() throws UtilityException, SocketException, UnknownHostException, IOException, MessageAttributeParsingException, MessageAttributeException, MessageHeaderParsingException {
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int timeSinceFirstTransmission = 0;
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int timeout = timeoutInitValue;
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while (true) {
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try {
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// Test 2 including response
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DatagramSocket sendSocket = new DatagramSocket(new InetSocketAddress(iaddress, 0));
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sendSocket.connect(InetAddress.getByName(stunServer), port);
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sendSocket.setSoTimeout(timeout);
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MessageHeader sendMH = new MessageHeader(MessageHeader.MessageHeaderType.BindingRequest);
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sendMH.generateTransactionID();
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ChangeRequest changeRequest = new ChangeRequest();
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changeRequest.setChangeIP();
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changeRequest.setChangePort();
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sendMH.addMessageAttribute(changeRequest);
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byte[] data = sendMH.getBytes();
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DatagramPacket send = new DatagramPacket(data, data.length);
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sendSocket.send(send);
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logger.finer("Test 2: Binding Request sent.");
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int localPort = sendSocket.getLocalPort();
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InetAddress localAddress = sendSocket.getLocalAddress();
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sendSocket.close();
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DatagramSocket receiveSocket = new DatagramSocket(localPort, localAddress);
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receiveSocket.connect(ca.getAddress().getInetAddress(), ca.getPort());
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receiveSocket.setSoTimeout(timeout);
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MessageHeader receiveMH = new MessageHeader();
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while(!(receiveMH.equalTransactionID(sendMH))) {
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DatagramPacket receive = new DatagramPacket(new byte[200], 200);
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receiveSocket.receive(receive);
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receiveMH = MessageHeader.parseHeader(receive.getData());
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receiveMH.parseAttributes(receive.getData());
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}
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ErrorCode ec = (ErrorCode) receiveMH.getMessageAttribute(MessageAttribute.MessageAttributeType.ErrorCode);
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if (ec != null) {
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di.setError(ec.getResponseCode(), ec.getReason());
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logger.config("Message header contains an Errorcode message attribute.");
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return false;
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}
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if (!nodeNatted) {
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di.setOpenAccess();
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logger.fine("Node has open access to the Internet (or, at least the node is behind a full-cone NAT without translation).");
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} else {
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di.setFullCone();
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logger.fine("Node is behind a full-cone NAT.");
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}
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return false;
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} catch (SocketTimeoutException ste) {
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if (timeSinceFirstTransmission < 7900) {
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logger.finer("Test 2: Socket timeout while receiving the response.");
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timeSinceFirstTransmission += timeout;
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int timeoutAddValue = (timeSinceFirstTransmission * 2);
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if (timeoutAddValue > 1600) timeoutAddValue = 1600;
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timeout = timeoutAddValue;
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} else {
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logger.finer("Test 2: Socket timeout while receiving the response. Maximum retry limit exceed. Give up.");
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if (!nodeNatted) {
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di.setSymmetricUDPFirewall();
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logger.fine("Node is behind a symmetric UDP firewall.");
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return false;
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} else {
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// not is natted
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// redo test 1 with address and port as offered in the changed-address message attribute
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return true;
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}
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}
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}
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}
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}
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private boolean test1Redo() throws UtilityException, SocketException, UnknownHostException, IOException, MessageAttributeParsingException, MessageHeaderParsingException{
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int timeSinceFirstTransmission = 0;
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int timeout = timeoutInitValue;
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while (true) {
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// redo test 1 with address and port as offered in the changed-address message attribute
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try {
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// Test 1 with changed port and address values
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socketTest1.connect(ca.getAddress().getInetAddress(), ca.getPort());
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socketTest1.setSoTimeout(timeout);
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MessageHeader sendMH = new MessageHeader(MessageHeader.MessageHeaderType.BindingRequest);
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sendMH.generateTransactionID();
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ChangeRequest changeRequest = new ChangeRequest();
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sendMH.addMessageAttribute(changeRequest);
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byte[] data = sendMH.getBytes();
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DatagramPacket send = new DatagramPacket(data, data.length);
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socketTest1.send(send);
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logger.finer("Test 1 redo with changed address: Binding Request sent.");
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MessageHeader receiveMH = new MessageHeader();
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while (!(receiveMH.equalTransactionID(sendMH))) {
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DatagramPacket receive = new DatagramPacket(new byte[200], 200);
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socketTest1.receive(receive);
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receiveMH = MessageHeader.parseHeader(receive.getData());
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receiveMH.parseAttributes(receive.getData());
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}
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MappedAddress ma2 = (MappedAddress) receiveMH.getMessageAttribute(MessageAttribute.MessageAttributeType.MappedAddress);
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ErrorCode ec = (ErrorCode) receiveMH.getMessageAttribute(MessageAttribute.MessageAttributeType.ErrorCode);
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if (ec != null) {
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di.setError(ec.getResponseCode(), ec.getReason());
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logger.config("Message header contains an Errorcode message attribute.");
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return false;
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}
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if (ma2 == null) {
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di.setError(700, "The server is sending an incomplete response (Mapped Address message attribute is missing). The client should not retry.");
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logger.config("Response does not contain a Mapped Address message attribute.");
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return false;
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} else {
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if ((ma.getPort() != ma2.getPort()) || (!(ma.getAddress().getInetAddress().equals(ma2.getAddress().getInetAddress())))) {
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di.setSymmetric();
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logger.fine("Node is behind a symmetric NAT.");
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return false;
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}
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}
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return true;
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} catch (SocketTimeoutException ste2) {
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if (timeSinceFirstTransmission < 7900) {
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logger.config("Test 1 redo with changed address: Socket timeout while receiving the response.");
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timeSinceFirstTransmission += timeout;
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int timeoutAddValue = (timeSinceFirstTransmission * 2);
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if (timeoutAddValue > 1600) timeoutAddValue = 1600;
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timeout = timeoutAddValue;
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} else {
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logger.config("Test 1 redo with changed address: Socket timeout while receiving the response. Maximum retry limit exceed. Give up.");
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return false;
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}
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}
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}
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}
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private void test3() throws UtilityException, SocketException, UnknownHostException, IOException, MessageAttributeParsingException, MessageAttributeException, MessageHeaderParsingException {
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int timeSinceFirstTransmission = 0;
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int timeout = timeoutInitValue;
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while (true) {
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try {
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// Test 3 including response
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DatagramSocket sendSocket = new DatagramSocket(new InetSocketAddress(iaddress, 0));
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sendSocket.connect(InetAddress.getByName(stunServer), port);
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sendSocket.setSoTimeout(timeout);
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MessageHeader sendMH = new MessageHeader(MessageHeader.MessageHeaderType.BindingRequest);
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sendMH.generateTransactionID();
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ChangeRequest changeRequest = new ChangeRequest();
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changeRequest.setChangePort();
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sendMH.addMessageAttribute(changeRequest);
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byte[] data = sendMH.getBytes();
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DatagramPacket send = new DatagramPacket(data, data.length);
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sendSocket.send(send);
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logger.finer("Test 3: Binding Request sent.");
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int localPort = sendSocket.getLocalPort();
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InetAddress localAddress = sendSocket.getLocalAddress();
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sendSocket.close();
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DatagramSocket receiveSocket = new DatagramSocket(localPort, localAddress);
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receiveSocket.connect(InetAddress.getByName(stunServer), ca.getPort());
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receiveSocket.setSoTimeout(timeout);
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MessageHeader receiveMH = new MessageHeader();
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while (!(receiveMH.equalTransactionID(sendMH))) {
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DatagramPacket receive = new DatagramPacket(new byte[200], 200);
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receiveSocket.receive(receive);
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receiveMH = MessageHeader.parseHeader(receive.getData());
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receiveMH.parseAttributes(receive.getData());
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}
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ErrorCode ec = (ErrorCode) receiveMH.getMessageAttribute(MessageAttribute.MessageAttributeType.ErrorCode);
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if (ec != null) {
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di.setError(ec.getResponseCode(), ec.getReason());
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logger.config("Message header contains an Errorcode message attribute.");
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return;
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}
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if (nodeNatted) {
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di.setRestrictedCone();
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logger.fine("Node is behind a restricted NAT.");
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return;
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}
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} catch (SocketTimeoutException ste) {
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if (timeSinceFirstTransmission < 7900) {
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logger.finer("Test 3: Socket timeout while receiving the response.");
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timeSinceFirstTransmission += timeout;
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int timeoutAddValue = (timeSinceFirstTransmission * 2);
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if (timeoutAddValue > 1600) timeoutAddValue = 1600;
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timeout = timeoutAddValue;
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} else {
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logger.finer("Test 3: Socket timeout while receiving the response. Maximum retry limit exceed. Give up.");
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di.setPortRestrictedCone();
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logger.fine("Node is behind a port restricted NAT.");
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return;
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}
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}
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}
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}
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}
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