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less terrible warning if uPnP fails

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pull/1/head
Michael Christen 13 years ago
parent 0d1042363c
commit 943b670738
1 changed files with 351 additions and 302 deletions
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653
source/net/yacy/upnp/DiscoveryAdvertisement.java
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@ -47,324 +47,373 @@
*/ */
package net.yacy.upnp; package net.yacy.upnp;
import java.io.*; import java.io.IOException;
import java.net.*; import java.net.DatagramPacket;
import java.util.*; import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.SocketTimeoutException;
import java.net.URL;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import org.apache.commons.logging.*; import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/** /**
* SSDP messages listener Thread, notify registered objects implementing the interface DiscoveryEventHandler</br> * SSDP messages listener Thread, notify registered objects implementing the interface
* when a device joins the networks or leaves it.<br/> * DiscoveryEventHandler</br> when a device joins the networks or leaves it.<br/>
* The listener thread is set to only accept matching device description and broadcast message sender IP * The listener thread is set to only accept matching device description and broadcast message sender IP to
* to avoid a security flaw with the protocol. If you are not happy with such behaviour * avoid a security flaw with the protocol. If you are not happy with such behaviour you can set the
* you can set the net.yacy.upnp.ddos.matchip system property to false to avoid this check. * net.yacy.upnp.ddos.matchip system property to false to avoid this check.
*
* @author <a href="mailto:superbonbon@sbbi.net">SuperBonBon</a> * @author <a href="mailto:superbonbon@sbbi.net">SuperBonBon</a>
* @version 1.0 * @version 1.0
*/ */
public class DiscoveryAdvertisement implements Runnable { public class DiscoveryAdvertisement implements Runnable
{
private final static Log log = LogFactory.getLog( DiscoveryAdvertisement.class );
private final static Log log = LogFactory.getLog(DiscoveryAdvertisement.class);
private static boolean MATCH_IP = true;
private static boolean MATCH_IP = true;
static {
String prop = System.getProperty( "net.yacy.upnp.ddos.matchip" ); static {
if ( prop != null && prop.equals( "false" ) ) MATCH_IP = false; String prop = System.getProperty("net.yacy.upnp.ddos.matchip");
} if ( prop != null && prop.equals("false") ) {
MATCH_IP = false;
private static final int DEFAULT_TIMEOUT = 250;
public final static int EVENT_SSDP_ALIVE = 0;
public final static int EVENT_SSDP_BYE_BYE = 1;
private final static String NTS_SSDP_ALIVE = "ssdp:alive";
private final static String NTS_SSDP_BYE_BYE = "ssdp:byebye";
private final static String NT_ALL_EVENTS = "DiscoveryAdvertisement:nt:allevents";
private Map<String, Set<DiscoveryEventHandler>> byeByeRegistered = new HashMap<String, Set<DiscoveryEventHandler>>();
private Map<String, Set<DiscoveryEventHandler>> aliveRegistered = new HashMap<String, Set<DiscoveryEventHandler>>();
private Map<String, InetAddress> USNPerIP = new HashMap<String, InetAddress>();
private final Object REGISTRATION_PROCESS = new Object();
private final static DiscoveryAdvertisement singleton = new DiscoveryAdvertisement();
private boolean inService = false;
private boolean daemon = true;
private java.net.MulticastSocket skt;
private DatagramPacket input;
private DiscoveryAdvertisement() {
}
public final static DiscoveryAdvertisement getInstance() {
return singleton;
}
public void setDaemon( boolean daemon ) {
this.daemon = daemon;
}
/**
* Registers an event category sent by UPNP devices
* @param notificationEvent the event type, either DiscoveryAdvertisement.EVENT_SSDP_ALIVE
* or DiscoveryAdvertisement.EVENT_SSDP_BYE_BYE
* @param nt the type of device advertisement, upnp:rootdevice will return you all advertisement in relation with nt upnp:rootdevice
* a null value specify that all nt type are wanted
* @param eventHandler the events handler, this objet will receive notifications..
* @throws IOException if an error ocurs when the SSDP events listeners threads starts
*/
public void registerEvent( int notificationEvent, String nt, DiscoveryEventHandler eventHandler ) throws IOException {
synchronized( REGISTRATION_PROCESS ) {
if ( !inService ) startDevicesListenerThread();
if ( nt == null ) nt = NT_ALL_EVENTS;
if ( notificationEvent == EVENT_SSDP_ALIVE ) {
Set<DiscoveryEventHandler> handlers = aliveRegistered.get( nt );
if ( handlers == null ) {
handlers = new HashSet<DiscoveryEventHandler>();
aliveRegistered.put( nt, handlers );
}
handlers.add( eventHandler );
} else if ( notificationEvent == EVENT_SSDP_BYE_BYE ) {
Set<DiscoveryEventHandler> handlers = byeByeRegistered.get( nt );
if ( handlers == null ) {
handlers = new HashSet<DiscoveryEventHandler>();
byeByeRegistered.put( nt, handlers );
} }
handlers.add( eventHandler );
} else {
throw new IllegalArgumentException( "Unknown notificationEvent type" );
}
} }
}
private static final int DEFAULT_TIMEOUT = 250;
/**
* Unregisters an event category sent by UPNP devices public final static int EVENT_SSDP_ALIVE = 0;
* @param notificationEvent the event type, either DiscoveryAdvertisement.EVENT_SSDP_ALIVE public final static int EVENT_SSDP_BYE_BYE = 1;
* or DiscoveryAdvertisement.EVENT_SSDP_BYE_BYE
* @param nt the type of device advertisement, upnp:rootdevice will unregister all advertisement in relation with nt upnp:rootdevice private final static String NTS_SSDP_ALIVE = "ssdp:alive";
* a null value specify that all nt type are unregistered private final static String NTS_SSDP_BYE_BYE = "ssdp:byebye";
* @param eventHandler the events handler that needs to be unregistred. private final static String NT_ALL_EVENTS = "DiscoveryAdvertisement:nt:allevents";
*/
public void unRegisterEvent( int notificationEvent, String nt, DiscoveryEventHandler eventHandler ) { private final Map<String, Set<DiscoveryEventHandler>> byeByeRegistered =
synchronized( REGISTRATION_PROCESS ) { new HashMap<String, Set<DiscoveryEventHandler>>();
if ( nt == null ) nt = NT_ALL_EVENTS; private final Map<String, Set<DiscoveryEventHandler>> aliveRegistered =
if ( notificationEvent == EVENT_SSDP_ALIVE ) { new HashMap<String, Set<DiscoveryEventHandler>>();
Set<DiscoveryEventHandler> handlers = aliveRegistered.get( nt ); private final Map<String, InetAddress> USNPerIP = new HashMap<String, InetAddress>();
if ( handlers != null ) {
handlers.remove( eventHandler ); private final Object REGISTRATION_PROCESS = new Object();
if (handlers.isEmpty()) {
aliveRegistered.remove( nt ); private final static DiscoveryAdvertisement singleton = new DiscoveryAdvertisement();
} private boolean inService = false;
private boolean daemon = true;
private java.net.MulticastSocket skt;
private DatagramPacket input;
private DiscoveryAdvertisement() {
}
public final static DiscoveryAdvertisement getInstance() {
return singleton;
}
public void setDaemon(boolean daemon) {
this.daemon = daemon;
}
/**
* Registers an event category sent by UPNP devices
*
* @param notificationEvent the event type, either DiscoveryAdvertisement.EVENT_SSDP_ALIVE or
* DiscoveryAdvertisement.EVENT_SSDP_BYE_BYE
* @param nt the type of device advertisement, upnp:rootdevice will return you all advertisement in
* relation with nt upnp:rootdevice a null value specify that all nt type are wanted
* @param eventHandler the events handler, this objet will receive notifications..
* @throws IOException if an error ocurs when the SSDP events listeners threads starts
*/
public void registerEvent(int notificationEvent, String nt, DiscoveryEventHandler eventHandler)
throws IOException {
synchronized ( this.REGISTRATION_PROCESS ) {
if ( !this.inService ) {
startDevicesListenerThread();
}
if ( nt == null ) {
nt = NT_ALL_EVENTS;
}
if ( notificationEvent == EVENT_SSDP_ALIVE ) {
Set<DiscoveryEventHandler> handlers = this.aliveRegistered.get(nt);
if ( handlers == null ) {
handlers = new HashSet<DiscoveryEventHandler>();
this.aliveRegistered.put(nt, handlers);
}
handlers.add(eventHandler);
} else if ( notificationEvent == EVENT_SSDP_BYE_BYE ) {
Set<DiscoveryEventHandler> handlers = this.byeByeRegistered.get(nt);
if ( handlers == null ) {
handlers = new HashSet<DiscoveryEventHandler>();
this.byeByeRegistered.put(nt, handlers);
}
handlers.add(eventHandler);
} else {
throw new IllegalArgumentException("Unknown notificationEvent type");
}
} }
} else if ( notificationEvent == EVENT_SSDP_BYE_BYE ) { }
Set<DiscoveryEventHandler> handlers = byeByeRegistered.get( nt );
if ( handlers != null ) { /**
handlers.remove( eventHandler ); * Unregisters an event category sent by UPNP devices
if (handlers.isEmpty()) { *
byeByeRegistered.remove( nt ); * @param notificationEvent the event type, either DiscoveryAdvertisement.EVENT_SSDP_ALIVE or
} * DiscoveryAdvertisement.EVENT_SSDP_BYE_BYE
* @param nt the type of device advertisement, upnp:rootdevice will unregister all advertisement in
* relation with nt upnp:rootdevice a null value specify that all nt type are unregistered
* @param eventHandler the events handler that needs to be unregistred.
*/
public void unRegisterEvent(int notificationEvent, String nt, DiscoveryEventHandler eventHandler) {
synchronized ( this.REGISTRATION_PROCESS ) {
if ( nt == null ) {
nt = NT_ALL_EVENTS;
}
if ( notificationEvent == EVENT_SSDP_ALIVE ) {
Set<DiscoveryEventHandler> handlers = this.aliveRegistered.get(nt);
if ( handlers != null ) {
handlers.remove(eventHandler);
if ( handlers.isEmpty() ) {
this.aliveRegistered.remove(nt);
}
}
} else if ( notificationEvent == EVENT_SSDP_BYE_BYE ) {
Set<DiscoveryEventHandler> handlers = this.byeByeRegistered.get(nt);
if ( handlers != null ) {
handlers.remove(eventHandler);
if ( handlers.isEmpty() ) {
this.byeByeRegistered.remove(nt);
}
}
} else {
throw new IllegalArgumentException("Unknown notificationEvent type");
}
if ( this.aliveRegistered.isEmpty() && this.byeByeRegistered.isEmpty() ) {
stopDevicesListenerThread();
}
} }
} else {
throw new IllegalArgumentException( "Unknown notificationEvent type" );
}
if (aliveRegistered.isEmpty() && byeByeRegistered.isEmpty()) {
stopDevicesListenerThread();
}
} }
}
private void startDevicesListenerThread() throws IOException {
private void startDevicesListenerThread() throws IOException { synchronized ( singleton ) {
synchronized( singleton ) { if ( !this.inService ) {
if ( !inService ) { this.startMultiCastSocket();
this.startMultiCastSocket(); Thread deamon = new Thread(this, "DiscoveryAdvertisement daemon");
Thread deamon = new Thread( this, "DiscoveryAdvertisement daemon" ); deamon.setDaemon(this.daemon);
deamon.setDaemon( daemon ); deamon.start();
deamon.start(); // wait for the thread to be started
// wait for the thread to be started while ( !this.inService ) {
while( !inService ) { // let's wait a few ms
// let's wait a few ms try {
try { Thread.sleep(2);
Thread.sleep( 2 ); } catch ( InterruptedException ex ) {
} catch( InterruptedException ex ) { // don t care
// don t care }
} }
}
} }
}
} }
}
private void stopDevicesListenerThread() {
private void stopDevicesListenerThread() { synchronized ( singleton ) {
synchronized( singleton ) { this.inService = false;
inService = false; }
} }
}
private void startMultiCastSocket() throws IOException {
private void startMultiCastSocket() throws IOException {
this.skt = new java.net.MulticastSocket(null);
skt = new java.net.MulticastSocket( null ); this.skt.bind(new InetSocketAddress(InetAddress.getByName("0.0.0.0"), Discovery.SSDP_PORT));
skt.bind( new InetSocketAddress( InetAddress.getByName( "0.0.0.0" ), Discovery.SSDP_PORT ) ); this.skt.setTimeToLive(Discovery.DEFAULT_TTL);
skt.setTimeToLive( Discovery.DEFAULT_TTL ); this.skt.setSoTimeout(DEFAULT_TIMEOUT);
skt.setSoTimeout( DEFAULT_TIMEOUT ); this.skt.joinGroup(InetAddress.getByName(Discovery.SSDP_IP));
skt.joinGroup( InetAddress.getByName( Discovery.SSDP_IP ) );
byte[] buf = new byte[2048];
byte[] buf = new byte[2048]; this.input = new DatagramPacket(buf, buf.length);
input = new DatagramPacket( buf, buf.length );
}
public void run() {
if ( !Thread.currentThread().getName().equals( "DiscoveryAdvertisement daemon" ) ) {
throw new RuntimeException( "No right to call this method" );
} }
inService = true;
while ( inService ) { @Override
try { public void run() {
listenBroadCast(); if ( !Thread.currentThread().getName().equals("DiscoveryAdvertisement daemon") ) {
} catch ( SocketTimeoutException ex ) { throw new RuntimeException("No right to call this method");
// ignoring }
} catch ( IOException ioEx ) { this.inService = true;
log.error( "IO Exception during UPNP DiscoveryAdvertisement messages listening thread", ioEx ); while ( this.inService ) {
} catch( Exception ex ) { try {
log.error( "Fatal Error during UPNP DiscoveryAdvertisement messages listening thread, thread will exit", ex ); listenBroadCast();
inService = false; } catch ( SocketTimeoutException ex ) {
aliveRegistered.clear(); // ignoring
byeByeRegistered.clear(); } catch ( IOException ioEx ) {
USNPerIP.clear(); log.warn("IO Exception during UPNP DiscoveryAdvertisement messages listening thread");
} } catch ( Exception ex ) {
log
.warn("Fatal Error during UPNP DiscoveryAdvertisement messages listening thread, thread will exit");
this.inService = false;
this.aliveRegistered.clear();
this.byeByeRegistered.clear();
this.USNPerIP.clear();
}
}
try {
this.skt.leaveGroup(InetAddress.getByName(Discovery.SSDP_IP));
this.skt.close();
} catch ( Exception ex ) {
// ignoring
}
} }
try { private void listenBroadCast() throws IOException {
skt.leaveGroup( InetAddress.getByName( Discovery.SSDP_IP ) );
skt.close(); this.skt.receive(this.input);
} catch ( Exception ex ) { InetAddress from = this.input.getAddress();
// ignoring String received = new String(this.input.getData(), this.input.getOffset(), this.input.getLength());
HttpResponse msg = null;
try {
msg = new HttpResponse(received);
} catch ( IllegalArgumentException ex ) {
// crappy http sent
if ( log.isDebugEnabled() ) {
log.debug("Skipping uncompliant HTTP message " + received);
}
return;
}
String header = msg.getHeader();
if ( header != null && header.startsWith("NOTIFY") ) {
if ( log.isDebugEnabled() ) {
log.debug(received);
}
String ntsField = msg.getHTTPHeaderField("nts");
if ( ntsField == null || ntsField.trim().length() == 0 ) {
if ( log.isDebugEnabled() ) {
log.debug("Skipping SSDP message, missing HTTP header 'ntsField' field");
}
return;
}
if ( ntsField.equals(NTS_SSDP_ALIVE) ) {
String deviceDescrLoc = msg.getHTTPHeaderField("location");
if ( deviceDescrLoc == null || deviceDescrLoc.trim().length() == 0 ) {
if ( log.isDebugEnabled() ) {
log.debug("Skipping SSDP message, missing HTTP header 'location' field");
}
return;
}
URL loc = new URL(deviceDescrLoc);
if ( MATCH_IP ) {
InetAddress locHost = InetAddress.getByName(loc.getHost());
if ( !from.equals(locHost) ) {
log.warn("Discovery message sender IP "
+ from
+ " does not match device description IP "
+ locHost
+ " skipping message, set the net.yacy.upnp.ddos.matchip system property"
+ " to false to avoid this check");
return;
}
}
String nt = msg.getHTTPHeaderField("nt");
if ( nt == null || nt.trim().length() == 0 ) {
if ( log.isDebugEnabled() ) {
log.debug("Skipping SSDP message, missing HTTP header 'nt' field");
}
return;
}
String maxAge = msg.getHTTPFieldElement("Cache-Control", "max-age");
if ( maxAge == null || maxAge.trim().length() == 0 ) {
if ( log.isDebugEnabled() ) {
log.debug("Skipping SSDP message, missing HTTP header 'max-age' field");
}
return;
}
String usn = msg.getHTTPHeaderField("usn");
if ( usn == null || usn.trim().length() == 0 ) {
if ( log.isDebugEnabled() ) {
log.debug("Skipping SSDP message, missing HTTP header 'usn' field");
}
return;
}
this.USNPerIP.put(usn, from);
String udn = usn;
int index = udn.indexOf("::");
if ( index != -1 ) {
udn = udn.substring(0, index);
}
synchronized ( this.REGISTRATION_PROCESS ) {
Set<DiscoveryEventHandler> handlers = this.aliveRegistered.get(NT_ALL_EVENTS);
if ( handlers != null ) {
for ( DiscoveryEventHandler eventHandler : handlers ) {
eventHandler.eventSSDPAlive(usn, udn, nt, maxAge, loc);
}
}
handlers = this.aliveRegistered.get(nt);
if ( handlers != null ) {
for ( DiscoveryEventHandler eventHandler : handlers ) {
eventHandler.eventSSDPAlive(usn, udn, nt, maxAge, loc);
}
}
}
} else if ( ntsField.equals(NTS_SSDP_BYE_BYE) ) {
String usn = msg.getHTTPHeaderField("usn");
if ( usn == null || usn.trim().length() == 0 ) {
if ( log.isDebugEnabled() ) {
log.debug("Skipping SSDP message, missing HTTP header 'usn' field");
}
return;
}
String nt = msg.getHTTPHeaderField("nt");
if ( nt == null || nt.trim().length() == 0 ) {
if ( log.isDebugEnabled() ) {
log.debug("Skipping SSDP message, missing HTTP header 'nt' field");
}
return;
}
InetAddress originalAliveSenderIp = this.USNPerIP.get(usn);
if ( originalAliveSenderIp != null ) {
// we check that the sender ip of message for the usn
// match the sender ip of the alive message for wich the usn
// has been received
if ( !originalAliveSenderIp.equals(from) ) {
// someone else is trying to say that the usn is leaving
// since IP do not match we skip the message
return;
}
}
String udn = usn;
int index = udn.indexOf("::");
if ( index != -1 ) {
udn = udn.substring(0, index);
}
synchronized ( this.REGISTRATION_PROCESS ) {
Set<DiscoveryEventHandler> handlers = this.byeByeRegistered.get(NT_ALL_EVENTS);
if ( handlers != null ) {
for ( DiscoveryEventHandler eventHandler : handlers ) {
eventHandler.eventSSDPByeBye(usn, udn, nt);
}
}
handlers = this.byeByeRegistered.get(nt);
if ( handlers != null ) {
for ( DiscoveryEventHandler eventHandler : handlers ) {
eventHandler.eventSSDPByeBye(usn, udn, nt);
}
}
}
} else {
log
.warn("Unvalid NTS field value ("
+ ntsField
+ ") received in NOTIFY message :"
+ received);
}
}
} }
}
private void listenBroadCast() throws IOException {
skt.receive( input );
InetAddress from = input.getAddress();
String received = new String( input.getData(), input.getOffset(), input.getLength() );
HttpResponse msg = null;
try {
msg = new HttpResponse( received );
} catch (IllegalArgumentException ex ) {
// crappy http sent
if ( log.isDebugEnabled() ) log.debug( "Skipping uncompliant HTTP message " + received );
return;
}
String header = msg.getHeader();
if ( header != null && header.startsWith( "NOTIFY" ) ) {
if ( log.isDebugEnabled() ) log.debug( received );
String ntsField = msg.getHTTPHeaderField( "nts" );
if( ntsField == null || ntsField.trim().length() == 0 ) {
if ( log.isDebugEnabled() ) log.debug( "Skipping SSDP message, missing HTTP header 'ntsField' field" );
return;
}
if ( ntsField.equals( NTS_SSDP_ALIVE ) ) {
String deviceDescrLoc = msg.getHTTPHeaderField( "location" );
if( deviceDescrLoc == null || deviceDescrLoc.trim().length() == 0 ) {
if ( log.isDebugEnabled() ) log.debug( "Skipping SSDP message, missing HTTP header 'location' field" );
return;
}
URL loc = new URL( deviceDescrLoc );
if ( MATCH_IP ) {
InetAddress locHost = InetAddress.getByName( loc.getHost() );
if ( !from.equals( locHost ) ) {
log.warn( "Discovery message sender IP " + from +
" does not match device description IP " + locHost +
" skipping message, set the net.yacy.upnp.ddos.matchip system property" +
" to false to avoid this check" );
return;
}
}
String nt = msg.getHTTPHeaderField( "nt" );
if( nt == null || nt.trim().length() == 0 ) {
if ( log.isDebugEnabled() ) log.debug( "Skipping SSDP message, missing HTTP header 'nt' field" );
return;
}
String maxAge = msg.getHTTPFieldElement( "Cache-Control", "max-age" );
if( maxAge == null || maxAge.trim().length() == 0 ) {
if ( log.isDebugEnabled() ) log.debug( "Skipping SSDP message, missing HTTP header 'max-age' field" );
return;
}
String usn = msg.getHTTPHeaderField( "usn" );
if( usn == null || usn.trim().length() == 0 ) {
if ( log.isDebugEnabled() ) log.debug( "Skipping SSDP message, missing HTTP header 'usn' field" );
return;
}
USNPerIP.put( usn, from );
String udn = usn;
int index = udn.indexOf( "::" );
if ( index != -1 ) udn = udn.substring( 0, index );
synchronized( REGISTRATION_PROCESS ) {
Set<DiscoveryEventHandler> handlers = aliveRegistered.get( NT_ALL_EVENTS );
if ( handlers != null ) {
for ( Iterator<DiscoveryEventHandler> i = handlers.iterator(); i.hasNext(); ) {
DiscoveryEventHandler eventHandler = i.next();
eventHandler.eventSSDPAlive( usn, udn, nt, maxAge, loc );
}
}
handlers = aliveRegistered.get( nt );
if ( handlers != null ) {
for ( Iterator<DiscoveryEventHandler> i = handlers.iterator(); i.hasNext(); ) {
DiscoveryEventHandler eventHandler = i.next();
eventHandler.eventSSDPAlive( usn, udn, nt, maxAge, loc );
}
}
}
} else if ( ntsField.equals( NTS_SSDP_BYE_BYE ) ) {
String usn = msg.getHTTPHeaderField( "usn" );
if( usn == null || usn.trim().length() == 0 ) {
if ( log.isDebugEnabled() ) log.debug( "Skipping SSDP message, missing HTTP header 'usn' field" );
return;
}
String nt = msg.getHTTPHeaderField( "nt" );
if( nt == null || nt.trim().length() == 0 ) {
if ( log.isDebugEnabled() ) log.debug( "Skipping SSDP message, missing HTTP header 'nt' field" );
return;
}
InetAddress originalAliveSenderIp = USNPerIP.get( usn );
if ( originalAliveSenderIp != null ) {
// we check that the sender ip of message for the usn
// match the sender ip of the alive message for wich the usn
// has been received
if ( !originalAliveSenderIp.equals( from ) ) {
// someone else is trying to say that the usn is leaving
// since IP do not match we skip the message
return;
}
}
String udn = usn;
int index = udn.indexOf( "::" );
if ( index != -1 ) udn = udn.substring( 0, index );
synchronized( REGISTRATION_PROCESS ) {
Set<DiscoveryEventHandler> handlers = byeByeRegistered.get( NT_ALL_EVENTS );
if ( handlers != null ) {
for ( Iterator<DiscoveryEventHandler> i = handlers.iterator(); i.hasNext(); ) {
DiscoveryEventHandler eventHandler = i.next();
eventHandler.eventSSDPByeBye( usn, udn, nt );
}
}
handlers = byeByeRegistered.get( nt );
if ( handlers != null ) {
for ( Iterator<DiscoveryEventHandler> i = handlers.iterator(); i.hasNext(); ) {
DiscoveryEventHandler eventHandler = i.next();
eventHandler.eventSSDPByeBye( usn, udn, nt );
}
}
}
} else {
log.warn( "Unvalid NTS field value (" + ntsField + ") received in NOTIFY message :" + received );
}
}
}
} }

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