Fixes NullPointerExceptions when PacketLoggingService is unavailable. Reproduced in Jitsi Videobridge.

src/net/java/sip/communicator/impl/netaddr/Ice4jPacketLogger.java

@@ -5,6 +5,7 @@
 
 /**
  * Logs Packets coming and going through ice4j stack.
+ *
  * @author Damian Minkov
  */
 public class Ice4jPacketLogger
@@ -20,37 +21,42 @@ public class Ice4jPacketLogger
      * @param packetContent the content of the packet.
      * @param sender whether we are sending or not the packet.
      */
-    public void logPacket(byte[] sourceAddress,
+    public void logPacket(
+            byte[] sourceAddress,
             int sourcePort,
             byte[] destinationAddress,
             int destinationPort,
             byte[] packetContent,
             boolean sender)
     {
-        if(isEnabled())
+        if (isEnabled())
         {
-            NetaddrActivator.getPacketLogging()
-                .logPacket(
-                        PacketLoggingService.ProtocolName.ICE4J,
-                        sourceAddress,
-                        sourcePort,
-                        destinationAddress,
-                        destinationPort,
-                        PacketLoggingService.TransportName.UDP,
-                        sender,
-                        packetContent
-                );
+            NetaddrActivator.getPacketLogging().logPacket(
+                    PacketLoggingService.ProtocolName.ICE4J,
+                    sourceAddress,
+                    sourcePort,
+                    destinationAddress,
+                    destinationPort,
+                    PacketLoggingService.TransportName.UDP,
+                    sender,
+                    packetContent);
         }
     }
 
     /**
      * Checks whether the logger is enabled.
-     * @return <tt>true</tt> if the logger is enabled, <tt>false</tt>
-     *  otherwise.
+     *
+     * @return <tt>true</tt> if the logger is enabled; <tt>false</tt>,
+     * otherwise
      */
     public boolean isEnabled()
     {
-        return NetaddrActivator.getPacketLogging()
-                .isLoggingEnabled(PacketLoggingService.ProtocolName.ICE4J);
+        PacketLoggingService packetLoggingService
+            = NetaddrActivator.getPacketLogging();
+
+        return
+            (packetLoggingService != null)
+                && packetLoggingService.isLoggingEnabled(
+                        PacketLoggingService.ProtocolName.ICE4J);
     }
 }

src/net/java/sip/communicator/impl/netaddr/NetaddrActivator.java

@@ -103,11 +103,10 @@ public static ConfigurationService getConfigurationService()
     {
         if (configurationService == null)
         {
-            ServiceReference confReference
-                = bundleContext.getServiceReference(
-                    ConfigurationService.class.getName());
             configurationService
-                = (ConfigurationService) bundleContext.getService(confReference);
+                = ServiceUtils.getService(
+                        bundleContext,
+                        ConfigurationService.class);
         }
         return configurationService;
     }
@@ -125,12 +124,10 @@ public static PacketLoggingService getPacketLogging()
     {
         if (packetLoggingService == null)
         {
-            ServiceReference plReference
-                = bundleContext.getServiceReference(
-                        PacketLoggingService.class.getName());
-
             packetLoggingService
-                = (PacketLoggingService)bundleContext.getService(plReference);
+                = ServiceUtils.getService(
+                        bundleContext,
+                        PacketLoggingService.class);
         }
         return packetLoggingService;
     }

src/net/java/sip/communicator/impl/netaddr/NetworkAddressManagerServiceImpl.java

@@ -582,9 +582,7 @@ public synchronized void removeNetworkConfigurationChangeListener(
       */
      public Agent createIceAgent()
      {
-         Agent a = new Agent();
-//         a.getStunStack().
-         return a;
+         return new Agent();
      }
 
      /**
@@ -698,11 +696,12 @@ public IceMediaStream createIceStream( int    rtpPort,
 
          //rtp
          agent.createComponent(
-                 stream, Transport.UDP, rtpPort, rtpPort, rtpPort + 100);
-
-         //rtcpComp
-         agent.createComponent(stream, Transport.UDP,
-                         rtpPort + 1, rtpPort + 1, rtpPort + 101);
+                 stream, Transport.UDP,
+                 rtpPort, rtpPort, rtpPort + 100);
+         //rtcp
+         agent.createComponent(
+                 stream, Transport.UDP,
+                 rtpPort + 1, rtpPort + 1, rtpPort + 101);
 
          return stream;
      }