Modified the DefaultServer to send a second client

info message to indicate that all of the local hosted
services have been notified about the new connection.
Modified DefaultClient to wait to start its services
until it has seen this second message.

Client services may want to send things to the server during
their start() method but it's important that things like
the serializer registry service has already processed its
messages or any sends might fail.  The client generally has
the luxury of being able to register handlers/listeners/etc
during initialize where as the server must do this when the
connection arrives.  So it seems reasonable to delay client
service start() until all of the server-side hosted services
have had a chance to initialize themselves.

jme3-networking/src/main/java/com/jme3/network/base/DefaultClient.java

@@ -177,6 +177,10 @@ public class DefaultClient implements Client
                 continue;
             send(ch, reg, false);
         }
+    }    
+
+    public boolean isStarted() {
+        return isRunning;
     }
 
     protected void waitForConnected()
@@ -351,13 +355,16 @@ public class DefaultClient implements Client
  
     protected void fireConnected()
     {
-        // Let the services know we are finally started
-        services.start();
-    
         for( ClientStateListener l : stateListeners ) {
             l.clientConnected( this );
         }            
     }
+
+    protected void startServices() 
+    {
+        // Let the services know we are finally started
+        services.start();      
+    }
     
     protected void fireDisconnected( DisconnectInfo info )
     {
@@ -416,11 +423,19 @@ public class DefaultClient implements Client
         // Pull off the connection management messages we're
         // interested in and then pass on the rest.
         if( m instanceof ClientRegistrationMessage ) {
-            // Then we've gotten our real id
-            this.id = (int)((ClientRegistrationMessage)m).getId();
-            log.log( Level.FINE, "Connection established, id:{0}.", this.id );
-            connecting.countDown();
-            fireConnected();
+            ClientRegistrationMessage crm = (ClientRegistrationMessage)m; 
+            // See if it has a real ID
+            if( crm.getId() >= 0 ) {
+                // Then we've gotten our real id
+                this.id = (int)crm.getId();
+                log.log( Level.FINE, "Connection established, id:{0}.", this.id );
+                connecting.countDown();
+                fireConnected();
+            } else {
+                // Else it's a message letting us know that the 
+                // hosted services have been started
+                startServices();
+            }
             return;
         } else if( m instanceof ChannelInfoMessage ) {
             // This is an interum step in the connection process and

jme3-networking/src/main/java/com/jme3/network/base/DefaultServer.java

@@ -412,7 +412,14 @@ public class DefaultServer implements Server
             
             // Now we can notify the listeners about the
             // new connection.
-            fireConnectionAdded( addedConnection );                                                   
+            fireConnectionAdded( addedConnection );
+            
+            // Send a second registration message with an invalid ID
+            // to let the connection know that it can start its services
+            m = new ClientRegistrationMessage();
+            m.setId(-1);
+            m.setReliable(true);
+            addedConnection.send(m);            
         }            
     }