Removes unnecessary disco info sent before joinning the room.

src/net/java/sip/communicator/impl/protocol/jabber/ChatRoomJabberImpl.java

@@ -504,6 +504,13 @@ public void joinAs(String nickname, byte[] password)
             }
             else
             {
+                this.provider.getConnection().addPacketListener(
+                    new PresenceListeners(this),
+                    new AndFilter(
+                        new FromMatchesFilter(
+                            multiUserChat.getRoom() + "/" + this.nickname),
+                        new PacketTypeFilter(
+                            org.jivesoftware.smack.packet.Presence.class)));
                 if(password == null)
                     multiUserChat.join(nickname);
                 else
@@ -2324,6 +2331,62 @@ MultiUserChat getMultiUserChat()
     {
         return multiUserChat;
     }
+    
+    /**
+     * Listens for presence packets.
+     */
+    private class PresenceListeners
+    implements PacketListener
+    {
+        /**
+         * Chat room associated with the listener.
+         */
+        private ChatRoom chatRoom;
+        
+        /**
+         * Creates an instance of a listener of presence packets.
+         *
+         * @param chatRoom the chat room associated with the listener
+         */
+        public PresenceListeners(ChatRoom chatRoom)
+        {
+            super();
+            this.chatRoom = chatRoom;
+        }
+        
+        /**
+         * Process incoming presence packet, checks if the room is created and 
+         * finishes the creation of the room.
+         * @param packet the incoming packet.
+         */
+        @Override
+        public void processPacket(Packet packet)
+        {
+            Presence presence = (Presence) packet;
+            if (presence == null || presence.getError() != null) 
+                return;
+            
+            MUCUser mucUser = getMUCUserExtension(packet);
+            if (mucUser != null && mucUser.getStatus() != null) {
+                if ("201".equals(mucUser.getStatus().getCode())) {
+                   try
+                   {
+                       multiUserChat.sendConfigurationForm(
+                           new Form(Form.TYPE_SUBMIT));
+                   } catch (XMPPException e)
+                   {
+                       logger.error("Failed to send config form.", e);
+                   }
+                   opSetMuc.addSmackInvitationRejectionListener(multiUserChat, 
+                       chatRoom);
+                   setLocalUserRole(ChatRoomMemberRole.MODERATOR);
+                   provider.getConnection().removePacketListener(this);
+                }
+            }
+        }
+        
+        
+    }
 
     /**
      * Listens for rejection message and delivers system message when received.

src/net/java/sip/communicator/impl/protocol/jabber/OperationSetMultiUserChatJabberImpl.java

@@ -74,6 +74,21 @@ public class OperationSetMultiUserChatJabberImpl
         presenceOpSet.addSubscriptionListener(this);
     }
 
+    /**
+     * Add SmackInvitationRejectionListener to <tt>MultiUserChat</tt> instance
+     * which will dispatch all rejection events.
+     *
+     * @param muc the smack MultiUserChat instance that we're going to wrap our
+     * chat room around.
+     * @param chatRoom the associated chat room instance
+     */
+    public void addSmackInvitationRejectionListener(MultiUserChat muc, 
+        ChatRoom chatRoom)
+    {
+        muc.addInvitationRejectionListener(
+            new SmackInvitationRejectionListener(chatRoom));
+    }
+
     /**
      * Creates a room with the named <tt>roomName</tt> and according to the
      * specified <tt>roomProperties</tt> on the server that this protocol
@@ -168,8 +183,7 @@ private ChatRoom createLocalChatRoomInstance(MultiUserChat muc)
             // Add the contained in this class SmackInvitationRejectionListener
             // which will dispatch all rejection events to the
             // ChatRoomInvitationRejectionListener.
-            muc.addInvitationRejectionListener(
-                new SmackInvitationRejectionListener(chatRoom));
+            addSmackInvitationRejectionListener(muc, chatRoom);
 
             return chatRoom;
         }
@@ -200,26 +214,12 @@ public synchronized ChatRoom findRoom(String roomName)
         if (room != null)
             return room;
 
-        try
-        {
-            // throws Exception if room does not exist
-            // do not use MultiUserChat.getRoomInfo as there is a bug which
-            // throws NPE
-            ServiceDiscoveryManager.getInstanceFor(getXmppConnection()).
-                discoverInfo(canonicalRoomName);
+        MultiUserChat muc
+            = new MultiUserChat(getXmppConnection(), canonicalRoomName);
 
-            MultiUserChat muc
-                = new MultiUserChat(getXmppConnection(), canonicalRoomName);
-
-            room = new ChatRoomJabberImpl(muc, jabberProvider);
-            chatRoomCache.put(canonicalRoomName, room);
-            return room;
-        }
-        catch (XMPPException e)
-        {
-            // room not found
-            return null;
-        }
+        room = new ChatRoomJabberImpl(muc, jabberProvider);
+        chatRoomCache.put(canonicalRoomName, room);
+        return room;
     }
 
     /**
@@ -597,11 +597,6 @@ public void invitationReceived(Connection conn,
             try
             {
                 chatRoom = (ChatRoomJabberImpl) findRoom(room);
-                if (chatRoom == null)
-                {
-                    MultiUserChat muc = new MultiUserChat(conn, room);
-                    chatRoom = new ChatRoomJabberImpl(muc, jabberProvider);
-                }
                 if (password != null)
                     fireInvitationEvent(
                         chatRoom, inviter, reason, password.getBytes());