super(connection, sessionCloseListener); channelCounter = 1; init();
super.close(); channelId2context = null;
channelId2context.remove(channelId);
deregisterChannel(context.getChannelId());
return channelId2context.get(channelId);
return channelId2context.size();
return channelCounter++;
channelId2context.put(context.getChannelId(), context);