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I am developing a iOS 5 application and we have to include a chat application within it. The chat have to show the messages and the list of connected users (users in the chat tab in the app). There are two types of users (normal users and administrators). An user is tagged as administrator in the CMS. The administrators can kick, ban, unban and delete messages. All the users can send messages to a chat window. There are not private chats. Users can select a text in the chat and for example call the dictionary to search a word. One option is to use sockets, as explained in http://www.raywenderlich.com/3932/how-to-create-a-socket-based-iphone-app-and-server . The problem with that is that it creates a socket connection with each person connected to the server. I think that I don't need that. Maybe a best option is to make the connected users to poll the server for new messages. I think it might be another solution which I dont have to code all myself. I have examined this jabber client for iOS: http://mobile.tutsplus.com/tutorials/iphone/building-a-jabber-client-for-ios-xmpp-integration/ The problem with that is that I have a Rails backend and It will be a lot of work to include that server in my rails application. Does anyone know any third party libraries to include a chat within iOS application? Any tips or guidelines? This is a pretty standard problem and It should be some standard libraries that I can't find. Any experience with node.js or nowjs? Thanks!

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