java - Chat server plugin API for J2EE web application -



java - Chat server plugin API for J2EE web application -

i need build mobile app (ios, android, windows all) has chat functionality. registered users can chat among themselves. @ back-end, there j2ee based web application (web-services) mobile-apps talk (soa/rest). how can plugin chat server application web application, mobile apps can connect ? please suggest if there api available.

here of apis , rtc applications 1 can explore.

atmosphere - open-source, jsf jwebsocket - open-source, java/javascript based, html5 websocket openfire - open-source, xmpp protocol

java web-services chat mobile-application

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