Java中的即时消息传递实现

Question

I writting bechalor thesis on analyze and realise instant messaging system in Java . In my mind is first idea realise it by SOAP service, but in other hand I think it is simple but not appropriate, because SOAP provide me only one-way comunication.

In IM I want "alert" from server without asking every some period from client, I think it is waste of server capacity for answer "stupid" request for new message. I don't know other appropriate technology for realise it. I want some tips how way is correct for this project.

Answer 1

Look into XMPP over socket or Socket.io might give you a good starting point. SOAP and REST are not really real time real time due to the structure of messaging, they don't keep persistent connection as websocket as you observed.