Implementing a IM platform in Java

Question

If creating an IM platform in Java, which would be a better way to implement communications between the clients and server? I was thinking either RMI or just a socket connection...

Advice please,

Thanks

Answer 1

I would use straight socket connection, using a well known protocol such as XMPP. You can use a library (like smack) to avoid implementing the whole protocol yourself.

The main advantage of XMPP over RMI or your self-made protocol is that is a well established protocol used for exactly that purpose: IM.

Some chat services already using XMPP include Google Chat (GTALK) and Facebook.