http://qwikxxeiw4kgmml6vjw2bsxtviuwjce735dunai2djhu6q7qbacq73id.onion/articles/xmpp/intro
Public rooms, on the other hand, only requires you to know the address to join, although
you can also be invited to a public room. Public rooms do not support encryption . Once you have created a room you should be able to invite your friends through the client, otherwise you could try giving them
the address.