Thanks for the info. Todd Herman
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Matthew Wild Sent: Thursday, July 05, 2012 8:42 PM To: XMPP Standards Subject: Re: [Standards] Server Synchronization and Roaming On 5 July 2012 23:34, Todd Herman <[email protected]> wrote: > I wanted to check if there is an existing XMPP (experimental or > otherwise) related to synchronizing XMPP servers and allowing roaming? > We need to allow users to seamlessly switch servers in mid-operation. > Has anyone looked into doing this or have any thoughts on an approach? No such XEP exists. While a nice idea in theory, a protocol allowing such free roaming is actually quite complex, and XMPP is not it. The primary problem is that the user identifier in XMPP is the JID, which contains "hard-coded" routing information. Thus moving a user to a different server will result in them having a different JID. However a JID is also the basis for everything else in XMPP requiring identity - subscriptions, access control, etc. Roaming in some form within a single domain is possible, and various XMPP server implementations support clustering for this purpose. However clustering itself is quite complex and implementation-specific. Therefore no XEP exists for even this. This shouldn't be a problem if you stick to one implementation, though I don't actually know of any that support literally migrating a live session from one server to another. Possibly something like that could be implemented using XEP-0198 as a basis. Hope this helps, Matthew
