According to the core XMPP protocol, chapter 13 titled "internationalization considerations", an 'xml:lang' attribute should be included somewhere, but I think it's not.

I'm having great difficulty (in fact it's impossible) sending international (non-western) characters to windows clients from Net::Jabber. Yet all windows clients seem to happily send international characters to each other easily.

I don't know if xml:lang is the fault, if you have any suggestions or comments I'd be greatful to hear.

I'm using Net::XMPP 1.0 on Perl 5.8.4.