@Override
    public Iterator<String> getFeatures(String name, String node, JID senderJID) {
        return Arrays.asList(FileTransferManager.NAMESPACE_BYTESTREAMS,
                             "http://jabber.org/protocol/disco#info").iterator();
    }
Returns the fully-qualifed domain name of this chat service.
The domain is composed by the service name and the
name of the XMPP server where the service is running.

@return the file transfer server domain (service name + host name).
xmppserver/src/main/java/org/jivesoftware/openfire/filetransfer/proxy/FileTransferProxy.java