public void requestSession(final XmppURI uri) {
final IQ iq = new IQ(IQ.Type.set, uri.getHostURI());
iq.setFrom(uri);
iq.setAttribute("id", "im-session-request");
iq.Includes("session", "urn:ietf:params:xml:ns:xmpp-session");
connection.send(iq);
}
}