+int hc_xmpp_hook (void *, int, iks *);
+void hc_xmpp_send_stream (hc_xmpp_t *);
+void hc_xmpp_set_msg_hook (hc_xmpp_t *, hc_xmpp_hook_t);
+void hc_xmpp_register_ns_hook (hc_xmpp_t *, char *, hc_xmpp_hook_t);
+void hc_xmpp_recv_message (hc_xmpp_t *, iks *);