void hc_xmpp_register_ns_hook (hc_xmpp_t *, char *, hc_xmpp_hook_t);
void hc_xmpp_recv_message (hc_xmpp_t *, iks *);
void hc_xmpp_sent_message (hc_xmpp_t *, iks *);
void hc_xmpp_register_ns_hook (hc_xmpp_t *, char *, hc_xmpp_hook_t);
void hc_xmpp_recv_message (hc_xmpp_t *, iks *);
void hc_xmpp_sent_message (hc_xmpp_t *, iks *);