typedef void (*JingleAppCheck) (JingleContentNode *cn, GError **err, gpointer *data);

typedef void (*JingleAppHandle) (JingleNode *jn, JingleContentNode *cn, gpointer *data);

typedef void (*JingleTransportCheck) (JingleContentNode *cn, GError **err, gpointer *data);

typedef void (*JingleTransportHandle) (JingleNode *jn, JingleContentNode *cn, gpointer *data);

typedef struct {

  /* check if the description of a JingleContentNode is correct */

  JingleAppCheck  check;

  /* */

  JingleAppHandle handle;

} JingleAppFuncs;

typedef struct {

  /* check if the transport of a JingleContentNode is correct */

  JingleAppCheck  check;

  /* */

  JingleAppHandle handle;

} JingleTransportFuncs;

void jingle_register_app(const gchar *xmlns,

                         JingleAppFuncs *funcs,

                         gpointer data);

void jingle_register_transport(const gchar *xmlns,

                               JingleTransportFuncs *funcs,

                               gpointer data);

JingleAppFuncs *jingle_get_appfuncs(const gchar *xmlns);

JingleTransportFuncs *jingle_get_transportfuncs(const gchar *xmlns);

void jingle_unregister_app(const gchar *xmlns);

void jingle_unregister_transport(const gchar *xmlns);