tb_protocol_handler
struct tb_protocol_handler handler;
const struct tb_protocol_handler *handler, *tmp;
int tb_register_protocol_handler(struct tb_protocol_handler *handler)
void tb_unregister_protocol_handler(struct tb_protocol_handler *handler)
int tb_register_protocol_handler(struct tb_protocol_handler *handler);
void tb_unregister_protocol_handler(struct tb_protocol_handler *handler);