Function gossmap_node_get_feature

common/gossmap.c:1786–1800

BOLT #7: * 1. type: 257 (`node_announcement`) * 2. data: * * [`signature`:`signature`] * * [`u16`:`flen`] * * [`flen*byte`:`features`] * * [`u32`:`timestamp`] * * [`point`:`node_id`] * * [`3*byte`:`rgb_color`] * * [`32*byte`:`alias`] * * [`u16`:`addrlen`] * * [`addrlen*byte`:`addresses`] */

 *    * [`addrlen*byte`:`addresses`]
 */
int gossmap_node_get_feature(const struct gossmap *map,
			     const struct gossmap_node *n,
			     int fbit)
{
	const u64 feature_len_off = 2 + 64;
	size_t feature_len;

	if (n->nann_off == 0)
		return -1;

	feature_len = map_be16(map, n->nann_off + feature_len_off);

	return map_feature_test(map, COMPULSORY_FEATURE(fbit),
				n->nann_off + feature_len_off + 2, feature_len);
}

u8 *gossmap_node_get_features(const tal_t *ctx,
			      const struct gossmap *map,