Function gossmods_from_listpeers

plugins/establish_onion_path.c:114–165

We add fake channels to gossmap to represent current outgoing connections. * This allows dijkstra to find transient connections as well. */

/* We add fake channels to gossmap to represent current outgoing connections.
 * This allows dijkstra to find transient connections as well. */
static struct gossmap_localmods *
gossmods_from_listpeers(const tal_t *ctx,
			struct plugin *plugin,
			const struct gossmap *gossmap,
			const struct node_id *self,
			const char *buf,
			const jsmntok_t *toks)
{
	struct gossmap_localmods *mods = gossmap_localmods_new(ctx);
	const jsmntok_t *peers, *peer;
	size_t i;

	peers = json_get_member(buf, toks, "peers");
	json_for_each_arr(i, peer, peers) {
		bool connected;
		struct node_id peer_id;
		const char *err;
		u8 *features = NULL;
		struct short_channel_id_dir fake_scidd;
		bool enabled = true;

		err = json_scan(tmpctx, buf, peer,
				"{connected:%,"
				"id:%,"
				"features?:%}",
				JSON_SCAN(json_to_bool, &connected),
				JSON_SCAN(json_to_node_id, &peer_id),
				JSON_SCAN_TAL(tmpctx, json_tok_bin_from_hex, &features));
		if (err) {
			plugin_err(plugin, "Bad listpeers.peers %zu: %s", i, err);
		}

		if (!feature_offered(features, OPT_ONION_MESSAGES))
			continue;

		if (!connected) {
			/* Discard any channels we have with that. */
			local_mods_remove_channels(mods, gossmap, self, &peer_id);
			continue;
		}

		/* Add a fake channel */
		fake_scidd.scid.u64 = i;
		fake_scidd.dir = node_id_idx(self, &peer_id);

		gossmap_local_addchan(mods, self, &peer_id, fake_scidd.scid,
				      AMOUNT_MSAT(1000), NULL);
		gossmap_local_updatechan(mods, &fake_scidd, &enabled,
					 NULL, NULL, NULL, NULL, NULL);
	}
	return mods;
}

static const struct pubkey *path_to_node(const tal_t *ctx,
					 struct command *cmd,