-fn test_default_to_onion_payload_tlv_format() {
- // Tests that we default to creating tlv format onion payloads when no `NodeAnnouncementInfo`
- // `features` for a node in the `network_graph` exists, or when the node isn't in the
- // `network_graph`, and no other known `features` for the node exists.
- let mut priv_channels_conf = UserConfig::default();
- priv_channels_conf.channel_handshake_config.announced_channel = false;
- let chanmon_cfgs = create_chanmon_cfgs(5);
- let node_cfgs = create_node_cfgs(5, &chanmon_cfgs);
- let node_chanmgrs = create_node_chanmgrs(5, &node_cfgs, &[None, None, None, None, Some(priv_channels_conf)]);
- let mut nodes = create_network(5, &node_cfgs, &node_chanmgrs);
-
- create_announced_chan_between_nodes(&nodes, 0, 1, channelmanager::provided_init_features(), channelmanager::provided_init_features());
- create_announced_chan_between_nodes(&nodes, 1, 2, channelmanager::provided_init_features(), channelmanager::provided_init_features());
- create_announced_chan_between_nodes(&nodes, 2, 3, channelmanager::provided_init_features(), channelmanager::provided_init_features());
- create_unannounced_chan_between_nodes_with_value(&nodes, 3, 4, 100000, 10001, channelmanager::provided_init_features(), channelmanager::provided_init_features());
-
- let payment_params = PaymentParameters::from_node_id(nodes[3].node.get_our_node_id());
- let origin_node = &nodes[0];
- let network_graph = origin_node.network_graph;
-
- // Clears all the `NodeAnnouncementInfo` for all nodes of `nodes[0]`'s `network_graph`, so that
- // their `features` aren't used when creating the `route`.
- network_graph.clear_nodes_announcement_info();
-
- let (announced_route, _, _, _) = get_route_and_payment_hash!(
- origin_node, nodes[3], payment_params, 10_000, TEST_FINAL_CLTV);
-
- let hops = &announced_route.paths[0];
- // Assert that the hop between `nodes[1]` and `nodes[2]` defaults to supporting variable length
- // onions, as `nodes[0]` has no `NodeAnnouncementInfo` `features` for `node[2]`
- assert!(hops[1].node_features.supports_variable_length_onion());
- // Assert that the hop between `nodes[2]` and `nodes[3]` defaults to supporting variable length
- // onions, as `nodes[0]` has no `NodeAnnouncementInfo` `features` for `node[3]`, and no `InvoiceFeatures`
- // for the `payment_params`, which would otherwise have been used.
- assert!(hops[2].node_features.supports_variable_length_onion());
- // Note that we do not assert that `hops[0]` (the channel between `nodes[0]` and `nodes[1]`)
- // supports variable length onions, as the `InitFeatures` exchanged in the init message
- // between the nodes will be used when creating the route. We therefore do not default to
- // supporting variable length onions for that hop, as the `InitFeatures` in this case are
- // `channelmanager::provided_init_features()`.
-
- let unannounced_chan = &nodes[4].node.list_usable_channels()[0];
-
- let last_hop = RouteHint(vec![RouteHintHop {
- src_node_id: nodes[3].node.get_our_node_id(),
- short_channel_id: unannounced_chan.short_channel_id.unwrap(),
- fees: RoutingFees {
- base_msat: 0,
- proportional_millionths: 0,
- },
- cltv_expiry_delta: 42,
- htlc_minimum_msat: None,
- htlc_maximum_msat: None,
- }]);
-
- let unannounced_chan_params = PaymentParameters::from_node_id(nodes[4].node.get_our_node_id()).with_route_hints(vec![last_hop]);
- let (unannounced_route, _, _, _) = get_route_and_payment_hash!(
- origin_node, nodes[4], unannounced_chan_params, 10_000, TEST_FINAL_CLTV);
-
- let unannounced_chan_hop = &unannounced_route.paths[0][3];
- // Ensure that `nodes[4]` doesn't exist in `nodes[0]`'s `network_graph`, as it's not public.
- assert!(&network_graph.read_only().nodes().get(&NodeId::from_pubkey(&nodes[4].node.get_our_node_id())).is_none());
- // Assert that the hop between `nodes[3]` and `nodes[4]` defaults to supporting variable length
- // onions, even though `nodes[4]` as `nodes[0]` doesn't exists in `nodes[0]`'s `network_graph`,
- // and no `InvoiceFeatures` for the `payment_params` exists, which would otherwise have been
- // used.
- assert!(unannounced_chan_hop.node_features.supports_variable_length_onion());