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Add find_route test util

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And use it in the multihop blinded path receive failure test. Will be used in
the next commit to test receiving an invalid blinded final onion payload.

We can't use the existing get_route test util here because blinded payments
rely on the sender adding a random shadow CLTV offset to the final hop; without
this the payment will be failed with cltv-expiry-too-soon.
This commit is contained in:
Valentine Wallace 2023-10-22 18:05:02 -05:00
parent d99089e16a
commit fbe4bf1cdd
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2 changed files with 14 additions and 0 deletions
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2
lightning/src/ln/blinded_payment_tests.rs
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@ -474,6 +474,8 @@ fn multi_hop_receiver_fail() {
nodes.iter().skip(1).map(|n| n.node.get_our_node_id()).collect(), &[&chan_upd_1_2],
&chanmon_cfgs[2].keys_manager);
let route = find_route(&nodes[0], &route_params).unwrap();
node_cfgs[0].router.expect_find_route(route_params.clone(), Ok(route.clone()));
nodes[0].node.send_payment(payment_hash, RecipientOnionFields::spontaneous_empty(), PaymentId(payment_hash.0), route_params, Retry::Attempts(0)).unwrap();
check_added_monitors(&nodes[0], 1);
pass_along_route(&nodes[0], &[&[&nodes[1], &nodes[2]]], amt_msat, payment_hash, payment_secret);

12
lightning/src/ln/functional_test_utils.rs
View file

@ -1971,6 +1971,18 @@ pub fn get_route(send_node: &Node, route_params: &RouteParameters) -> Result<Rou
)
}
/// Like `get_route` above, but adds a random CLTV offset to the final hop.
pub fn find_route(send_node: &Node, route_params: &RouteParameters) -> Result<Route, msgs::LightningError> {
let scorer = TestScorer::new();
let keys_manager = TestKeysInterface::new(&[0u8; 32], bitcoin::network::constants::Network::Testnet);
let random_seed_bytes = keys_manager.get_secure_random_bytes();
router::find_route(
&send_node.node.get_our_node_id(), route_params, &send_node.network_graph,
Some(&send_node.node.list_usable_channels().iter().collect::<Vec<_>>()),
send_node.logger, &scorer, &Default::default(), &random_seed_bytes
)
}
/// Gets a route from the given sender to the node described in `payment_params`.
///
/// Don't use this, use the identically-named function instead.