Make the base fee configurable in ChannelConfig
[rust-lightning] / lightning / src / ln / onion_route_tests.rs
index 3fc01f1bb8b4ea7ce285091d9c2a4aea7170ec5d..620864308c4db7c247c67c1ffb7d87d483faf0ac 100644 (file)
 
 use chain::channelmonitor::{CLTV_CLAIM_BUFFER, LATENCY_GRACE_PERIOD_BLOCKS};
 use ln::{PaymentPreimage, PaymentHash, PaymentSecret};
-use ln::channelmanager::HTLCForwardInfo;
+use ln::channelmanager::{HTLCForwardInfo, CLTV_FAR_FAR_AWAY};
 use ln::onion_utils;
 use routing::router::{Route, get_route};
 use ln::features::{InitFeatures, InvoiceFeatures};
 use ln::msgs;
-use ln::msgs::{ChannelMessageHandler, HTLCFailChannelUpdate, OptionalField};
+use ln::msgs::{ChannelMessageHandler, ChannelUpdate, HTLCFailChannelUpdate, OptionalField};
 use util::test_utils;
 use util::events::{Event, MessageSendEvent, MessageSendEventsProvider};
 use util::ser::{Writeable, Writer};
@@ -29,6 +29,7 @@ use bitcoin::hash_types::BlockHash;
 use bitcoin::hashes::sha256::Hash as Sha256;
 use bitcoin::hashes::Hash;
 
+use bitcoin::secp256k1;
 use bitcoin::secp256k1::Secp256k1;
 use bitcoin::secp256k1::key::SecretKey;
 
@@ -240,17 +241,58 @@ impl Writeable for BogusOnionHopData {
        }
 }
 
+const BADONION: u16 = 0x8000;
+const PERM: u16 = 0x4000;
+const NODE: u16 = 0x2000;
+const UPDATE: u16 = 0x1000;
+
 #[test]
-fn test_onion_failure() {
-       use ln::msgs::ChannelUpdate;
-       use ln::channelmanager::CLTV_FAR_FAR_AWAY;
-       use bitcoin::secp256k1;
+fn test_fee_failures() {
+       // Tests that the fee required when forwarding remains consistent over time. This was
+       // previously broken, with forwarding fees floating based on the fee estimator at the time of
+       // forwarding.
+       //
+       // When this test was written, the default base fee floated based on the HTLC count.
+       // It is now fixed, so we simply set the fee to the expected value here.
+       let mut config = test_default_channel_config();
+       config.channel_options.forwarding_fee_base_msat = 196;
+
+       let chanmon_cfgs = create_chanmon_cfgs(3);
+       let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
+       let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[Some(config), Some(config), Some(config)]);
+       let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+       let channels = [create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()), create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known())];
+       let logger = test_utils::TestLogger::new();
+       let route = get_route(&nodes[0].node.get_our_node_id(), &nodes[0].net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 40_000, TEST_FINAL_CLTV, &logger).unwrap();
+
+       // positive case
+       let (payment_preimage_success, payment_hash_success, payment_secret_success) = get_payment_preimage_hash!(nodes[2]);
+       nodes[0].node.send_payment(&route, payment_hash_success, &Some(payment_secret_success)).unwrap();
+       check_added_monitors!(nodes[0], 1);
+       pass_along_route(&nodes[0], &[&[&nodes[1], &nodes[2]]], 40_000, payment_hash_success, payment_secret_success);
+       claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage_success);
+
+       let (_, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[2]);
+       run_onion_failure_test("fee_insufficient", 0, &nodes, &route, &payment_hash, &payment_secret, |msg| {
+               msg.amount_msat -= 1;
+       }, || {}, true, Some(UPDATE|12), Some(msgs::HTLCFailChannelUpdate::ChannelClosed { short_channel_id: channels[0].0.contents.short_channel_id, is_permanent: true}));
 
-       const BADONION: u16 = 0x8000;
-       const PERM: u16 = 0x4000;
-       const NODE: u16 = 0x2000;
-       const UPDATE: u16 = 0x1000;
+       // In an earlier version, we spuriously failed to forward payments if the expected feerate
+       // changed between the channel open and the payment.
+       {
+               let mut feerate_lock = chanmon_cfgs[1].fee_estimator.sat_per_kw.lock().unwrap();
+               *feerate_lock *= 2;
+       }
 
+       let (payment_preimage_success, payment_hash_success, payment_secret_success) = get_payment_preimage_hash!(nodes[2]);
+       nodes[0].node.send_payment(&route, payment_hash_success, &Some(payment_secret_success)).unwrap();
+       check_added_monitors!(nodes[0], 1);
+       pass_along_route(&nodes[0], &[&[&nodes[1], &nodes[2]]], 40_000, payment_hash_success, payment_secret_success);
+       claim_payment(&nodes[0], &[&nodes[1], &nodes[2]], payment_preimage_success);
+}
+
+#[test]
+fn test_onion_failure() {
        // When we check for amount_below_minimum below, we want to test that we're using the *right*
        // amount, thus we need different htlc_minimum_msat values. We set node[2]'s htlc_minimum_msat
        // to 2000, which is above the default value of 1000 set in create_node_chanmgrs.
@@ -261,9 +303,14 @@ fn test_onion_failure() {
        node_2_cfg.channel_options.announced_channel = true;
        node_2_cfg.peer_channel_config_limits.force_announced_channel_preference = false;
 
+       // When this test was written, the default base fee floated based on the HTLC count.
+       // It is now fixed, so we simply set the fee to the expected value here.
+       let mut config = test_default_channel_config();
+       config.channel_options.forwarding_fee_base_msat = 196;
+
        let chanmon_cfgs = create_chanmon_cfgs(3);
        let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
-       let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, Some(node_2_cfg)]);
+       let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[Some(config), Some(config), Some(node_2_cfg)]);
        let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
        for node in nodes.iter() {
                *node.keys_manager.override_session_priv.lock().unwrap() = Some([3; 32]);