Move tests of payment retries into a new module
authorMatt Corallo <git@bluematt.me>
Tue, 5 Oct 2021 19:10:42 +0000 (19:10 +0000)
committerMatt Corallo <git@bluematt.me>
Tue, 5 Oct 2021 19:26:45 +0000 (19:26 +0000)
lightning/src/ln/functional_tests.rs
lightning/src/ln/mod.rs
lightning/src/ln/payment_tests.rs [new file with mode: 0644]

index be6de19463caee51f6552e5cddc7161a38272fdb..30652e47864963ba91574a146bee0192f28ff250 100644 (file)
@@ -4183,204 +4183,6 @@ fn mpp_failure() {
        fail_payment_along_route(&nodes[0], &[&[&nodes[1], &nodes[3]], &[&nodes[2], &nodes[3]]], false, payment_hash);
 }
 
-#[test]
-fn mpp_retry() {
-       let chanmon_cfgs = create_chanmon_cfgs(4);
-       let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
-       let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
-       let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
-
-       let chan_1_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
-       let chan_2_id = create_announced_chan_between_nodes(&nodes, 0, 2, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
-       let chan_3_id = create_announced_chan_between_nodes(&nodes, 1, 3, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
-       let chan_4_id = create_announced_chan_between_nodes(&nodes, 3, 2, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
-       let logger = test_utils::TestLogger::new();
-       // Rebalance
-       send_payment(&nodes[3], &vec!(&nodes[2])[..], 1_500_000);
-
-       let (payment_preimage, payment_hash, payment_secret) = get_payment_preimage_hash!(&nodes[3]);
-       let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
-       let mut route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[3].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 1_000_000, TEST_FINAL_CLTV, &logger).unwrap();
-       let path = route.paths[0].clone();
-       route.paths.push(path);
-       route.paths[0][0].pubkey = nodes[1].node.get_our_node_id();
-       route.paths[0][0].short_channel_id = chan_1_id;
-       route.paths[0][1].short_channel_id = chan_3_id;
-       route.paths[1][0].pubkey = nodes[2].node.get_our_node_id();
-       route.paths[1][0].short_channel_id = chan_2_id;
-       route.paths[1][1].short_channel_id = chan_4_id;
-
-       // Initiate the MPP payment.
-       let payment_id = nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
-       check_added_monitors!(nodes[0], 2); // one monitor per path
-       let mut events = nodes[0].node.get_and_clear_pending_msg_events();
-       assert_eq!(events.len(), 2);
-
-       // Pass half of the payment along the success path.
-       let success_path_msgs = events.remove(0);
-       pass_along_path(&nodes[0], &[&nodes[1], &nodes[3]], 2_000_000, payment_hash, Some(payment_secret), success_path_msgs, false, None);
-
-       // Add the HTLC along the first hop.
-       let fail_path_msgs_1 = events.remove(0);
-       let (update_add, commitment_signed) = match fail_path_msgs_1 {
-               MessageSendEvent::UpdateHTLCs { node_id: _, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, ref commitment_signed } } => {
-                       assert_eq!(update_add_htlcs.len(), 1);
-                       assert!(update_fail_htlcs.is_empty());
-                       assert!(update_fulfill_htlcs.is_empty());
-                       assert!(update_fail_malformed_htlcs.is_empty());
-                       assert!(update_fee.is_none());
-                       (update_add_htlcs[0].clone(), commitment_signed.clone())
-               },
-               _ => panic!("Unexpected event"),
-       };
-       nodes[2].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &update_add);
-       commitment_signed_dance!(nodes[2], nodes[0], commitment_signed, false);
-
-       // Attempt to forward the payment and complete the 2nd path's failure.
-       expect_pending_htlcs_forwardable!(&nodes[2]);
-       expect_pending_htlcs_forwardable!(&nodes[2]);
-       let htlc_updates = get_htlc_update_msgs!(nodes[2], nodes[0].node.get_our_node_id());
-       assert!(htlc_updates.update_add_htlcs.is_empty());
-       assert_eq!(htlc_updates.update_fail_htlcs.len(), 1);
-       assert!(htlc_updates.update_fulfill_htlcs.is_empty());
-       assert!(htlc_updates.update_fail_malformed_htlcs.is_empty());
-       check_added_monitors!(nodes[2], 1);
-       nodes[0].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &htlc_updates.update_fail_htlcs[0]);
-       commitment_signed_dance!(nodes[0], nodes[2], htlc_updates.commitment_signed, false);
-       expect_payment_failed!(nodes[0], payment_hash, false);
-
-       // Rebalance the channel so the second half of the payment can succeed.
-       send_payment(&nodes[3], &vec!(&nodes[2])[..], 1_500_000);
-
-       // Make sure it errors as expected given a too-large amount.
-       if let Err(PaymentSendFailure::ParameterError(APIError::APIMisuseError { err })) = nodes[0].node.retry_payment(&route, payment_id) {
-               assert!(err.contains("over total_payment_amt_msat"));
-       } else { panic!("Unexpected error"); }
-
-       // Make sure it errors as expected given the wrong payment_id.
-       if let Err(PaymentSendFailure::ParameterError(APIError::APIMisuseError { err })) = nodes[0].node.retry_payment(&route, PaymentId([0; 32])) {
-               assert!(err.contains("not found"));
-       } else { panic!("Unexpected error"); }
-
-       // Retry the second half of the payment and make sure it succeeds.
-       let mut path = route.clone();
-       path.paths.remove(0);
-       nodes[0].node.retry_payment(&path, payment_id).unwrap();
-       check_added_monitors!(nodes[0], 1);
-       let mut events = nodes[0].node.get_and_clear_pending_msg_events();
-       assert_eq!(events.len(), 1);
-       pass_along_path(&nodes[0], &[&nodes[2], &nodes[3]], 2_000_000, payment_hash, Some(payment_secret), events.pop().unwrap(), true, None);
-       claim_payment_along_route(&nodes[0], &[&[&nodes[1], &nodes[3]], &[&nodes[2], &nodes[3]]], false, payment_preimage);
-}
-
-#[test]
-fn retry_single_path_payment() {
-       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, None]);
-       let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
-
-       let _chan_0 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
-       let _chan_1 = create_announced_chan_between_nodes(&nodes, 2, 1, InitFeatures::known(), InitFeatures::known());
-       // Rebalance to find a route
-       send_payment(&nodes[2], &vec!(&nodes[1])[..], 3_000_000);
-
-       let logger = test_utils::TestLogger::new();
-       let (payment_preimage, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[2]);
-       let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
-       let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[2].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 100_000, TEST_FINAL_CLTV, &logger).unwrap();
-
-       // Rebalance so that the first hop fails.
-       send_payment(&nodes[1], &vec!(&nodes[2])[..], 2_000_000);
-
-       // Make sure the payment fails on the first hop.
-       let payment_id = nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
-       check_added_monitors!(nodes[0], 1);
-       let mut events = nodes[0].node.get_and_clear_pending_msg_events();
-       assert_eq!(events.len(), 1);
-       let mut payment_event = SendEvent::from_event(events.pop().unwrap());
-       nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
-       check_added_monitors!(nodes[1], 0);
-       commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
-       expect_pending_htlcs_forwardable!(nodes[1]);
-       expect_pending_htlcs_forwardable!(&nodes[1]);
-       let htlc_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
-       assert!(htlc_updates.update_add_htlcs.is_empty());
-       assert_eq!(htlc_updates.update_fail_htlcs.len(), 1);
-       assert!(htlc_updates.update_fulfill_htlcs.is_empty());
-       assert!(htlc_updates.update_fail_malformed_htlcs.is_empty());
-       check_added_monitors!(nodes[1], 1);
-       nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_updates.update_fail_htlcs[0]);
-       commitment_signed_dance!(nodes[0], nodes[1], htlc_updates.commitment_signed, false);
-       expect_payment_failed!(nodes[0], payment_hash, false);
-
-       // Rebalance the channel so the retry succeeds.
-       send_payment(&nodes[2], &vec!(&nodes[1])[..], 3_000_000);
-
-       // Mine two blocks (we expire retries after 3, so this will check that we don't expire early)
-       connect_blocks(&nodes[0], 2);
-
-       // Retry the payment and make sure it succeeds.
-       nodes[0].node.retry_payment(&route, payment_id).unwrap();
-       check_added_monitors!(nodes[0], 1);
-       let mut events = nodes[0].node.get_and_clear_pending_msg_events();
-       assert_eq!(events.len(), 1);
-       pass_along_path(&nodes[0], &[&nodes[1], &nodes[2]], 100_000, payment_hash, Some(payment_secret), events.pop().unwrap(), true, None);
-       claim_payment_along_route(&nodes[0], &[&[&nodes[1], &nodes[2]]], false, payment_preimage);
-}
-
-#[test]
-fn retry_expired_payment() {
-       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, None]);
-       let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
-
-       let _chan_0 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
-       let _chan_1 = create_announced_chan_between_nodes(&nodes, 2, 1, InitFeatures::known(), InitFeatures::known());
-       // Rebalance to find a route
-       send_payment(&nodes[2], &vec!(&nodes[1])[..], 3_000_000);
-
-       let logger = test_utils::TestLogger::new();
-       let (_payment_preimage, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[2]);
-       let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
-       let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[2].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 100_000, TEST_FINAL_CLTV, &logger).unwrap();
-
-       // Rebalance so that the first hop fails.
-       send_payment(&nodes[1], &vec!(&nodes[2])[..], 2_000_000);
-
-       // Make sure the payment fails on the first hop.
-       let payment_id = nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
-       check_added_monitors!(nodes[0], 1);
-       let mut events = nodes[0].node.get_and_clear_pending_msg_events();
-       assert_eq!(events.len(), 1);
-       let mut payment_event = SendEvent::from_event(events.pop().unwrap());
-       nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
-       check_added_monitors!(nodes[1], 0);
-       commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
-       expect_pending_htlcs_forwardable!(nodes[1]);
-       expect_pending_htlcs_forwardable!(&nodes[1]);
-       let htlc_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
-       assert!(htlc_updates.update_add_htlcs.is_empty());
-       assert_eq!(htlc_updates.update_fail_htlcs.len(), 1);
-       assert!(htlc_updates.update_fulfill_htlcs.is_empty());
-       assert!(htlc_updates.update_fail_malformed_htlcs.is_empty());
-       check_added_monitors!(nodes[1], 1);
-       nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_updates.update_fail_htlcs[0]);
-       commitment_signed_dance!(nodes[0], nodes[1], htlc_updates.commitment_signed, false);
-       expect_payment_failed!(nodes[0], payment_hash, false);
-
-       // Mine blocks so the payment will have expired.
-       connect_blocks(&nodes[0], 3);
-
-       // Retry the payment and make sure it errors as expected.
-       if let Err(PaymentSendFailure::ParameterError(APIError::APIMisuseError { err })) = nodes[0].node.retry_payment(&route, payment_id) {
-               assert!(err.contains("not found"));
-       } else {
-               panic!("Unexpected error");
-       }
-}
-
 #[test]
 fn test_dup_htlc_onchain_fails_on_reload() {
        // When a Channel is closed, any outbound HTLCs which were relayed through it are simply
index b5e433270a51ac9d6a363c9152f4f485fbbe39b2..a2a0b4efee2f32418fcdf503a1c5c4b0db0daccc 100644 (file)
@@ -51,6 +51,9 @@ pub mod wire;
 mod functional_tests;
 #[cfg(test)]
 #[allow(unused_mut)]
+mod payment_tests;
+#[cfg(test)]
+#[allow(unused_mut)]
 mod chanmon_update_fail_tests;
 #[cfg(test)]
 #[allow(unused_mut)]
diff --git a/lightning/src/ln/payment_tests.rs b/lightning/src/ln/payment_tests.rs
new file mode 100644 (file)
index 0000000..f79b5da
--- /dev/null
@@ -0,0 +1,227 @@
+// This file is Copyright its original authors, visible in version control
+// history.
+//
+// This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE
+// or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
+// You may not use this file except in accordance with one or both of these
+// licenses.
+
+//! Tests that test the payment retry logic in ChannelManager, including various edge-cases around
+//! serialization ordering between ChannelManager/ChannelMonitors and ensuring we can still retry
+//! payments thereafter.
+
+use ln::{PaymentPreimage, PaymentHash};
+use ln::channelmanager::{PaymentId, PaymentSendFailure};
+use routing::router::get_route;
+use ln::features::{InitFeatures, InvoiceFeatures};
+use ln::msgs;
+use ln::msgs::ChannelMessageHandler;
+use util::test_utils;
+use util::events::{Event, MessageSendEvent, MessageSendEventsProvider};
+use util::errors::APIError;
+
+use bitcoin::hashes::sha256::Hash as Sha256;
+use bitcoin::hashes::Hash;
+
+use prelude::*;
+
+use ln::functional_test_utils::*;
+
+#[test]
+fn retry_single_path_payment() {
+       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, None]);
+       let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+
+       let _chan_0 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
+       let _chan_1 = create_announced_chan_between_nodes(&nodes, 2, 1, InitFeatures::known(), InitFeatures::known());
+       // Rebalance to find a route
+       send_payment(&nodes[2], &vec!(&nodes[1])[..], 3_000_000);
+
+       let logger = test_utils::TestLogger::new();
+       let (payment_preimage, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[2]);
+       let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
+       let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[2].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 100_000, TEST_FINAL_CLTV, &logger).unwrap();
+
+       // Rebalance so that the first hop fails.
+       send_payment(&nodes[1], &vec!(&nodes[2])[..], 2_000_000);
+
+       // Make sure the payment fails on the first hop.
+       let payment_id = nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
+       check_added_monitors!(nodes[0], 1);
+       let mut events = nodes[0].node.get_and_clear_pending_msg_events();
+       assert_eq!(events.len(), 1);
+       let mut payment_event = SendEvent::from_event(events.pop().unwrap());
+       nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
+       check_added_monitors!(nodes[1], 0);
+       commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
+       expect_pending_htlcs_forwardable!(nodes[1]);
+       expect_pending_htlcs_forwardable!(&nodes[1]);
+       let htlc_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
+       assert!(htlc_updates.update_add_htlcs.is_empty());
+       assert_eq!(htlc_updates.update_fail_htlcs.len(), 1);
+       assert!(htlc_updates.update_fulfill_htlcs.is_empty());
+       assert!(htlc_updates.update_fail_malformed_htlcs.is_empty());
+       check_added_monitors!(nodes[1], 1);
+       nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_updates.update_fail_htlcs[0]);
+       commitment_signed_dance!(nodes[0], nodes[1], htlc_updates.commitment_signed, false);
+       expect_payment_failed!(nodes[0], payment_hash, false);
+
+       // Rebalance the channel so the retry succeeds.
+       send_payment(&nodes[2], &vec!(&nodes[1])[..], 3_000_000);
+
+       // Mine two blocks (we expire retries after 3, so this will check that we don't expire early)
+       connect_blocks(&nodes[0], 2);
+
+       // Retry the payment and make sure it succeeds.
+       nodes[0].node.retry_payment(&route, payment_id).unwrap();
+       check_added_monitors!(nodes[0], 1);
+       let mut events = nodes[0].node.get_and_clear_pending_msg_events();
+       assert_eq!(events.len(), 1);
+       pass_along_path(&nodes[0], &[&nodes[1], &nodes[2]], 100_000, payment_hash, Some(payment_secret), events.pop().unwrap(), true, None);
+       claim_payment_along_route(&nodes[0], &[&[&nodes[1], &nodes[2]]], false, payment_preimage);
+}
+
+#[test]
+fn mpp_retry() {
+       let chanmon_cfgs = create_chanmon_cfgs(4);
+       let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
+       let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
+       let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
+
+       let chan_1_id = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
+       let chan_2_id = create_announced_chan_between_nodes(&nodes, 0, 2, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
+       let chan_3_id = create_announced_chan_between_nodes(&nodes, 1, 3, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
+       let chan_4_id = create_announced_chan_between_nodes(&nodes, 3, 2, InitFeatures::known(), InitFeatures::known()).0.contents.short_channel_id;
+       let logger = test_utils::TestLogger::new();
+       // Rebalance
+       send_payment(&nodes[3], &vec!(&nodes[2])[..], 1_500_000);
+
+       let (payment_preimage, payment_hash, payment_secret) = get_payment_preimage_hash!(&nodes[3]);
+       let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
+       let mut route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[3].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 1_000_000, TEST_FINAL_CLTV, &logger).unwrap();
+       let path = route.paths[0].clone();
+       route.paths.push(path);
+       route.paths[0][0].pubkey = nodes[1].node.get_our_node_id();
+       route.paths[0][0].short_channel_id = chan_1_id;
+       route.paths[0][1].short_channel_id = chan_3_id;
+       route.paths[1][0].pubkey = nodes[2].node.get_our_node_id();
+       route.paths[1][0].short_channel_id = chan_2_id;
+       route.paths[1][1].short_channel_id = chan_4_id;
+
+       // Initiate the MPP payment.
+       let payment_id = nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
+       check_added_monitors!(nodes[0], 2); // one monitor per path
+       let mut events = nodes[0].node.get_and_clear_pending_msg_events();
+       assert_eq!(events.len(), 2);
+
+       // Pass half of the payment along the success path.
+       let success_path_msgs = events.remove(0);
+       pass_along_path(&nodes[0], &[&nodes[1], &nodes[3]], 2_000_000, payment_hash, Some(payment_secret), success_path_msgs, false, None);
+
+       // Add the HTLC along the first hop.
+       let fail_path_msgs_1 = events.remove(0);
+       let (update_add, commitment_signed) = match fail_path_msgs_1 {
+               MessageSendEvent::UpdateHTLCs { node_id: _, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, ref commitment_signed } } => {
+                       assert_eq!(update_add_htlcs.len(), 1);
+                       assert!(update_fail_htlcs.is_empty());
+                       assert!(update_fulfill_htlcs.is_empty());
+                       assert!(update_fail_malformed_htlcs.is_empty());
+                       assert!(update_fee.is_none());
+                       (update_add_htlcs[0].clone(), commitment_signed.clone())
+               },
+               _ => panic!("Unexpected event"),
+       };
+       nodes[2].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &update_add);
+       commitment_signed_dance!(nodes[2], nodes[0], commitment_signed, false);
+
+       // Attempt to forward the payment and complete the 2nd path's failure.
+       expect_pending_htlcs_forwardable!(&nodes[2]);
+       expect_pending_htlcs_forwardable!(&nodes[2]);
+       let htlc_updates = get_htlc_update_msgs!(nodes[2], nodes[0].node.get_our_node_id());
+       assert!(htlc_updates.update_add_htlcs.is_empty());
+       assert_eq!(htlc_updates.update_fail_htlcs.len(), 1);
+       assert!(htlc_updates.update_fulfill_htlcs.is_empty());
+       assert!(htlc_updates.update_fail_malformed_htlcs.is_empty());
+       check_added_monitors!(nodes[2], 1);
+       nodes[0].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &htlc_updates.update_fail_htlcs[0]);
+       commitment_signed_dance!(nodes[0], nodes[2], htlc_updates.commitment_signed, false);
+       expect_payment_failed!(nodes[0], payment_hash, false);
+
+       // Rebalance the channel so the second half of the payment can succeed.
+       send_payment(&nodes[3], &vec!(&nodes[2])[..], 1_500_000);
+
+       // Make sure it errors as expected given a too-large amount.
+       if let Err(PaymentSendFailure::ParameterError(APIError::APIMisuseError { err })) = nodes[0].node.retry_payment(&route, payment_id) {
+               assert!(err.contains("over total_payment_amt_msat"));
+       } else { panic!("Unexpected error"); }
+
+       // Make sure it errors as expected given the wrong payment_id.
+       if let Err(PaymentSendFailure::ParameterError(APIError::APIMisuseError { err })) = nodes[0].node.retry_payment(&route, PaymentId([0; 32])) {
+               assert!(err.contains("not found"));
+       } else { panic!("Unexpected error"); }
+
+       // Retry the second half of the payment and make sure it succeeds.
+       let mut path = route.clone();
+       path.paths.remove(0);
+       nodes[0].node.retry_payment(&path, payment_id).unwrap();
+       check_added_monitors!(nodes[0], 1);
+       let mut events = nodes[0].node.get_and_clear_pending_msg_events();
+       assert_eq!(events.len(), 1);
+       pass_along_path(&nodes[0], &[&nodes[2], &nodes[3]], 2_000_000, payment_hash, Some(payment_secret), events.pop().unwrap(), true, None);
+       claim_payment_along_route(&nodes[0], &[&[&nodes[1], &nodes[3]], &[&nodes[2], &nodes[3]]], false, payment_preimage);
+}
+
+#[test]
+fn retry_expired_payment() {
+       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, None]);
+       let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
+
+       let _chan_0 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known());
+       let _chan_1 = create_announced_chan_between_nodes(&nodes, 2, 1, InitFeatures::known(), InitFeatures::known());
+       // Rebalance to find a route
+       send_payment(&nodes[2], &vec!(&nodes[1])[..], 3_000_000);
+
+       let logger = test_utils::TestLogger::new();
+       let (_payment_preimage, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[2]);
+       let net_graph_msg_handler = &nodes[0].net_graph_msg_handler;
+       let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph, &nodes[2].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &Vec::new(), 100_000, TEST_FINAL_CLTV, &logger).unwrap();
+
+       // Rebalance so that the first hop fails.
+       send_payment(&nodes[1], &vec!(&nodes[2])[..], 2_000_000);
+
+       // Make sure the payment fails on the first hop.
+       let payment_id = nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap();
+       check_added_monitors!(nodes[0], 1);
+       let mut events = nodes[0].node.get_and_clear_pending_msg_events();
+       assert_eq!(events.len(), 1);
+       let mut payment_event = SendEvent::from_event(events.pop().unwrap());
+       nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &payment_event.msgs[0]);
+       check_added_monitors!(nodes[1], 0);
+       commitment_signed_dance!(nodes[1], nodes[0], payment_event.commitment_msg, false);
+       expect_pending_htlcs_forwardable!(nodes[1]);
+       expect_pending_htlcs_forwardable!(&nodes[1]);
+       let htlc_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id());
+       assert!(htlc_updates.update_add_htlcs.is_empty());
+       assert_eq!(htlc_updates.update_fail_htlcs.len(), 1);
+       assert!(htlc_updates.update_fulfill_htlcs.is_empty());
+       assert!(htlc_updates.update_fail_malformed_htlcs.is_empty());
+       check_added_monitors!(nodes[1], 1);
+       nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &htlc_updates.update_fail_htlcs[0]);
+       commitment_signed_dance!(nodes[0], nodes[1], htlc_updates.commitment_signed, false);
+       expect_payment_failed!(nodes[0], payment_hash, false);
+
+       // Mine blocks so the payment will have expired.
+       connect_blocks(&nodes[0], 3);
+
+       // Retry the payment and make sure it errors as expected.
+       if let Err(PaymentSendFailure::ParameterError(APIError::APIMisuseError { err })) = nodes[0].node.retry_payment(&route, payment_id) {
+               assert!(err.contains("not found"));
+       } else {
+               panic!("Unexpected error");
+       }
+}