//! Further functional tests which test blockchain reorganizations.
use chain::channelmonitor::{ANTI_REORG_DELAY, ChannelMonitor};
+use chain::transaction::OutPoint;
use chain::{Confirm, Watch};
use ln::channelmanager::{ChannelManager, ChannelManagerReadArgs};
use ln::features::InitFeatures;
use util::ser::{ReadableArgs, Writeable};
use bitcoin::blockdata::block::{Block, BlockHeader};
+use bitcoin::blockdata::script::Builder;
+use bitcoin::blockdata::opcodes;
use bitcoin::hash_types::BlockHash;
+use bitcoin::secp256k1::Secp256k1;
use prelude::*;
use core::mem;
node_txn.clear();
}
}
+
+fn do_test_to_remote_after_local_detection(style: ConnectStyle) {
+ // In previous code, detection of to_remote outputs in a counterparty commitment transaction
+ // was dependent on whether a local commitment transaction had been seen on-chain previously.
+ // This resulted in some edge cases around not being able to generate a SpendableOutput event
+ // after a reorg.
+ //
+ // Here, we test this by first confirming one set of commitment transactions, then
+ // disconnecting them and reconnecting another. We then confirm them and check that the correct
+ // SpendableOutput event is generated.
+ let chanmon_cfgs = create_chanmon_cfgs(2);
+ let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
+ let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
+ let mut nodes = create_network(2, &node_cfgs, &node_chanmgrs);
+
+ *nodes[0].connect_style.borrow_mut() = style;
+ *nodes[1].connect_style.borrow_mut() = style;
+
+ let (_, _, chan_id, funding_tx) =
+ create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 100_000_000, InitFeatures::known(), InitFeatures::known());
+ let funding_outpoint = OutPoint { txid: funding_tx.txid(), index: 0 };
+ assert_eq!(funding_outpoint.to_channel_id(), chan_id);
+
+ let remote_txn_a = get_local_commitment_txn!(nodes[0], chan_id);
+ let remote_txn_b = get_local_commitment_txn!(nodes[1], chan_id);
+
+ mine_transaction(&nodes[0], &remote_txn_a[0]);
+ mine_transaction(&nodes[1], &remote_txn_a[0]);
+
+ assert!(nodes[0].node.list_channels().is_empty());
+ check_closed_broadcast!(nodes[0], true);
+ check_added_monitors!(nodes[0], 1);
+ assert!(nodes[1].node.list_channels().is_empty());
+ check_closed_broadcast!(nodes[1], true);
+ check_added_monitors!(nodes[1], 1);
+
+ // Drop transactions broadcasted in response to the first commitment transaction (we have good
+ // test coverage of these things already elsewhere).
+ assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0).len(), 1);
+ assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().split_off(0).len(), 1);
+
+ assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
+ assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
+
+ disconnect_blocks(&nodes[0], 1);
+ disconnect_blocks(&nodes[1], 1);
+
+ assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
+ assert!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
+ assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
+ assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
+
+ connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
+ connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
+
+ assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
+ assert!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
+ assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
+ assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
+
+ mine_transaction(&nodes[0], &remote_txn_b[0]);
+ mine_transaction(&nodes[1], &remote_txn_b[0]);
+
+ assert!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
+ assert!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().is_empty());
+ assert!(nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
+ assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
+
+ connect_blocks(&nodes[0], ANTI_REORG_DELAY - 1);
+ connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
+
+ let mut node_a_spendable = nodes[0].chain_monitor.chain_monitor.get_and_clear_pending_events();
+ assert_eq!(node_a_spendable.len(), 1);
+ if let Event::SpendableOutputs { outputs } = node_a_spendable.pop().unwrap() {
+ assert_eq!(outputs.len(), 1);
+ let spend_tx = nodes[0].keys_manager.backing.spend_spendable_outputs(&[&outputs[0]], Vec::new(),
+ Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(), 253, &Secp256k1::new()).unwrap();
+ check_spends!(spend_tx, remote_txn_b[0]);
+ }
+
+ // nodes[1] is waiting for the to_self_delay to expire, which is many more than
+ // ANTI_REORG_DELAY. Instead, walk it back and confirm the original remote_txn_a commitment
+ // again and check that nodes[1] generates a similar spendable output.
+ // Technically a reorg of ANTI_REORG_DELAY violates our assumptions, so this is undefined by
+ // our API spec, but we currently handle this correctly and there's little reason we shouldn't
+ // in the future.
+ assert!(nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events().is_empty());
+ disconnect_blocks(&nodes[1], ANTI_REORG_DELAY);
+ mine_transaction(&nodes[1], &remote_txn_a[0]);
+ connect_blocks(&nodes[1], ANTI_REORG_DELAY - 1);
+
+ let mut node_b_spendable = nodes[1].chain_monitor.chain_monitor.get_and_clear_pending_events();
+ assert_eq!(node_b_spendable.len(), 1);
+ if let Event::SpendableOutputs { outputs } = node_b_spendable.pop().unwrap() {
+ assert_eq!(outputs.len(), 1);
+ let spend_tx = nodes[1].keys_manager.backing.spend_spendable_outputs(&[&outputs[0]], Vec::new(),
+ Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script(), 253, &Secp256k1::new()).unwrap();
+ check_spends!(spend_tx, remote_txn_a[0]);
+ }
+}
+
+#[test]
+fn test_to_remote_after_local_detection() {
+ do_test_to_remote_after_local_detection(ConnectStyle::BestBlockFirst);
+ do_test_to_remote_after_local_detection(ConnectStyle::BestBlockFirstSkippingBlocks);
+ do_test_to_remote_after_local_detection(ConnectStyle::TransactionsFirst);
+ do_test_to_remote_after_local_detection(ConnectStyle::TransactionsFirstSkippingBlocks);
+ do_test_to_remote_after_local_detection(ConnectStyle::FullBlockViaListen);
+}
projects / rust-lightning / blobdiff