Merge pull request #2370 from valentinewallace/2023-06-send-along-path-args
[rust-lightning] / fuzz / src / chanmon_consistency.rs
index 41b10fb5a32d051f8d341fba2709b4033a60be6b..e923ef882f26ce643aa7c9478f15ecc648c931d8 100644 (file)
@@ -18,8 +18,6 @@
 //! send-side handling is correct, other peers. We consider it a failure if any action results in a
 //! channel being force-closed.
 
-use bitcoin::TxMerkleNode;
-use bitcoin::blockdata::block::BlockHeader;
 use bitcoin::blockdata::constants::genesis_block;
 use bitcoin::blockdata::transaction::{Transaction, TxOut};
 use bitcoin::blockdata::script::{Builder, Script};
@@ -37,20 +35,21 @@ use lightning::chain::{BestBlock, ChannelMonitorUpdateStatus, chainmonitor, chan
 use lightning::chain::channelmonitor::{ChannelMonitor, MonitorEvent};
 use lightning::chain::transaction::OutPoint;
 use lightning::chain::chaininterface::{BroadcasterInterface, ConfirmationTarget, FeeEstimator};
-use lightning::chain::keysinterface::{KeyMaterial, InMemorySigner, Recipient, EntropySource, NodeSigner, SignerProvider};
+use lightning::sign::{KeyMaterial, InMemorySigner, Recipient, EntropySource, NodeSigner, SignerProvider};
+use lightning::events;
+use lightning::events::MessageSendEventsProvider;
 use lightning::ln::{PaymentHash, PaymentPreimage, PaymentSecret};
-use lightning::ln::channelmanager::{ChainParameters, ChannelDetails, ChannelManager, PaymentSendFailure, ChannelManagerReadArgs, PaymentId};
+use lightning::ln::channelmanager::{ChainParameters, ChannelDetails, ChannelManager, PaymentSendFailure, ChannelManagerReadArgs, PaymentId, RecipientOnionFields};
 use lightning::ln::channel::FEE_SPIKE_BUFFER_FEE_INCREASE_MULTIPLE;
 use lightning::ln::msgs::{self, CommitmentUpdate, ChannelMessageHandler, DecodeError, UpdateAddHTLC, Init};
 use lightning::ln::script::ShutdownScript;
+use lightning::ln::functional_test_utils::*;
 use lightning::util::enforcing_trait_impls::{EnforcingSigner, EnforcementState};
 use lightning::util::errors::APIError;
-use lightning::util::events;
 use lightning::util::logger::Logger;
 use lightning::util::config::UserConfig;
-use lightning::util::events::MessageSendEventsProvider;
 use lightning::util::ser::{Readable, ReadableArgs, Writeable, Writer};
-use lightning::routing::router::{InFlightHtlcs, Route, RouteHop, RouteParameters, Router};
+use lightning::routing::router::{InFlightHtlcs, Path, Route, RouteHop, RouteParameters, Router};
 
 use crate::utils::test_logger::{self, Output};
 use crate::utils::test_persister::TestPersister;
@@ -79,7 +78,7 @@ impl FeeEstimator for FuzzEstimator {
                // Background feerate which is <= the minimum Normal feerate.
                match conf_target {
                        ConfirmationTarget::HighPriority => MAX_FEE,
-                       ConfirmationTarget::Background => 253,
+                       ConfirmationTarget::Background|ConfirmationTarget::MempoolMinimum => 253,
                        ConfirmationTarget::Normal => cmp::min(self.ret_val.load(atomic::Ordering::Acquire), MAX_FEE),
                }
        }
@@ -90,7 +89,7 @@ struct FuzzRouter {}
 impl Router for FuzzRouter {
        fn find_route(
                &self, _payer: &PublicKey, _params: &RouteParameters, _first_hops: Option<&[&ChannelDetails]>,
-               _inflight_htlcs: &InFlightHtlcs
+               _inflight_htlcs: InFlightHtlcs
        ) -> Result<Route, msgs::LightningError> {
                Err(msgs::LightningError {
                        err: String::from("Not implemented"),
@@ -101,7 +100,7 @@ impl Router for FuzzRouter {
 
 pub struct TestBroadcaster {}
 impl BroadcasterInterface for TestBroadcaster {
-       fn broadcast_transaction(&self, _tx: &Transaction) { }
+       fn broadcast_transactions(&self, _txs: &[&Transaction]) { }
 }
 
 pub struct VecWriter(pub Vec<u8>);
@@ -240,6 +239,7 @@ impl SignerProvider for KeyProvider {
                        [id, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, self.node_secret[31]],
                        channel_value_satoshis,
                        channel_keys_id,
+                       channel_keys_id,
                );
                let revoked_commitment = self.make_enforcement_state_cell(keys.commitment_seed);
                EnforcingSigner::new_with_revoked(keys, revoked_commitment, false)
@@ -248,7 +248,7 @@ impl SignerProvider for KeyProvider {
        fn read_chan_signer(&self, buffer: &[u8]) -> Result<Self::Signer, DecodeError> {
                let mut reader = std::io::Cursor::new(buffer);
 
-               let inner: InMemorySigner = Readable::read(&mut reader)?;
+               let inner: InMemorySigner = ReadableArgs::read(&mut reader, self)?;
                let state = self.make_enforcement_state_cell(inner.commitment_seed);
 
                Ok(EnforcingSigner {
@@ -258,18 +258,18 @@ impl SignerProvider for KeyProvider {
                })
        }
 
-       fn get_destination_script(&self) -> Script {
+       fn get_destination_script(&self) -> Result<Script, ()> {
                let secp_ctx = Secp256k1::signing_only();
                let channel_monitor_claim_key = SecretKey::from_slice(&[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, self.node_secret[31]]).unwrap();
                let our_channel_monitor_claim_key_hash = WPubkeyHash::hash(&PublicKey::from_secret_key(&secp_ctx, &channel_monitor_claim_key).serialize());
-               Builder::new().push_opcode(opcodes::all::OP_PUSHBYTES_0).push_slice(&our_channel_monitor_claim_key_hash[..]).into_script()
+               Ok(Builder::new().push_opcode(opcodes::all::OP_PUSHBYTES_0).push_slice(&our_channel_monitor_claim_key_hash[..]).into_script())
        }
 
-       fn get_shutdown_scriptpubkey(&self) -> ShutdownScript {
+       fn get_shutdown_scriptpubkey(&self) -> Result<ShutdownScript, ()> {
                let secp_ctx = Secp256k1::signing_only();
                let secret_key = SecretKey::from_slice(&[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, self.node_secret[31]]).unwrap();
                let pubkey_hash = WPubkeyHash::hash(&PublicKey::from_secret_key(&secp_ctx, &secret_key).serialize());
-               ShutdownScript::new_p2wpkh(&pubkey_hash)
+               Ok(ShutdownScript::new_p2wpkh(&pubkey_hash))
        }
 }
 
@@ -285,7 +285,7 @@ impl KeyProvider {
 }
 
 #[inline]
-fn check_api_err(api_err: APIError) {
+fn check_api_err(api_err: APIError, sendable_bounds_violated: bool) {
        match api_err {
                APIError::APIMisuseError { .. } => panic!("We can't misuse the API"),
                APIError::FeeRateTooHigh { .. } => panic!("We can't send too much fee?"),
@@ -296,15 +296,11 @@ fn check_api_err(api_err: APIError) {
                        // is probably just stale and you should add new messages here.
                        match err.as_str() {
                                "Peer for first hop currently disconnected" => {},
-                               _ if err.starts_with("Cannot push more than their max accepted HTLCs ") => {},
-                               _ if err.starts_with("Cannot send value that would put us over the max HTLC value in flight our peer will accept ") => {},
-                               _ if err.starts_with("Cannot send value that would put our balance under counterparty-announced channel reserve value") => {},
-                               _ if err.starts_with("Cannot send value that would put counterparty balance under holder-announced channel reserve value") => {},
-                               _ if err.starts_with("Cannot send value that would overdraw remaining funds.") => {},
-                               _ if err.starts_with("Cannot send value that would not leave enough to pay for fees.") => {},
-                               _ if err.starts_with("Cannot send value that would put our exposure to dust HTLCs at") => {},
+                               _ if err.starts_with("Cannot send less than our next-HTLC minimum - ") => {},
+                               _ if err.starts_with("Cannot send more than our next-HTLC maximum - ") => {},
                                _ => panic!("{}", err),
                        }
+                       assert!(sendable_bounds_violated);
                },
                APIError::MonitorUpdateInProgress => {
                        // We can (obviously) temp-fail a monitor update
@@ -313,17 +309,17 @@ fn check_api_err(api_err: APIError) {
        }
 }
 #[inline]
-fn check_payment_err(send_err: PaymentSendFailure) {
+fn check_payment_err(send_err: PaymentSendFailure, sendable_bounds_violated: bool) {
        match send_err {
-               PaymentSendFailure::ParameterError(api_err) => check_api_err(api_err),
+               PaymentSendFailure::ParameterError(api_err) => check_api_err(api_err, sendable_bounds_violated),
                PaymentSendFailure::PathParameterError(per_path_results) => {
-                       for res in per_path_results { if let Err(api_err) = res { check_api_err(api_err); } }
+                       for res in per_path_results { if let Err(api_err) = res { check_api_err(api_err, sendable_bounds_violated); } }
                },
                PaymentSendFailure::AllFailedResendSafe(per_path_results) => {
-                       for api_err in per_path_results { check_api_err(api_err); }
+                       for api_err in per_path_results { check_api_err(api_err, sendable_bounds_violated); }
                },
                PaymentSendFailure::PartialFailure { results, .. } => {
-                       for res in results { if let Err(api_err) = res { check_api_err(api_err); } }
+                       for res in results { if let Err(api_err) = res { check_api_err(api_err, sendable_bounds_violated); } }
                },
                PaymentSendFailure::DuplicatePayment => panic!(),
        }
@@ -351,20 +347,31 @@ fn send_payment(source: &ChanMan, dest: &ChanMan, dest_chan_id: u64, amt: u64, p
        let mut payment_id = [0; 32];
        payment_id[0..8].copy_from_slice(&payment_idx.to_ne_bytes());
        *payment_idx += 1;
-       if let Err(err) = source.send_payment(&Route {
-               paths: vec![vec![RouteHop {
+       let (min_value_sendable, max_value_sendable) = source.list_usable_channels()
+               .iter().find(|chan| chan.short_channel_id == Some(dest_chan_id))
+               .map(|chan|
+                       (chan.next_outbound_htlc_minimum_msat, chan.next_outbound_htlc_limit_msat))
+               .unwrap_or((0, 0));
+       if let Err(err) = source.send_payment_with_route(&Route {
+               paths: vec![Path { hops: vec![RouteHop {
                        pubkey: dest.get_our_node_id(),
                        node_features: dest.node_features(),
                        short_channel_id: dest_chan_id,
                        channel_features: dest.channel_features(),
                        fee_msat: amt,
                        cltv_expiry_delta: 200,
-               }]],
+               }], blinded_tail: None }],
                payment_params: None,
-       }, payment_hash, &Some(payment_secret), PaymentId(payment_id)) {
-               check_payment_err(err);
+       }, payment_hash, RecipientOnionFields::secret_only(payment_secret), PaymentId(payment_id)) {
+               check_payment_err(err, amt > max_value_sendable || amt < min_value_sendable);
                false
-       } else { true }
+       } else {
+               // Note that while the max is a strict upper-bound, we can occasionally send substantially
+               // below the minimum, with some gap which is unusable immediately below the minimum. Thus,
+               // we don't check against min_value_sendable here.
+               assert!(amt <= max_value_sendable);
+               true
+       }
 }
 #[inline]
 fn send_hop_payment(source: &ChanMan, middle: &ChanMan, middle_chan_id: u64, dest: &ChanMan, dest_chan_id: u64, amt: u64, payment_id: &mut u8, payment_idx: &mut u64) -> bool {
@@ -373,13 +380,19 @@ fn send_hop_payment(source: &ChanMan, middle: &ChanMan, middle_chan_id: u64, des
        let mut payment_id = [0; 32];
        payment_id[0..8].copy_from_slice(&payment_idx.to_ne_bytes());
        *payment_idx += 1;
-       if let Err(err) = source.send_payment(&Route {
-               paths: vec![vec![RouteHop {
+       let (min_value_sendable, max_value_sendable) = source.list_usable_channels()
+               .iter().find(|chan| chan.short_channel_id == Some(middle_chan_id))
+               .map(|chan|
+                       (chan.next_outbound_htlc_minimum_msat, chan.next_outbound_htlc_limit_msat))
+               .unwrap_or((0, 0));
+       let first_hop_fee = 50_000;
+       if let Err(err) = source.send_payment_with_route(&Route {
+               paths: vec![Path { hops: vec![RouteHop {
                        pubkey: middle.get_our_node_id(),
                        node_features: middle.node_features(),
                        short_channel_id: middle_chan_id,
                        channel_features: middle.channel_features(),
-                       fee_msat: 50000,
+                       fee_msat: first_hop_fee,
                        cltv_expiry_delta: 100,
                },RouteHop {
                        pubkey: dest.get_our_node_id(),
@@ -388,12 +401,19 @@ fn send_hop_payment(source: &ChanMan, middle: &ChanMan, middle_chan_id: u64, des
                        channel_features: dest.channel_features(),
                        fee_msat: amt,
                        cltv_expiry_delta: 200,
-               }]],
+               }], blinded_tail: None }],
                payment_params: None,
-       }, payment_hash, &Some(payment_secret), PaymentId(payment_id)) {
-               check_payment_err(err);
+       }, payment_hash, RecipientOnionFields::secret_only(payment_secret), PaymentId(payment_id)) {
+               let sent_amt = amt + first_hop_fee;
+               check_payment_err(err, sent_amt < min_value_sendable || sent_amt > max_value_sendable);
                false
-       } else { true }
+       } else {
+               // Note that while the max is a strict upper-bound, we can occasionally send substantially
+               // below the minimum, with some gap which is unusable immediately below the minimum. Thus,
+               // we don't check against min_value_sendable here.
+               assert!(amt + first_hop_fee <= max_value_sendable);
+               true
+       }
 }
 
 #[inline]
@@ -416,11 +436,12 @@ pub fn do_test<Out: Output>(data: &[u8], underlying_out: Out) {
                        config.channel_config.forwarding_fee_proportional_millionths = 0;
                        config.channel_handshake_config.announced_channel = true;
                        let network = Network::Bitcoin;
+                       let best_block_timestamp = genesis_block(network).header.time;
                        let params = ChainParameters {
                                network,
-                               best_block: BestBlock::from_genesis(network),
+                               best_block: BestBlock::from_network(network),
                        };
-                       (ChannelManager::new($fee_estimator.clone(), monitor.clone(), broadcast.clone(), &router, Arc::clone(&logger), keys_manager.clone(), keys_manager.clone(), keys_manager.clone(), config, params),
+                       (ChannelManager::new($fee_estimator.clone(), monitor.clone(), broadcast.clone(), &router, Arc::clone(&logger), keys_manager.clone(), keys_manager.clone(), keys_manager.clone(), config, params, best_block_timestamp),
                        monitor, keys_manager)
                } }
        }
@@ -474,8 +495,12 @@ pub fn do_test<Out: Output>(data: &[u8], underlying_out: Out) {
        let mut channel_txn = Vec::new();
        macro_rules! make_channel {
                ($source: expr, $dest: expr, $chan_id: expr) => { {
-                       $source.peer_connected(&$dest.get_our_node_id(), &Init { features: $dest.init_features(), remote_network_address: None }).unwrap();
-                       $dest.peer_connected(&$source.get_our_node_id(), &Init { features: $source.init_features(), remote_network_address: None }).unwrap();
+                       $source.peer_connected(&$dest.get_our_node_id(), &Init {
+                               features: $dest.init_features(), networks: None, remote_network_address: None
+                       }, true).unwrap();
+                       $dest.peer_connected(&$source.get_our_node_id(), &Init {
+                               features: $source.init_features(), networks: None, remote_network_address: None
+                       }, false).unwrap();
 
                        $source.create_channel($dest.get_our_node_id(), 100_000, 42, 0, None).unwrap();
                        let open_channel = {
@@ -526,7 +551,18 @@ pub fn do_test<Out: Output>(data: &[u8], underlying_out: Out) {
                                        msg.clone()
                                } else { panic!("Wrong event type"); }
                        };
+                       let events = $dest.get_and_clear_pending_events();
+                       assert_eq!(events.len(), 1);
+                       if let events::Event::ChannelPending{ ref counterparty_node_id, .. } = events[0] {
+                               assert_eq!(counterparty_node_id, &$source.get_our_node_id());
+                       } else { panic!("Wrong event type"); }
+
                        $source.handle_funding_signed(&$dest.get_our_node_id(), &funding_signed);
+                       let events = $source.get_and_clear_pending_events();
+                       assert_eq!(events.len(), 1);
+                       if let events::Event::ChannelPending{ ref counterparty_node_id, .. } = events[0] {
+                               assert_eq!(counterparty_node_id, &$dest.get_our_node_id());
+                       } else { panic!("Wrong event type"); }
 
                        funding_output
                } }
@@ -535,11 +571,11 @@ pub fn do_test<Out: Output>(data: &[u8], underlying_out: Out) {
        macro_rules! confirm_txn {
                ($node: expr) => { {
                        let chain_hash = genesis_block(Network::Bitcoin).block_hash();
-                       let mut header = BlockHeader { version: 0x20000000, prev_blockhash: chain_hash, merkle_root: TxMerkleNode::all_zeros(), time: 42, bits: 42, nonce: 42 };
+                       let mut header = create_dummy_header(chain_hash, 42);
                        let txdata: Vec<_> = channel_txn.iter().enumerate().map(|(i, tx)| (i + 1, tx)).collect();
                        $node.transactions_confirmed(&header, &txdata, 1);
                        for _ in 2..100 {
-                               header = BlockHeader { version: 0x20000000, prev_blockhash: header.block_hash(), merkle_root: TxMerkleNode::all_zeros(), time: 42, bits: 42, nonce: 42 };
+                               header = create_dummy_header(header.block_hash(), 42);
                        }
                        $node.best_block_updated(&header, 99);
                } }
@@ -979,31 +1015,39 @@ pub fn do_test<Out: Output>(data: &[u8], underlying_out: Out) {
 
                        0x0c => {
                                if !chan_a_disconnected {
-                                       nodes[0].peer_disconnected(&nodes[1].get_our_node_id(), false);
-                                       nodes[1].peer_disconnected(&nodes[0].get_our_node_id(), false);
+                                       nodes[0].peer_disconnected(&nodes[1].get_our_node_id());
+                                       nodes[1].peer_disconnected(&nodes[0].get_our_node_id());
                                        chan_a_disconnected = true;
                                        drain_msg_events_on_disconnect!(0);
                                }
                        },
                        0x0d => {
                                if !chan_b_disconnected {
-                                       nodes[1].peer_disconnected(&nodes[2].get_our_node_id(), false);
-                                       nodes[2].peer_disconnected(&nodes[1].get_our_node_id(), false);
+                                       nodes[1].peer_disconnected(&nodes[2].get_our_node_id());
+                                       nodes[2].peer_disconnected(&nodes[1].get_our_node_id());
                                        chan_b_disconnected = true;
                                        drain_msg_events_on_disconnect!(2);
                                }
                        },
                        0x0e => {
                                if chan_a_disconnected {
-                                       nodes[0].peer_connected(&nodes[1].get_our_node_id(), &Init { features: nodes[1].init_features(), remote_network_address: None }).unwrap();
-                                       nodes[1].peer_connected(&nodes[0].get_our_node_id(), &Init { features: nodes[0].init_features(), remote_network_address: None }).unwrap();
+                                       nodes[0].peer_connected(&nodes[1].get_our_node_id(), &Init {
+                                               features: nodes[1].init_features(), networks: None, remote_network_address: None
+                                       }, true).unwrap();
+                                       nodes[1].peer_connected(&nodes[0].get_our_node_id(), &Init {
+                                               features: nodes[0].init_features(), networks: None, remote_network_address: None
+                                       }, false).unwrap();
                                        chan_a_disconnected = false;
                                }
                        },
                        0x0f => {
                                if chan_b_disconnected {
-                                       nodes[1].peer_connected(&nodes[2].get_our_node_id(), &Init { features: nodes[2].init_features(), remote_network_address: None }).unwrap();
-                                       nodes[2].peer_connected(&nodes[1].get_our_node_id(), &Init { features: nodes[1].init_features(), remote_network_address: None }).unwrap();
+                                       nodes[1].peer_connected(&nodes[2].get_our_node_id(), &Init {
+                                               features: nodes[2].init_features(), networks: None, remote_network_address: None
+                                       }, true).unwrap();
+                                       nodes[2].peer_connected(&nodes[1].get_our_node_id(), &Init {
+                                               features: nodes[1].init_features(), networks: None, remote_network_address: None
+                                       }, false).unwrap();
                                        chan_b_disconnected = false;
                                }
                        },
@@ -1040,7 +1084,7 @@ pub fn do_test<Out: Output>(data: &[u8], underlying_out: Out) {
 
                        0x2c => {
                                if !chan_a_disconnected {
-                                       nodes[1].peer_disconnected(&nodes[0].get_our_node_id(), false);
+                                       nodes[1].peer_disconnected(&nodes[0].get_our_node_id());
                                        chan_a_disconnected = true;
                                        drain_msg_events_on_disconnect!(0);
                                }
@@ -1054,14 +1098,14 @@ pub fn do_test<Out: Output>(data: &[u8], underlying_out: Out) {
                        },
                        0x2d => {
                                if !chan_a_disconnected {
-                                       nodes[0].peer_disconnected(&nodes[1].get_our_node_id(), false);
+                                       nodes[0].peer_disconnected(&nodes[1].get_our_node_id());
                                        chan_a_disconnected = true;
                                        nodes[0].get_and_clear_pending_msg_events();
                                        ab_events.clear();
                                        ba_events.clear();
                                }
                                if !chan_b_disconnected {
-                                       nodes[2].peer_disconnected(&nodes[1].get_our_node_id(), false);
+                                       nodes[2].peer_disconnected(&nodes[1].get_our_node_id());
                                        chan_b_disconnected = true;
                                        nodes[2].get_and_clear_pending_msg_events();
                                        bc_events.clear();
@@ -1073,7 +1117,7 @@ pub fn do_test<Out: Output>(data: &[u8], underlying_out: Out) {
                        },
                        0x2e => {
                                if !chan_b_disconnected {
-                                       nodes[1].peer_disconnected(&nodes[2].get_our_node_id(), false);
+                                       nodes[1].peer_disconnected(&nodes[2].get_our_node_id());
                                        chan_b_disconnected = true;
                                        drain_msg_events_on_disconnect!(2);
                                }
@@ -1198,13 +1242,21 @@ pub fn do_test<Out: Output>(data: &[u8], underlying_out: Out) {
 
                                // Next, make sure peers are all connected to each other
                                if chan_a_disconnected {
-                                       nodes[0].peer_connected(&nodes[1].get_our_node_id(), &Init { features: nodes[1].init_features(), remote_network_address: None }).unwrap();
-                                       nodes[1].peer_connected(&nodes[0].get_our_node_id(), &Init { features: nodes[0].init_features(), remote_network_address: None }).unwrap();
+                                       nodes[0].peer_connected(&nodes[1].get_our_node_id(), &Init {
+                                               features: nodes[1].init_features(), networks: None, remote_network_address: None
+                                       }, true).unwrap();
+                                       nodes[1].peer_connected(&nodes[0].get_our_node_id(), &Init {
+                                               features: nodes[0].init_features(), networks: None, remote_network_address: None
+                                       }, false).unwrap();
                                        chan_a_disconnected = false;
                                }
                                if chan_b_disconnected {
-                                       nodes[1].peer_connected(&nodes[2].get_our_node_id(), &Init { features: nodes[2].init_features(), remote_network_address: None }).unwrap();
-                                       nodes[2].peer_connected(&nodes[1].get_our_node_id(), &Init { features: nodes[1].init_features(), remote_network_address: None }).unwrap();
+                                       nodes[1].peer_connected(&nodes[2].get_our_node_id(), &Init {
+                                               features: nodes[2].init_features(), networks: None, remote_network_address: None
+                                       }, true).unwrap();
+                                       nodes[2].peer_connected(&nodes[1].get_our_node_id(), &Init {
+                                               features: nodes[1].init_features(), networks: None, remote_network_address: None
+                                       }, false).unwrap();
                                        chan_b_disconnected = false;
                                }