Move events.rs into its own top-level module
[rust-lightning] / lightning / src / routing / gossip.rs
index dd9cabd25eba50d8aba05e267c6900cb073fb28d..99d100513a33778a9a925e7891be079f92b33347 100644 (file)
@@ -18,6 +18,10 @@ use bitcoin::hashes::sha256d::Hash as Sha256dHash;
 use bitcoin::hashes::Hash;
 use bitcoin::hash_types::BlockHash;
 
+use bitcoin::network::constants::Network;
+use bitcoin::blockdata::constants::genesis_block;
+
+use crate::events::{MessageSendEvent, MessageSendEventsProvider};
 use crate::ln::features::{ChannelFeatures, NodeFeatures, InitFeatures};
 use crate::ln::msgs::{DecodeError, ErrorAction, Init, LightningError, RoutingMessageHandler, NetAddress, MAX_VALUE_MSAT};
 use crate::ln::msgs::{ChannelAnnouncement, ChannelUpdate, NodeAnnouncement, GossipTimestampFilter};
@@ -26,7 +30,6 @@ use crate::ln::msgs;
 use crate::routing::utxo::{self, UtxoLookup};
 use crate::util::ser::{Readable, ReadableArgs, Writeable, Writer, MaybeReadable};
 use crate::util::logger::{Logger, Level};
-use crate::util::events::{MessageSendEvent, MessageSendEventsProvider};
 use crate::util::scid_utils::{block_from_scid, scid_from_parts, MAX_SCID_BLOCK};
 use crate::util::string::PrintableString;
 use crate::util::indexed_map::{IndexedMap, Entry as IndexedMapEntry};
@@ -231,7 +234,7 @@ impl<G: Deref<Target=NetworkGraph<L>>, U: Deref, L: Deref> P2PGossipSync<G, U, L
 where U::Target: UtxoLookup, L::Target: Logger
 {
        /// Creates a new tracker of the actual state of the network of channels and nodes,
-       /// assuming an existing Network Graph.
+       /// assuming an existing [`NetworkGraph`].
        /// UTXO lookup is used to make sure announced channels exist on-chain, channel data is
        /// correct, and the announcement is signed with channel owners' keys.
        pub fn new(network_graph: G, utxo_lookup: Option<U>, logger: L) -> Self {
@@ -272,12 +275,42 @@ where U::Target: UtxoLookup, L::Target: Logger
                        false
                }
        }
+
+       /// Used to broadcast forward gossip messages which were validated async.
+       ///
+       /// Note that this will ignore events other than `Broadcast*` or messages with too much excess
+       /// data.
+       pub(super) fn forward_gossip_msg(&self, mut ev: MessageSendEvent) {
+               match &mut ev {
+                       MessageSendEvent::BroadcastChannelAnnouncement { msg, ref mut update_msg } => {
+                               if msg.contents.excess_data.len() > MAX_EXCESS_BYTES_FOR_RELAY { return; }
+                               if update_msg.as_ref()
+                                       .map(|msg| msg.contents.excess_data.len()).unwrap_or(0) > MAX_EXCESS_BYTES_FOR_RELAY
+                               {
+                                       *update_msg = None;
+                               }
+                       },
+                       MessageSendEvent::BroadcastChannelUpdate { msg } => {
+                               if msg.contents.excess_data.len() > MAX_EXCESS_BYTES_FOR_RELAY { return; }
+                       },
+                       MessageSendEvent::BroadcastNodeAnnouncement { msg } => {
+                               if msg.contents.excess_data.len() >  MAX_EXCESS_BYTES_FOR_RELAY ||
+                                  msg.contents.excess_address_data.len() > MAX_EXCESS_BYTES_FOR_RELAY ||
+                                  msg.contents.excess_data.len() + msg.contents.excess_address_data.len() > MAX_EXCESS_BYTES_FOR_RELAY
+                               {
+                                       return;
+                               }
+                       },
+                       _ => return,
+               }
+               self.pending_events.lock().unwrap().push(ev);
+       }
 }
 
 impl<L: Deref> NetworkGraph<L> where L::Target: Logger {
        /// Handles any network updates originating from [`Event`]s.
        ///
-       /// [`Event`]: crate::util::events::Event
+       /// [`Event`]: crate::events::Event
        pub fn handle_network_update(&self, network_update: &NetworkUpdate) {
                match *network_update {
                        NetworkUpdate::ChannelUpdateMessage { ref msg } => {
@@ -351,7 +384,6 @@ where U::Target: UtxoLookup, L::Target: Logger
 
        fn handle_channel_announcement(&self, msg: &msgs::ChannelAnnouncement) -> Result<bool, LightningError> {
                self.network_graph.update_channel_from_announcement(msg, &self.utxo_lookup)?;
-               log_gossip!(self.logger, "Added channel_announcement for {}{}", msg.contents.short_channel_id, if !msg.contents.excess_data.is_empty() { " with excess uninterpreted data!" } else { "" });
                Ok(msg.contents.excess_data.len() <= MAX_EXCESS_BYTES_FOR_RELAY)
        }
 
@@ -361,7 +393,7 @@ where U::Target: UtxoLookup, L::Target: Logger
        }
 
        fn get_next_channel_announcement(&self, starting_point: u64) -> Option<(ChannelAnnouncement, Option<ChannelUpdate>, Option<ChannelUpdate>)> {
-               let channels = self.network_graph.channels.read().unwrap();
+               let mut channels = self.network_graph.channels.write().unwrap();
                for (_, ref chan) in channels.range(starting_point..) {
                        if chan.announcement_message.is_some() {
                                let chan_announcement = chan.announcement_message.clone().unwrap();
@@ -383,7 +415,7 @@ where U::Target: UtxoLookup, L::Target: Logger
        }
 
        fn get_next_node_announcement(&self, starting_point: Option<&NodeId>) -> Option<NodeAnnouncement> {
-               let nodes = self.network_graph.nodes.read().unwrap();
+               let mut nodes = self.network_graph.nodes.write().unwrap();
                let iter = if let Some(node_id) = starting_point {
                                nodes.range((Bound::Excluded(node_id), Bound::Unbounded))
                        } else {
@@ -400,15 +432,21 @@ where U::Target: UtxoLookup, L::Target: Logger
        }
 
        /// Initiates a stateless sync of routing gossip information with a peer
-       /// using gossip_queries. The default strategy used by this implementation
+       /// using [`gossip_queries`]. The default strategy used by this implementation
        /// is to sync the full block range with several peers.
        ///
-       /// We should expect one or more reply_channel_range messages in response
-       /// to our query_channel_range. Each reply will enqueue a query_scid message
+       /// We should expect one or more [`reply_channel_range`] messages in response
+       /// to our [`query_channel_range`]. Each reply will enqueue a [`query_scid`] message
        /// to request gossip messages for each channel. The sync is considered complete
-       /// when the final reply_scids_end message is received, though we are not
+       /// when the final [`reply_scids_end`] message is received, though we are not
        /// tracking this directly.
-       fn peer_connected(&self, their_node_id: &PublicKey, init_msg: &Init) -> Result<(), ()> {
+       ///
+       /// [`gossip_queries`]: https://github.com/lightning/bolts/blob/master/07-routing-gossip.md#query-messages
+       /// [`reply_channel_range`]: msgs::ReplyChannelRange
+       /// [`query_channel_range`]: msgs::QueryChannelRange
+       /// [`query_scid`]: msgs::QueryShortChannelIds
+       /// [`reply_scids_end`]: msgs::ReplyShortChannelIdsEnd
+       fn peer_connected(&self, their_node_id: &PublicKey, init_msg: &Init, _inbound: bool) -> Result<(), ()> {
                // We will only perform a sync with peers that support gossip_queries.
                if !init_msg.features.supports_gossip_queries() {
                        // Don't disconnect peers for not supporting gossip queries. We may wish to have
@@ -543,7 +581,7 @@ where U::Target: UtxoLookup, L::Target: Logger
                // (has at least one update). A peer may still want to know the channel
                // exists even if its not yet routable.
                let mut batches: Vec<Vec<u64>> = vec![Vec::with_capacity(MAX_SCIDS_PER_REPLY)];
-               let channels = self.network_graph.channels.read().unwrap();
+               let mut channels = self.network_graph.channels.write().unwrap();
                for (_, ref chan) in channels.range(inclusive_start_scid.unwrap()..exclusive_end_scid.unwrap()) {
                        if let Some(chan_announcement) = &chan.announcement_message {
                                // Construct a new batch if last one is full
@@ -627,6 +665,10 @@ where U::Target: UtxoLookup, L::Target: Logger
                features.set_gossip_queries_optional();
                features
        }
+
+       fn processing_queue_high(&self) -> bool {
+               self.network_graph.pending_checks.too_many_checks_pending()
+       }
 }
 
 impl<G: Deref<Target=NetworkGraph<L>>, U: Deref, L: Deref> MessageSendEventsProvider for P2PGossipSync<G, U, L>
@@ -850,9 +892,9 @@ impl Readable for ChannelInfo {
                        (0, features, required),
                        (1, announcement_received_time, (default_value, 0)),
                        (2, node_one, required),
-                       (4, one_to_two_wrap, ignorable),
+                       (4, one_to_two_wrap, upgradable_option),
                        (6, node_two, required),
-                       (8, two_to_one_wrap, ignorable),
+                       (8, two_to_one_wrap, upgradable_option),
                        (10, capacity_sats, required),
                        (12, announcement_message, required),
                });
@@ -935,7 +977,7 @@ impl<'a> fmt::Debug for DirectedChannelInfo<'a> {
 ///
 /// While this may be smaller than the actual channel capacity, amounts greater than
 /// [`Self::as_msat`] should not be routed through the channel.
-#[derive(Clone, Copy, Debug)]
+#[derive(Clone, Copy, Debug, PartialEq)]
 pub enum EffectiveCapacity {
        /// The available liquidity in the channel known from being a channel counterparty, and thus a
        /// direct hop.
@@ -984,7 +1026,7 @@ impl EffectiveCapacity {
 /// Fees for routing via a given channel or a node
 #[derive(Eq, PartialEq, Copy, Clone, Debug, Hash)]
 pub struct RoutingFees {
-       /// Flat routing fee in satoshis
+       /// Flat routing fee in millisatoshis.
        pub base_msat: u32,
        /// Liquidity-based routing fee in millionths of a routed amount.
        /// In other words, 10000 is 1%.
@@ -1010,8 +1052,6 @@ pub struct NodeAnnouncementInfo {
        /// May be invalid or malicious (eg control chars),
        /// should not be exposed to the user.
        pub alias: NodeAlias,
-       /// Internet-level addresses via which one can connect to the node
-       pub addresses: Vec<NetAddress>,
        /// An initial announcement of the node
        /// Mostly redundant with the data we store in fields explicitly.
        /// Everything else is useful only for sending out for initial routing sync.
@@ -1019,14 +1059,45 @@ pub struct NodeAnnouncementInfo {
        pub announcement_message: Option<NodeAnnouncement>
 }
 
-impl_writeable_tlv_based!(NodeAnnouncementInfo, {
-       (0, features, required),
-       (2, last_update, required),
-       (4, rgb, required),
-       (6, alias, required),
-       (8, announcement_message, option),
-       (10, addresses, vec_type),
-});
+impl NodeAnnouncementInfo {
+       /// Internet-level addresses via which one can connect to the node
+       pub fn addresses(&self) -> &[NetAddress] {
+               self.announcement_message.as_ref()
+                       .map(|msg| msg.contents.addresses.as_slice())
+                       .unwrap_or_default()
+       }
+}
+
+impl Writeable for NodeAnnouncementInfo {
+       fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
+               let empty_addresses = Vec::<NetAddress>::new();
+               write_tlv_fields!(writer, {
+                       (0, self.features, required),
+                       (2, self.last_update, required),
+                       (4, self.rgb, required),
+                       (6, self.alias, required),
+                       (8, self.announcement_message, option),
+                       (10, empty_addresses, vec_type), // Versions prior to 0.0.115 require this field
+               });
+               Ok(())
+       }
+}
+
+impl Readable for NodeAnnouncementInfo {
+    fn read<R: io::Read>(reader: &mut R) -> Result<Self, DecodeError> {
+               _init_and_read_tlv_fields!(reader, {
+                       (0, features, required),
+                       (2, last_update, required),
+                       (4, rgb, required),
+                       (6, alias, required),
+                       (8, announcement_message, option),
+                       (10, _addresses, vec_type), // deprecated, not used anymore
+               });
+               let _: Option<Vec<NetAddress>> = _addresses;
+               Ok(Self { features: features.0.unwrap(), last_update: last_update.0.unwrap(), rgb: rgb.0.unwrap(),
+                       alias: alias.0.unwrap(), announcement_message })
+    }
+}
 
 /// A user-defined name for a node, which may be used when displaying the node in a graph.
 ///
@@ -1097,7 +1168,7 @@ impl Writeable for NodeInfo {
        }
 }
 
-// A wrapper allowing for the optional deseralization of `NodeAnnouncementInfo`. Utilizing this is
+// A wrapper allowing for the optional deserialization of `NodeAnnouncementInfo`. Utilizing this is
 // necessary to maintain compatibility with previous serializations of `NetAddress` that have an
 // invalid hostname set. We ignore and eat all errors until we are either able to read a
 // `NodeAnnouncementInfo` or hit a `ShortRead`, i.e., read the TLV field to the end.
@@ -1128,7 +1199,7 @@ impl Readable for NodeInfo {
 
                read_tlv_fields!(reader, {
                        (0, _lowest_inbound_channel_fees, option),
-                       (2, announcement_info_wrap, ignorable),
+                       (2, announcement_info_wrap, upgradable_option),
                        (4, channels, vec_type),
                });
 
@@ -1232,10 +1303,10 @@ impl<L: Deref> PartialEq for NetworkGraph<L> where L::Target: Logger {
 
 impl<L: Deref> NetworkGraph<L> where L::Target: Logger {
        /// Creates a new, empty, network graph.
-       pub fn new(genesis_hash: BlockHash, logger: L) -> NetworkGraph<L> {
+       pub fn new(network: Network, logger: L) -> NetworkGraph<L> {
                Self {
                        secp_ctx: Secp256k1::verification_only(),
-                       genesis_hash,
+                       genesis_hash: genesis_block(network).header.block_hash(),
                        logger,
                        channels: RwLock::new(IndexedMap::new()),
                        nodes: RwLock::new(IndexedMap::new()),
@@ -1298,8 +1369,13 @@ impl<L: Deref> NetworkGraph<L> where L::Target: Logger {
        }
 
        fn update_node_from_announcement_intern(&self, msg: &msgs::UnsignedNodeAnnouncement, full_msg: Option<&msgs::NodeAnnouncement>) -> Result<(), LightningError> {
-               match self.nodes.write().unwrap().get_mut(&msg.node_id) {
-                       None => Err(LightningError{err: "No existing channels for node_announcement".to_owned(), action: ErrorAction::IgnoreError}),
+               let mut nodes = self.nodes.write().unwrap();
+               match nodes.get_mut(&msg.node_id) {
+                       None => {
+                               core::mem::drop(nodes);
+                               self.pending_checks.check_hold_pending_node_announcement(msg, full_msg)?;
+                               Err(LightningError{err: "No existing channels for node_announcement".to_owned(), action: ErrorAction::IgnoreError})
+                       },
                        Some(node) => {
                                if let Some(node_info) = node.announcement_info.as_ref() {
                                        // The timestamp field is somewhat of a misnomer - the BOLTs use it to order
@@ -1321,7 +1397,6 @@ impl<L: Deref> NetworkGraph<L> where L::Target: Logger {
                                        last_update: msg.timestamp,
                                        rgb: msg.rgb,
                                        alias: NodeAlias(msg.alias),
-                                       addresses: msg.addresses.clone(),
                                        announcement_message: if should_relay { full_msg.cloned() } else { None },
                                });
 
@@ -1520,7 +1595,10 @@ impl<L: Deref> NetworkGraph<L> where L::Target: Logger {
                        announcement_received_time,
                };
 
-               self.add_channel_between_nodes(msg.short_channel_id, chan_info, utxo_value)
+               self.add_channel_between_nodes(msg.short_channel_id, chan_info, utxo_value)?;
+
+               log_gossip!(self.logger, "Added channel_announcement for {}{}", msg.short_channel_id, if !msg.excess_data.is_empty() { " with excess uninterpreted data!" } else { "" });
+               Ok(())
        }
 
        /// Marks a channel in the graph as failed if a corresponding HTLC fail was sent.
@@ -1724,7 +1802,11 @@ impl<L: Deref> NetworkGraph<L> where L::Target: Logger {
 
                let mut channels = self.channels.write().unwrap();
                match channels.get_mut(&msg.short_channel_id) {
-                       None => return Err(LightningError{err: "Couldn't find channel for update".to_owned(), action: ErrorAction::IgnoreError}),
+                       None => {
+                               core::mem::drop(channels);
+                               self.pending_checks.check_hold_pending_channel_update(msg, full_msg)?;
+                               return Err(LightningError{err: "Couldn't find channel for update".to_owned(), action: ErrorAction::IgnoreError});
+                       },
                        Some(channel) => {
                                if msg.htlc_maximum_msat > MAX_VALUE_MSAT {
                                        return Err(LightningError{err:
@@ -1868,30 +1950,26 @@ impl ReadOnlyNetworkGraph<'_> {
        /// Returns None if the requested node is completely unknown,
        /// or if node announcement for the node was never received.
        pub fn get_addresses(&self, pubkey: &PublicKey) -> Option<Vec<NetAddress>> {
-               if let Some(node) = self.nodes.get(&NodeId::from_pubkey(&pubkey)) {
-                       if let Some(node_info) = node.announcement_info.as_ref() {
-                               return Some(node_info.addresses.clone())
-                       }
-               }
-               None
+               self.nodes.get(&NodeId::from_pubkey(&pubkey))
+                       .and_then(|node| node.announcement_info.as_ref().map(|ann| ann.addresses().to_vec()))
        }
 }
 
 #[cfg(test)]
-mod tests {
+pub(crate) mod tests {
+       use crate::events::{MessageSendEvent, MessageSendEventsProvider};
        use crate::ln::channelmanager;
        use crate::ln::chan_utils::make_funding_redeemscript;
        #[cfg(feature = "std")]
        use crate::ln::features::InitFeatures;
        use crate::routing::gossip::{P2PGossipSync, NetworkGraph, NetworkUpdate, NodeAlias, MAX_EXCESS_BYTES_FOR_RELAY, NodeId, RoutingFees, ChannelUpdateInfo, ChannelInfo, NodeAnnouncementInfo, NodeInfo};
-       use crate::routing::utxo::UtxoLookupError;
+       use crate::routing::utxo::{UtxoLookupError, UtxoResult};
        use crate::ln::msgs::{RoutingMessageHandler, UnsignedNodeAnnouncement, NodeAnnouncement,
                UnsignedChannelAnnouncement, ChannelAnnouncement, UnsignedChannelUpdate, ChannelUpdate,
                ReplyChannelRange, QueryChannelRange, QueryShortChannelIds, MAX_VALUE_MSAT};
        use crate::util::config::UserConfig;
        use crate::util::test_utils;
-       use crate::util::ser::{ReadableArgs, Writeable};
-       use crate::util::events::{MessageSendEvent, MessageSendEventsProvider};
+       use crate::util::ser::{ReadableArgs, Readable, Writeable};
        use crate::util::scid_utils::scid_from_parts;
 
        use crate::routing::gossip::REMOVED_ENTRIES_TRACKING_AGE_LIMIT_SECS;
@@ -1915,9 +1993,8 @@ mod tests {
        use crate::sync::Arc;
 
        fn create_network_graph() -> NetworkGraph<Arc<test_utils::TestLogger>> {
-               let genesis_hash = genesis_block(Network::Testnet).header.block_hash();
                let logger = Arc::new(test_utils::TestLogger::new());
-               NetworkGraph::new(genesis_hash, logger)
+               NetworkGraph::new(Network::Testnet, logger)
        }
 
        fn create_gossip_sync(network_graph: &NetworkGraph<Arc<test_utils::TestLogger>>) -> (
@@ -1945,7 +2022,7 @@ mod tests {
                assert!(!gossip_sync.should_request_full_sync(&node_id));
        }
 
-       fn get_signed_node_announcement<F: Fn(&mut UnsignedNodeAnnouncement)>(f: F, node_key: &SecretKey, secp_ctx: &Secp256k1<secp256k1::All>) -> NodeAnnouncement {
+       pub(crate) fn get_signed_node_announcement<F: Fn(&mut UnsignedNodeAnnouncement)>(f: F, node_key: &SecretKey, secp_ctx: &Secp256k1<secp256k1::All>) -> NodeAnnouncement {
                let node_id = NodeId::from_pubkey(&PublicKey::from_secret_key(&secp_ctx, node_key));
                let mut unsigned_announcement = UnsignedNodeAnnouncement {
                        features: channelmanager::provided_node_features(&UserConfig::default()),
@@ -1965,7 +2042,7 @@ mod tests {
                }
        }
 
-       fn get_signed_channel_announcement<F: Fn(&mut UnsignedChannelAnnouncement)>(f: F, node_1_key: &SecretKey, node_2_key: &SecretKey, secp_ctx: &Secp256k1<secp256k1::All>) -> ChannelAnnouncement {
+       pub(crate) fn get_signed_channel_announcement<F: Fn(&mut UnsignedChannelAnnouncement)>(f: F, node_1_key: &SecretKey, node_2_key: &SecretKey, secp_ctx: &Secp256k1<secp256k1::All>) -> ChannelAnnouncement {
                let node_id_1 = PublicKey::from_secret_key(&secp_ctx, node_1_key);
                let node_id_2 = PublicKey::from_secret_key(&secp_ctx, node_2_key);
                let node_1_btckey = &SecretKey::from_slice(&[40; 32]).unwrap();
@@ -1992,14 +2069,14 @@ mod tests {
                }
        }
 
-       fn get_channel_script(secp_ctx: &Secp256k1<secp256k1::All>) -> Script {
+       pub(crate) fn get_channel_script(secp_ctx: &Secp256k1<secp256k1::All>) -> Script {
                let node_1_btckey = SecretKey::from_slice(&[40; 32]).unwrap();
                let node_2_btckey = SecretKey::from_slice(&[39; 32]).unwrap();
                make_funding_redeemscript(&PublicKey::from_secret_key(secp_ctx, &node_1_btckey),
                        &PublicKey::from_secret_key(secp_ctx, &node_2_btckey)).to_v0_p2wsh()
        }
 
-       fn get_signed_channel_update<F: Fn(&mut UnsignedChannelUpdate)>(f: F, node_key: &SecretKey, secp_ctx: &Secp256k1<secp256k1::All>) -> ChannelUpdate {
+       pub(crate) fn get_signed_channel_update<F: Fn(&mut UnsignedChannelUpdate)>(f: F, node_key: &SecretKey, secp_ctx: &Secp256k1<secp256k1::All>) -> ChannelUpdate {
                let mut unsigned_channel_update = UnsignedChannelUpdate {
                        chain_hash: genesis_block(Network::Testnet).header.block_hash(),
                        short_channel_id: 0,
@@ -2092,8 +2169,7 @@ mod tests {
                let valid_announcement = get_signed_channel_announcement(|_| {}, node_1_privkey, node_2_privkey, &secp_ctx);
 
                // Test if the UTXO lookups were not supported
-               let genesis_hash = genesis_block(Network::Testnet).header.block_hash();
-               let network_graph = NetworkGraph::new(genesis_hash, &logger);
+               let network_graph = NetworkGraph::new(Network::Testnet, &logger);
                let mut gossip_sync = P2PGossipSync::new(&network_graph, None, &logger);
                match gossip_sync.handle_channel_announcement(&valid_announcement) {
                        Ok(res) => assert!(res),
@@ -2116,8 +2192,8 @@ mod tests {
 
                // Test if an associated transaction were not on-chain (or not confirmed).
                let chain_source = test_utils::TestChainSource::new(Network::Testnet);
-               *chain_source.utxo_ret.lock().unwrap() = Err(UtxoLookupError::UnknownTx);
-               let network_graph = NetworkGraph::new(genesis_hash, &logger);
+               *chain_source.utxo_ret.lock().unwrap() = UtxoResult::Sync(Err(UtxoLookupError::UnknownTx));
+               let network_graph = NetworkGraph::new(Network::Testnet, &logger);
                gossip_sync = P2PGossipSync::new(&network_graph, Some(&chain_source), &logger);
 
                let valid_announcement = get_signed_channel_announcement(|unsigned_announcement| {
@@ -2129,7 +2205,8 @@ mod tests {
                };
 
                // Now test if the transaction is found in the UTXO set and the script is correct.
-               *chain_source.utxo_ret.lock().unwrap() = Ok(TxOut { value: 0, script_pubkey: good_script.clone() });
+               *chain_source.utxo_ret.lock().unwrap() =
+                       UtxoResult::Sync(Ok(TxOut { value: 0, script_pubkey: good_script.clone() }));
                let valid_announcement = get_signed_channel_announcement(|unsigned_announcement| {
                        unsigned_announcement.short_channel_id += 2;
                }, node_1_privkey, node_2_privkey, &secp_ctx);
@@ -2147,7 +2224,8 @@ mod tests {
 
                // If we receive announcement for the same channel, once we've validated it against the
                // chain, we simply ignore all new (duplicate) announcements.
-               *chain_source.utxo_ret.lock().unwrap() = Ok(TxOut { value: 0, script_pubkey: good_script });
+               *chain_source.utxo_ret.lock().unwrap() =
+                       UtxoResult::Sync(Ok(TxOut { value: 0, script_pubkey: good_script }));
                match gossip_sync.handle_channel_announcement(&valid_announcement) {
                        Ok(_) => panic!(),
                        Err(e) => assert_eq!(e.err, "Already have chain-validated channel")
@@ -2208,8 +2286,7 @@ mod tests {
                let secp_ctx = Secp256k1::new();
                let logger = test_utils::TestLogger::new();
                let chain_source = test_utils::TestChainSource::new(Network::Testnet);
-               let genesis_hash = genesis_block(Network::Testnet).header.block_hash();
-               let network_graph = NetworkGraph::new(genesis_hash, &logger);
+               let network_graph = NetworkGraph::new(Network::Testnet, &logger);
                let gossip_sync = P2PGossipSync::new(&network_graph, Some(&chain_source), &logger);
 
                let node_1_privkey = &SecretKey::from_slice(&[42; 32]).unwrap();
@@ -2221,7 +2298,8 @@ mod tests {
                {
                        // Announce a channel we will update
                        let good_script = get_channel_script(&secp_ctx);
-                       *chain_source.utxo_ret.lock().unwrap() = Ok(TxOut { value: amount_sats, script_pubkey: good_script.clone() });
+                       *chain_source.utxo_ret.lock().unwrap() =
+                               UtxoResult::Sync(Ok(TxOut { value: amount_sats, script_pubkey: good_script.clone() }));
 
                        let valid_channel_announcement = get_signed_channel_announcement(|_| {}, node_1_privkey, node_2_privkey, &secp_ctx);
                        short_channel_id = valid_channel_announcement.contents.short_channel_id;
@@ -2310,8 +2388,7 @@ mod tests {
        #[test]
        fn handling_network_update() {
                let logger = test_utils::TestLogger::new();
-               let genesis_hash = genesis_block(Network::Testnet).header.block_hash();
-               let network_graph = NetworkGraph::new(genesis_hash, &logger);
+               let network_graph = NetworkGraph::new(Network::Testnet, &logger);
                let secp_ctx = Secp256k1::new();
 
                let node_1_privkey = &SecretKey::from_slice(&[42; 32]).unwrap();
@@ -2376,7 +2453,7 @@ mod tests {
 
                {
                        // Get a new network graph since we don't want to track removed nodes in this test with "std"
-                       let network_graph = NetworkGraph::new(genesis_hash, &logger);
+                       let network_graph = NetworkGraph::new(Network::Testnet, &logger);
 
                        // Announce a channel to test permanent node failure
                        let valid_channel_announcement = get_signed_channel_announcement(|_| {}, node_1_privkey, node_2_privkey, &secp_ctx);
@@ -2411,8 +2488,7 @@ mod tests {
                // Test the removal of channels with `remove_stale_channels_and_tracking`.
                let logger = test_utils::TestLogger::new();
                let chain_source = test_utils::TestChainSource::new(Network::Testnet);
-               let genesis_hash = genesis_block(Network::Testnet).header.block_hash();
-               let network_graph = NetworkGraph::new(genesis_hash, &logger);
+               let network_graph = NetworkGraph::new(Network::Testnet, &logger);
                let gossip_sync = P2PGossipSync::new(&network_graph, Some(&chain_source), &logger);
                let secp_ctx = Secp256k1::new();
 
@@ -2743,7 +2819,7 @@ mod tests {
                // It should ignore if gossip_queries feature is not enabled
                {
                        let init_msg = Init { features: InitFeatures::empty(), remote_network_address: None };
-                       gossip_sync.peer_connected(&node_id_1, &init_msg).unwrap();
+                       gossip_sync.peer_connected(&node_id_1, &init_msg, true).unwrap();
                        let events = gossip_sync.get_and_clear_pending_msg_events();
                        assert_eq!(events.len(), 0);
                }
@@ -2753,7 +2829,7 @@ mod tests {
                        let mut features = InitFeatures::empty();
                        features.set_gossip_queries_optional();
                        let init_msg = Init { features, remote_network_address: None };
-                       gossip_sync.peer_connected(&node_id_1, &init_msg).unwrap();
+                       gossip_sync.peer_connected(&node_id_1, &init_msg, true).unwrap();
                        let events = gossip_sync.get_and_clear_pending_msg_events();
                        assert_eq!(events.len(), 1);
                        match &events[0] {
@@ -3198,26 +3274,25 @@ mod tests {
 
        #[test]
        fn node_info_is_readable() {
-               use std::convert::TryFrom;
-
                // 1. Check we can read a valid NodeAnnouncementInfo and fail on an invalid one
-               let valid_netaddr = crate::ln::msgs::NetAddress::Hostname { hostname: crate::util::ser::Hostname::try_from("A".to_string()).unwrap(), port: 1234 };
+               let announcement_message = hex::decode("d977cb9b53d93a6ff64bb5f1e158b4094b66e798fb12911168a3ccdf80a83096340a6a95da0ae8d9f776528eecdbb747eb6b545495a4319ed5378e35b21e073a000122013413a7031b84c5567b126440995d3ed5aaba0565d71e1834604819ff9c17f5e9d5dd078f2020201010101010101010101010101010101010101010101010101010101010101010000701fffefdfc2607").unwrap();
+               let announcement_message = NodeAnnouncement::read(&mut announcement_message.as_slice()).unwrap();
                let valid_node_ann_info = NodeAnnouncementInfo {
                        features: channelmanager::provided_node_features(&UserConfig::default()),
                        last_update: 0,
                        rgb: [0u8; 3],
                        alias: NodeAlias([0u8; 32]),
-                       addresses: vec![valid_netaddr],
-                       announcement_message: None,
+                       announcement_message: Some(announcement_message)
                };
 
                let mut encoded_valid_node_ann_info = Vec::new();
                assert!(valid_node_ann_info.write(&mut encoded_valid_node_ann_info).is_ok());
-               let read_valid_node_ann_info: NodeAnnouncementInfo = crate::util::ser::Readable::read(&mut encoded_valid_node_ann_info.as_slice()).unwrap();
+               let read_valid_node_ann_info = NodeAnnouncementInfo::read(&mut encoded_valid_node_ann_info.as_slice()).unwrap();
                assert_eq!(read_valid_node_ann_info, valid_node_ann_info);
+               assert_eq!(read_valid_node_ann_info.addresses().len(), 1);
 
                let encoded_invalid_node_ann_info = hex::decode("3f0009000788a000080a51a20204000000000403000000062000000000000000000000000000000000000000000000000000000000000000000a0505014004d2").unwrap();
-               let read_invalid_node_ann_info_res: Result<NodeAnnouncementInfo, crate::ln::msgs::DecodeError> = crate::util::ser::Readable::read(&mut encoded_invalid_node_ann_info.as_slice());
+               let read_invalid_node_ann_info_res = NodeAnnouncementInfo::read(&mut encoded_invalid_node_ann_info.as_slice());
                assert!(read_invalid_node_ann_info_res.is_err());
 
                // 2. Check we can read a NodeInfo anyways, but set the NodeAnnouncementInfo to None if invalid
@@ -3228,13 +3303,22 @@ mod tests {
 
                let mut encoded_valid_node_info = Vec::new();
                assert!(valid_node_info.write(&mut encoded_valid_node_info).is_ok());
-               let read_valid_node_info: NodeInfo = crate::util::ser::Readable::read(&mut encoded_valid_node_info.as_slice()).unwrap();
+               let read_valid_node_info = NodeInfo::read(&mut encoded_valid_node_info.as_slice()).unwrap();
                assert_eq!(read_valid_node_info, valid_node_info);
 
                let encoded_invalid_node_info_hex = hex::decode("4402403f0009000788a000080a51a20204000000000403000000062000000000000000000000000000000000000000000000000000000000000000000a0505014004d20400").unwrap();
-               let read_invalid_node_info: NodeInfo = crate::util::ser::Readable::read(&mut encoded_invalid_node_info_hex.as_slice()).unwrap();
+               let read_invalid_node_info = NodeInfo::read(&mut encoded_invalid_node_info_hex.as_slice()).unwrap();
                assert_eq!(read_invalid_node_info.announcement_info, None);
        }
+
+       #[test]
+       fn test_node_info_keeps_compatibility() {
+               let old_ann_info_with_addresses = hex::decode("3f0009000708a000080a51220204000000000403000000062000000000000000000000000000000000000000000000000000000000000000000a0505014104d2").unwrap();
+               let ann_info_with_addresses = NodeAnnouncementInfo::read(&mut old_ann_info_with_addresses.as_slice())
+                               .expect("to be able to read an old NodeAnnouncementInfo with addresses");
+               // This serialized info has an address field but no announcement_message, therefore the addresses returned by our function will still be empty
+               assert!(ann_info_with_addresses.addresses().is_empty());
+       }
 }
 
 #[cfg(all(test, feature = "_bench_unstable"))]