Combine common fields of `OpenChannel` & `OpenChannelV2` into struct
[rust-lightning] / lightning / src / ln / peer_handler.rs
index 84fb9748b4631cd4f49d17c3e2f0f9db680765db..0b752161b6aff18dee9c2a8982ee25545d85d2b8 100644 (file)
 use bitcoin::blockdata::constants::ChainHash;
 use bitcoin::secp256k1::{self, Secp256k1, SecretKey, PublicKey};
 
-use crate::sign::{KeysManager, NodeSigner, Recipient};
-use crate::events::{MessageSendEvent, MessageSendEventsProvider};
+use crate::sign::{NodeSigner, Recipient};
+use crate::events::{EventHandler, EventsProvider, MessageSendEvent, MessageSendEventsProvider};
 use crate::ln::ChannelId;
 use crate::ln::features::{InitFeatures, NodeFeatures};
 use crate::ln::msgs;
 use crate::ln::msgs::{ChannelMessageHandler, LightningError, SocketAddress, OnionMessageHandler, RoutingMessageHandler};
-use crate::ln::channelmanager::{SimpleArcChannelManager, SimpleRefChannelManager};
 use crate::util::ser::{VecWriter, Writeable, Writer};
-use crate::ln::peer_channel_encryptor::{PeerChannelEncryptor,NextNoiseStep};
+use crate::ln::peer_channel_encryptor::{PeerChannelEncryptor, NextNoiseStep, MessageBuf, MSG_BUF_ALLOC_SIZE};
 use crate::ln::wire;
 use crate::ln::wire::{Encode, Type};
-use crate::onion_message::{CustomOnionMessageHandler, OffersMessage, OffersMessageHandler, OnionMessageContents, SimpleArcOnionMessenger, SimpleRefOnionMessenger};
-use crate::routing::gossip::{NetworkGraph, P2PGossipSync, NodeId, NodeAlias};
+use crate::onion_message::messenger::{CustomOnionMessageHandler, PendingOnionMessage};
+use crate::onion_message::offers::{OffersMessage, OffersMessageHandler};
+use crate::onion_message::packet::OnionMessageContents;
+use crate::routing::gossip::{NodeId, NodeAlias};
 use crate::util::atomic_counter::AtomicCounter;
-use crate::util::logger::Logger;
+use crate::util::logger::{Logger, WithContext};
 use crate::util::string::PrintableString;
 
 use crate::prelude::*;
 use crate::io;
-use alloc::collections::LinkedList;
-use crate::sync::{Arc, Mutex, MutexGuard, FairRwLock};
+use alloc::collections::VecDeque;
+use crate::sync::{Mutex, MutexGuard, FairRwLock};
 use core::sync::atomic::{AtomicBool, AtomicU32, AtomicI32, Ordering};
 use core::{cmp, hash, fmt, mem};
 use core::ops::Deref;
 use core::convert::Infallible;
-#[cfg(feature = "std")] use std::error;
+#[cfg(feature = "std")]
+use std::error;
+#[cfg(not(c_bindings))]
+use {
+       crate::ln::channelmanager::{SimpleArcChannelManager, SimpleRefChannelManager},
+       crate::onion_message::messenger::{SimpleArcOnionMessenger, SimpleRefOnionMessenger},
+       crate::routing::gossip::{NetworkGraph, P2PGossipSync},
+       crate::sign::KeysManager,
+       crate::sync::Arc,
+};
 
 use bitcoin::hashes::sha256::Hash as Sha256;
 use bitcoin::hashes::sha256::HashEngine as Sha256Engine;
@@ -86,6 +96,9 @@ pub trait CustomMessageHandler: wire::CustomMessageReader {
 /// A dummy struct which implements `RoutingMessageHandler` without storing any routing information
 /// or doing any processing. You can provide one of these as the route_handler in a MessageHandler.
 pub struct IgnoringMessageHandler{}
+impl EventsProvider for IgnoringMessageHandler {
+       fn process_pending_events<H: Deref>(&self, _handler: H) where H::Target: EventHandler {}
+}
 impl MessageSendEventsProvider for IgnoringMessageHandler {
        fn get_and_clear_pending_msg_events(&self) -> Vec<MessageSendEvent> { Vec::new() }
 }
@@ -112,6 +125,7 @@ impl OnionMessageHandler for IgnoringMessageHandler {
        fn next_onion_message_for_peer(&self, _peer_node_id: PublicKey) -> Option<msgs::OnionMessage> { None }
        fn peer_connected(&self, _their_node_id: &PublicKey, _init: &msgs::Init, _inbound: bool) -> Result<(), ()> { Ok(()) }
        fn peer_disconnected(&self, _their_node_id: &PublicKey) {}
+       fn timer_tick_occurred(&self) {}
        fn provided_node_features(&self) -> NodeFeatures { NodeFeatures::empty() }
        fn provided_init_features(&self, _their_node_id: &PublicKey) -> InitFeatures {
                InitFeatures::empty()
@@ -129,6 +143,9 @@ impl CustomOnionMessageHandler for IgnoringMessageHandler {
        fn read_custom_message<R: io::Read>(&self, _msg_type: u64, _buffer: &mut R) -> Result<Option<Infallible>, msgs::DecodeError> where Self: Sized {
                Ok(None)
        }
+       fn release_pending_custom_messages(&self) -> Vec<PendingOnionMessage<Infallible>> {
+               vec![]
+       }
 }
 
 impl OnionMessageContents for Infallible {
@@ -205,7 +222,7 @@ impl ChannelMessageHandler for ErroringMessageHandler {
        // Any messages which are related to a specific channel generate an error message to let the
        // peer know we don't care about channels.
        fn handle_open_channel(&self, their_node_id: &PublicKey, msg: &msgs::OpenChannel) {
-               ErroringMessageHandler::push_error(self, their_node_id, msg.temporary_channel_id);
+               ErroringMessageHandler::push_error(self, their_node_id, msg.common_fields.temporary_channel_id);
        }
        fn handle_accept_channel(&self, their_node_id: &PublicKey, msg: &msgs::AcceptChannel) {
                ErroringMessageHandler::push_error(self, their_node_id, msg.temporary_channel_id);
@@ -225,6 +242,18 @@ impl ChannelMessageHandler for ErroringMessageHandler {
        fn handle_closing_signed(&self, their_node_id: &PublicKey, msg: &msgs::ClosingSigned) {
                ErroringMessageHandler::push_error(self, their_node_id, msg.channel_id);
        }
+       fn handle_stfu(&self, their_node_id: &PublicKey, msg: &msgs::Stfu) {
+               ErroringMessageHandler::push_error(&self, their_node_id, msg.channel_id);
+       }
+       fn handle_splice(&self, their_node_id: &PublicKey, msg: &msgs::Splice) {
+               ErroringMessageHandler::push_error(&self, their_node_id, msg.channel_id);
+       }
+       fn handle_splice_ack(&self, their_node_id: &PublicKey, msg: &msgs::SpliceAck) {
+               ErroringMessageHandler::push_error(&self, their_node_id, msg.channel_id);
+       }
+       fn handle_splice_locked(&self, their_node_id: &PublicKey, msg: &msgs::SpliceLocked) {
+               ErroringMessageHandler::push_error(&self, their_node_id, msg.channel_id);
+       }
        fn handle_update_add_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateAddHTLC) {
                ErroringMessageHandler::push_error(self, their_node_id, msg.channel_id);
        }
@@ -274,6 +303,7 @@ impl ChannelMessageHandler for ErroringMessageHandler {
                features.set_channel_type_optional();
                features.set_scid_privacy_optional();
                features.set_zero_conf_optional();
+               features.set_route_blinding_optional();
                features
        }
 
@@ -285,7 +315,7 @@ impl ChannelMessageHandler for ErroringMessageHandler {
        }
 
        fn handle_open_channel_v2(&self, their_node_id: &PublicKey, msg: &msgs::OpenChannelV2) {
-               ErroringMessageHandler::push_error(self, their_node_id, msg.temporary_channel_id);
+               ErroringMessageHandler::push_error(self, their_node_id, msg.common_fields.temporary_channel_id);
        }
 
        fn handle_accept_channel_v2(&self, their_node_id: &PublicKey, msg: &msgs::AcceptChannelV2) {
@@ -355,7 +385,7 @@ pub struct MessageHandler<CM: Deref, RM: Deref, OM: Deref, CustomM: Deref> where
        /// A message handler which handles onion messages. This should generally be an
        /// [`OnionMessenger`], but can also be an [`IgnoringMessageHandler`].
        ///
-       /// [`OnionMessenger`]: crate::onion_message::OnionMessenger
+       /// [`OnionMessenger`]: crate::onion_message::messenger::OnionMessenger
        pub onion_message_handler: OM,
 
        /// A message handler which handles custom messages. The only LDK-provided implementation is
@@ -483,13 +513,13 @@ struct Peer {
        their_features: Option<InitFeatures>,
        their_socket_address: Option<SocketAddress>,
 
-       pending_outbound_buffer: LinkedList<Vec<u8>>,
+       pending_outbound_buffer: VecDeque<Vec<u8>>,
        pending_outbound_buffer_first_msg_offset: usize,
        /// Queue gossip broadcasts separately from `pending_outbound_buffer` so we can easily
        /// prioritize channel messages over them.
        ///
        /// Note that these messages are *not* encrypted/MAC'd, and are only serialized.
-       gossip_broadcast_buffer: LinkedList<Vec<u8>>,
+       gossip_broadcast_buffer: VecDeque<MessageBuf>,
        awaiting_write_event: bool,
 
        pending_read_buffer: Vec<u8>,
@@ -605,12 +635,13 @@ impl Peer {
 /// SimpleRefPeerManager is the more appropriate type. Defining these type aliases prevents
 /// issues such as overly long function definitions.
 ///
-/// This is not exported to bindings users as `Arc`s don't make sense in bindings.
+/// This is not exported to bindings users as type aliases aren't supported in most languages.
+#[cfg(not(c_bindings))]
 pub type SimpleArcPeerManager<SD, M, T, F, C, L> = PeerManager<
        SD,
        Arc<SimpleArcChannelManager<M, T, F, L>>,
        Arc<P2PGossipSync<Arc<NetworkGraph<Arc<L>>>, C, Arc<L>>>,
-       Arc<SimpleArcOnionMessenger<L>>,
+       Arc<SimpleArcOnionMessenger<M, T, F, L>>,
        Arc<L>,
        IgnoringMessageHandler,
        Arc<KeysManager>
@@ -623,14 +654,15 @@ pub type SimpleArcPeerManager<SD, M, T, F, C, L> = PeerManager<
 /// But if this is not necessary, using a reference is more efficient. Defining these type aliases
 /// helps with issues such as long function definitions.
 ///
-/// This is not exported to bindings users as general type aliases don't make sense in bindings.
+/// This is not exported to bindings users as type aliases aren't supported in most languages.
+#[cfg(not(c_bindings))]
 pub type SimpleRefPeerManager<
-       'a, 'b, 'c, 'd, 'e, 'f, 'logger, 'h, 'i, 'j, 'graph, SD, M, T, F, C, L
+       'a, 'b, 'c, 'd, 'e, 'f, 'logger, 'h, 'i, 'j, 'graph, 'k, SD, M, T, F, C, L
 > = PeerManager<
        SD,
        &'j SimpleRefChannelManager<'a, 'b, 'c, 'd, 'e, 'graph, 'logger, 'i, M, T, F, L>,
        &'f P2PGossipSync<&'graph NetworkGraph<&'logger L>, C, &'logger L>,
-       &'h SimpleRefOnionMessenger<'logger, 'i, 'j, L>,
+       &'h SimpleRefOnionMessenger<'a, 'b, 'c, 'd, 'e, 'graph, 'logger, 'i, 'j, 'k, M, T, F, L>,
        &'logger L,
        IgnoringMessageHandler,
        &'c KeysManager
@@ -660,6 +692,8 @@ pub trait APeerManager {
        type NS: Deref<Target=Self::NST>;
        /// Gets a reference to the underlying [`PeerManager`].
        fn as_ref(&self) -> &PeerManager<Self::Descriptor, Self::CM, Self::RM, Self::OM, Self::L, Self::CMH, Self::NS>;
+       /// Returns the peer manager's [`OnionMessageHandler`].
+       fn onion_message_handler(&self) -> &Self::OMT;
 }
 
 impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CMH: Deref, NS: Deref>
@@ -685,6 +719,9 @@ APeerManager for PeerManager<Descriptor, CM, RM, OM, L, CMH, NS> where
        type NST = <NS as Deref>::Target;
        type NS = NS;
        fn as_ref(&self) -> &PeerManager<Descriptor, CM, RM, OM, L, CMH, NS> { self }
+       fn onion_message_handler(&self) -> &Self::OMT {
+               self.message_handler.onion_message_handler.deref()
+       }
 }
 
 /// A PeerManager manages a set of peers, described by their [`SocketDescriptor`] and marshalls
@@ -777,7 +814,7 @@ impl From<LightningError> for MessageHandlingError {
 
 macro_rules! encode_msg {
        ($msg: expr) => {{
-               let mut buffer = VecWriter(Vec::new());
+               let mut buffer = VecWriter(Vec::with_capacity(MSG_BUF_ALLOC_SIZE));
                wire::write($msg, &mut buffer).unwrap();
                buffer.0
        }}
@@ -902,7 +939,7 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                ephemeral_key_midstate.input(ephemeral_random_data);
 
                let mut secp_ctx = Secp256k1::signing_only();
-               let ephemeral_hash = Sha256::from_engine(ephemeral_key_midstate.clone()).into_inner();
+               let ephemeral_hash = Sha256::from_engine(ephemeral_key_midstate.clone()).to_byte_array();
                secp_ctx.seeded_randomize(&ephemeral_hash);
 
                PeerManager {
@@ -946,7 +983,7 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                let mut ephemeral_hash = self.ephemeral_key_midstate.clone();
                let counter = self.peer_counter.get_increment();
                ephemeral_hash.input(&counter.to_le_bytes());
-               SecretKey::from_slice(&Sha256::from_engine(ephemeral_hash).into_inner()).expect("You broke SHA-256!")
+               SecretKey::from_slice(&Sha256::from_engine(ephemeral_hash).to_byte_array()).expect("You broke SHA-256!")
        }
 
        fn init_features(&self, their_node_id: &PublicKey) -> InitFeatures {
@@ -989,9 +1026,9 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                                        their_features: None,
                                        their_socket_address: remote_network_address,
 
-                                       pending_outbound_buffer: LinkedList::new(),
+                                       pending_outbound_buffer: VecDeque::new(),
                                        pending_outbound_buffer_first_msg_offset: 0,
-                                       gossip_broadcast_buffer: LinkedList::new(),
+                                       gossip_broadcast_buffer: VecDeque::new(),
                                        awaiting_write_event: false,
 
                                        pending_read_buffer,
@@ -1045,9 +1082,9 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                                        their_features: None,
                                        their_socket_address: remote_network_address,
 
-                                       pending_outbound_buffer: LinkedList::new(),
+                                       pending_outbound_buffer: VecDeque::new(),
                                        pending_outbound_buffer_first_msg_offset: 0,
-                                       gossip_broadcast_buffer: LinkedList::new(),
+                                       gossip_broadcast_buffer: VecDeque::new(),
                                        awaiting_write_event: false,
 
                                        pending_read_buffer,
@@ -1094,7 +1131,7 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                        }
                        if peer.should_buffer_gossip_broadcast() {
                                if let Some(msg) = peer.gossip_broadcast_buffer.pop_front() {
-                                       peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_buffer(&msg[..]));
+                                       peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_buffer(msg));
                                }
                        }
                        if peer.should_buffer_gossip_backfill() {
@@ -1160,6 +1197,13 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                        if peer.pending_outbound_buffer_first_msg_offset == next_buff.len() {
                                peer.pending_outbound_buffer_first_msg_offset = 0;
                                peer.pending_outbound_buffer.pop_front();
+                               const VEC_SIZE: usize = ::core::mem::size_of::<Vec<u8>>();
+                               let large_capacity = peer.pending_outbound_buffer.capacity() > 4096 / VEC_SIZE;
+                               let lots_of_slack = peer.pending_outbound_buffer.len()
+                                       < peer.pending_outbound_buffer.capacity() / 2;
+                               if large_capacity && lots_of_slack {
+                                       peer.pending_outbound_buffer.shrink_to_fit();
+                               }
                        } else {
                                peer.awaiting_write_event = true;
                        }
@@ -1226,18 +1270,20 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
 
        /// Append a message to a peer's pending outbound/write buffer
        fn enqueue_message<M: wire::Type>(&self, peer: &mut Peer, message: &M) {
+               let logger = WithContext::from(&self.logger, peer.their_node_id.map(|p| p.0), None);
                if is_gossip_msg(message.type_id()) {
-                       log_gossip!(self.logger, "Enqueueing message {:?} to {}", message, log_pubkey!(peer.their_node_id.unwrap().0));
+                       log_gossip!(logger, "Enqueueing message {:?} to {}", message, log_pubkey!(peer.their_node_id.unwrap().0));
                } else {
-                       log_trace!(self.logger, "Enqueueing message {:?} to {}", message, log_pubkey!(peer.their_node_id.unwrap().0))
+                       log_trace!(logger, "Enqueueing message {:?} to {}", message, log_pubkey!(peer.their_node_id.unwrap().0))
                }
                peer.msgs_sent_since_pong += 1;
                peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(message));
        }
 
        /// Append a message to a peer's pending outbound/write gossip broadcast buffer
-       fn enqueue_encoded_gossip_broadcast(&self, peer: &mut Peer, encoded_message: Vec<u8>) {
+       fn enqueue_encoded_gossip_broadcast(&self, peer: &mut Peer, encoded_message: MessageBuf) {
                peer.msgs_sent_since_pong += 1;
+               debug_assert!(peer.gossip_broadcast_buffer.len() <= OUTBOUND_BUFFER_LIMIT_DROP_GOSSIP);
                peer.gossip_broadcast_buffer.push_back(encoded_message);
        }
 
@@ -1257,8 +1303,10 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                                let mut read_pos = 0;
                                while read_pos < data.len() {
                                        macro_rules! try_potential_handleerror {
-                                               ($peer: expr, $thing: expr) => {
-                                                       match $thing {
+                                               ($peer: expr, $thing: expr) => {{
+                                                       let res = $thing;
+                                                       let logger = WithContext::from(&self.logger, peer_node_id.map(|(id, _)| id), None);
+                                                       match res {
                                                                Ok(x) => x,
                                                                Err(e) => {
                                                                        match e.action {
@@ -1268,7 +1316,7 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                                                                                        // re-entrant code and possibly unexpected behavior. The
                                                                                        // message send is optimistic anyway, and in this case
                                                                                        // we immediately disconnect the peer.
-                                                                                       log_debug!(self.logger, "Error handling message{}; disconnecting peer with: {}", OptionalFromDebugger(&peer_node_id), e.err);
+                                                                                       log_debug!(logger, "Error handling message{}; disconnecting peer with: {}", OptionalFromDebugger(&peer_node_id), e.err);
                                                                                        return Err(PeerHandleError { });
                                                                                },
                                                                                msgs::ErrorAction::DisconnectPeerWithWarning { .. } => {
@@ -1277,32 +1325,32 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                                                                                        // re-entrant code and possibly unexpected behavior. The
                                                                                        // message send is optimistic anyway, and in this case
                                                                                        // we immediately disconnect the peer.
-                                                                                       log_debug!(self.logger, "Error handling message{}; disconnecting peer with: {}", OptionalFromDebugger(&peer_node_id), e.err);
+                                                                                       log_debug!(logger, "Error handling message{}; disconnecting peer with: {}", OptionalFromDebugger(&peer_node_id), e.err);
                                                                                        return Err(PeerHandleError { });
                                                                                },
                                                                                msgs::ErrorAction::IgnoreAndLog(level) => {
-                                                                                       log_given_level!(self.logger, level, "Error handling message{}; ignoring: {}", OptionalFromDebugger(&peer_node_id), e.err);
+                                                                                       log_given_level!(logger, level, "Error handling message{}; ignoring: {}", OptionalFromDebugger(&peer_node_id), e.err);
                                                                                        continue
                                                                                },
                                                                                msgs::ErrorAction::IgnoreDuplicateGossip => continue, // Don't even bother logging these
                                                                                msgs::ErrorAction::IgnoreError => {
-                                                                                       log_debug!(self.logger, "Error handling message{}; ignoring: {}", OptionalFromDebugger(&peer_node_id), e.err);
+                                                                                       log_debug!(logger, "Error handling message{}; ignoring: {}", OptionalFromDebugger(&peer_node_id), e.err);
                                                                                        continue;
                                                                                },
                                                                                msgs::ErrorAction::SendErrorMessage { msg } => {
-                                                                                       log_debug!(self.logger, "Error handling message{}; sending error message with: {}", OptionalFromDebugger(&peer_node_id), e.err);
+                                                                                       log_debug!(logger, "Error handling message{}; sending error message with: {}", OptionalFromDebugger(&peer_node_id), e.err);
                                                                                        self.enqueue_message($peer, &msg);
                                                                                        continue;
                                                                                },
                                                                                msgs::ErrorAction::SendWarningMessage { msg, log_level } => {
-                                                                                       log_given_level!(self.logger, log_level, "Error handling message{}; sending warning message with: {}", OptionalFromDebugger(&peer_node_id), e.err);
+                                                                                       log_given_level!(logger, log_level, "Error handling message{}; sending warning message with: {}", OptionalFromDebugger(&peer_node_id), e.err);
                                                                                        self.enqueue_message($peer, &msg);
                                                                                        continue;
                                                                                },
                                                                        }
                                                                }
                                                        }
-                                               }
+                                               }}
                                        }
 
                                        let mut peer_lock = peer_mutex.lock().unwrap();
@@ -1327,9 +1375,10 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
 
                                                macro_rules! insert_node_id {
                                                        () => {
+                                                               let logger = WithContext::from(&self.logger, peer.their_node_id.map(|p| p.0), None);
                                                                match self.node_id_to_descriptor.lock().unwrap().entry(peer.their_node_id.unwrap().0) {
                                                                        hash_map::Entry::Occupied(e) => {
-                                                                               log_trace!(self.logger, "Got second connection with {}, closing", log_pubkey!(peer.their_node_id.unwrap().0));
+                                                                               log_trace!(logger, "Got second connection with {}, closing", log_pubkey!(peer.their_node_id.unwrap().0));
                                                                                peer.their_node_id = None; // Unset so that we don't generate a peer_disconnected event
                                                                                // Check that the peers map is consistent with the
                                                                                // node_id_to_descriptor map, as this has been broken
@@ -1338,7 +1387,7 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                                                                                return Err(PeerHandleError { })
                                                                        },
                                                                        hash_map::Entry::Vacant(entry) => {
-                                                                               log_debug!(self.logger, "Finished noise handshake for connection with {}", log_pubkey!(peer.their_node_id.unwrap().0));
+                                                                               log_debug!(logger, "Finished noise handshake for connection with {}", log_pubkey!(peer.their_node_id.unwrap().0));
                                                                                entry.insert(peer_descriptor.clone())
                                                                        },
                                                                };
@@ -1394,17 +1443,19 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                                                                        }
                                                                        peer.pending_read_is_header = false;
                                                                } else {
-                                                                       let msg_data = try_potential_handleerror!(peer,
-                                                                               peer.channel_encryptor.decrypt_message(&peer.pending_read_buffer[..]));
-                                                                       assert!(msg_data.len() >= 2);
+                                                                       debug_assert!(peer.pending_read_buffer.len() >= 2 + 16);
+                                                                       try_potential_handleerror!(peer,
+                                                                               peer.channel_encryptor.decrypt_message(&mut peer.pending_read_buffer[..]));
+
+                                                                       let mut reader = io::Cursor::new(&peer.pending_read_buffer[..peer.pending_read_buffer.len() - 16]);
+                                                                       let message_result = wire::read(&mut reader, &*self.message_handler.custom_message_handler);
 
                                                                        // Reset read buffer
                                                                        if peer.pending_read_buffer.capacity() > 8192 { peer.pending_read_buffer = Vec::new(); }
                                                                        peer.pending_read_buffer.resize(18, 0);
                                                                        peer.pending_read_is_header = true;
 
-                                                                       let mut reader = io::Cursor::new(&msg_data[..]);
-                                                                       let message_result = wire::read(&mut reader, &*self.message_handler.custom_message_handler);
+                                                                       let logger = WithContext::from(&self.logger, peer.their_node_id.map(|p| p.0), None);
                                                                        let message = match message_result {
                                                                                Ok(x) => x,
                                                                                Err(e) => {
@@ -1414,16 +1465,16 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                                                                                                // the messages enqueued here to not actually
                                                                                                // be sent before the peer is disconnected.
                                                                                                (msgs::DecodeError::UnknownRequiredFeature, Some(ty)) if is_gossip_msg(ty) => {
-                                                                                                       log_gossip!(self.logger, "Got a channel/node announcement with an unknown required feature flag, you may want to update!");
+                                                                                                       log_gossip!(logger, "Got a channel/node announcement with an unknown required feature flag, you may want to update!");
                                                                                                        continue;
                                                                                                }
                                                                                                (msgs::DecodeError::UnsupportedCompression, _) => {
-                                                                                                       log_gossip!(self.logger, "We don't support zlib-compressed message fields, sending a warning and ignoring message");
+                                                                                                       log_gossip!(logger, "We don't support zlib-compressed message fields, sending a warning and ignoring message");
                                                                                                        self.enqueue_message(peer, &msgs::WarningMessage { channel_id: ChannelId::new_zero(), data: "Unsupported message compression: zlib".to_owned() });
                                                                                                        continue;
                                                                                                }
                                                                                                (_, Some(ty)) if is_gossip_msg(ty) => {
-                                                                                                       log_gossip!(self.logger, "Got an invalid value while deserializing a gossip message");
+                                                                                                       log_gossip!(logger, "Got an invalid value while deserializing a gossip message");
                                                                                                        self.enqueue_message(peer, &msgs::WarningMessage {
                                                                                                                channel_id: ChannelId::new_zero(),
                                                                                                                data: format!("Unreadable/bogus gossip message of type {}", ty),
@@ -1431,16 +1482,16 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                                                                                                        continue;
                                                                                                }
                                                                                                (msgs::DecodeError::UnknownRequiredFeature, _) => {
-                                                                                                       log_debug!(self.logger, "Received a message with an unknown required feature flag or TLV, you may want to update!");
+                                                                                                       log_debug!(logger, "Received a message with an unknown required feature flag or TLV, you may want to update!");
                                                                                                        return Err(PeerHandleError { });
                                                                                                }
                                                                                                (msgs::DecodeError::UnknownVersion, _) => return Err(PeerHandleError { }),
                                                                                                (msgs::DecodeError::InvalidValue, _) => {
-                                                                                                       log_debug!(self.logger, "Got an invalid value while deserializing message");
+                                                                                                       log_debug!(logger, "Got an invalid value while deserializing message");
                                                                                                        return Err(PeerHandleError { });
                                                                                                }
                                                                                                (msgs::DecodeError::ShortRead, _) => {
-                                                                                                       log_debug!(self.logger, "Deserialization failed due to shortness of message");
+                                                                                                       log_debug!(logger, "Deserialization failed due to shortness of message");
                                                                                                        return Err(PeerHandleError { });
                                                                                                }
                                                                                                (msgs::DecodeError::BadLengthDescriptor, _) => return Err(PeerHandleError { }),
@@ -1490,6 +1541,7 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                message: wire::Message<<<CMH as core::ops::Deref>::Target as wire::CustomMessageReader>::CustomMessage>
        ) -> Result<Option<wire::Message<<<CMH as core::ops::Deref>::Target as wire::CustomMessageReader>::CustomMessage>>, MessageHandlingError> {
                let their_node_id = peer_lock.their_node_id.clone().expect("We know the peer's public key by the time we receive messages").0;
+               let logger = WithContext::from(&self.logger, Some(their_node_id), None);
                peer_lock.received_message_since_timer_tick = true;
 
                // Need an Init as first message
@@ -1507,7 +1559,7 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                                                }
                                        }
                                        if !have_compatible_chains {
-                                               log_debug!(self.logger, "Peer does not support any of our supported chains");
+                                               log_debug!(logger, "Peer does not support any of our supported chains");
                                                return Err(PeerHandleError { }.into());
                                        }
                                }
@@ -1515,12 +1567,12 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
 
                        let our_features = self.init_features(&their_node_id);
                        if msg.features.requires_unknown_bits_from(&our_features) {
-                               log_debug!(self.logger, "Peer requires features unknown to us");
+                               log_debug!(logger, "Peer requires features unknown to us");
                                return Err(PeerHandleError { }.into());
                        }
 
                        if our_features.requires_unknown_bits_from(&msg.features) {
-                               log_debug!(self.logger, "We require features unknown to our peer");
+                               log_debug!(logger, "We require features unknown to our peer");
                                return Err(PeerHandleError { }.into());
                        }
 
@@ -1528,7 +1580,7 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                                return Err(PeerHandleError { }.into());
                        }
 
-                       log_info!(self.logger, "Received peer Init message from {}: {}", log_pubkey!(their_node_id), msg.features);
+                       log_info!(logger, "Received peer Init message from {}: {}", log_pubkey!(their_node_id), msg.features);
 
                        // For peers not supporting gossip queries start sync now, otherwise wait until we receive a filter.
                        if msg.features.initial_routing_sync() && !msg.features.supports_gossip_queries() {
@@ -1536,27 +1588,27 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                        }
 
                        if let Err(()) = self.message_handler.route_handler.peer_connected(&their_node_id, &msg, peer_lock.inbound_connection) {
-                               log_debug!(self.logger, "Route Handler decided we couldn't communicate with peer {}", log_pubkey!(their_node_id));
+                               log_debug!(logger, "Route Handler decided we couldn't communicate with peer {}", log_pubkey!(their_node_id));
                                return Err(PeerHandleError { }.into());
                        }
                        if let Err(()) = self.message_handler.chan_handler.peer_connected(&their_node_id, &msg, peer_lock.inbound_connection) {
-                               log_debug!(self.logger, "Channel Handler decided we couldn't communicate with peer {}", log_pubkey!(their_node_id));
+                               log_debug!(logger, "Channel Handler decided we couldn't communicate with peer {}", log_pubkey!(their_node_id));
                                return Err(PeerHandleError { }.into());
                        }
                        if let Err(()) = self.message_handler.onion_message_handler.peer_connected(&their_node_id, &msg, peer_lock.inbound_connection) {
-                               log_debug!(self.logger, "Onion Message Handler decided we couldn't communicate with peer {}", log_pubkey!(their_node_id));
+                               log_debug!(logger, "Onion Message Handler decided we couldn't communicate with peer {}", log_pubkey!(their_node_id));
                                return Err(PeerHandleError { }.into());
                        }
 
                        peer_lock.their_features = Some(msg.features);
                        return Ok(None);
                } else if peer_lock.their_features.is_none() {
-                       log_debug!(self.logger, "Peer {} sent non-Init first message", log_pubkey!(their_node_id));
+                       log_debug!(logger, "Peer {} sent non-Init first message", log_pubkey!(their_node_id));
                        return Err(PeerHandleError { }.into());
                }
 
                if let wire::Message::GossipTimestampFilter(_msg) = message {
-                       // When supporting gossip messages, start inital gossip sync only after we receive
+                       // When supporting gossip messages, start initial gossip sync only after we receive
                        // a GossipTimestampFilter
                        if peer_lock.their_features.as_ref().unwrap().supports_gossip_queries() &&
                                !peer_lock.sent_gossip_timestamp_filter {
@@ -1573,9 +1625,9 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                mem::drop(peer_lock);
 
                if is_gossip_msg(message.type_id()) {
-                       log_gossip!(self.logger, "Received message {:?} from {}", message, log_pubkey!(their_node_id));
+                       log_gossip!(logger, "Received message {:?} from {}", message, log_pubkey!(their_node_id));
                } else {
-                       log_trace!(self.logger, "Received message {:?} from {}", message, log_pubkey!(their_node_id));
+                       log_trace!(logger, "Received message {:?} from {}", message, log_pubkey!(their_node_id));
                }
 
                let mut should_forward = None;
@@ -1589,14 +1641,14 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                                // Handled above
                        },
                        wire::Message::Error(msg) => {
-                               log_debug!(self.logger, "Got Err message from {}: {}", log_pubkey!(their_node_id), PrintableString(&msg.data));
+                               log_debug!(logger, "Got Err message from {}: {}", log_pubkey!(their_node_id), PrintableString(&msg.data));
                                self.message_handler.chan_handler.handle_error(&their_node_id, &msg);
                                if msg.channel_id.is_zero() {
                                        return Err(PeerHandleError { }.into());
                                }
                        },
                        wire::Message::Warning(msg) => {
-                               log_debug!(self.logger, "Got warning message from {}: {}", log_pubkey!(their_node_id), PrintableString(&msg.data));
+                               log_debug!(logger, "Got warning message from {}: {}", log_pubkey!(their_node_id), PrintableString(&msg.data));
                        },
 
                        wire::Message::Ping(msg) => {
@@ -1635,6 +1687,22 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                                self.message_handler.chan_handler.handle_channel_ready(&their_node_id, &msg);
                        },
 
+                       // Quiescence messages:
+                       wire::Message::Stfu(msg) => {
+                               self.message_handler.chan_handler.handle_stfu(&their_node_id, &msg);
+                       }
+
+                       // Splicing messages:
+                       wire::Message::Splice(msg) => {
+                               self.message_handler.chan_handler.handle_splice(&their_node_id, &msg);
+                       }
+                       wire::Message::SpliceAck(msg) => {
+                               self.message_handler.chan_handler.handle_splice_ack(&their_node_id, &msg);
+                       }
+                       wire::Message::SpliceLocked(msg) => {
+                               self.message_handler.chan_handler.handle_splice_locked(&their_node_id, &msg);
+                       }
+
                        // Interactive transaction construction messages:
                        wire::Message::TxAddInput(msg) => {
                                self.message_handler.chan_handler.handle_tx_add_input(&their_node_id, &msg);
@@ -1744,11 +1812,11 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
 
                        // Unknown messages:
                        wire::Message::Unknown(type_id) if message.is_even() => {
-                               log_debug!(self.logger, "Received unknown even message of type {}, disconnecting peer!", type_id);
+                               log_debug!(logger, "Received unknown even message of type {}, disconnecting peer!", type_id);
                                return Err(PeerHandleError { }.into());
                        },
                        wire::Message::Unknown(type_id) => {
-                               log_trace!(self.logger, "Received unknown odd message of type {}, ignoring", type_id);
+                               log_trace!(logger, "Received unknown odd message of type {}, ignoring", type_id);
                        },
                        wire::Message::Custom(custom) => {
                                self.message_handler.custom_message_handler.handle_custom_message(custom, &their_node_id)?;
@@ -1771,8 +1839,9 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                                        }
                                        debug_assert!(peer.their_node_id.is_some());
                                        debug_assert!(peer.channel_encryptor.is_ready_for_encryption());
+                                       let logger = WithContext::from(&self.logger, peer.their_node_id.map(|p| p.0), None);
                                        if peer.buffer_full_drop_gossip_broadcast() {
-                                               log_gossip!(self.logger, "Skipping broadcast message to {:?} as its outbound buffer is full", peer.their_node_id);
+                                               log_gossip!(logger, "Skipping broadcast message to {:?} as its outbound buffer is full", peer.their_node_id);
                                                continue;
                                        }
                                        if let Some((_, their_node_id)) = peer.their_node_id {
@@ -1783,7 +1852,7 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                                        if except_node.is_some() && peer.their_node_id.as_ref().map(|(pk, _)| pk) == except_node {
                                                continue;
                                        }
-                                       self.enqueue_encoded_gossip_broadcast(&mut *peer, encoded_msg.clone());
+                                       self.enqueue_encoded_gossip_broadcast(&mut *peer, MessageBuf::from_encoded(&encoded_msg));
                                }
                        },
                        wire::Message::NodeAnnouncement(ref msg) => {
@@ -1798,8 +1867,9 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                                        }
                                        debug_assert!(peer.their_node_id.is_some());
                                        debug_assert!(peer.channel_encryptor.is_ready_for_encryption());
+                                       let logger = WithContext::from(&self.logger, peer.their_node_id.map(|p| p.0), None);
                                        if peer.buffer_full_drop_gossip_broadcast() {
-                                               log_gossip!(self.logger, "Skipping broadcast message to {:?} as its outbound buffer is full", peer.their_node_id);
+                                               log_gossip!(logger, "Skipping broadcast message to {:?} as its outbound buffer is full", peer.their_node_id);
                                                continue;
                                        }
                                        if let Some((_, their_node_id)) = peer.their_node_id {
@@ -1810,7 +1880,7 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                                        if except_node.is_some() && peer.their_node_id.as_ref().map(|(pk, _)| pk) == except_node {
                                                continue;
                                        }
-                                       self.enqueue_encoded_gossip_broadcast(&mut *peer, encoded_msg.clone());
+                                       self.enqueue_encoded_gossip_broadcast(&mut *peer, MessageBuf::from_encoded(&encoded_msg));
                                }
                        },
                        wire::Message::ChannelUpdate(ref msg) => {
@@ -1825,14 +1895,15 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                                        }
                                        debug_assert!(peer.their_node_id.is_some());
                                        debug_assert!(peer.channel_encryptor.is_ready_for_encryption());
+                                       let logger = WithContext::from(&self.logger, peer.their_node_id.map(|p| p.0), None);
                                        if peer.buffer_full_drop_gossip_broadcast() {
-                                               log_gossip!(self.logger, "Skipping broadcast message to {:?} as its outbound buffer is full", peer.their_node_id);
+                                               log_gossip!(logger, "Skipping broadcast message to {:?} as its outbound buffer is full", peer.their_node_id);
                                                continue;
                                        }
                                        if except_node.is_some() && peer.their_node_id.as_ref().map(|(pk, _)| pk) == except_node {
                                                continue;
                                        }
-                                       self.enqueue_encoded_gossip_broadcast(&mut *peer, encoded_msg.clone());
+                                       self.enqueue_encoded_gossip_broadcast(&mut *peer, MessageBuf::from_encoded(&encoded_msg));
                                }
                        },
                        _ => debug_assert!(false, "We shouldn't attempt to forward anything but gossip messages"),
@@ -1908,112 +1979,140 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                                for event in events_generated.drain(..) {
                                        match event {
                                                MessageSendEvent::SendAcceptChannel { ref node_id, ref msg } => {
-                                                       log_debug!(self.logger, "Handling SendAcceptChannel event in peer_handler for node {} for channel {}",
+                                                       log_debug!(WithContext::from(&self.logger, Some(*node_id), Some(msg.temporary_channel_id)), "Handling SendAcceptChannel event in peer_handler for node {} for channel {}",
                                                                        log_pubkey!(node_id),
                                                                        &msg.temporary_channel_id);
                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
                                                },
                                                MessageSendEvent::SendAcceptChannelV2 { ref node_id, ref msg } => {
-                                                       log_debug!(self.logger, "Handling SendAcceptChannelV2 event in peer_handler for node {} for channel {}",
+                                                       log_debug!(WithContext::from(&self.logger, Some(*node_id), Some(msg.temporary_channel_id)), "Handling SendAcceptChannelV2 event in peer_handler for node {} for channel {}",
                                                                        log_pubkey!(node_id),
                                                                        &msg.temporary_channel_id);
                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
                                                },
                                                MessageSendEvent::SendOpenChannel { ref node_id, ref msg } => {
-                                                       log_debug!(self.logger, "Handling SendOpenChannel event in peer_handler for node {} for channel {}",
+                                                       log_debug!(WithContext::from(&self.logger, Some(*node_id), Some(msg.common_fields.temporary_channel_id)), "Handling SendOpenChannel event in peer_handler for node {} for channel {}",
                                                                        log_pubkey!(node_id),
-                                                                       &msg.temporary_channel_id);
+                                                                       &msg.common_fields.temporary_channel_id);
                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
                                                },
                                                MessageSendEvent::SendOpenChannelV2 { ref node_id, ref msg } => {
-                                                       log_debug!(self.logger, "Handling SendOpenChannelV2 event in peer_handler for node {} for channel {}",
+                                                       log_debug!(WithContext::from(&self.logger, Some(*node_id), Some(msg.common_fields.temporary_channel_id)), "Handling SendOpenChannelV2 event in peer_handler for node {} for channel {}",
                                                                        log_pubkey!(node_id),
-                                                                       &msg.temporary_channel_id);
+                                                                       &msg.common_fields.temporary_channel_id);
                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
                                                },
                                                MessageSendEvent::SendFundingCreated { ref node_id, ref msg } => {
-                                                       log_debug!(self.logger, "Handling SendFundingCreated event in peer_handler for node {} for channel {} (which becomes {})",
+                                                       log_debug!(WithContext::from(&self.logger, Some(*node_id), Some(msg.temporary_channel_id)), "Handling SendFundingCreated event in peer_handler for node {} for channel {} (which becomes {})",
                                                                        log_pubkey!(node_id),
                                                                        &msg.temporary_channel_id,
-                                                                       log_funding_channel_id!(msg.funding_txid, msg.funding_output_index));
+                                                                       ChannelId::v1_from_funding_txid(msg.funding_txid.as_byte_array(), msg.funding_output_index));
                                                        // TODO: If the peer is gone we should generate a DiscardFunding event
                                                        // indicating to the wallet that they should just throw away this funding transaction
                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
                                                },
                                                MessageSendEvent::SendFundingSigned { ref node_id, ref msg } => {
-                                                       log_debug!(self.logger, "Handling SendFundingSigned event in peer_handler for node {} for channel {}",
+                                                       log_debug!(WithContext::from(&self.logger, Some(*node_id), Some(msg.channel_id)), "Handling SendFundingSigned event in peer_handler for node {} for channel {}",
                                                                        log_pubkey!(node_id),
                                                                        &msg.channel_id);
                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
                                                },
                                                MessageSendEvent::SendChannelReady { ref node_id, ref msg } => {
-                                                       log_debug!(self.logger, "Handling SendChannelReady event in peer_handler for node {} for channel {}",
+                                                       log_debug!(WithContext::from(&self.logger, Some(*node_id), Some(msg.channel_id)), "Handling SendChannelReady event in peer_handler for node {} for channel {}",
                                                                        log_pubkey!(node_id),
                                                                        &msg.channel_id);
                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
                                                },
+                                               MessageSendEvent::SendStfu { ref node_id, ref msg} => {
+                                                       let logger = WithContext::from(&self.logger, Some(*node_id), Some(msg.channel_id));
+                                                       log_debug!(logger, "Handling SendStfu event in peer_handler for node {} for channel {}",
+                                                                       log_pubkey!(node_id),
+                                                                       &msg.channel_id);
+                                                       self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
+                                               }
+                                               MessageSendEvent::SendSplice { ref node_id, ref msg} => {
+                                                       let logger = WithContext::from(&self.logger, Some(*node_id), Some(msg.channel_id));
+                                                       log_debug!(logger, "Handling SendSplice event in peer_handler for node {} for channel {}",
+                                                                       log_pubkey!(node_id),
+                                                                       &msg.channel_id);
+                                                       self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
+                                               }
+                                               MessageSendEvent::SendSpliceAck { ref node_id, ref msg} => {
+                                                       let logger = WithContext::from(&self.logger, Some(*node_id), Some(msg.channel_id));
+                                                       log_debug!(logger, "Handling SendSpliceAck event in peer_handler for node {} for channel {}",
+                                                                       log_pubkey!(node_id),
+                                                                       &msg.channel_id);
+                                                       self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
+                                               }
+                                               MessageSendEvent::SendSpliceLocked { ref node_id, ref msg} => {
+                                                       let logger = WithContext::from(&self.logger, Some(*node_id), Some(msg.channel_id));
+                                                       log_debug!(logger, "Handling SendSpliceLocked event in peer_handler for node {} for channel {}",
+                                                                       log_pubkey!(node_id),
+                                                                       &msg.channel_id);
+                                                       self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
+                                               }
                                                MessageSendEvent::SendTxAddInput { ref node_id, ref msg } => {
-                                                       log_debug!(self.logger, "Handling SendTxAddInput event in peer_handler for node {} for channel {}",
+                                                       log_debug!(WithContext::from(&self.logger, Some(*node_id), Some(msg.channel_id)), "Handling SendTxAddInput event in peer_handler for node {} for channel {}",
                                                                        log_pubkey!(node_id),
                                                                        &msg.channel_id);
                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
                                                },
                                                MessageSendEvent::SendTxAddOutput { ref node_id, ref msg } => {
-                                                       log_debug!(self.logger, "Handling SendTxAddOutput event in peer_handler for node {} for channel {}",
+                                                       log_debug!(WithContext::from(&self.logger, Some(*node_id), Some(msg.channel_id)), "Handling SendTxAddOutput event in peer_handler for node {} for channel {}",
                                                                        log_pubkey!(node_id),
                                                                        &msg.channel_id);
                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
                                                },
                                                MessageSendEvent::SendTxRemoveInput { ref node_id, ref msg } => {
-                                                       log_debug!(self.logger, "Handling SendTxRemoveInput event in peer_handler for node {} for channel {}",
+                                                       log_debug!(WithContext::from(&self.logger, Some(*node_id), Some(msg.channel_id)), "Handling SendTxRemoveInput event in peer_handler for node {} for channel {}",
                                                                        log_pubkey!(node_id),
                                                                        &msg.channel_id);
                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
                                                },
                                                MessageSendEvent::SendTxRemoveOutput { ref node_id, ref msg } => {
-                                                       log_debug!(self.logger, "Handling SendTxRemoveOutput event in peer_handler for node {} for channel {}",
+                                                       log_debug!(WithContext::from(&self.logger, Some(*node_id), Some(msg.channel_id)), "Handling SendTxRemoveOutput event in peer_handler for node {} for channel {}",
                                                                        log_pubkey!(node_id),
                                                                        &msg.channel_id);
                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
                                                },
                                                MessageSendEvent::SendTxComplete { ref node_id, ref msg } => {
-                                                       log_debug!(self.logger, "Handling SendTxComplete event in peer_handler for node {} for channel {}",
+                                                       log_debug!(WithContext::from(&self.logger, Some(*node_id), Some(msg.channel_id)), "Handling SendTxComplete event in peer_handler for node {} for channel {}",
                                                                        log_pubkey!(node_id),
                                                                        &msg.channel_id);
                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
                                                },
                                                MessageSendEvent::SendTxSignatures { ref node_id, ref msg } => {
-                                                       log_debug!(self.logger, "Handling SendTxSignatures event in peer_handler for node {} for channel {}",
+                                                       log_debug!(WithContext::from(&self.logger, Some(*node_id), Some(msg.channel_id)), "Handling SendTxSignatures event in peer_handler for node {} for channel {}",
                                                                        log_pubkey!(node_id),
                                                                        &msg.channel_id);
                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
                                                },
                                                MessageSendEvent::SendTxInitRbf { ref node_id, ref msg } => {
-                                                       log_debug!(self.logger, "Handling SendTxInitRbf event in peer_handler for node {} for channel {}",
+                                                       log_debug!(WithContext::from(&self.logger, Some(*node_id), Some(msg.channel_id)), "Handling SendTxInitRbf event in peer_handler for node {} for channel {}",
                                                                        log_pubkey!(node_id),
                                                                        &msg.channel_id);
                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
                                                },
                                                MessageSendEvent::SendTxAckRbf { ref node_id, ref msg } => {
-                                                       log_debug!(self.logger, "Handling SendTxAckRbf event in peer_handler for node {} for channel {}",
+                                                       log_debug!(WithContext::from(&self.logger, Some(*node_id), Some(msg.channel_id)), "Handling SendTxAckRbf event in peer_handler for node {} for channel {}",
                                                                        log_pubkey!(node_id),
                                                                        &msg.channel_id);
                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
                                                },
                                                MessageSendEvent::SendTxAbort { ref node_id, ref msg } => {
-                                                       log_debug!(self.logger, "Handling SendTxAbort event in peer_handler for node {} for channel {}",
+                                                       log_debug!(WithContext::from(&self.logger, Some(*node_id), Some(msg.channel_id)), "Handling SendTxAbort event in peer_handler for node {} for channel {}",
                                                                        log_pubkey!(node_id),
                                                                        &msg.channel_id);
                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
                                                },
                                                MessageSendEvent::SendAnnouncementSignatures { ref node_id, ref msg } => {
-                                                       log_debug!(self.logger, "Handling SendAnnouncementSignatures event in peer_handler for node {} for channel {})",
+                                                       log_debug!(WithContext::from(&self.logger, Some(*node_id), Some(msg.channel_id)), "Handling SendAnnouncementSignatures event in peer_handler for node {} for channel {})",
                                                                        log_pubkey!(node_id),
                                                                        &msg.channel_id);
                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
                                                },
                                                MessageSendEvent::UpdateHTLCs { ref 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 } } => {
-                                                       log_debug!(self.logger, "Handling UpdateHTLCs event in peer_handler for node {} with {} adds, {} fulfills, {} fails for channel {}",
+                                                       log_debug!(WithContext::from(&self.logger, Some(*node_id), Some(commitment_signed.channel_id)), "Handling UpdateHTLCs event in peer_handler for node {} with {} adds, {} fulfills, {} fails for channel {}",
                                                                        log_pubkey!(node_id),
                                                                        update_add_htlcs.len(),
                                                                        update_fulfill_htlcs.len(),
@@ -2038,31 +2137,31 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                                                        self.enqueue_message(&mut *peer, commitment_signed);
                                                },
                                                MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => {
-                                                       log_debug!(self.logger, "Handling SendRevokeAndACK event in peer_handler for node {} for channel {}",
+                                                       log_debug!(WithContext::from(&self.logger, Some(*node_id), Some(msg.channel_id)), "Handling SendRevokeAndACK event in peer_handler for node {} for channel {}",
                                                                        log_pubkey!(node_id),
                                                                        &msg.channel_id);
                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
                                                },
                                                MessageSendEvent::SendClosingSigned { ref node_id, ref msg } => {
-                                                       log_debug!(self.logger, "Handling SendClosingSigned event in peer_handler for node {} for channel {}",
+                                                       log_debug!(WithContext::from(&self.logger, Some(*node_id), Some(msg.channel_id)), "Handling SendClosingSigned event in peer_handler for node {} for channel {}",
                                                                        log_pubkey!(node_id),
                                                                        &msg.channel_id);
                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
                                                },
                                                MessageSendEvent::SendShutdown { ref node_id, ref msg } => {
-                                                       log_debug!(self.logger, "Handling Shutdown event in peer_handler for node {} for channel {}",
+                                                       log_debug!(WithContext::from(&self.logger, Some(*node_id), Some(msg.channel_id)), "Handling Shutdown event in peer_handler for node {} for channel {}",
                                                                        log_pubkey!(node_id),
                                                                        &msg.channel_id);
                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
                                                },
                                                MessageSendEvent::SendChannelReestablish { ref node_id, ref msg } => {
-                                                       log_debug!(self.logger, "Handling SendChannelReestablish event in peer_handler for node {} for channel {}",
+                                                       log_debug!(WithContext::from(&self.logger, Some(*node_id), Some(msg.channel_id)), "Handling SendChannelReestablish event in peer_handler for node {} for channel {}",
                                                                        log_pubkey!(node_id),
                                                                        &msg.channel_id);
                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
                                                },
                                                MessageSendEvent::SendChannelAnnouncement { ref node_id, ref msg, ref update_msg } => {
-                                                       log_debug!(self.logger, "Handling SendChannelAnnouncement event in peer_handler for node {} for short channel id {}",
+                                                       log_debug!(WithContext::from(&self.logger, Some(*node_id), None), "Handling SendChannelAnnouncement event in peer_handler for node {} for short channel id {}",
                                                                        log_pubkey!(node_id),
                                                                        msg.contents.short_channel_id);
                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
@@ -2100,49 +2199,50 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                                                        }
                                                },
                                                MessageSendEvent::SendChannelUpdate { ref node_id, ref msg } => {
-                                                       log_trace!(self.logger, "Handling SendChannelUpdate event in peer_handler for node {} for channel {}",
+                                                       log_trace!(WithContext::from(&self.logger, Some(*node_id), None), "Handling SendChannelUpdate event in peer_handler for node {} for channel {}",
                                                                        log_pubkey!(node_id), msg.contents.short_channel_id);
                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
                                                },
                                                MessageSendEvent::HandleError { node_id, action } => {
+                                                       let logger = WithContext::from(&self.logger, Some(node_id), None);
                                                        match action {
                                                                msgs::ErrorAction::DisconnectPeer { msg } => {
                                                                        if let Some(msg) = msg.as_ref() {
-                                                                               log_trace!(self.logger, "Handling DisconnectPeer HandleError event in peer_handler for node {} with message {}",
+                                                                               log_trace!(logger, "Handling DisconnectPeer HandleError event in peer_handler for node {} with message {}",
                                                                                        log_pubkey!(node_id), msg.data);
                                                                        } else {
-                                                                               log_trace!(self.logger, "Handling DisconnectPeer HandleError event in peer_handler for node {}",
+                                                                               log_trace!(logger, "Handling DisconnectPeer HandleError event in peer_handler for node {}",
                                                                                        log_pubkey!(node_id));
                                                                        }
                                                                        // We do not have the peers write lock, so we just store that we're
-                                                                       // about to disconenct the peer and do it after we finish
+                                                                       // about to disconnect the peer and do it after we finish
                                                                        // processing most messages.
                                                                        let msg = msg.map(|msg| wire::Message::<<<CMH as core::ops::Deref>::Target as wire::CustomMessageReader>::CustomMessage>::Error(msg));
                                                                        peers_to_disconnect.insert(node_id, msg);
                                                                },
                                                                msgs::ErrorAction::DisconnectPeerWithWarning { msg } => {
-                                                                       log_trace!(self.logger, "Handling DisconnectPeer HandleError event in peer_handler for node {} with message {}",
+                                                                       log_trace!(logger, "Handling DisconnectPeer HandleError event in peer_handler for node {} with message {}",
                                                                                log_pubkey!(node_id), msg.data);
                                                                        // We do not have the peers write lock, so we just store that we're
-                                                                       // about to disconenct the peer and do it after we finish
+                                                                       // about to disconnect the peer and do it after we finish
                                                                        // processing most messages.
                                                                        peers_to_disconnect.insert(node_id, Some(wire::Message::Warning(msg)));
                                                                },
                                                                msgs::ErrorAction::IgnoreAndLog(level) => {
-                                                                       log_given_level!(self.logger, level, "Received a HandleError event to be ignored for node {}", log_pubkey!(node_id));
+                                                                       log_given_level!(logger, level, "Received a HandleError event to be ignored for node {}", log_pubkey!(node_id));
                                                                },
                                                                msgs::ErrorAction::IgnoreDuplicateGossip => {},
                                                                msgs::ErrorAction::IgnoreError => {
-                                                                               log_debug!(self.logger, "Received a HandleError event to be ignored for node {}", log_pubkey!(node_id));
+                                                                               log_debug!(logger, "Received a HandleError event to be ignored for node {}", log_pubkey!(node_id));
                                                                        },
                                                                msgs::ErrorAction::SendErrorMessage { ref msg } => {
-                                                                       log_trace!(self.logger, "Handling SendErrorMessage HandleError event in peer_handler for node {} with message {}",
+                                                                       log_trace!(logger, "Handling SendErrorMessage HandleError event in peer_handler for node {} with message {}",
                                                                                        log_pubkey!(node_id),
                                                                                        msg.data);
                                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(&node_id), msg);
                                                                },
                                                                msgs::ErrorAction::SendWarningMessage { ref msg, ref log_level } => {
-                                                                       log_given_level!(self.logger, *log_level, "Handling SendWarningMessage HandleError event in peer_handler for node {} with message {}",
+                                                                       log_given_level!(logger, *log_level, "Handling SendWarningMessage HandleError event in peer_handler for node {} with message {}",
                                                                                        log_pubkey!(node_id),
                                                                                        msg.data);
                                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(&node_id), msg);
@@ -2156,7 +2256,7 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                                                        self.enqueue_message(&mut *get_peer_for_forwarding!(node_id), msg);
                                                }
                                                MessageSendEvent::SendReplyChannelRange { ref node_id, ref msg } => {
-                                                       log_gossip!(self.logger, "Handling SendReplyChannelRange event in peer_handler for node {} with num_scids={} first_blocknum={} number_of_blocks={}, sync_complete={}",
+                                                       log_gossip!(WithContext::from(&self.logger, Some(*node_id), None), "Handling SendReplyChannelRange event in peer_handler for node {} with num_scids={} first_blocknum={} number_of_blocks={}, sync_complete={}",
                                                                log_pubkey!(node_id),
                                                                msg.short_channel_ids.len(),
                                                                msg.first_blocknum,
@@ -2230,7 +2330,7 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
 
                debug_assert!(peer.their_node_id.is_some());
                if let Some((node_id, _)) = peer.their_node_id {
-                       log_trace!(self.logger, "Disconnecting peer with id {} due to {}", node_id, reason);
+                       log_trace!(WithContext::from(&self.logger, Some(node_id), None), "Disconnecting peer with id {} due to {}", node_id, reason);
                        self.message_handler.chan_handler.peer_disconnected(&node_id);
                        self.message_handler.onion_message_handler.peer_disconnected(&node_id);
                }
@@ -2249,7 +2349,7 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
                        Some(peer_lock) => {
                                let peer = peer_lock.lock().unwrap();
                                if let Some((node_id, _)) = peer.their_node_id {
-                                       log_trace!(self.logger, "Handling disconnection of peer {}", log_pubkey!(node_id));
+                                       log_trace!(WithContext::from(&self.logger, Some(node_id), None), "Handling disconnection of peer {}", log_pubkey!(node_id));
                                        let removed = self.node_id_to_descriptor.lock().unwrap().remove(&node_id);
                                        debug_assert!(removed.is_some(), "descriptor maps should be consistent");
                                        if !peer.handshake_complete() { return; }
@@ -2396,7 +2496,6 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
        // broadcast_node_announcement panics) of the maximum-length addresses would fit in a 64KB
        // message...
        const HALF_MESSAGE_IS_ADDRS: u32 = ::core::u16::MAX as u32 / (SocketAddress::MAX_LEN as u32 + 1) / 2;
-       #[deny(const_err)]
        #[allow(dead_code)]
        // ...by failing to compile if the number of addresses that would be half of a message is
        // smaller than 100:
@@ -2607,7 +2706,7 @@ mod tests {
                for i in 0..peer_count {
                        let node_secret = SecretKey::from_slice(&[42 + i as u8; 32]).unwrap();
                        let features = InitFeatures::from_le_bytes(vec![0u8; 33]);
-                       let network = ChainHash::from(&[i as u8; 32][..]);
+                       let network = ChainHash::from(&[i as u8; 32]);
                        cfgs.push(
                                PeerManagerCfg{
                                        chan_handler: test_utils::TestChannelMessageHandler::new(network),
@@ -2720,7 +2819,7 @@ mod tests {
                                                                node_id: peers[1].node_signer.get_node_id(Recipient::Node).unwrap(),
                                                                msg: msgs::Shutdown {
                                                                        channel_id: ChannelId::new_zero(),
-                                                                       scriptpubkey: bitcoin::Script::new(),
+                                                                       scriptpubkey: bitcoin::ScriptBuf::new(),
                                                                },
                                                        });
                                                cfgs[1].chan_handler.pending_events.lock().unwrap()
@@ -2728,7 +2827,7 @@ mod tests {
                                                                node_id: peers[0].node_signer.get_node_id(Recipient::Node).unwrap(),
                                                                msg: msgs::Shutdown {
                                                                        channel_id: ChannelId::new_zero(),
-                                                                       scriptpubkey: bitcoin::Script::new(),
+                                                                       scriptpubkey: bitcoin::ScriptBuf::new(),
                                                                },
                                                        });
 
@@ -2856,7 +2955,7 @@ mod tests {
 
                let their_id = peers[1].node_signer.get_node_id(Recipient::Node).unwrap();
 
-               let msg = msgs::Shutdown { channel_id: ChannelId::from_bytes([42; 32]), scriptpubkey: bitcoin::Script::new() };
+               let msg = msgs::Shutdown { channel_id: ChannelId::from_bytes([42; 32]), scriptpubkey: bitcoin::ScriptBuf::new() };
                a_chan_handler.pending_events.lock().unwrap().push(events::MessageSendEvent::SendShutdown {
                        node_id: their_id, msg: msg.clone()
                });