X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning%2Fsrc%2Fln%2Fpeer_handler.rs;h=9c27a23467ce7a8e7134225f352fc961a3998ace;hb=113b0f1a0eb503181ed5d5b4d07f0ef83ab30770;hp=19f505b2c0d3c95f26c49c5e0d3c0fa925ad1ca2;hpb=712d97d3fe313ab5d94b191528c72d005a19d80b;p=rust-lightning

diff --git a/lightning/src/ln/peer_handler.rs b/lightning/src/ln/peer_handler.rs
index 19f505b2..9c27a234 100644
--- a/lightning/src/ln/peer_handler.rs
+++ b/lightning/src/ln/peer_handler.rs
@@ -36,9 +36,10 @@ use crate::util::atomic_counter::AtomicCounter;
 use crate::util::logger::{Level, Logger, WithContext};
 use crate::util::string::PrintableString;
 
+#[allow(unused_imports)]
 use crate::prelude::*;
+
 use crate::io;
-use alloc::collections::VecDeque;
 use crate::sync::{Mutex, MutexGuard, FairRwLock};
 use core::sync::atomic::{AtomicBool, AtomicU32, AtomicI32, Ordering};
 use core::{cmp, hash, fmt, mem};
@@ -116,7 +117,9 @@ impl RoutingMessageHandler for IgnoringMessageHandler {
 	fn handle_query_short_channel_ids(&self, _their_node_id: &PublicKey, _msg: msgs::QueryShortChannelIds) -> Result<(), LightningError> { Ok(()) }
 	fn provided_node_features(&self) -> NodeFeatures { NodeFeatures::empty() }
 	fn provided_init_features(&self, _their_node_id: &PublicKey) -> InitFeatures {
-		InitFeatures::empty()
+		let mut features = InitFeatures::empty();
+		features.set_gossip_queries_optional();
+		features
 	}
 	fn processing_queue_high(&self) -> bool { false }
 }
@@ -1589,15 +1592,37 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
 	}
 
 	/// Process an incoming message and return a decision (ok, lightning error, peer handling error) regarding the next action with the peer
+	///
 	/// Returns the message back if it needs to be broadcasted to all other peers.
 	fn handle_message(
 		&self,
 		peer_mutex: &Mutex<Peer>,
-		mut peer_lock: MutexGuard<Peer>,
-		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> {
+		peer_lock: MutexGuard<Peer>,
+		message: wire::Message<<<CMH as Deref>::Target as wire::CustomMessageReader>::CustomMessage>
+	) -> Result<Option<wire::Message<<<CMH as 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);
+
+		let message = match self.do_handle_message_holding_peer_lock(peer_lock, message, &their_node_id, &logger)? {
+			Some(processed_message) => processed_message,
+			None => return Ok(None),
+		};
+
+		self.do_handle_message_without_peer_lock(peer_mutex, message, &their_node_id, &logger)
+	}
+
+	// Conducts all message processing that requires us to hold the `peer_lock`.
+	//
+	// Returns `None` if the message was fully processed and otherwise returns the message back to
+	// allow it to be subsequently processed by `do_handle_message_without_peer_lock`.
+	fn do_handle_message_holding_peer_lock<'a>(
+		&self,
+		mut peer_lock: MutexGuard<Peer>,
+		message: wire::Message<<<CMH as Deref>::Target as wire::CustomMessageReader>::CustomMessage>,
+		their_node_id: &PublicKey,
+		logger: &WithContext<'a, L>
+	) -> Result<Option<wire::Message<<<CMH as Deref>::Target as wire::CustomMessageReader>::CustomMessage>>, MessageHandlingError>
+	{
 		peer_lock.received_message_since_timer_tick = true;
 
 		// Need an Init as first message
@@ -1678,8 +1703,20 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
 			peer_lock.received_channel_announce_since_backlogged = true;
 		}
 
-		mem::drop(peer_lock);
+		Ok(Some(message))
+	}
 
+	// Conducts all message processing that doesn't require us to hold the `peer_lock`.
+	//
+	// Returns the message back if it needs to be broadcasted to all other peers.
+	fn do_handle_message_without_peer_lock<'a>(
+		&self,
+		peer_mutex: &Mutex<Peer>,
+		message: wire::Message<<<CMH as Deref>::Target as wire::CustomMessageReader>::CustomMessage>,
+		their_node_id: &PublicKey,
+		logger: &WithContext<'a, L>
+	) -> Result<Option<wire::Message<<<CMH as Deref>::Target as wire::CustomMessageReader>::CustomMessage>>, MessageHandlingError>
+	{
 		if is_gossip_msg(message.type_id()) {
 			log_gossip!(logger, "Received message {:?} from {}", message, log_pubkey!(their_node_id));
 		} else {
@@ -1881,7 +1918,7 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
 		Ok(should_forward)
 	}
 
-	fn forward_broadcast_msg(&self, peers: &HashMap<Descriptor, Mutex<Peer>>, msg: &wire::Message<<<CMH as core::ops::Deref>::Target as wire::CustomMessageReader>::CustomMessage>, except_node: Option<&PublicKey>) {
+	fn forward_broadcast_msg(&self, peers: &HashMap<Descriptor, Mutex<Peer>>, msg: &wire::Message<<<CMH as Deref>::Target as wire::CustomMessageReader>::CustomMessage>, except_node: Option<&PublicKey>) {
 		match msg {
 			wire::Message::ChannelAnnouncement(ref msg) => {
 				log_gossip!(self.logger, "Sending message to all peers except {:?} or the announced channel's counterparties: {:?}", except_node, msg);
@@ -2273,7 +2310,7 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
 									// We do not have the peers write lock, so we just store that we're
 									// 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));
+									let msg = msg.map(|msg| wire::Message::<<<CMH as Deref>::Target as wire::CustomMessageReader>::CustomMessage>::Error(msg));
 									peers_to_disconnect.insert(node_id, msg);
 								},
 								msgs::ErrorAction::DisconnectPeerWithWarning { msg } => {
@@ -2646,11 +2683,13 @@ mod tests {
 	use bitcoin::blockdata::constants::ChainHash;
 	use bitcoin::secp256k1::{PublicKey, SecretKey};
 
-	use crate::prelude::*;
 	use crate::sync::{Arc, Mutex};
 	use core::convert::Infallible;
 	use core::sync::atomic::{AtomicBool, Ordering};
 
+	#[allow(unused_imports)]
+	use crate::prelude::*;
+
 	#[derive(Clone)]
 	struct FileDescriptor {
 		fd: u16,