X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning%2Fsrc%2Fln%2Fpeer_handler.rs;h=25ac234a847c5959f5414c74755d975b56a173f3;hb=ca1d5693566b8a44cdf4739bb61f0b102436e172;hp=bb4b076b1bef313c72486a5d00b3494b66fdbaef;hpb=a5ecb851716bc0819586894232653ec4b5e2c67f;p=rust-lightning

diff --git a/lightning/src/ln/peer_handler.rs b/lightning/src/ln/peer_handler.rs
index bb4b076b..25ac234a 100644
--- a/lightning/src/ln/peer_handler.rs
+++ b/lightning/src/ln/peer_handler.rs
@@ -28,7 +28,7 @@ use crate::ln::peer_channel_encryptor::{PeerChannelEncryptor,NextNoiseStep};
 use crate::ln::wire;
 use crate::ln::wire::Encode;
 use crate::onion_message::{CustomOnionMessageContents, CustomOnionMessageHandler, SimpleArcOnionMessenger, SimpleRefOnionMessenger};
-use crate::routing::gossip::{NetworkGraph, P2PGossipSync, NodeId};
+use crate::routing::gossip::{NetworkGraph, P2PGossipSync, NodeId, NodeAlias};
 use crate::util::atomic_counter::AtomicCounter;
 use crate::util::logger::Logger;
 
@@ -259,10 +259,11 @@ impl Deref for ErroringMessageHandler {
 }
 
 /// Provides references to trait impls which handle different types of messages.
-pub struct MessageHandler<CM: Deref, RM: Deref, OM: Deref> where
-		CM::Target: ChannelMessageHandler,
-		RM::Target: RoutingMessageHandler,
-		OM::Target: OnionMessageHandler,
+pub struct MessageHandler<CM: Deref, RM: Deref, OM: Deref, CustomM: Deref> where
+	CM::Target: ChannelMessageHandler,
+	RM::Target: RoutingMessageHandler,
+	OM::Target: OnionMessageHandler,
+	CustomM::Target: CustomMessageHandler,
 {
 	/// A message handler which handles messages specific to channels. Usually this is just a
 	/// [`ChannelManager`] object or an [`ErroringMessageHandler`].
@@ -275,9 +276,15 @@ pub struct MessageHandler<CM: Deref, RM: Deref, OM: Deref> where
 	/// [`P2PGossipSync`]: crate::routing::gossip::P2PGossipSync
 	pub route_handler: RM,
 
-	/// A message handler which handles onion messages. For now, this can only be an
-	/// [`IgnoringMessageHandler`].
+	/// A message handler which handles onion messages. This should generally be an
+	/// [`OnionMessenger`], but can also be an [`IgnoringMessageHandler`].
+	///
+	/// [`OnionMessenger`]: crate::onion_message::OnionMessenger
 	pub onion_message_handler: OM,
+
+	/// A message handler which handles custom messages. The only LDK-provided implementation is
+	/// [`IgnoringMessageHandler`].
+	pub custom_message_handler: CustomM,
 }
 
 /// Provides an object which can be used to send data to and which uniquely identifies a connection
@@ -416,7 +423,7 @@ struct Peer {
 	sync_status: InitSyncTracker,
 
 	msgs_sent_since_pong: usize,
-	awaiting_pong_timer_tick_intervals: i8,
+	awaiting_pong_timer_tick_intervals: i64,
 	received_message_since_timer_tick: bool,
 	sent_gossip_timestamp_filter: bool,
 
@@ -535,6 +542,54 @@ pub type SimpleArcPeerManager<SD, M, T, F, C, L> = PeerManager<SD, Arc<SimpleArc
 /// This is not exported to bindings users as general type aliases don't make sense in bindings.
 pub type SimpleRefPeerManager<'a, 'b, 'c, 'd, 'e, 'f, 'g, 'h, 'i, 'j, 'k, 'l, 'm, SD, M, T, F, C, L> = PeerManager<SD, SimpleRefChannelManager<'a, 'b, 'c, 'd, 'e, 'f, 'g, 'm, M, T, F, L>, &'f P2PGossipSync<&'g NetworkGraph<&'f L>, &'h C, &'f L>, &'i SimpleRefOnionMessenger<'j, 'k, L>, &'f L, IgnoringMessageHandler, &'c KeysManager>;
 
+
+/// A generic trait which is implemented for all [`PeerManager`]s. This makes bounding functions or
+/// structs on any [`PeerManager`] much simpler as only this trait is needed as a bound, rather
+/// than the full set of bounds on [`PeerManager`] itself.
+#[allow(missing_docs)]
+pub trait APeerManager {
+	type Descriptor: SocketDescriptor;
+	type CMT: ChannelMessageHandler + ?Sized;
+	type CM: Deref<Target=Self::CMT>;
+	type RMT: RoutingMessageHandler + ?Sized;
+	type RM: Deref<Target=Self::RMT>;
+	type OMT: OnionMessageHandler + ?Sized;
+	type OM: Deref<Target=Self::OMT>;
+	type LT: Logger + ?Sized;
+	type L: Deref<Target=Self::LT>;
+	type CMHT: CustomMessageHandler + ?Sized;
+	type CMH: Deref<Target=Self::CMHT>;
+	type NST: NodeSigner + ?Sized;
+	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>;
+}
+
+impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CMH: Deref, NS: Deref>
+APeerManager for PeerManager<Descriptor, CM, RM, OM, L, CMH, NS> where
+	CM::Target: ChannelMessageHandler,
+	RM::Target: RoutingMessageHandler,
+	OM::Target: OnionMessageHandler,
+	L::Target: Logger,
+	CMH::Target: CustomMessageHandler,
+	NS::Target: NodeSigner,
+{
+	type Descriptor = Descriptor;
+	type CMT = <CM as Deref>::Target;
+	type CM = CM;
+	type RMT = <RM as Deref>::Target;
+	type RM = RM;
+	type OMT = <OM as Deref>::Target;
+	type OM = OM;
+	type LT = <L as Deref>::Target;
+	type L = L;
+	type CMHT = <CMH as Deref>::Target;
+	type CMH = CMH;
+	type NST = <NS as Deref>::Target;
+	type NS = NS;
+	fn as_ref(&self) -> &PeerManager<Descriptor, CM, RM, OM, L, CMH, NS> { self }
+}
+
 /// A PeerManager manages a set of peers, described by their [`SocketDescriptor`] and marshalls
 /// socket events into messages which it passes on to its [`MessageHandler`].
 ///
@@ -561,7 +616,7 @@ pub struct PeerManager<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: D
 		L::Target: Logger,
 		CMH::Target: CustomMessageHandler,
 		NS::Target: NodeSigner {
-	message_handler: MessageHandler<CM, RM, OM>,
+	message_handler: MessageHandler<CM, RM, OM, CMH>,
 	/// Connection state for each connected peer - we have an outer read-write lock which is taken
 	/// as read while we're doing processing for a peer and taken write when a peer is being added
 	/// or removed.
@@ -591,7 +646,6 @@ pub struct PeerManager<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: D
 	last_node_announcement_serial: AtomicU32,
 
 	ephemeral_key_midstate: Sha256Engine,
-	custom_message_handler: CMH,
 
 	peer_counter: AtomicCounter,
 
@@ -652,7 +706,8 @@ impl<Descriptor: SocketDescriptor, CM: Deref, OM: Deref, L: Deref, NS: Deref> Pe
 			chan_handler: channel_message_handler,
 			route_handler: IgnoringMessageHandler{},
 			onion_message_handler,
-		}, current_time, ephemeral_random_data, logger, IgnoringMessageHandler{}, node_signer)
+			custom_message_handler: IgnoringMessageHandler{},
+		}, current_time, ephemeral_random_data, logger, node_signer)
 	}
 }
 
@@ -679,7 +734,8 @@ impl<Descriptor: SocketDescriptor, RM: Deref, L: Deref, NS: Deref> PeerManager<D
 			chan_handler: ErroringMessageHandler::new(),
 			route_handler: routing_message_handler,
 			onion_message_handler: IgnoringMessageHandler{},
-		}, current_time, ephemeral_random_data, logger, IgnoringMessageHandler{}, node_signer)
+			custom_message_handler: IgnoringMessageHandler{},
+		}, current_time, ephemeral_random_data, logger, node_signer)
 	}
 }
 
@@ -741,7 +797,7 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
 	/// incremented irregularly internally. In general it is best to simply use the current UNIX
 	/// timestamp, however if it is not available a persistent counter that increases once per
 	/// minute should suffice.
-	pub fn new(message_handler: MessageHandler<CM, RM, OM>, current_time: u32, ephemeral_random_data: &[u8; 32], logger: L, custom_message_handler: CMH, node_signer: NS) -> Self {
+	pub fn new(message_handler: MessageHandler<CM, RM, OM, CMH>, current_time: u32, ephemeral_random_data: &[u8; 32], logger: L, node_signer: NS) -> Self {
 		let mut ephemeral_key_midstate = Sha256::engine();
 		ephemeral_key_midstate.input(ephemeral_random_data);
 
@@ -761,7 +817,6 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
 			gossip_processing_backlog_lifted: AtomicBool::new(false),
 			last_node_announcement_serial: AtomicU32::new(current_time),
 			logger,
-			custom_message_handler,
 			node_signer,
 			secp_ctx,
 		}
@@ -1056,7 +1111,7 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
 		match self.do_read_event(peer_descriptor, data) {
 			Ok(res) => Ok(res),
 			Err(e) => {
-				log_trace!(self.logger, "Peer sent invalid data or we decided to disconnect due to a protocol error");
+				log_trace!(self.logger, "Disconnecting peer due to a protocol error (usually a duplicate connection).");
 				self.disconnect_event_internal(peer_descriptor);
 				Err(e)
 			}
@@ -1232,7 +1287,7 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
 									peer.pending_read_is_header = true;
 
 									let mut reader = io::Cursor::new(&msg_data[..]);
-									let message_result = wire::read(&mut reader, &*self.custom_message_handler);
+									let message_result = wire::read(&mut reader, &*self.message_handler.custom_message_handler);
 									let message = match message_result {
 										Ok(x) => x,
 										Err(e) => {
@@ -1543,7 +1598,7 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
 				log_trace!(self.logger, "Received unknown odd message of type {}, ignoring", type_id);
 			},
 			wire::Message::Custom(custom) => {
-				self.custom_message_handler.handle_custom_message(custom, &their_node_id)?;
+				self.message_handler.custom_message_handler.handle_custom_message(custom, &their_node_id)?;
 			},
 		};
 		Ok(should_forward)
@@ -1896,7 +1951,7 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
 				}
 			}
 
-			for (node_id, msg) in self.custom_message_handler.get_and_clear_pending_msg() {
+			for (node_id, msg) in self.message_handler.custom_message_handler.get_and_clear_pending_msg() {
 				if peers_to_disconnect.get(&node_id).is_some() { continue; }
 				self.enqueue_message(&mut *get_peer_for_forwarding!(&node_id), &msg);
 			}
@@ -2103,7 +2158,7 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
 						if let Some((node_id, _)) = peer.their_node_id {
 							self.node_id_to_descriptor.lock().unwrap().remove(&node_id);
 						}
-						self.do_disconnect(descriptor, &*peer, "ping timeout");
+						self.do_disconnect(descriptor, &*peer, "ping/handshake timeout");
 					}
 				}
 			}
@@ -2153,7 +2208,9 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
 			features,
 			timestamp: self.last_node_announcement_serial.fetch_add(1, Ordering::AcqRel),
 			node_id: NodeId::from_pubkey(&self.node_signer.get_node_id(Recipient::Node).unwrap()),
-			rgb, alias, addresses,
+			rgb,
+			alias: NodeAlias(alias),
+			addresses,
 			excess_address_data: Vec::new(),
 			excess_data: Vec::new(),
 		};
@@ -2262,8 +2319,11 @@ mod tests {
 		let mut peers = Vec::new();
 		for i in 0..peer_count {
 			let ephemeral_bytes = [i as u8; 32];
-			let msg_handler = MessageHandler { chan_handler: &cfgs[i].chan_handler, route_handler: &cfgs[i].routing_handler, onion_message_handler: IgnoringMessageHandler {} };
-			let peer = PeerManager::new(msg_handler, 0, &ephemeral_bytes, &cfgs[i].logger, IgnoringMessageHandler {}, &cfgs[i].node_signer);
+			let msg_handler = MessageHandler {
+				chan_handler: &cfgs[i].chan_handler, route_handler: &cfgs[i].routing_handler,
+				onion_message_handler: IgnoringMessageHandler {}, custom_message_handler: IgnoringMessageHandler {}
+			};
+			let peer = PeerManager::new(msg_handler, 0, &ephemeral_bytes, &cfgs[i].logger, &cfgs[i].node_signer);
 			peers.push(peer);
 		}