X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning%2Fsrc%2Fln%2Fpeer_handler.rs;h=3050bcb2ad6f562468a71ffe0ff4cf217e72ee86;hb=9f1660e25db7e2aed650a3510a6b821bd01452a9;hp=86cd344ce352dea1544f27d894a94813a6ca3930;hpb=2d7b06e6194df42f171bde203500fe10e8b28370;p=rust-lightning

diff --git a/lightning/src/ln/peer_handler.rs b/lightning/src/ln/peer_handler.rs
index 86cd344ce..3050bcb2a 100644
--- a/lightning/src/ln/peer_handler.rs
+++ b/lightning/src/ln/peer_handler.rs
@@ -376,6 +376,8 @@ struct PeerHolder<Descriptor: SocketDescriptor> {
 /// lifetimes). Other times you can afford a reference, which is more efficient, in which case
 /// SimpleRefPeerManager is the more appropriate type. Defining these type aliases prevents
 /// issues such as overly long function definitions.
+///
+/// (C-not exported) as Arcs don't make sense in bindings
 pub type SimpleArcPeerManager<SD, M, T, F, C, L> = PeerManager<SD, Arc<SimpleArcChannelManager<M, T, F, L>>, Arc<NetGraphMsgHandler<Arc<NetworkGraph>, Arc<C>, Arc<L>>>, Arc<L>, Arc<IgnoringMessageHandler>>;
 
 /// SimpleRefPeerManager is a type alias for a PeerManager reference, and is the reference
@@ -384,6 +386,8 @@ pub type SimpleArcPeerManager<SD, M, T, F, C, L> = PeerManager<SD, Arc<SimpleArc
 /// usage of lightning-net-tokio (since tokio::spawn requires parameters with static lifetimes).
 /// But if this is not necessary, using a reference is more efficient. Defining these type aliases
 /// helps with issues such as long function definitions.
+///
+/// (C-not exported) as Arcs don't make sense in bindings
 pub type SimpleRefPeerManager<'a, 'b, 'c, 'd, 'e, 'f, 'g, 'h, SD, M, T, F, C, L> = PeerManager<SD, SimpleRefChannelManager<'a, 'b, 'c, 'd, 'e, M, T, F, L>, &'e NetGraphMsgHandler<&'g NetworkGraph, &'h C, &'f L>, &'f L, IgnoringMessageHandler>;
 
 /// A PeerManager manages a set of peers, described by their [`SocketDescriptor`] and marshalls
@@ -902,7 +906,11 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, L: Deref, CMH: Deref> P
 											Ok(x) => x,
 											Err(e) => {
 												match e {
-													(msgs::DecodeError::UnknownRequiredFeature, _) => {
+													// Note that to avoid recursion we never call
+													// `do_attempt_write_data` from here, causing
+													// 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!");
 														continue;
 													}
@@ -916,6 +924,11 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, L: Deref, CMH: Deref> P
 														self.enqueue_message(peer, &msgs::WarningMessage { channel_id: [0; 32], data: "Unreadable/bogus gossip message".to_owned() });
 														continue;
 													}
+													(msgs::DecodeError::UnknownRequiredFeature, ty) => {
+														log_gossip!(self.logger, "Received a message with an unknown required feature flag or TLV, you may want to update!");
+														self.enqueue_message(peer, &msgs::WarningMessage { channel_id: [0; 32], data: format!("Received an unknown required feature/TLV in message type {:?}", ty) });
+														return Err(PeerHandleError { no_connection_possible: false });
+													}
 													(msgs::DecodeError::UnknownVersion, _) => return Err(PeerHandleError { no_connection_possible: false }),
 													(msgs::DecodeError::InvalidValue, _) => {
 														log_debug!(self.logger, "Got an invalid value while deserializing message");