X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning%2Fsrc%2Fln%2Fpeer_handler.rs;h=a20b316eb0a93e997a162e9857ef3cd60ad02373;hb=6aca7e1c4db17f43b79504fd44b942b4bc08db9d;hp=5c841d78aaee9b29ad4b4ce71a1369f0be883c56;hpb=3c02e507d67f83469b6e533e551d1f08e3915343;p=rust-lightning diff --git a/lightning/src/ln/peer_handler.rs b/lightning/src/ln/peer_handler.rs index 5c841d78..a20b316e 100644 --- a/lightning/src/ln/peer_handler.rs +++ b/lightning/src/ln/peer_handler.rs @@ -17,7 +17,8 @@ use bitcoin::secp256k1::{self, Secp256k1, SecretKey, PublicKey}; -use crate::chain::keysinterface::{KeysManager, NodeSigner, Recipient}; +use crate::sign::{KeysManager, NodeSigner, Recipient}; +use crate::events::{MessageSendEvent, MessageSendEventsProvider, OnionMessageProvider}; use crate::ln::features::{InitFeatures, NodeFeatures}; use crate::ln::msgs; use crate::ln::msgs::{ChannelMessageHandler, LightningError, NetAddress, OnionMessageHandler, RoutingMessageHandler}; @@ -27,9 +28,8 @@ 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::events::{MessageSendEvent, MessageSendEventsProvider, OnionMessageProvider}; use crate::util::logger::Logger; use crate::prelude::*; @@ -64,6 +64,20 @@ pub trait CustomMessageHandler: wire::CustomMessageReader { /// in the process. Each message is paired with the node id of the intended recipient. If no /// connection to the node exists, then the message is simply not sent. fn get_and_clear_pending_msg(&self) -> Vec<(PublicKey, Self::CustomMessage)>; + + /// Gets the node feature flags which this handler itself supports. All available handlers are + /// queried similarly and their feature flags are OR'd together to form the [`NodeFeatures`] + /// which are broadcasted in our [`NodeAnnouncement`] message. + /// + /// [`NodeAnnouncement`]: crate::ln::msgs::NodeAnnouncement + fn provided_node_features(&self) -> NodeFeatures; + + /// Gets the init feature flags which should be sent to the given peer. All available handlers + /// are queried similarly and their feature flags are OR'd together to form the [`InitFeatures`] + /// which are sent in our [`Init`] message. + /// + /// [`Init`]: crate::ln::msgs::Init + fn provided_init_features(&self, their_node_id: &PublicKey) -> InitFeatures; } /// A dummy struct which implements `RoutingMessageHandler` without storing any routing information @@ -149,6 +163,12 @@ impl CustomMessageHandler for IgnoringMessageHandler { } fn get_and_clear_pending_msg(&self) -> Vec<(PublicKey, Self::CustomMessage)> { Vec::new() } + + fn provided_node_features(&self) -> NodeFeatures { NodeFeatures::empty() } + + fn provided_init_features(&self, _their_node_id: &PublicKey) -> InitFeatures { + InitFeatures::empty() + } } /// A dummy struct which implements `ChannelMessageHandler` without having any channels. @@ -252,17 +272,63 @@ impl ChannelMessageHandler for ErroringMessageHandler { features.set_zero_conf_optional(); features } + + fn handle_open_channel_v2(&self, their_node_id: &PublicKey, msg: &msgs::OpenChannelV2) { + ErroringMessageHandler::push_error(self, their_node_id, msg.temporary_channel_id); + } + + fn handle_accept_channel_v2(&self, their_node_id: &PublicKey, msg: &msgs::AcceptChannelV2) { + ErroringMessageHandler::push_error(self, their_node_id, msg.temporary_channel_id); + } + + fn handle_tx_add_input(&self, their_node_id: &PublicKey, msg: &msgs::TxAddInput) { + ErroringMessageHandler::push_error(self, their_node_id, msg.channel_id); + } + + fn handle_tx_add_output(&self, their_node_id: &PublicKey, msg: &msgs::TxAddOutput) { + ErroringMessageHandler::push_error(self, their_node_id, msg.channel_id); + } + + fn handle_tx_remove_input(&self, their_node_id: &PublicKey, msg: &msgs::TxRemoveInput) { + ErroringMessageHandler::push_error(self, their_node_id, msg.channel_id); + } + + fn handle_tx_remove_output(&self, their_node_id: &PublicKey, msg: &msgs::TxRemoveOutput) { + ErroringMessageHandler::push_error(self, their_node_id, msg.channel_id); + } + + fn handle_tx_complete(&self, their_node_id: &PublicKey, msg: &msgs::TxComplete) { + ErroringMessageHandler::push_error(self, their_node_id, msg.channel_id); + } + + fn handle_tx_signatures(&self, their_node_id: &PublicKey, msg: &msgs::TxSignatures) { + ErroringMessageHandler::push_error(self, their_node_id, msg.channel_id); + } + + fn handle_tx_init_rbf(&self, their_node_id: &PublicKey, msg: &msgs::TxInitRbf) { + ErroringMessageHandler::push_error(self, their_node_id, msg.channel_id); + } + + fn handle_tx_ack_rbf(&self, their_node_id: &PublicKey, msg: &msgs::TxAckRbf) { + ErroringMessageHandler::push_error(self, their_node_id, msg.channel_id); + } + + fn handle_tx_abort(&self, their_node_id: &PublicKey, msg: &msgs::TxAbort) { + ErroringMessageHandler::push_error(self, their_node_id, msg.channel_id); + } } + impl Deref for ErroringMessageHandler { type Target = ErroringMessageHandler; fn deref(&self) -> &Self { self } } /// Provides references to trait impls which handle different types of messages. -pub struct MessageHandler where - CM::Target: ChannelMessageHandler, - RM::Target: RoutingMessageHandler, - OM::Target: OnionMessageHandler, +pub struct MessageHandler 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 +341,15 @@ pub struct MessageHandler 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 +488,7 @@ 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 +607,54 @@ pub type SimpleArcPeerManager = PeerManager = PeerManager, &'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; + type RMT: RoutingMessageHandler + ?Sized; + type RM: Deref; + type OMT: OnionMessageHandler + ?Sized; + type OM: Deref; + type LT: Logger + ?Sized; + type L: Deref; + type CMHT: CustomMessageHandler + ?Sized; + type CMH: Deref; + type NST: NodeSigner + ?Sized; + type NS: Deref; + /// Gets a reference to the underlying [`PeerManager`]. + fn as_ref(&self) -> &PeerManager; +} + +impl +APeerManager for PeerManager where + CM::Target: ChannelMessageHandler, + RM::Target: RoutingMessageHandler, + OM::Target: OnionMessageHandler, + L::Target: Logger, + CMH::Target: CustomMessageHandler, + NS::Target: NodeSigner, +{ + type Descriptor = Descriptor; + type CMT = ::Target; + type CM = CM; + type RMT = ::Target; + type RM = RM; + type OMT = ::Target; + type OM = OM; + type LT = ::Target; + type L = L; + type CMHT = ::Target; + type CMH = CMH; + type NST = ::Target; + type NS = NS; + fn as_ref(&self) -> &PeerManager { 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 +681,7 @@ pub struct PeerManager, + message_handler: MessageHandler, /// 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 +711,6 @@ pub struct PeerManager 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 +799,8 @@ impl PeerManager, current_time: u32, ephemeral_random_data: &[u8; 32], logger: L, custom_message_handler: CMH, node_signer: NS) -> Self { + pub fn new(message_handler: MessageHandler, 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 +882,6 @@ impl InitFeatures { + self.message_handler.chan_handler.provided_init_features(their_node_id) + | self.message_handler.route_handler.provided_init_features(their_node_id) + | self.message_handler.onion_message_handler.provided_init_features(their_node_id) + | self.message_handler.custom_message_handler.provided_init_features(their_node_id) + } + /// Indicates a new outbound connection has been established to a node with the given `node_id` /// and an optional remote network address. /// @@ -1056,7 +1183,7 @@ impl 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) } @@ -1190,9 +1317,7 @@ impl x, Err(e) => { @@ -1323,10 +1446,17 @@ impl { self.message_handler.chan_handler.handle_open_channel(&their_node_id, &msg); }, + wire::Message::OpenChannelV2(msg) => { + self.message_handler.chan_handler.handle_open_channel_v2(&their_node_id, &msg); + }, wire::Message::AcceptChannel(msg) => { self.message_handler.chan_handler.handle_accept_channel(&their_node_id, &msg); }, + wire::Message::AcceptChannelV2(msg) => { + self.message_handler.chan_handler.handle_accept_channel_v2(&their_node_id, &msg); + }, wire::Message::FundingCreated(msg) => { self.message_handler.chan_handler.handle_funding_created(&their_node_id, &msg); @@ -1456,6 +1592,35 @@ impl { + self.message_handler.chan_handler.handle_tx_add_input(&their_node_id, &msg); + }, + wire::Message::TxAddOutput(msg) => { + self.message_handler.chan_handler.handle_tx_add_output(&their_node_id, &msg); + }, + wire::Message::TxRemoveInput(msg) => { + self.message_handler.chan_handler.handle_tx_remove_input(&their_node_id, &msg); + }, + wire::Message::TxRemoveOutput(msg) => { + self.message_handler.chan_handler.handle_tx_remove_output(&their_node_id, &msg); + }, + wire::Message::TxComplete(msg) => { + self.message_handler.chan_handler.handle_tx_complete(&their_node_id, &msg); + }, + wire::Message::TxSignatures(msg) => { + self.message_handler.chan_handler.handle_tx_signatures(&their_node_id, &msg); + }, + wire::Message::TxInitRbf(msg) => { + self.message_handler.chan_handler.handle_tx_init_rbf(&their_node_id, &msg); + }, + wire::Message::TxAckRbf(msg) => { + self.message_handler.chan_handler.handle_tx_ack_rbf(&their_node_id, &msg); + }, + wire::Message::TxAbort(msg) => { + self.message_handler.chan_handler.handle_tx_abort(&their_node_id, &msg); + } + wire::Message::Shutdown(msg) => { self.message_handler.chan_handler.handle_shutdown(&their_node_id, &msg); }, @@ -1543,7 +1708,7 @@ impl { - 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) @@ -1721,12 +1886,24 @@ impl { + log_debug!(self.logger, "Handling SendAcceptChannelV2 event in peer_handler for node {} for channel {}", + log_pubkey!(node_id), + log_bytes!(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_pubkey!(node_id), log_bytes!(msg.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_pubkey!(node_id), + log_bytes!(msg.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_pubkey!(node_id), @@ -1748,6 +1925,60 @@ impl { + log_debug!(self.logger, "Handling SendTxAddInput event in peer_handler for node {} for channel {}", + log_pubkey!(node_id), + log_bytes!(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_pubkey!(node_id), + log_bytes!(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_pubkey!(node_id), + log_bytes!(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_pubkey!(node_id), + log_bytes!(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_pubkey!(node_id), + log_bytes!(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_pubkey!(node_id), + log_bytes!(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_pubkey!(node_id), + log_bytes!(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_pubkey!(node_id), + log_bytes!(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_pubkey!(node_id), + log_bytes!(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_pubkey!(node_id), @@ -1896,7 +2127,7 @@ impl bool { #[cfg(test)] mod tests { - use crate::chain::keysinterface::{NodeSigner, Recipient}; + use crate::sign::{NodeSigner, Recipient}; + use crate::events; + use crate::io; + use crate::ln::features::{InitFeatures, NodeFeatures}; use crate::ln::peer_channel_encryptor::PeerChannelEncryptor; - use crate::ln::peer_handler::{PeerManager, MessageHandler, SocketDescriptor, IgnoringMessageHandler, filter_addresses}; + use crate::ln::peer_handler::{CustomMessageHandler, PeerManager, MessageHandler, SocketDescriptor, IgnoringMessageHandler, filter_addresses}; use crate::ln::{msgs, wire}; - use crate::ln::msgs::NetAddress; - use crate::util::events; + use crate::ln::msgs::{LightningError, NetAddress}; use crate::util::test_utils; - use bitcoin::secp256k1::SecretKey; + use bitcoin::secp256k1::{PublicKey, SecretKey}; use crate::prelude::*; use crate::sync::{Arc, Mutex}; + use core::convert::Infallible; use core::sync::atomic::{AtomicBool, Ordering}; #[derive(Clone)] @@ -2237,19 +2474,74 @@ mod tests { struct PeerManagerCfg { chan_handler: test_utils::TestChannelMessageHandler, routing_handler: test_utils::TestRoutingMessageHandler, + custom_handler: TestCustomMessageHandler, logger: test_utils::TestLogger, node_signer: test_utils::TestNodeSigner, } + struct TestCustomMessageHandler { + features: InitFeatures, + } + + impl wire::CustomMessageReader for TestCustomMessageHandler { + type CustomMessage = Infallible; + fn read(&self, _: u16, _: &mut R) -> Result, msgs::DecodeError> { + Ok(None) + } + } + + impl CustomMessageHandler for TestCustomMessageHandler { + fn handle_custom_message(&self, _: Infallible, _: &PublicKey) -> Result<(), LightningError> { + unreachable!(); + } + + fn get_and_clear_pending_msg(&self) -> Vec<(PublicKey, Self::CustomMessage)> { Vec::new() } + + fn provided_node_features(&self) -> NodeFeatures { NodeFeatures::empty() } + + fn provided_init_features(&self, _: &PublicKey) -> InitFeatures { + self.features.clone() + } + } + fn create_peermgr_cfgs(peer_count: usize) -> Vec { let mut cfgs = Vec::new(); for i in 0..peer_count { let node_secret = SecretKey::from_slice(&[42 + i as u8; 32]).unwrap(); + let features = { + let mut feature_bits = vec![0u8; 33]; + feature_bits[32] = 0b00000001; + InitFeatures::from_le_bytes(feature_bits) + }; + cfgs.push( + PeerManagerCfg{ + chan_handler: test_utils::TestChannelMessageHandler::new(), + logger: test_utils::TestLogger::new(), + routing_handler: test_utils::TestRoutingMessageHandler::new(), + custom_handler: TestCustomMessageHandler { features }, + node_signer: test_utils::TestNodeSigner::new(node_secret), + } + ); + } + + cfgs + } + + fn create_incompatible_peermgr_cfgs(peer_count: usize) -> Vec { + let mut cfgs = Vec::new(); + for i in 0..peer_count { + let node_secret = SecretKey::from_slice(&[42 + i as u8; 32]).unwrap(); + let features = { + let mut feature_bits = vec![0u8; 33 + i + 1]; + feature_bits[33 + i] = 0b00000001; + InitFeatures::from_le_bytes(feature_bits) + }; cfgs.push( PeerManagerCfg{ chan_handler: test_utils::TestChannelMessageHandler::new(), logger: test_utils::TestLogger::new(), routing_handler: test_utils::TestRoutingMessageHandler::new(), + custom_handler: TestCustomMessageHandler { features }, node_signer: test_utils::TestNodeSigner::new(node_secret), } ); @@ -2258,19 +2550,22 @@ mod tests { cfgs } - fn create_network<'a>(peer_count: usize, cfgs: &'a Vec) -> Vec> { + fn create_network<'a>(peer_count: usize, cfgs: &'a Vec) -> Vec> { 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: &cfgs[i].custom_handler + }; + let peer = PeerManager::new(msg_handler, 0, &ephemeral_bytes, &cfgs[i].logger, &cfgs[i].node_signer); peers.push(peer); } peers } - fn establish_connection<'a>(peer_a: &PeerManager, peer_b: &PeerManager) -> (FileDescriptor, FileDescriptor) { + fn establish_connection<'a>(peer_a: &PeerManager, peer_b: &PeerManager) -> (FileDescriptor, FileDescriptor) { let id_a = peer_a.node_signer.get_node_id(Recipient::Node).unwrap(); let mut fd_a = FileDescriptor { fd: 1, outbound_data: Arc::new(Mutex::new(Vec::new())), @@ -2349,7 +2644,7 @@ mod tests { if peers[0].read_event(&mut fd_a, &b_data).is_err() { break; } cfgs[0].chan_handler.pending_events.lock().unwrap() - .push(crate::util::events::MessageSendEvent::SendShutdown { + .push(crate::events::MessageSendEvent::SendShutdown { node_id: peers[1].node_signer.get_node_id(Recipient::Node).unwrap(), msg: msgs::Shutdown { channel_id: [0; 32], @@ -2357,7 +2652,7 @@ mod tests { }, }); cfgs[1].chan_handler.pending_events.lock().unwrap() - .push(crate::util::events::MessageSendEvent::SendShutdown { + .push(crate::events::MessageSendEvent::SendShutdown { node_id: peers[0].node_signer.get_node_id(Recipient::Node).unwrap(), msg: msgs::Shutdown { channel_id: [0; 32], @@ -2385,6 +2680,42 @@ mod tests { thrd_b.join().unwrap(); } + #[test] + fn test_incompatible_peers() { + let cfgs = create_peermgr_cfgs(2); + let incompatible_cfgs = create_incompatible_peermgr_cfgs(2); + + let peers = create_network(2, &cfgs); + let incompatible_peers = create_network(2, &incompatible_cfgs); + let peer_pairs = [(&peers[0], &incompatible_peers[0]), (&incompatible_peers[1], &peers[1])]; + for (peer_a, peer_b) in peer_pairs.iter() { + let id_a = peer_a.node_signer.get_node_id(Recipient::Node).unwrap(); + let mut fd_a = FileDescriptor { + fd: 1, outbound_data: Arc::new(Mutex::new(Vec::new())), + disconnect: Arc::new(AtomicBool::new(false)), + }; + let addr_a = NetAddress::IPv4{addr: [127, 0, 0, 1], port: 1000}; + let mut fd_b = FileDescriptor { + fd: 1, outbound_data: Arc::new(Mutex::new(Vec::new())), + disconnect: Arc::new(AtomicBool::new(false)), + }; + let addr_b = NetAddress::IPv4{addr: [127, 0, 0, 1], port: 1001}; + let initial_data = peer_b.new_outbound_connection(id_a, fd_b.clone(), Some(addr_a.clone())).unwrap(); + peer_a.new_inbound_connection(fd_a.clone(), Some(addr_b.clone())).unwrap(); + assert_eq!(peer_a.read_event(&mut fd_a, &initial_data).unwrap(), false); + peer_a.process_events(); + + let a_data = fd_a.outbound_data.lock().unwrap().split_off(0); + assert_eq!(peer_b.read_event(&mut fd_b, &a_data).unwrap(), false); + + peer_b.process_events(); + let b_data = fd_b.outbound_data.lock().unwrap().split_off(0); + + // Should fail because of unknown required features + assert!(peer_a.read_event(&mut fd_a, &b_data).is_err()); + } + } + #[test] fn test_disconnect_peer() { // Simple test which builds a network of PeerManager, connects and brings them to NoiseState::Finished and