diff --git a/fuzz/src/full_stack.rs b/fuzz/src/full_stack.rs index 725797274..5544dbded 100644 --- a/fuzz/src/full_stack.rs +++ b/fuzz/src/full_stack.rs @@ -751,16 +751,16 @@ mod tests { // 00 030000000000000000000000000000000000000000000000000000000000000002 03000000000000000000000000000000 - noise act two (0||pubkey||mac) // // 030012 - inbound read from peer id 0 of len 18 - // 000a 03000000000000000000000000000000 - message header indicating message length 10 - // 03001a - inbound read from peer id 0 of len 26 - // 0010 00022000 00022000 03000000000000000000000000000000 - init message (type 16) with static_remotekey (0x2000) and mac + // 0010 03000000000000000000000000000000 - message header indicating message length 16 + // 030020 - inbound read from peer id 0 of len 32 + // 0010 00021aaa 0008aaaaaaaaaaaa9aaa 03000000000000000000000000000000 - init message (type 16) with static_remotekey required and other bits optional and mac // // 030012 - inbound read from peer id 0 of len 18 - // 0141 03000000000000000000000000000000 - message header indicating message length 321 + // 0147 03000000000000000000000000000000 - message header indicating message length 327 // 0300fe - inbound read from peer id 0 of len 254 // 0020 7500000000000000000000000000000000000000000000000000000000000000 ff4f00f805273c1b203bb5ebf8436bfde57b3be8c2f5e95d9491dbb181909679 000000000000c350 0000000000000000 0000000000000162 ffffffffffffffff 0000000000000222 0000000000000000 000000fd 0006 01e3 030000000000000000000000000000000000000000000000000000000000000001 030000000000000000000000000000000000000000000000000000000000000002 030000000000000000000000000000000000000000000000000000000000000003 030000000000000000000000000000000000000000000000000000000000000004 - beginning of open_channel message - // 030053 - inbound read from peer id 0 of len 83 - // 030000000000000000000000000000000000000000000000000000000000000005 020900000000000000000000000000000000000000000000000000000000000000 01 03000000000000000000000000000000 - rest of open_channel and mac + // 030059 - inbound read from peer id 0 of len 89 + // 030000000000000000000000000000000000000000000000000000000000000005 020900000000000000000000000000000000000000000000000000000000000000 01 0000 01021000 03000000000000000000000000000000 - rest of open_channel and mac // // 00fd00fd - Two feerate requests (all returning min feerate, which our open_channel also uses) (gonna be ingested by FuzzEstimator) // - client should now respond with accept_channel (CHECK 1: type 33 to peer 03000000) @@ -799,19 +799,19 @@ mod tests { // 000302000000000000000000000000000000000000000000000000000000000000000300000000000000000000000000000003000000000000000000000000000000 - inbound noise act 3 // // 030112 - inbound read from peer id 1 of len 18 - // 000a 01000000000000000000000000000000 - message header indicating message length 10 - // 03011a - inbound read from peer id 1 of len 26 - // 0010 00022000 00022000 01000000000000000000000000000000 - init message (type 16) with static_remotekey (0x2000) and mac + // 0010 01000000000000000000000000000000 - message header indicating message length 16 + // 030120 - inbound read from peer id 1 of len 32 + // 0010 00021aaa 0008aaaaaaaaaaaa9aaa 01000000000000000000000000000000 - init message (type 16) with static_remotekey required and other bits optional and mac // // 05 01 030200000000000000000000000000000000000000000000000000000000000000 00c350 0003e8 - create outbound channel to peer 1 for 50k sat // 00fd - One feerate requests (all returning min feerate) (gonna be ingested by FuzzEstimator) // // 030112 - inbound read from peer id 1 of len 18 - // 0110 01000000000000000000000000000000 - message header indicating message length 272 + // 0112 01000000000000000000000000000000 - message header indicating message length 274 // 0301ff - inbound read from peer id 1 of len 255 // 0021 0000000000000000000000000000000000000000000000000000000000000e05 0000000000000162 00000000004c4b40 00000000000003e8 00000000000003e8 00000002 03f0 0005 030000000000000000000000000000000000000000000000000000000000000100 030000000000000000000000000000000000000000000000000000000000000200 030000000000000000000000000000000000000000000000000000000000000300 030000000000000000000000000000000000000000000000000000000000000400 030000000000000000000000000000000000000000000000000000000000000500 02660000000000000000000000000000 - beginning of accept_channel - // 030121 - inbound read from peer id 1 of len 33 - // 0000000000000000000000000000000000 01000000000000000000000000000000 - rest of accept_channel and mac + // 030123 - inbound read from peer id 1 of len 35 + // 0000000000000000000000000000000000 0000 01000000000000000000000000000000 - rest of accept_channel and mac // // 0a - create the funding transaction (client should send funding_created now) // @@ -1005,7 +1005,7 @@ mod tests { // - client now fails the HTLC backwards as it was unable to extract the payment preimage (CHECK 9 duplicate and CHECK 10) let logger = Arc::new(TrackingLogger { lines: Mutex::new(HashMap::new()) }); - 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&(Arc::clone(&logger) as Arc)); + super::do_test(&::hex::decode("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&(Arc::clone(&logger) as Arc)); let log_entries = logger.lines.lock().unwrap(); assert_eq!(log_entries.get(&("lightning::ln::peer_handler".to_string(), "Handling SendAcceptChannel event in peer_handler for node 030000000000000000000000000000000000000000000000000000000000000002 for channel ff4f00f805273c1b203bb5ebf8436bfde57b3be8c2f5e95d9491dbb181909679".to_string())), Some(&1)); // 1 diff --git a/lightning-custom-message/src/lib.rs b/lightning-custom-message/src/lib.rs index a6e43978d..a0a70c9de 100644 --- a/lightning-custom-message/src/lib.rs +++ b/lightning-custom-message/src/lib.rs @@ -20,6 +20,7 @@ //! # use bitcoin::secp256k1::PublicKey; //! # use lightning::io; //! # use lightning::ln::msgs::{DecodeError, LightningError}; +//! # use lightning::ln::features::{InitFeatures, NodeFeatures}; //! use lightning::ln::peer_handler::CustomMessageHandler; //! use lightning::ln::wire::{CustomMessageReader, self}; //! use lightning::util::ser::Writeable; @@ -66,6 +67,12 @@ //! # fn get_and_clear_pending_msg(&self) -> Vec<(PublicKey, Self::CustomMessage)> { //! # unimplemented!() //! # } +//! # fn provided_node_features(&self) -> NodeFeatures { +//! # unimplemented!() +//! # } +//! # fn provided_init_features(&self, _their_node_id: &PublicKey) -> InitFeatures { +//! # unimplemented!() +//! # } //! } //! //! #[derive(Debug)] @@ -106,6 +113,12 @@ //! # fn get_and_clear_pending_msg(&self) -> Vec<(PublicKey, Self::CustomMessage)> { //! # unimplemented!() //! # } +//! # fn provided_node_features(&self) -> NodeFeatures { +//! # unimplemented!() +//! # } +//! # fn provided_init_features(&self, _their_node_id: &PublicKey) -> InitFeatures { +//! # unimplemented!() +//! # } //! } //! //! #[derive(Debug)] @@ -146,6 +159,12 @@ //! # fn get_and_clear_pending_msg(&self) -> Vec<(PublicKey, Self::CustomMessage)> { //! # unimplemented!() //! # } +//! # fn provided_node_features(&self) -> NodeFeatures { +//! # unimplemented!() +//! # } +//! # fn provided_init_features(&self, _their_node_id: &PublicKey) -> InitFeatures { +//! # unimplemented!() +//! # } //! } //! //! # fn main() { @@ -268,6 +287,22 @@ macro_rules! composite_custom_message_handler { )* .collect() } + + fn provided_node_features(&self) -> $crate::lightning::ln::features::NodeFeatures { + $crate::lightning::ln::features::NodeFeatures::empty() + $( + | self.$field.provided_node_features() + )* + } + + fn provided_init_features( + &self, their_node_id: &$crate::bitcoin::secp256k1::PublicKey + ) -> $crate::lightning::ln::features::InitFeatures { + $crate::lightning::ln::features::InitFeatures::empty() + $( + | self.$field.provided_init_features(their_node_id) + )* + } } impl $crate::lightning::ln::wire::CustomMessageReader for $handler { diff --git a/lightning/src/ln/features.rs b/lightning/src/ln/features.rs index 7d4b86f5a..b8087546c 100644 --- a/lightning/src/ln/features.rs +++ b/lightning/src/ln/features.rs @@ -422,8 +422,10 @@ pub struct Features { mark: PhantomData, } -impl Features { - pub(crate) fn or(mut self, o: Self) -> Self { +impl core::ops::BitOr for Features { + type Output = Self; + + fn bitor(mut self, o: Self) -> Self { let total_feature_len = cmp::max(self.flags.len(), o.flags.len()); self.flags.resize(total_feature_len, 0u8); for (byte, o_byte) in self.flags.iter_mut().zip(o.flags.iter()) { @@ -695,6 +697,25 @@ impl Features { self.flags.iter().any(|&byte| (byte & 0b10_10_10_10) != 0) } + /// Returns true if this `Features` object contains required features unknown by `other`. + pub fn requires_unknown_bits_from(&self, other: &Features) -> bool { + // Bitwise AND-ing with all even bits set except for known features will select required + // unknown features. + self.flags.iter().enumerate().any(|(i, &byte)| { + const REQUIRED_FEATURES: u8 = 0b01_01_01_01; + const OPTIONAL_FEATURES: u8 = 0b10_10_10_10; + let unknown_features = if i < other.flags.len() { + // Form a mask similar to !T::KNOWN_FEATURE_MASK only for `other` + !(other.flags[i] + | ((other.flags[i] >> 1) & REQUIRED_FEATURES) + | ((other.flags[i] << 1) & OPTIONAL_FEATURES)) + } else { + 0b11_11_11_11 + }; + (byte & (REQUIRED_FEATURES & unknown_features)) != 0 + }) + } + /// Returns true if this `Features` object contains unknown feature flags which are set as /// "required". pub fn requires_unknown_bits(&self) -> bool { @@ -743,6 +764,50 @@ impl Features { } true } + + /// Sets a required custom feature bit. Errors if `bit` is outside the custom range as defined + /// by [bLIP 2] or if it is a known `T` feature. + /// + /// Note: Required bits are even. If an odd bit is given, then the corresponding even bit will + /// be set instead (i.e., `bit - 1`). + /// + /// [bLIP 2]: https://github.com/lightning/blips/blob/master/blip-0002.md#feature-bits + pub fn set_required_custom_bit(&mut self, bit: usize) -> Result<(), ()> { + self.set_custom_bit(bit - (bit % 2)) + } + + /// Sets an optional custom feature bit. Errors if `bit` is outside the custom range as defined + /// by [bLIP 2] or if it is a known `T` feature. + /// + /// Note: Optional bits are odd. If an even bit is given, then the corresponding odd bit will be + /// set instead (i.e., `bit + 1`). + /// + /// [bLIP 2]: https://github.com/lightning/blips/blob/master/blip-0002.md#feature-bits + pub fn set_optional_custom_bit(&mut self, bit: usize) -> Result<(), ()> { + self.set_custom_bit(bit + (1 - (bit % 2))) + } + + fn set_custom_bit(&mut self, bit: usize) -> Result<(), ()> { + if bit < 256 { + return Err(()); + } + + let byte_offset = bit / 8; + let mask = 1 << (bit - 8 * byte_offset); + if byte_offset < T::KNOWN_FEATURE_MASK.len() { + if (T::KNOWN_FEATURE_MASK[byte_offset] & mask) != 0 { + return Err(()); + } + } + + if self.flags.len() <= byte_offset { + self.flags.resize(byte_offset + 1, 0u8); + } + + self.flags[byte_offset] |= mask; + + Ok(()) + } } impl Features { @@ -869,6 +934,43 @@ mod tests { assert!(features.supports_unknown_bits()); } + #[test] + fn requires_unknown_bits_from() { + let mut features1 = InitFeatures::empty(); + let mut features2 = InitFeatures::empty(); + assert!(!features1.requires_unknown_bits_from(&features2)); + assert!(!features2.requires_unknown_bits_from(&features1)); + + features1.set_data_loss_protect_required(); + assert!(features1.requires_unknown_bits_from(&features2)); + assert!(!features2.requires_unknown_bits_from(&features1)); + + features2.set_data_loss_protect_optional(); + assert!(!features1.requires_unknown_bits_from(&features2)); + assert!(!features2.requires_unknown_bits_from(&features1)); + + features2.set_gossip_queries_required(); + assert!(!features1.requires_unknown_bits_from(&features2)); + assert!(features2.requires_unknown_bits_from(&features1)); + + features1.set_gossip_queries_optional(); + assert!(!features1.requires_unknown_bits_from(&features2)); + assert!(!features2.requires_unknown_bits_from(&features1)); + + features1.set_variable_length_onion_required(); + assert!(features1.requires_unknown_bits_from(&features2)); + assert!(!features2.requires_unknown_bits_from(&features1)); + + features2.set_variable_length_onion_optional(); + assert!(!features1.requires_unknown_bits_from(&features2)); + assert!(!features2.requires_unknown_bits_from(&features1)); + + features1.set_basic_mpp_required(); + features2.set_wumbo_required(); + assert!(features1.requires_unknown_bits_from(&features2)); + assert!(features2.requires_unknown_bits_from(&features1)); + } + #[test] fn convert_to_context_with_relevant_flags() { let mut init_features = InitFeatures::empty(); @@ -881,12 +983,12 @@ mod tests { init_features.set_payment_secret_required(); init_features.set_basic_mpp_optional(); init_features.set_wumbo_optional(); + init_features.set_anchors_zero_fee_htlc_tx_optional(); init_features.set_shutdown_any_segwit_optional(); init_features.set_onion_messages_optional(); init_features.set_channel_type_optional(); init_features.set_scid_privacy_optional(); init_features.set_zero_conf_optional(); - init_features.set_anchors_zero_fee_htlc_tx_optional(); assert!(init_features.initial_routing_sync()); assert!(!init_features.supports_upfront_shutdown_script()); @@ -897,7 +999,7 @@ mod tests { // Check that the flags are as expected: // - option_data_loss_protect (req) // - var_onion_optin (req) | static_remote_key (req) | payment_secret(req) - // - basic_mpp | wumbo + // - basic_mpp | wumbo | anchors_zero_fee_htlc_tx // - opt_shutdown_anysegwit // - onion_messages // - option_channel_type | option_scid_alias @@ -945,6 +1047,36 @@ mod tests { assert!(features.supports_payment_secret()); } + #[test] + fn set_custom_bits() { + let mut features = InvoiceFeatures::empty(); + features.set_variable_length_onion_optional(); + assert_eq!(features.flags[1], 0b00000010); + + assert!(features.set_optional_custom_bit(255).is_err()); + assert!(features.set_required_custom_bit(256).is_ok()); + assert!(features.set_required_custom_bit(258).is_ok()); + assert_eq!(features.flags[31], 0b00000000); + assert_eq!(features.flags[32], 0b00000101); + + let known_bit = ::EVEN_BIT; + let byte_offset = ::BYTE_OFFSET; + assert_eq!(byte_offset, 1); + assert_eq!(features.flags[byte_offset], 0b00000010); + assert!(features.set_required_custom_bit(known_bit).is_err()); + assert_eq!(features.flags[byte_offset], 0b00000010); + + let mut features = InvoiceFeatures::empty(); + assert!(features.set_optional_custom_bit(256).is_ok()); + assert!(features.set_optional_custom_bit(259).is_ok()); + assert_eq!(features.flags[32], 0b00001010); + + let mut features = InvoiceFeatures::empty(); + assert!(features.set_required_custom_bit(257).is_ok()); + assert!(features.set_required_custom_bit(258).is_ok()); + assert_eq!(features.flags[32], 0b00000101); + } + #[test] fn encodes_features_without_length() { let features = OfferFeatures::from_le_bytes(vec![1, 2, 3, 4, 5, 42, 100, 101]); diff --git a/lightning/src/ln/msgs.rs b/lightning/src/ln/msgs.rs index 39cb9454d..76ed56635 100644 --- a/lightning/src/ln/msgs.rs +++ b/lightning/src/ln/msgs.rs @@ -1738,7 +1738,7 @@ impl Readable for Init { (3, remote_network_address, option) }); Ok(Init { - features: features.or(global_features), + features: features | global_features, remote_network_address, }) } diff --git a/lightning/src/ln/peer_handler.rs b/lightning/src/ln/peer_handler.rs index 0659412f7..a20b316eb 100644 --- a/lightning/src/ln/peer_handler.rs +++ b/lightning/src/ln/peer_handler.rs @@ -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. @@ -895,6 +915,13 @@ 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. /// @@ -1290,9 +1317,7 @@ impl bool { mod tests { 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::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)] @@ -2440,19 +2474,51 @@ 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), } ); @@ -2461,13 +2527,36 @@ mod tests { cfgs } - fn create_network<'a>(peer_count: usize, cfgs: &'a Vec) -> Vec> { + 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), + } + ); + } + + cfgs + } + + 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 {}, custom_message_handler: IgnoringMessageHandler {} + 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); @@ -2476,7 +2565,7 @@ mod tests { 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())), @@ -2591,6 +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