//! call into the provided message handlers (probably a ChannelManager and Router) with messages
//! they should handle, and encoding/sending response messages.
-use secp256k1::key::{SecretKey,PublicKey};
+use bitcoin::secp256k1::key::{SecretKey,PublicKey};
use ln::features::InitFeatures;
use ln::msgs;
use ln::msgs::ChannelMessageHandler;
use ln::channelmanager::{SimpleArcChannelManager, SimpleRefChannelManager};
+use util::ser::VecWriter;
use ln::peer_channel_encryptor::{PeerChannelEncryptor,NextNoiseStep};
use ln::wire;
use ln::wire::Encode;
use util::byte_utils;
use util::events::{MessageSendEvent, MessageSendEventsProvider};
use util::logger::Logger;
-use util::ser::Writer;
use std::collections::{HashMap,hash_map,HashSet,LinkedList};
use std::sync::{Arc, Mutex};
use std::{cmp,error,hash,fmt};
use std::ops::Deref;
-use bitcoin_hashes::sha256::Hash as Sha256;
-use bitcoin_hashes::sha256::HashEngine as Sha256Engine;
-use bitcoin_hashes::{HashEngine, Hash};
+use bitcoin::hashes::sha256::Hash as Sha256;
+use bitcoin::hashes::sha256::HashEngine as Sha256Engine;
+use bitcoin::hashes::{HashEngine, Hash};
/// Provides references to trait impls which handle different types of messages.
pub struct MessageHandler<CM: Deref> where CM::Target: msgs::ChannelMessageHandler {
/// For efficiency, Clone should be relatively cheap for this type.
///
/// You probably want to just extend an int and put a file descriptor in a struct and implement
-/// send_data. Note that if you are using a higher-level net library that may close() itself, be
-/// careful to ensure you don't have races whereby you might register a new connection with an fd
-/// the same as a yet-to-be-disconnect_event()-ed.
+/// send_data. Note that if you are using a higher-level net library that may call close() itself,
+/// be careful to ensure you don't have races whereby you might register a new connection with an
+/// fd which is the same as a previous one which has yet to be removed via
+/// PeerManager::socket_disconnected().
pub trait SocketDescriptor : cmp::Eq + hash::Hash + Clone {
/// Attempts to send some data from the given slice to the peer.
///
/// Returns the amount of data which was sent, possibly 0 if the socket has since disconnected.
- /// Note that in the disconnected case, a disconnect_event must still fire and further write
+ /// Note that in the disconnected case, socket_disconnected must still fire and further write
/// attempts may occur until that time.
///
/// If the returned size is smaller than data.len(), a write_available event must
/// *not* imply that further read events should be paused.
fn send_data(&mut self, data: &[u8], resume_read: bool) -> usize;
/// Disconnect the socket pointed to by this SocketDescriptor. Once this function returns, no
- /// more calls to write_event, read_event or disconnect_event may be made with this descriptor.
- /// No disconnect_event should be generated as a result of this call, though obviously races
- /// may occur whereby disconnect_socket is called after a call to disconnect_event but prior to
- /// that event completing.
+ /// more calls to write_buffer_space_avail, read_event or socket_disconnected may be made with
+ /// this descriptor. No socket_disconnected call should be generated as a result of this call,
+ /// though races may occur whereby disconnect_socket is called after a call to
+ /// socket_disconnected but prior to socket_disconnected returning.
fn disconnect_socket(&mut self);
}
/// Error for PeerManager errors. If you get one of these, you must disconnect the socket and
-/// generate no further read/write_events for the descriptor, only triggering a single
-/// disconnect_event (unless it was provided in response to a new_*_connection event, in which case
-/// no such disconnect_event must be generated and the socket be silently disconencted).
+/// generate no further read_event/write_buffer_space_avail calls for the descriptor, only
+/// triggering a single socket_disconnected call (unless it was provided in response to a
+/// new_*_connection event, in which case no such socket_disconnected() must be called and the
+/// socket silently disconencted).
pub struct PeerHandleError {
/// Used to indicate that we probably can't make any future connections to this peer, implying
/// we should go ahead and force-close any channels we have with it.
/// announcements/updates for the given channel_id then we will send it when we get to that
/// point and we shouldn't send it yet to avoid sending duplicate updates. If we've already
/// sent the old versions, we should send the update, and so return true here.
- fn should_forward_channel(&self, channel_id: u64)->bool{
+ fn should_forward_channel_announcement(&self, channel_id: u64)->bool{
match self.sync_status {
InitSyncTracker::NoSyncRequested => true,
InitSyncTracker::ChannelsSyncing(i) => i < channel_id,
InitSyncTracker::NodesSyncing(_) => true,
}
}
+
+ /// Similar to the above, but for node announcements indexed by node_id.
+ fn should_forward_node_announcement(&self, node_id: PublicKey) -> bool {
+ match self.sync_status {
+ InitSyncTracker::NoSyncRequested => true,
+ InitSyncTracker::ChannelsSyncing(_) => false,
+ InitSyncTracker::NodesSyncing(pk) => pk < node_id,
+ }
+ }
}
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.
-pub type SimpleArcPeerManager<SD, M> = Arc<PeerManager<SD, SimpleArcChannelManager<M>>>;
+pub type SimpleArcPeerManager<SD, M, T, F> = Arc<PeerManager<SD, SimpleArcChannelManager<M, T, F>>>;
/// SimpleRefPeerManager is a type alias for a PeerManager reference, and is the reference
/// counterpart to the SimpleArcPeerManager type alias. Use this type by default when you don't
/// 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.
-pub type SimpleRefPeerManager<'a, SD, M> = PeerManager<SD, SimpleRefChannelManager<'a, M>>;
+pub type SimpleRefPeerManager<'a, 'b, 'c, 'd, SD, M, T, F> = PeerManager<SD, SimpleRefChannelManager<'a, 'b, 'c, 'd, M, T, F>>;
/// A PeerManager manages a set of peers, described by their SocketDescriptor and marshalls socket
/// events into messages which it passes on to its MessageHandlers.
logger: Arc<Logger>,
}
-struct VecWriter(Vec<u8>);
-impl Writer for VecWriter {
- fn write_all(&mut self, buf: &[u8]) -> Result<(), ::std::io::Error> {
- self.0.extend_from_slice(buf);
- Ok(())
- }
- fn size_hint(&mut self, size: usize) {
- self.0.reserve_exact(size);
- }
-}
-
macro_rules! encode_msg {
($msg: expr) => {{
let mut buffer = VecWriter(Vec::new());
}
/// Manages and reacts to connection events. You probably want to use file descriptors as PeerIds.
-/// PeerIds may repeat, but only after disconnect_event() has been called.
+/// PeerIds may repeat, but only after socket_disconnected() has been called.
impl<Descriptor: SocketDescriptor, CM: Deref> PeerManager<Descriptor, CM> where CM::Target: msgs::ChannelMessageHandler {
/// Constructs a new PeerManager with the given message handlers and node_id secret key
/// ephemeral_random_data is used to derive per-connection ephemeral keys and must be
}
/// Indicates a new outbound connection has been established to a node with the given node_id.
- /// Note that if an Err is returned here you MUST NOT call disconnect_event for the new
+ /// Note that if an Err is returned here you MUST NOT call socket_disconnected for the new
/// descriptor but must disconnect the connection immediately.
///
/// Returns a small number of bytes to send to the remote node (currently always 50).
///
- /// Panics if descriptor is duplicative with some other descriptor which has not yet has a
- /// disconnect_event.
+ /// Panics if descriptor is duplicative with some other descriptor which has not yet had a
+ /// socket_disconnected().
pub fn new_outbound_connection(&self, their_node_id: PublicKey, descriptor: Descriptor) -> Result<Vec<u8>, PeerHandleError> {
let mut peer_encryptor = PeerChannelEncryptor::new_outbound(their_node_id.clone(), self.get_ephemeral_key());
let res = peer_encryptor.get_act_one().to_vec();
///
/// May refuse the connection by returning an Err, but will never write bytes to the remote end
/// (outbound connector always speaks first). Note that if an Err is returned here you MUST NOT
- /// call disconnect_event for the new descriptor but must disconnect the connection
+ /// call socket_disconnected for the new descriptor but must disconnect the connection
/// immediately.
///
- /// Panics if descriptor is duplicative with some other descriptor which has not yet has a
- /// disconnect_event.
+ /// Panics if descriptor is duplicative with some other descriptor which has not yet had
+ /// socket_disconnected called.
pub fn new_inbound_connection(&self, descriptor: Descriptor) -> Result<(), PeerHandleError> {
let peer_encryptor = PeerChannelEncryptor::new_inbound(&self.our_node_secret);
let pending_read_buffer = [0; 50].to_vec(); // Noise act one is 50 bytes
InitSyncTracker::NoSyncRequested => {},
InitSyncTracker::ChannelsSyncing(c) if c < 0xffff_ffff_ffff_ffff => {
let steps = ((MSG_BUFF_SIZE - peer.pending_outbound_buffer.len() + 2) / 3) as u8;
- let all_messages = self.message_handler.route_handler.get_next_channel_announcements(0, steps);
- for &(ref announce, ref update_a, ref update_b) in all_messages.iter() {
+ let all_messages = self.message_handler.route_handler.get_next_channel_announcements(c, steps);
+ for &(ref announce, ref update_a_option, ref update_b_option) in all_messages.iter() {
encode_and_send_msg!(announce);
- encode_and_send_msg!(update_a);
- encode_and_send_msg!(update_b);
+ if let &Some(ref update_a) = update_a_option {
+ encode_and_send_msg!(update_a);
+ }
+ if let &Some(ref update_b) = update_b_option {
+ encode_and_send_msg!(update_b);
+ }
peer.sync_status = InitSyncTracker::ChannelsSyncing(announce.contents.short_channel_id + 1);
}
if all_messages.is_empty() || all_messages.len() != steps as usize {
///
/// Will most likely call send_data on the descriptor passed in (or the descriptor handed into
/// new_*\_connection) before returning. Thus, be very careful with reentrancy issues! The
- /// invariants around calling write_event in case a write did not fully complete must still
- /// hold - be ready to call write_event again if a write call generated here isn't sufficient!
- /// Panics if the descriptor was not previously registered in a new_\*_connection event.
- pub fn write_event(&self, descriptor: &mut Descriptor) -> Result<(), PeerHandleError> {
+ /// invariants around calling write_buffer_space_avail in case a write did not fully complete
+ /// must still hold - be ready to call write_buffer_space_avail again if a write call generated
+ /// here isn't sufficient! Panics if the descriptor was not previously registered in a
+ /// new_\*_connection event.
+ pub fn write_buffer_space_avail(&self, descriptor: &mut Descriptor) -> Result<(), PeerHandleError> {
let mut peers = self.peers.lock().unwrap();
match peers.peers.get_mut(descriptor) {
None => panic!("Descriptor for write_event is not already known to PeerManager"),
/// Thus, however, you almost certainly want to call process_events() after any read_event to
/// generate send_data calls to handle responses.
///
- /// If Ok(true) is returned, further read_events should not be triggered until a write_event on
- /// this file descriptor has resume_read set (preventing DoS issues in the send buffer).
+ /// If Ok(true) is returned, further read_events should not be triggered until a send_data call
+ /// on this file descriptor has resume_read set (preventing DoS issues in the send buffer).
///
/// Panics if the descriptor was not previously registered in a new_*_connection event.
- pub fn read_event(&self, peer_descriptor: &mut Descriptor, data: Vec<u8>) -> Result<bool, PeerHandleError> {
+ pub fn read_event(&self, peer_descriptor: &mut Descriptor, data: &[u8]) -> Result<bool, PeerHandleError> {
match self.do_read_event(peer_descriptor, data) {
Ok(res) => Ok(res),
Err(e) => {
}
}
- fn do_read_event(&self, peer_descriptor: &mut Descriptor, data: Vec<u8>) -> Result<bool, PeerHandleError> {
+ fn do_read_event(&self, peer_descriptor: &mut Descriptor, data: &[u8]) -> Result<bool, PeerHandleError> {
let pause_read = {
let mut peers_lock = self.peers.lock().unwrap();
let peers = &mut *peers_lock;
}
}
- macro_rules! try_potential_decodeerror {
- ($thing: expr) => {
- match $thing {
- Ok(x) => x,
- Err(e) => {
- match e {
- msgs::DecodeError::UnknownVersion => return Err(PeerHandleError{ no_connection_possible: false }),
- msgs::DecodeError::UnknownRequiredFeature => {
- log_debug!(self, "Got a channel/node announcement with an known required feature flag, you may want to update!");
- continue;
- },
- msgs::DecodeError::InvalidValue => {
- log_debug!(self, "Got an invalid value while deserializing message");
- return Err(PeerHandleError{ no_connection_possible: false });
- },
- msgs::DecodeError::ShortRead => {
- log_debug!(self, "Deserialization failed due to shortness of message");
- return Err(PeerHandleError{ no_connection_possible: false });
- },
- msgs::DecodeError::ExtraAddressesPerType => {
- log_debug!(self, "Error decoding message, ignoring due to lnd spec incompatibility. See https://github.com/lightningnetwork/lnd/issues/1407");
- continue;
- },
- msgs::DecodeError::BadLengthDescriptor => return Err(PeerHandleError{ no_connection_possible: false }),
- msgs::DecodeError::Io(_) => return Err(PeerHandleError{ no_connection_possible: false }),
- }
- }
- };
- }
- }
-
macro_rules! insert_node_id {
() => {
match peers.node_id_to_descriptor.entry(peer.their_node_id.unwrap()) {
peer.pending_read_is_header = true;
let mut reader = ::std::io::Cursor::new(&msg_data[..]);
- let message = try_potential_decodeerror!(wire::read(&mut reader));
+ let message_result = wire::read(&mut reader);
+ let message = match message_result {
+ Ok(x) => x,
+ Err(e) => {
+ match e {
+ msgs::DecodeError::UnknownVersion => return Err(PeerHandleError { no_connection_possible: false }),
+ msgs::DecodeError::UnknownRequiredFeature => {
+ log_debug!(self, "Got a channel/node announcement with an known required feature flag, you may want to update!");
+ continue;
+ }
+ msgs::DecodeError::InvalidValue => {
+ log_debug!(self, "Got an invalid value while deserializing message");
+ return Err(PeerHandleError { no_connection_possible: false });
+ }
+ msgs::DecodeError::ShortRead => {
+ log_debug!(self, "Deserialization failed due to shortness of message");
+ return Err(PeerHandleError { no_connection_possible: false });
+ }
+ msgs::DecodeError::BadLengthDescriptor => return Err(PeerHandleError { no_connection_possible: false }),
+ msgs::DecodeError::Io(_) => return Err(PeerHandleError { no_connection_possible: false }),
+ }
+ }
+ };
+
log_trace!(self, "Received message of type {} from {}", message.type_id(), log_pubkey!(peer.their_node_id.unwrap()));
// Need an Init as first message
// Unknown messages:
wire::Message::Unknown(msg_type) if msg_type.is_even() => {
+ log_debug!(self, "Received unknown even message of type {}, disconnecting peer!", msg_type);
// Fail the channel if message is an even, unknown type as per BOLT #1.
return Err(PeerHandleError{ no_connection_possible: true });
},
- wire::Message::Unknown(_) => {},
+ wire::Message::Unknown(msg_type) => {
+ log_trace!(self, "Received unknown odd message of type {}, ignoring", msg_type);
+ },
}
}
}
for (ref descriptor, ref mut peer) in peers.peers.iter_mut() {
if !peer.channel_encryptor.is_ready_for_encryption() || peer.their_features.is_none() ||
- !peer.should_forward_channel(msg.contents.short_channel_id) {
+ !peer.should_forward_channel_announcement(msg.contents.short_channel_id) {
continue
}
match peer.their_node_id {
}
}
},
+ MessageSendEvent::BroadcastNodeAnnouncement { ref msg } => {
+ log_trace!(self, "Handling BroadcastNodeAnnouncement event in peer_handler");
+ if self.message_handler.route_handler.handle_node_announcement(msg).is_ok() {
+ let encoded_msg = encode_msg!(msg);
+
+ for (ref descriptor, ref mut peer) in peers.peers.iter_mut() {
+ if !peer.channel_encryptor.is_ready_for_encryption() || peer.their_features.is_none() ||
+ !peer.should_forward_node_announcement(msg.contents.node_id) {
+ continue
+ }
+ peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encoded_msg[..]));
+ self.do_attempt_write_data(&mut (*descriptor).clone(), peer);
+ }
+ }
+ },
MessageSendEvent::BroadcastChannelUpdate { ref msg } => {
log_trace!(self, "Handling BroadcastChannelUpdate event in peer_handler for short channel id {}", msg.contents.short_channel_id);
if self.message_handler.route_handler.handle_channel_update(msg).is_ok() {
for (ref descriptor, ref mut peer) in peers.peers.iter_mut() {
if !peer.channel_encryptor.is_ready_for_encryption() || peer.their_features.is_none() ||
- !peer.should_forward_channel(msg.contents.short_channel_id) {
+ !peer.should_forward_channel_announcement(msg.contents.short_channel_id) {
continue
}
peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encoded_msg[..]));
/// Indicates that the given socket descriptor's connection is now closed.
///
- /// This must be called even if a PeerHandleError was given for a read_event or write_event,
- /// but must NOT be called if a PeerHandleError was provided out of a new_\*\_connection event!
+ /// This must only be called if the socket has been disconnected by the peer or your own
+ /// decision to disconnect it and must NOT be called in any case where other parts of this
+ /// library (eg PeerHandleError, explicit disconnect_socket calls) instruct you to disconnect
+ /// the peer.
///
/// Panics if the descriptor was not previously registered in a successful new_*_connection event.
- pub fn disconnect_event(&self, descriptor: &Descriptor) {
+ pub fn socket_disconnected(&self, descriptor: &Descriptor) {
self.disconnect_event_internal(descriptor, false);
}
let peers_needing_send = &mut peers.peers_needing_send;
let node_id_to_descriptor = &mut peers.node_id_to_descriptor;
let peers = &mut peers.peers;
+ let mut descriptors_needing_disconnect = Vec::new();
peers.retain(|descriptor, peer| {
- if peer.awaiting_pong == true {
+ if peer.awaiting_pong {
peers_needing_send.remove(descriptor);
+ descriptors_needing_disconnect.push(descriptor.clone());
match peer.their_node_id {
Some(node_id) => {
+ log_trace!(self, "Disconnecting peer with id {} due to ping timeout", node_id);
node_id_to_descriptor.remove(&node_id);
- self.message_handler.chan_handler.peer_disconnected(&node_id, true);
+ self.message_handler.chan_handler.peer_disconnected(&node_id, false);
+ }
+ None => {
+ // This can't actually happen as we should have hit
+ // is_ready_for_encryption() previously on this same peer.
+ unreachable!();
},
- None => {}
}
+ return false;
+ }
+
+ if !peer.channel_encryptor.is_ready_for_encryption() {
+ // The peer needs to complete its handshake before we can exchange messages
+ return true;
}
let ping = msgs::Ping {
ponglen: 0,
byteslen: 64,
};
- peer.pending_outbound_buffer.push_back(encode_msg!(&ping));
+ peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(&ping)));
+
let mut descriptor_clone = descriptor.clone();
self.do_attempt_write_data(&mut descriptor_clone, peer);
- if peer.awaiting_pong {
- false // Drop the peer
- } else {
- peer.awaiting_pong = true;
- true
- }
+ peer.awaiting_pong = true;
+ true
});
+
+ for mut descriptor in descriptors_needing_disconnect.drain(..) {
+ descriptor.disconnect_socket();
+ }
}
}
}
#[cfg(test)]
mod tests {
+ use bitcoin::secp256k1::Signature;
+ use bitcoin::BitcoinHash;
+ use bitcoin::network::constants::Network;
+ use bitcoin::blockdata::constants::genesis_block;
use ln::peer_handler::{PeerManager, MessageHandler, SocketDescriptor};
use ln::msgs;
+ use ln::features::ChannelFeatures;
use util::events;
use util::test_utils;
use util::logger::Logger;
- use secp256k1::Secp256k1;
- use secp256k1::key::{SecretKey, PublicKey};
+ use bitcoin::secp256k1::Secp256k1;
+ use bitcoin::secp256k1::key::{SecretKey, PublicKey};
use rand::{thread_rng, Rng};
- use std::sync::{Arc};
+ use std;
+ use std::cmp::min;
+ use std::sync::{Arc, Mutex};
+ use std::sync::atomic::{AtomicUsize, Ordering};
- #[derive(PartialEq, Eq, Clone, Hash)]
+ #[derive(Clone)]
struct FileDescriptor {
fd: u16,
+ outbound_data: Arc<Mutex<Vec<u8>>>,
+ }
+ impl PartialEq for FileDescriptor {
+ fn eq(&self, other: &Self) -> bool {
+ self.fd == other.fd
+ }
+ }
+ impl Eq for FileDescriptor { }
+ impl std::hash::Hash for FileDescriptor {
+ fn hash<H: std::hash::Hasher>(&self, hasher: &mut H) {
+ self.fd.hash(hasher)
+ }
}
impl SocketDescriptor for FileDescriptor {
fn send_data(&mut self, data: &[u8], _resume_read: bool) -> usize {
+ self.outbound_data.lock().unwrap().extend_from_slice(data);
data.len()
}
chan_handlers
}
- fn create_network<'a>(peer_count: usize, chan_handlers: &'a Vec<test_utils::TestChannelMessageHandler>) -> Vec<PeerManager<FileDescriptor, &'a test_utils::TestChannelMessageHandler>> {
+ fn create_network<'a>(peer_count: usize, chan_handlers: &'a Vec<test_utils::TestChannelMessageHandler>
, routing_handlers: Option<&'a Vec<Arc<msgs::RoutingMessageHandler>>>) -> Vec<PeerManager<FileDescriptor, &'a test_utils::TestChannelMessageHandler>> {
let mut peers = Vec::new();
let mut rng = thread_rng();
let logger : Arc<Logger> = Arc::new(test_utils::TestLogger::new());
rng.fill_bytes(&mut ephemeral_bytes);
for i in 0..peer_count {
- let router = test_utils::TestRoutingMessageHandler::new();
+ let router = if let Some(routers) = routing_handlers { routers[i].clone() } else {
+ Arc::new(test_utils::TestRoutingMessageHandler::new())
+ };
let node_id = {
let mut key_slice = [0;32];
rng.fill_bytes(&mut key_slice);
SecretKey::from_slice(&key_slice).unwrap()
};
- let msg_handler = MessageHandler { chan_handler: &chan_handlers[i], route_handler: Arc::new(router) };
+ let msg_handler = MessageHandler { chan_handler: &chan_handlers[i], route_handler: router };
let peer = PeerManager::new(msg_handler, node_id, &ephemeral_bytes, Arc::clone(&logger));
peers.push(peer);
}
peers
}
- fn establish_connection<'a>(peer_a: &PeerManager<FileDescriptor, &'a test_utils::TestChannelMessageHandler>, peer_b: &PeerManager<FileDescriptor, &'a test_utils::TestChannelMessageHandler>) {
+ fn establish_connection<'a>(peer_a: &PeerManager<FileDescriptor, &'a test_utils::TestChannelMessageHandler>, peer_b: &PeerManager<FileDescriptor, &'a test_utils::TestChannelMessageHandler>) -> (FileDescriptor, FileDescriptor) {
let secp_ctx = Secp256k1::new();
- let their_id = PublicKey::from_secret_key(&secp_ctx, &peer_b.our_node_secret);
- let fd = FileDescriptor { fd: 1};
- peer_a.new_inbound_connection(fd.clone()).unwrap();
- peer_a.peers.lock().unwrap().node_id_to_descriptor.insert(their_id, fd.clone());
+ let a_id = PublicKey::from_secret_key(&secp_ctx, &peer_a.our_node_secret);
+ let mut fd_a = FileDescriptor { fd: 1, outbound_data: Arc::new(Mutex::new(Vec::new())) };
+ let mut fd_b = FileDescriptor { fd: 1, outbound_data: Arc::new(Mutex::new(Vec::new())) };
+ let initial_data = peer_b.new_outbound_connection(a_id, fd_b.clone()).unwrap();
+ peer_a.new_inbound_connection(fd_a.clone()).unwrap();
+ assert_eq!(peer_a.read_event(&mut fd_a, &initial_data).unwrap(), false);
+ assert_eq!(peer_b.read_event(&mut fd_b, &fd_a.outbound_data.lock().unwrap().split_off(0)).unwrap(), false);
+ assert_eq!(peer_a.read_event(&mut fd_a, &fd_b.outbound_data.lock().unwrap().split_off(0)).unwrap(), false);
+ (fd_a.clone(), fd_b.clone())
}
#[test]
// push a DisconnectPeer event to remove the node flagged by id
let chan_handlers = create_chan_handlers(2);
let chan_handler = test_utils::TestChannelMessageHandler::new();
- let mut peers = create_network(2, &chan_handlers);
+ let mut peers = create_network(2, &chan_handlers, None);
establish_connection(&peers[0], &peers[1]);
assert_eq!(peers[0].peers.lock().unwrap().peers.len(), 1);
peers[0].process_events();
assert_eq!(peers[0].peers.lock().unwrap().peers.len(), 0);
}
+
#[test]
- fn test_timer_tick_occured(){
+ fn test_timer_tick_occurred() {
// Create peers, a vector of two peer managers, perform initial set up and check that peers[0] has one Peer.
let chan_handlers = create_chan_handlers(2);
- let peers = create_network(2, &chan_handlers);
+ let peers = create_network(2, &chan_handlers, None);
establish_connection(&peers[0], &peers[1]);
assert_eq!(peers[0].peers.lock().unwrap().peers.len(), 1);
peers[0].timer_tick_occured();
assert_eq!(peers[0].peers.lock().unwrap().peers.len(), 0);
}
+
+ pub struct TestRoutingMessageHandler {
+ pub chan_upds_recvd: AtomicUsize,
+ pub chan_anns_recvd: AtomicUsize,
+ pub chan_anns_sent: AtomicUsize,
+ }
+
+ impl TestRoutingMessageHandler {
+ pub fn new() -> Self {
+ TestRoutingMessageHandler {
+ chan_upds_recvd: AtomicUsize::new(0),
+ chan_anns_recvd: AtomicUsize::new(0),
+ chan_anns_sent: AtomicUsize::new(0),
+ }
+ }
+
+ }
+ impl msgs::RoutingMessageHandler for TestRoutingMessageHandler {
+ fn handle_node_announcement(&self, _msg: &msgs::NodeAnnouncement) -> Result<bool, msgs::LightningError> {
+ Err(msgs::LightningError { err: "", action: msgs::ErrorAction::IgnoreError })
+ }
+ fn handle_channel_announcement(&self, _msg: &msgs::ChannelAnnouncement) -> Result<bool, msgs::LightningError> {
+ self.chan_anns_recvd.fetch_add(1, Ordering::AcqRel);
+ Err(msgs::LightningError { err: "", action: msgs::ErrorAction::IgnoreError })
+ }
+ fn handle_channel_update(&self, _msg: &msgs::ChannelUpdate) -> Result<bool, msgs::LightningError> {
+ self.chan_upds_recvd.fetch_add(1, Ordering::AcqRel);
+ Err(msgs::LightningError { err: "", action: msgs::ErrorAction::IgnoreError })
+ }
+ fn handle_htlc_fail_channel_update(&self, _update: &msgs::HTLCFailChannelUpdate) {}
+ fn get_next_channel_announcements(&self, starting_point: u64, batch_amount: u8) -> Vec<(msgs::ChannelAnnouncement, Option<msgs::ChannelUpdate>, Option<msgs::ChannelUpdate>)> {
+ let mut chan_anns = Vec::new();
+ const TOTAL_UPDS: u64 = 100;
+ let end: u64 = min(starting_point + batch_amount as u64, TOTAL_UPDS - self.chan_anns_sent.load(Ordering::Acquire) as u64);
+ for i in starting_point..end {
+ let chan_upd_1 = get_dummy_channel_update(i);
+ let chan_upd_2 = get_dummy_channel_update(i);
+ let chan_ann = get_dummy_channel_announcement(i);
+
+ chan_anns.push((chan_ann, Some(chan_upd_1), Some(chan_upd_2)));
+ }
+
+ self.chan_anns_sent.fetch_add(chan_anns.len(), Ordering::AcqRel);
+ chan_anns
+ }
+
+ fn get_next_node_announcements(&self, _starting_point: Option<&PublicKey>, _batch_amount: u8) -> Vec<msgs::NodeAnnouncement> {
+ Vec::new()
+ }
+
+ fn should_request_full_sync(&self, _node_id: &PublicKey) -> bool {
+ true
+ }
+ }
+
+ fn get_dummy_channel_announcement(short_chan_id: u64) -> msgs::ChannelAnnouncement {
+ use bitcoin::secp256k1::ffi::Signature as FFISignature;
+ let secp_ctx = Secp256k1::new();
+ let network = Network::Testnet;
+ let node_1_privkey = SecretKey::from_slice(&[42; 32]).unwrap();
+ let node_2_privkey = SecretKey::from_slice(&[41; 32]).unwrap();
+ let node_1_btckey = SecretKey::from_slice(&[40; 32]).unwrap();
+ let node_2_btckey = SecretKey::from_slice(&[39; 32]).unwrap();
+ let unsigned_ann = msgs::UnsignedChannelAnnouncement {
+ features: ChannelFeatures::supported(),
+ chain_hash: genesis_block(network).header.bitcoin_hash(),
+ short_channel_id: short_chan_id,
+ node_id_1: PublicKey::from_secret_key(&secp_ctx, &node_1_privkey),
+ node_id_2: PublicKey::from_secret_key(&secp_ctx, &node_2_privkey),
+ bitcoin_key_1: PublicKey::from_secret_key(&secp_ctx, &node_1_btckey),
+ bitcoin_key_2: PublicKey::from_secret_key(&secp_ctx, &node_2_btckey),
+ excess_data: Vec::new(),
+ };
+
+ msgs::ChannelAnnouncement {
+ node_signature_1: Signature::from(FFISignature::new()),
+ node_signature_2: Signature::from(FFISignature::new()),
+ bitcoin_signature_1: Signature::from(FFISignature::new()),
+ bitcoin_signature_2: Signature::from(FFISignature::new()),
+ contents: unsigned_ann,
+ }
+ }
+
+ fn get_dummy_channel_update(short_chan_id: u64) -> msgs::ChannelUpdate {
+ use bitcoin::secp256k1::ffi::Signature as FFISignature;
+ let network = Network::Testnet;
+ msgs::ChannelUpdate {
+ signature: Signature::from(FFISignature::new()),
+ contents: msgs::UnsignedChannelUpdate {
+ chain_hash: genesis_block(network).header.bitcoin_hash(),
+ short_channel_id: short_chan_id,
+ timestamp: 0,
+ flags: 0,
+ cltv_expiry_delta: 0,
+ htlc_minimum_msat: 0,
+ fee_base_msat: 0,
+ fee_proportional_millionths: 0,
+ excess_data: vec![],
+ }
+ }
+ }
+
+ #[test]
+ fn test_do_attempt_write_data() {
+ // Create 2 peers with custom TestRoutingMessageHandlers and connect them.
+ let chan_handlers = create_chan_handlers(2);
+ let mut routing_handlers: Vec<Arc<msgs::RoutingMessageHandler>> = Vec::new();
+ let mut routing_handlers_concrete: Vec<Arc<TestRoutingMessageHandler>> = Vec::new();
+ for _ in 0..2 {
+ let routing_handler = Arc::new(TestRoutingMessageHandler::new());
+ routing_handlers.push(routing_handler.clone());
+ routing_handlers_concrete.push(routing_handler.clone());
+ }
+ let peers = create_network(2, &chan_handlers, Some(&routing_handlers));
+
+ // By calling establish_connect, we trigger do_attempt_write_data between
+ // the peers. Previously this function would mistakenly enter an infinite loop
+ // when there were more channel messages available than could fit into a peer's
+ // buffer. This issue would now be detected by this test (because we use custom
+ // RoutingMessageHandlers that intentionally return more channel messages
+ // than can fit into a peer's buffer).
+ let (mut fd_a, mut fd_b) = establish_connection(&peers[0], &peers[1]);
+
+ // Make each peer to read the messages that the other peer just wrote to them.
+ peers[1].read_event(&mut fd_b, &fd_a.outbound_data.lock().unwrap().split_off(0)).unwrap();
+ peers[0].read_event(&mut fd_a, &fd_b.outbound_data.lock().unwrap().split_off(0)).unwrap();
+
+ // Check that each peer has received the expected number of channel updates and channel
+ // announcements.
+ assert_eq!(routing_handlers_concrete[0].clone().chan_upds_recvd.load(Ordering::Acquire), 100);
+ assert_eq!(routing_handlers_concrete[0].clone().chan_anns_recvd.load(Ordering::Acquire), 50);
+ assert_eq!(routing_handlers_concrete[1].clone().chan_upds_recvd.load(Ordering::Acquire), 100);
+ assert_eq!(routing_handlers_concrete[1].clone().chan_anns_recvd.load(Ordering::Acquire), 50);
+ }
}
projects / rust-lightning / blobdiff