1 //! Top level peer message handling and socket handling logic lives here.
3 //! Instead of actually servicing sockets ourselves we require that you implement the
4 //! SocketDescriptor interface and use that to receive actions which you should perform on the
5 //! socket, and call into PeerManager with bytes read from the socket. The PeerManager will then
6 //! call into the provided message handlers (probably a ChannelManager and Router) with messages
7 //! they should handle, and encoding/sending response messages.
9 use secp256k1::key::{SecretKey,PublicKey};
12 use util::ser::{Writeable, Writer, Readable};
13 use ln::peer_channel_encryptor::{PeerChannelEncryptor,NextNoiseStep};
15 use util::events::{MessageSendEvent};
16 use util::logger::Logger;
18 use std::collections::{HashMap,hash_map,HashSet,LinkedList};
19 use std::sync::{Arc, Mutex};
20 use std::sync::atomic::{AtomicUsize, Ordering};
21 use std::{cmp,error,hash,fmt};
23 /// Provides references to trait impls which handle different types of messages.
24 pub struct MessageHandler {
25 /// A message handler which handles messages specific to channels. Usually this is just a
26 /// ChannelManager object.
27 pub chan_handler: Arc<msgs::ChannelMessageHandler>,
28 /// A message handler which handles messages updating our knowledge of the network channel
29 /// graph. Usually this is just a Router object.
30 pub route_handler: Arc<msgs::RoutingMessageHandler>,
33 /// Provides an object which can be used to send data to and which uniquely identifies a connection
34 /// to a remote host. You will need to be able to generate multiple of these which meet Eq and
35 /// implement Hash to meet the PeerManager API.
37 /// For efficiency, Clone should be relatively cheap for this type.
39 /// You probably want to just extend an int and put a file descriptor in a struct and implement
40 /// send_data. Note that if you are using a higher-level net library that may close() itself, be
41 /// careful to ensure you don't have races whereby you might register a new connection with an fd
42 /// the same as a yet-to-be-disconnect_event()-ed.
43 pub trait SocketDescriptor : cmp::Eq + hash::Hash + Clone {
44 /// Attempts to send some data from the given Vec starting at the given offset to the peer.
45 /// Returns the amount of data which was sent, possibly 0 if the socket has since disconnected.
46 /// Note that in the disconnected case, a disconnect_event must still fire and further write
47 /// attempts may occur until that time.
49 /// If the returned size is smaller than data.len() - write_offset, a write_available event must
50 /// trigger the next time more data can be written. Additionally, until the a send_data event
51 /// completes fully, no further read_events should trigger on the same peer!
53 /// If a read_event on this descriptor had previously returned true (indicating that read
54 /// events should be paused to prevent DoS in the send buffer), resume_read may be set
55 /// indicating that read events on this descriptor should resume. A resume_read of false does
56 /// *not* imply that further read events should be paused.
57 fn send_data(&mut self, data: &Vec<u8>, write_offset: usize, resume_read: bool) -> usize;
58 /// Disconnect the socket pointed to by this SocketDescriptor. Once this function returns, no
59 /// more calls to write_event, read_event or disconnect_event may be made with this descriptor.
60 /// No disconnect_event should be generated as a result of this call, though obviously races
61 /// may occur whereby disconnect_socket is called after a call to disconnect_event but prior to
62 /// that event completing.
63 fn disconnect_socket(&mut self);
66 /// Error for PeerManager errors. If you get one of these, you must disconnect the socket and
67 /// generate no further read/write_events for the descriptor, only triggering a single
68 /// disconnect_event (unless it was provided in response to a new_*_connection event, in which case
69 /// no such disconnect_event must be generated and the socket be silently disconencted).
70 pub struct PeerHandleError {
71 /// Used to indicate that we probably can't make any future connections to this peer, implying
72 /// we should go ahead and force-close any channels we have with it.
73 no_connection_possible: bool,
75 impl fmt::Debug for PeerHandleError {
76 fn fmt(&self, formatter: &mut fmt::Formatter) -> Result<(), fmt::Error> {
77 formatter.write_str("Peer Sent Invalid Data")
80 impl fmt::Display for PeerHandleError {
81 fn fmt(&self, formatter: &mut fmt::Formatter) -> Result<(), fmt::Error> {
82 formatter.write_str("Peer Sent Invalid Data")
85 impl error::Error for PeerHandleError {
86 fn description(&self) -> &str {
87 "Peer Sent Invalid Data"
94 NodesSyncing(PublicKey),
98 channel_encryptor: PeerChannelEncryptor,
100 their_node_id: Option<PublicKey>,
101 their_global_features: Option<msgs::GlobalFeatures>,
102 their_local_features: Option<msgs::LocalFeatures>,
104 pending_outbound_buffer: LinkedList<Vec<u8>>,
105 pending_outbound_buffer_first_msg_offset: usize,
106 awaiting_write_event: bool,
108 pending_read_buffer: Vec<u8>,
109 pending_read_buffer_pos: usize,
110 pending_read_is_header: bool,
112 sync_status: InitSyncTracker,
116 /// Returns true if the the channel announcements/updates for the given channel should be
117 /// forwarded to this peer.
118 /// If we are sending our routing table to this peer and we have not yet sent channel
119 /// announcements/updates for the given channel_id then we will send it when we get to that
120 /// point and we shouldn't send it yet to avoid sending duplicate updates. If we've already
121 /// sent the old versions, we should send the update, and so return true here.
122 fn should_forward_channel(&self, channel_id: u64)->bool{
123 match self.sync_status {
124 InitSyncTracker::NoSyncRequested => true,
125 InitSyncTracker::ChannelsSyncing(i) => i < channel_id,
126 InitSyncTracker::NodesSyncing(_) => true,
131 struct PeerHolder<Descriptor: SocketDescriptor> {
132 peers: HashMap<Descriptor, Peer>,
133 /// Added to by do_read_event for cases where we pushed a message onto the send buffer but
134 /// didn't call do_attempt_write_data to avoid reentrancy. Cleared in process_events()
135 peers_needing_send: HashSet<Descriptor>,
136 /// Only add to this set when noise completes:
137 node_id_to_descriptor: HashMap<PublicKey, Descriptor>,
139 struct MutPeerHolder<'a, Descriptor: SocketDescriptor + 'a> {
140 peers: &'a mut HashMap<Descriptor, Peer>,
141 peers_needing_send: &'a mut HashSet<Descriptor>,
142 node_id_to_descriptor: &'a mut HashMap<PublicKey, Descriptor>,
144 impl<Descriptor: SocketDescriptor> PeerHolder<Descriptor> {
145 fn borrow_parts(&mut self) -> MutPeerHolder<Descriptor> {
147 peers: &mut self.peers,
148 peers_needing_send: &mut self.peers_needing_send,
149 node_id_to_descriptor: &mut self.node_id_to_descriptor,
154 /// A PeerManager manages a set of peers, described by their SocketDescriptor and marshalls socket
155 /// events into messages which it passes on to its MessageHandlers.
156 pub struct PeerManager<Descriptor: SocketDescriptor> {
157 message_handler: MessageHandler,
158 peers: Mutex<PeerHolder<Descriptor>>,
159 our_node_secret: SecretKey,
160 initial_syncs_sent: AtomicUsize,
164 struct VecWriter(Vec<u8>);
165 impl Writer for VecWriter {
166 fn write_all(&mut self, buf: &[u8]) -> Result<(), ::std::io::Error> {
167 self.0.extend_from_slice(buf);
170 fn size_hint(&mut self, size: usize) {
171 self.0.reserve_exact(size);
175 macro_rules! encode_msg {
176 ($msg: expr, $msg_code: expr) => {{
177 let mut msg = VecWriter(Vec::new());
178 ($msg_code as u16).write(&mut msg).unwrap();
179 $msg.write(&mut msg).unwrap();
184 //TODO: Really should do something smarter for this
185 const INITIAL_SYNCS_TO_SEND: usize = 5;
187 /// Manages and reacts to connection events. You probably want to use file descriptors as PeerIds.
188 /// PeerIds may repeat, but only after disconnect_event() has been called.
189 impl<Descriptor: SocketDescriptor> PeerManager<Descriptor> {
190 /// Constructs a new PeerManager with the given message handlers and node_id secret key
191 pub fn new(message_handler: MessageHandler, our_node_secret: SecretKey, logger: Arc<Logger>) -> PeerManager<Descriptor> {
193 message_handler: message_handler,
194 peers: Mutex::new(PeerHolder {
195 peers: HashMap::new(),
196 peers_needing_send: HashSet::new(),
197 node_id_to_descriptor: HashMap::new()
199 our_node_secret: our_node_secret,
200 initial_syncs_sent: AtomicUsize::new(0),
205 /// Get the list of node ids for peers which have completed the initial handshake.
207 /// For outbound connections, this will be the same as the their_node_id parameter passed in to
208 /// new_outbound_connection, however entries will only appear once the initial handshake has
209 /// completed and we are sure the remote peer has the private key for the given node_id.
210 pub fn get_peer_node_ids(&self) -> Vec<PublicKey> {
211 let peers = self.peers.lock().unwrap();
212 peers.peers.values().filter_map(|p| {
213 if !p.channel_encryptor.is_ready_for_encryption() || p.their_global_features.is_none() {
220 /// Indicates a new outbound connection has been established to a node with the given node_id.
221 /// Note that if an Err is returned here you MUST NOT call disconnect_event for the new
222 /// descriptor but must disconnect the connection immediately.
224 /// Returns a small number of bytes to send to the remote node (currently always 50).
226 /// Panics if descriptor is duplicative with some other descriptor which has not yet has a
227 /// disconnect_event.
228 pub fn new_outbound_connection(&self, their_node_id: PublicKey, descriptor: Descriptor) -> Result<Vec<u8>, PeerHandleError> {
229 let mut peer_encryptor = PeerChannelEncryptor::new_outbound(their_node_id.clone());
230 let res = peer_encryptor.get_act_one().to_vec();
231 let pending_read_buffer = [0; 50].to_vec(); // Noise act two is 50 bytes
233 let mut peers = self.peers.lock().unwrap();
234 if peers.peers.insert(descriptor, Peer {
235 channel_encryptor: peer_encryptor,
238 their_global_features: None,
239 their_local_features: None,
241 pending_outbound_buffer: LinkedList::new(),
242 pending_outbound_buffer_first_msg_offset: 0,
243 awaiting_write_event: false,
245 pending_read_buffer: pending_read_buffer,
246 pending_read_buffer_pos: 0,
247 pending_read_is_header: false,
249 sync_status: InitSyncTracker::NoSyncRequested,
251 panic!("PeerManager driver duplicated descriptors!");
256 /// Indicates a new inbound connection has been established.
258 /// May refuse the connection by returning an Err, but will never write bytes to the remote end
259 /// (outbound connector always speaks first). Note that if an Err is returned here you MUST NOT
260 /// call disconnect_event for the new descriptor but must disconnect the connection
263 /// Panics if descriptor is duplicative with some other descriptor which has not yet has a
264 /// disconnect_event.
265 pub fn new_inbound_connection(&self, descriptor: Descriptor) -> Result<(), PeerHandleError> {
266 let peer_encryptor = PeerChannelEncryptor::new_inbound(&self.our_node_secret);
267 let pending_read_buffer = [0; 50].to_vec(); // Noise act one is 50 bytes
269 let mut peers = self.peers.lock().unwrap();
270 if peers.peers.insert(descriptor, Peer {
271 channel_encryptor: peer_encryptor,
274 their_global_features: None,
275 their_local_features: None,
277 pending_outbound_buffer: LinkedList::new(),
278 pending_outbound_buffer_first_msg_offset: 0,
279 awaiting_write_event: false,
281 pending_read_buffer: pending_read_buffer,
282 pending_read_buffer_pos: 0,
283 pending_read_is_header: false,
285 sync_status: InitSyncTracker::NoSyncRequested,
287 panic!("PeerManager driver duplicated descriptors!");
292 fn do_attempt_write_data(&self, descriptor: &mut Descriptor, peer: &mut Peer) {
293 macro_rules! encode_and_send_msg {
294 ($msg: expr, $msg_code: expr) => {
296 log_trace!(self, "Encoding and sending sync update message of type {} to {}", $msg_code, log_pubkey!(peer.their_node_id.unwrap()));
297 peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!($msg, $msg_code)[..]));
301 const MSG_BUFF_SIZE: usize = 10;
302 while !peer.awaiting_write_event {
303 if peer.pending_outbound_buffer.len() < MSG_BUFF_SIZE {
304 match peer.sync_status {
305 InitSyncTracker::NoSyncRequested => {},
306 InitSyncTracker::ChannelsSyncing(c) if c < 0xffff_ffff_ffff_ffff => {
307 let steps = ((MSG_BUFF_SIZE - peer.pending_outbound_buffer.len() + 2) / 3) as u8;
308 let all_messages = self.message_handler.route_handler.get_next_channel_announcements(0, steps);
309 for &(ref announce, ref update_a, ref update_b) in all_messages.iter() {
310 encode_and_send_msg!(announce, 256);
311 encode_and_send_msg!(update_a, 258);
312 encode_and_send_msg!(update_b, 258);
313 peer.sync_status = InitSyncTracker::ChannelsSyncing(announce.contents.short_channel_id + 1);
315 if all_messages.is_empty() || all_messages.len() != steps as usize {
316 peer.sync_status = InitSyncTracker::ChannelsSyncing(0xffff_ffff_ffff_ffff);
319 InitSyncTracker::ChannelsSyncing(c) if c == 0xffff_ffff_ffff_ffff => {
320 let steps = (MSG_BUFF_SIZE - peer.pending_outbound_buffer.len()) as u8;
321 let all_messages = self.message_handler.route_handler.get_next_node_announcements(None, steps);
322 for msg in all_messages.iter() {
323 encode_and_send_msg!(msg, 256);
324 peer.sync_status = InitSyncTracker::NodesSyncing(msg.contents.node_id);
326 if all_messages.is_empty() || all_messages.len() != steps as usize {
327 peer.sync_status = InitSyncTracker::NoSyncRequested;
330 InitSyncTracker::ChannelsSyncing(_) => unreachable!(),
331 InitSyncTracker::NodesSyncing(key) => {
332 let steps = (MSG_BUFF_SIZE - peer.pending_outbound_buffer.len()) as u8;
333 let all_messages = self.message_handler.route_handler.get_next_node_announcements(Some(&key), steps);
334 for msg in all_messages.iter() {
335 encode_and_send_msg!(msg, 256);
336 peer.sync_status = InitSyncTracker::NodesSyncing(msg.contents.node_id);
338 if all_messages.is_empty() || all_messages.len() != steps as usize {
339 peer.sync_status = InitSyncTracker::NoSyncRequested;
346 let next_buff = match peer.pending_outbound_buffer.front() {
351 let should_be_reading = peer.pending_outbound_buffer.len() < MSG_BUFF_SIZE;
352 let data_sent = descriptor.send_data(next_buff, peer.pending_outbound_buffer_first_msg_offset, should_be_reading);
353 peer.pending_outbound_buffer_first_msg_offset += data_sent;
354 if peer.pending_outbound_buffer_first_msg_offset == next_buff.len() { true } else { false }
356 peer.pending_outbound_buffer_first_msg_offset = 0;
357 peer.pending_outbound_buffer.pop_front();
359 peer.awaiting_write_event = true;
364 /// Indicates that there is room to write data to the given socket descriptor.
366 /// May return an Err to indicate that the connection should be closed.
368 /// Will most likely call send_data on the descriptor passed in (or the descriptor handed into
369 /// new_*\_connection) before returning. Thus, be very careful with reentrancy issues! The
370 /// invariants around calling write_event in case a write did not fully complete must still
371 /// hold - be ready to call write_event again if a write call generated here isn't sufficient!
372 /// Panics if the descriptor was not previously registered in a new_\*_connection event.
373 pub fn write_event(&self, descriptor: &mut Descriptor) -> Result<(), PeerHandleError> {
374 let mut peers = self.peers.lock().unwrap();
375 match peers.peers.get_mut(descriptor) {
376 None => panic!("Descriptor for write_event is not already known to PeerManager"),
378 peer.awaiting_write_event = false;
379 self.do_attempt_write_data(descriptor, peer);
385 /// Indicates that data was read from the given socket descriptor.
387 /// May return an Err to indicate that the connection should be closed.
389 /// Will *not* call back into send_data on any descriptors to avoid reentrancy complexity.
390 /// Thus, however, you almost certainly want to call process_events() after any read_event to
391 /// generate send_data calls to handle responses.
393 /// If Ok(true) is returned, further read_events should not be triggered until a write_event on
394 /// this file descriptor has resume_read set (preventing DoS issues in the send buffer).
396 /// Panics if the descriptor was not previously registered in a new_*_connection event.
397 pub fn read_event(&self, peer_descriptor: &mut Descriptor, data: Vec<u8>) -> Result<bool, PeerHandleError> {
398 match self.do_read_event(peer_descriptor, data) {
401 self.disconnect_event_internal(peer_descriptor, e.no_connection_possible);
407 fn do_read_event(&self, peer_descriptor: &mut Descriptor, data: Vec<u8>) -> Result<bool, PeerHandleError> {
409 let mut peers_lock = self.peers.lock().unwrap();
410 let peers = peers_lock.borrow_parts();
411 let pause_read = match peers.peers.get_mut(peer_descriptor) {
412 None => panic!("Descriptor for read_event is not already known to PeerManager"),
414 assert!(peer.pending_read_buffer.len() > 0);
415 assert!(peer.pending_read_buffer.len() > peer.pending_read_buffer_pos);
417 let mut read_pos = 0;
418 while read_pos < data.len() {
420 let data_to_copy = cmp::min(peer.pending_read_buffer.len() - peer.pending_read_buffer_pos, data.len() - read_pos);
421 peer.pending_read_buffer[peer.pending_read_buffer_pos..peer.pending_read_buffer_pos + data_to_copy].copy_from_slice(&data[read_pos..read_pos + data_to_copy]);
422 read_pos += data_to_copy;
423 peer.pending_read_buffer_pos += data_to_copy;
426 if peer.pending_read_buffer_pos == peer.pending_read_buffer.len() {
427 peer.pending_read_buffer_pos = 0;
429 macro_rules! encode_and_send_msg {
430 ($msg: expr, $msg_code: expr) => {
432 log_trace!(self, "Encoding and sending message of type {} to {}", $msg_code, log_pubkey!(peer.their_node_id.unwrap()));
433 peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!($msg, $msg_code)[..]));
434 peers.peers_needing_send.insert(peer_descriptor.clone());
439 macro_rules! try_potential_handleerror {
444 if let Some(action) = e.action {
446 msgs::ErrorAction::DisconnectPeer { msg: _ } => {
447 //TODO: Try to push msg
448 log_trace!(self, "Got Err handling message, disconnecting peer because {}", e.err);
449 return Err(PeerHandleError{ no_connection_possible: false });
451 msgs::ErrorAction::IgnoreError => {
452 log_trace!(self, "Got Err handling message, ignoring because {}", e.err);
455 msgs::ErrorAction::SendErrorMessage { msg } => {
456 log_trace!(self, "Got Err handling message, sending Error message because {}", e.err);
457 encode_and_send_msg!(msg, 17);
462 log_debug!(self, "Got Err handling message, action not yet filled in: {}", e.err);
463 return Err(PeerHandleError{ no_connection_possible: false });
470 macro_rules! try_potential_decodeerror {
476 msgs::DecodeError::UnknownVersion => return Err(PeerHandleError{ no_connection_possible: false }),
477 msgs::DecodeError::UnknownRequiredFeature => {
478 log_debug!(self, "Got a channel/node announcement with an known required feature flag, you may want to udpate!");
481 msgs::DecodeError::InvalidValue => {
482 log_debug!(self, "Got an invalid value while deserializing message");
483 return Err(PeerHandleError{ no_connection_possible: false });
485 msgs::DecodeError::ShortRead => {
486 log_debug!(self, "Deserialization failed due to shortness of message");
487 return Err(PeerHandleError{ no_connection_possible: false });
489 msgs::DecodeError::ExtraAddressesPerType => {
490 log_debug!(self, "Error decoding message, ignoring due to lnd spec incompatibility. See https://github.com/lightningnetwork/lnd/issues/1407");
493 msgs::DecodeError::BadLengthDescriptor => return Err(PeerHandleError{ no_connection_possible: false }),
494 msgs::DecodeError::Io(_) => return Err(PeerHandleError{ no_connection_possible: false }),
501 macro_rules! insert_node_id {
503 match peers.node_id_to_descriptor.entry(peer.their_node_id.unwrap()) {
504 hash_map::Entry::Occupied(_) => {
505 log_trace!(self, "Got second connection with {}, closing", log_pubkey!(peer.their_node_id.unwrap()));
506 peer.their_node_id = None; // Unset so that we don't generate a peer_disconnected event
507 return Err(PeerHandleError{ no_connection_possible: false })
509 hash_map::Entry::Vacant(entry) => {
510 log_trace!(self, "Finished noise handshake for connection with {}", log_pubkey!(peer.their_node_id.unwrap()));
511 entry.insert(peer_descriptor.clone())
517 let next_step = peer.channel_encryptor.get_noise_step();
519 NextNoiseStep::ActOne => {
520 let act_two = try_potential_handleerror!(peer.channel_encryptor.process_act_one_with_key(&peer.pending_read_buffer[..], &self.our_node_secret)).to_vec();
521 peer.pending_outbound_buffer.push_back(act_two);
522 peer.pending_read_buffer = [0; 66].to_vec(); // act three is 66 bytes long
524 NextNoiseStep::ActTwo => {
525 let (act_three, their_node_id) = try_potential_handleerror!(peer.channel_encryptor.process_act_two(&peer.pending_read_buffer[..], &self.our_node_secret));
526 peer.pending_outbound_buffer.push_back(act_three.to_vec());
527 peer.pending_read_buffer = [0; 18].to_vec(); // Message length header is 18 bytes
528 peer.pending_read_is_header = true;
530 peer.their_node_id = Some(their_node_id);
532 let mut local_features = msgs::LocalFeatures::new();
533 if self.initial_syncs_sent.load(Ordering::Acquire) < INITIAL_SYNCS_TO_SEND {
534 self.initial_syncs_sent.fetch_add(1, Ordering::AcqRel);
535 local_features.set_initial_routing_sync();
537 encode_and_send_msg!(msgs::Init {
538 global_features: msgs::GlobalFeatures::new(),
542 NextNoiseStep::ActThree => {
543 let their_node_id = try_potential_handleerror!(peer.channel_encryptor.process_act_three(&peer.pending_read_buffer[..]));
544 peer.pending_read_buffer = [0; 18].to_vec(); // Message length header is 18 bytes
545 peer.pending_read_is_header = true;
546 peer.their_node_id = Some(their_node_id);
549 NextNoiseStep::NoiseComplete => {
550 if peer.pending_read_is_header {
551 let msg_len = try_potential_handleerror!(peer.channel_encryptor.decrypt_length_header(&peer.pending_read_buffer[..]));
552 peer.pending_read_buffer = Vec::with_capacity(msg_len as usize + 16);
553 peer.pending_read_buffer.resize(msg_len as usize + 16, 0);
554 if msg_len < 2 { // Need at least the message type tag
555 return Err(PeerHandleError{ no_connection_possible: false });
557 peer.pending_read_is_header = false;
559 let msg_data = try_potential_handleerror!(peer.channel_encryptor.decrypt_message(&peer.pending_read_buffer[..]));
560 assert!(msg_data.len() >= 2);
563 peer.pending_read_buffer = [0; 18].to_vec();
564 peer.pending_read_is_header = true;
566 let msg_type = byte_utils::slice_to_be16(&msg_data[0..2]);
567 log_trace!(self, "Received message of type {} from {}", msg_type, log_pubkey!(peer.their_node_id.unwrap()));
568 if msg_type != 16 && peer.their_global_features.is_none() {
569 // Need an init message as first message
570 log_trace!(self, "Peer {} sent non-Init first message", log_pubkey!(peer.their_node_id.unwrap()));
571 return Err(PeerHandleError{ no_connection_possible: false });
573 let mut reader = ::std::io::Cursor::new(&msg_data[2..]);
575 // Connection control:
577 let msg = try_potential_decodeerror!(msgs::Init::read(&mut reader));
578 if msg.global_features.requires_unknown_bits() {
579 log_info!(self, "Peer global features required unknown version bits");
580 return Err(PeerHandleError{ no_connection_possible: true });
582 if msg.local_features.requires_unknown_bits() {
583 log_info!(self, "Peer local features required unknown version bits");
584 return Err(PeerHandleError{ no_connection_possible: true });
586 if msg.local_features.requires_data_loss_protect() {
587 log_info!(self, "Peer local features required data_loss_protect");
588 return Err(PeerHandleError{ no_connection_possible: true });
590 if msg.local_features.requires_upfront_shutdown_script() {
591 log_info!(self, "Peer local features required upfront_shutdown_script");
592 return Err(PeerHandleError{ no_connection_possible: true });
594 if peer.their_global_features.is_some() {
595 return Err(PeerHandleError{ no_connection_possible: false });
598 log_info!(self, "Received peer Init message: data_loss_protect: {}, initial_routing_sync: {}, upfront_shutdown_script: {}, unkown local flags: {}, unknown global flags: {}",
599 if msg.local_features.supports_data_loss_protect() { "supported" } else { "not supported"},
600 if msg.local_features.initial_routing_sync() { "requested" } else { "not requested" },
601 if msg.local_features.supports_upfront_shutdown_script() { "supported" } else { "not supported"},
602 if msg.local_features.supports_unknown_bits() { "present" } else { "none" },
603 if msg.global_features.supports_unknown_bits() { "present" } else { "none" });
605 if msg.local_features.initial_routing_sync() {
606 peer.sync_status = InitSyncTracker::ChannelsSyncing(0);
607 peers.peers_needing_send.insert(peer_descriptor.clone());
609 peer.their_global_features = Some(msg.global_features);
610 peer.their_local_features = Some(msg.local_features);
613 let mut local_features = msgs::LocalFeatures::new();
614 if self.initial_syncs_sent.load(Ordering::Acquire) < INITIAL_SYNCS_TO_SEND {
615 self.initial_syncs_sent.fetch_add(1, Ordering::AcqRel);
616 local_features.set_initial_routing_sync();
619 encode_and_send_msg!(msgs::Init {
620 global_features: msgs::GlobalFeatures::new(),
625 self.message_handler.chan_handler.peer_connected(&peer.their_node_id.unwrap());
628 let msg = try_potential_decodeerror!(msgs::ErrorMessage::read(&mut reader));
629 let mut data_is_printable = true;
630 for b in msg.data.bytes() {
631 if b < 32 || b > 126 {
632 data_is_printable = false;
637 if data_is_printable {
638 log_debug!(self, "Got Err message from {}: {}", log_pubkey!(peer.their_node_id.unwrap()), msg.data);
640 log_debug!(self, "Got Err message from {} with non-ASCII error message", log_pubkey!(peer.their_node_id.unwrap()));
642 self.message_handler.chan_handler.handle_error(&peer.their_node_id.unwrap(), &msg);
643 if msg.channel_id == [0; 32] {
644 return Err(PeerHandleError{ no_connection_possible: true });
649 let msg = try_potential_decodeerror!(msgs::Ping::read(&mut reader));
650 if msg.ponglen < 65532 {
651 let resp = msgs::Pong { byteslen: msg.ponglen };
652 encode_and_send_msg!(resp, 19);
656 try_potential_decodeerror!(msgs::Pong::read(&mut reader));
661 let msg = try_potential_decodeerror!(msgs::OpenChannel::read(&mut reader));
662 try_potential_handleerror!(self.message_handler.chan_handler.handle_open_channel(&peer.their_node_id.unwrap(), &msg));
665 let msg = try_potential_decodeerror!(msgs::AcceptChannel::read(&mut reader));
666 try_potential_handleerror!(self.message_handler.chan_handler.handle_accept_channel(&peer.their_node_id.unwrap(), &msg));
670 let msg = try_potential_decodeerror!(msgs::FundingCreated::read(&mut reader));
671 try_potential_handleerror!(self.message_handler.chan_handler.handle_funding_created(&peer.their_node_id.unwrap(), &msg));
674 let msg = try_potential_decodeerror!(msgs::FundingSigned::read(&mut reader));
675 try_potential_handleerror!(self.message_handler.chan_handler.handle_funding_signed(&peer.their_node_id.unwrap(), &msg));
678 let msg = try_potential_decodeerror!(msgs::FundingLocked::read(&mut reader));
679 try_potential_handleerror!(self.message_handler.chan_handler.handle_funding_locked(&peer.their_node_id.unwrap(), &msg));
683 let msg = try_potential_decodeerror!(msgs::Shutdown::read(&mut reader));
684 try_potential_handleerror!(self.message_handler.chan_handler.handle_shutdown(&peer.their_node_id.unwrap(), &msg));
687 let msg = try_potential_decodeerror!(msgs::ClosingSigned::read(&mut reader));
688 try_potential_handleerror!(self.message_handler.chan_handler.handle_closing_signed(&peer.their_node_id.unwrap(), &msg));
692 let msg = try_potential_decodeerror!(msgs::UpdateAddHTLC::read(&mut reader));
693 try_potential_handleerror!(self.message_handler.chan_handler.handle_update_add_htlc(&peer.their_node_id.unwrap(), &msg));
696 let msg = try_potential_decodeerror!(msgs::UpdateFulfillHTLC::read(&mut reader));
697 try_potential_handleerror!(self.message_handler.chan_handler.handle_update_fulfill_htlc(&peer.their_node_id.unwrap(), &msg));
700 let msg = try_potential_decodeerror!(msgs::UpdateFailHTLC::read(&mut reader));
701 try_potential_handleerror!(self.message_handler.chan_handler.handle_update_fail_htlc(&peer.their_node_id.unwrap(), &msg));
704 let msg = try_potential_decodeerror!(msgs::UpdateFailMalformedHTLC::read(&mut reader));
705 try_potential_handleerror!(self.message_handler.chan_handler.handle_update_fail_malformed_htlc(&peer.their_node_id.unwrap(), &msg));
709 let msg = try_potential_decodeerror!(msgs::CommitmentSigned::read(&mut reader));
710 try_potential_handleerror!(self.message_handler.chan_handler.handle_commitment_signed(&peer.their_node_id.unwrap(), &msg));
713 let msg = try_potential_decodeerror!(msgs::RevokeAndACK::read(&mut reader));
714 try_potential_handleerror!(self.message_handler.chan_handler.handle_revoke_and_ack(&peer.their_node_id.unwrap(), &msg));
717 let msg = try_potential_decodeerror!(msgs::UpdateFee::read(&mut reader));
718 try_potential_handleerror!(self.message_handler.chan_handler.handle_update_fee(&peer.their_node_id.unwrap(), &msg));
721 let msg = try_potential_decodeerror!(msgs::ChannelReestablish::read(&mut reader));
722 try_potential_handleerror!(self.message_handler.chan_handler.handle_channel_reestablish(&peer.their_node_id.unwrap(), &msg));
727 let msg = try_potential_decodeerror!(msgs::AnnouncementSignatures::read(&mut reader));
728 try_potential_handleerror!(self.message_handler.chan_handler.handle_announcement_signatures(&peer.their_node_id.unwrap(), &msg));
731 let msg = try_potential_decodeerror!(msgs::ChannelAnnouncement::read(&mut reader));
732 let should_forward = try_potential_handleerror!(self.message_handler.route_handler.handle_channel_announcement(&msg));
735 // TODO: forward msg along to all our other peers!
739 let msg = try_potential_decodeerror!(msgs::NodeAnnouncement::read(&mut reader));
740 let should_forward = try_potential_handleerror!(self.message_handler.route_handler.handle_node_announcement(&msg));
743 // TODO: forward msg along to all our other peers!
747 let msg = try_potential_decodeerror!(msgs::ChannelUpdate::read(&mut reader));
748 let should_forward = try_potential_handleerror!(self.message_handler.route_handler.handle_channel_update(&msg));
751 // TODO: forward msg along to all our other peers!
755 if (msg_type & 1) == 0 {
756 return Err(PeerHandleError{ no_connection_possible: true });
766 self.do_attempt_write_data(peer_descriptor, peer);
768 peer.pending_outbound_buffer.len() > 10 // pause_read
778 /// Checks for any events generated by our handlers and processes them. Includes sending most
779 /// response messages as well as messages generated by calls to handler functions directly (eg
780 /// functions like ChannelManager::process_pending_htlc_forward or send_payment).
781 pub fn process_events(&self) {
783 // TODO: There are some DoS attacks here where you can flood someone's outbound send
784 // buffer by doing things like announcing channels on another node. We should be willing to
785 // drop optional-ish messages when send buffers get full!
787 let mut events_generated = self.message_handler.chan_handler.get_and_clear_pending_msg_events();
788 let mut peers_lock = self.peers.lock().unwrap();
789 let peers = peers_lock.borrow_parts();
790 for event in events_generated.drain(..) {
791 macro_rules! get_peer_for_forwarding {
792 ($node_id: expr, $handle_no_such_peer: block) => {
794 let descriptor = match peers.node_id_to_descriptor.get($node_id) {
795 Some(descriptor) => descriptor.clone(),
797 $handle_no_such_peer;
801 match peers.peers.get_mut(&descriptor) {
803 if peer.their_global_features.is_none() {
804 $handle_no_such_peer;
809 None => panic!("Inconsistent peers set state!"),
815 MessageSendEvent::SendAcceptChannel { ref node_id, ref msg } => {
816 log_trace!(self, "Handling SendAcceptChannel event in peer_handler for node {} for channel {}",
817 log_pubkey!(node_id),
818 log_bytes!(msg.temporary_channel_id));
819 let (mut descriptor, peer) = get_peer_for_forwarding!(node_id, {
820 //TODO: Drop the pending channel? (or just let it timeout, but that sucks)
822 peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(msg, 33)));
823 self.do_attempt_write_data(&mut descriptor, peer);
825 MessageSendEvent::SendOpenChannel { ref node_id, ref msg } => {
826 log_trace!(self, "Handling SendOpenChannel event in peer_handler for node {} for channel {}",
827 log_pubkey!(node_id),
828 log_bytes!(msg.temporary_channel_id));
829 let (mut descriptor, peer) = get_peer_for_forwarding!(node_id, {
830 //TODO: Drop the pending channel? (or just let it timeout, but that sucks)
832 peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(msg, 32)));
833 self.do_attempt_write_data(&mut descriptor, peer);
835 MessageSendEvent::SendFundingCreated { ref node_id, ref msg } => {
836 log_trace!(self, "Handling SendFundingCreated event in peer_handler for node {} for channel {} (which becomes {})",
837 log_pubkey!(node_id),
838 log_bytes!(msg.temporary_channel_id),
839 log_funding_channel_id!(msg.funding_txid, msg.funding_output_index));
840 let (mut descriptor, peer) = get_peer_for_forwarding!(node_id, {
841 //TODO: generate a DiscardFunding event indicating to the wallet that
842 //they should just throw away this funding transaction
844 peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(msg, 34)));
845 self.do_attempt_write_data(&mut descriptor, peer);
847 MessageSendEvent::SendFundingSigned { ref node_id, ref msg } => {
848 log_trace!(self, "Handling SendFundingSigned event in peer_handler for node {} for channel {}",
849 log_pubkey!(node_id),
850 log_bytes!(msg.channel_id));
851 let (mut descriptor, peer) = get_peer_for_forwarding!(node_id, {
852 //TODO: generate a DiscardFunding event indicating to the wallet that
853 //they should just throw away this funding transaction
855 peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(msg, 35)));
856 self.do_attempt_write_data(&mut descriptor, peer);
858 MessageSendEvent::SendFundingLocked { ref node_id, ref msg } => {
859 log_trace!(self, "Handling SendFundingLocked event in peer_handler for node {} for channel {}",
860 log_pubkey!(node_id),
861 log_bytes!(msg.channel_id));
862 let (mut descriptor, peer) = get_peer_for_forwarding!(node_id, {
863 //TODO: Do whatever we're gonna do for handling dropped messages
865 peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(msg, 36)));
866 self.do_attempt_write_data(&mut descriptor, peer);
868 MessageSendEvent::SendAnnouncementSignatures { ref node_id, ref msg } => {
869 log_trace!(self, "Handling SendAnnouncementSignatures event in peer_handler for node {} for channel {})",
870 log_pubkey!(node_id),
871 log_bytes!(msg.channel_id));
872 let (mut descriptor, peer) = get_peer_for_forwarding!(node_id, {
873 //TODO: generate a DiscardFunding event indicating to the wallet that
874 //they should just throw away this funding transaction
876 peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(msg, 259)));
877 self.do_attempt_write_data(&mut descriptor, peer);
879 MessageSendEvent::UpdateHTLCs { ref node_id, updates: msgs::CommitmentUpdate { ref update_add_htlcs, ref update_fulfill_htlcs, ref update_fail_htlcs, ref update_fail_malformed_htlcs, ref update_fee, ref commitment_signed } } => {
880 log_trace!(self, "Handling UpdateHTLCs event in peer_handler for node {} with {} adds, {} fulfills, {} fails for channel {}",
881 log_pubkey!(node_id),
882 update_add_htlcs.len(),
883 update_fulfill_htlcs.len(),
884 update_fail_htlcs.len(),
885 log_bytes!(commitment_signed.channel_id));
886 let (mut descriptor, peer) = get_peer_for_forwarding!(node_id, {
887 //TODO: Do whatever we're gonna do for handling dropped messages
889 for msg in update_add_htlcs {
890 peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(msg, 128)));
892 for msg in update_fulfill_htlcs {
893 peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(msg, 130)));
895 for msg in update_fail_htlcs {
896 peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(msg, 131)));
898 for msg in update_fail_malformed_htlcs {
899 peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(msg, 135)));
901 if let &Some(ref msg) = update_fee {
902 peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(msg, 134)));
904 peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(commitment_signed, 132)));
905 self.do_attempt_write_data(&mut descriptor, peer);
907 MessageSendEvent::SendRevokeAndACK { ref node_id, ref msg } => {
908 log_trace!(self, "Handling SendRevokeAndACK event in peer_handler for node {} for channel {}",
909 log_pubkey!(node_id),
910 log_bytes!(msg.channel_id));
911 let (mut descriptor, peer) = get_peer_for_forwarding!(node_id, {
912 //TODO: Do whatever we're gonna do for handling dropped messages
914 peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(msg, 133)));
915 self.do_attempt_write_data(&mut descriptor, peer);
917 MessageSendEvent::SendClosingSigned { ref node_id, ref msg } => {
918 log_trace!(self, "Handling SendClosingSigned event in peer_handler for node {} for channel {}",
919 log_pubkey!(node_id),
920 log_bytes!(msg.channel_id));
921 let (mut descriptor, peer) = get_peer_for_forwarding!(node_id, {
922 //TODO: Do whatever we're gonna do for handling dropped messages
924 peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(msg, 39)));
925 self.do_attempt_write_data(&mut descriptor, peer);
927 MessageSendEvent::SendShutdown { ref node_id, ref msg } => {
928 log_trace!(self, "Handling Shutdown event in peer_handler for node {} for channel {}",
929 log_pubkey!(node_id),
930 log_bytes!(msg.channel_id));
931 let (mut descriptor, peer) = get_peer_for_forwarding!(node_id, {
932 //TODO: Do whatever we're gonna do for handling dropped messages
934 peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(msg, 38)));
935 self.do_attempt_write_data(&mut descriptor, peer);
937 MessageSendEvent::SendChannelReestablish { ref node_id, ref msg } => {
938 log_trace!(self, "Handling SendChannelReestablish event in peer_handler for node {} for channel {}",
939 log_pubkey!(node_id),
940 log_bytes!(msg.channel_id));
941 let (mut descriptor, peer) = get_peer_for_forwarding!(node_id, {
942 //TODO: Do whatever we're gonna do for handling dropped messages
944 peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(msg, 136)));
945 self.do_attempt_write_data(&mut descriptor, peer);
947 MessageSendEvent::BroadcastChannelAnnouncement { ref msg, ref update_msg } => {
948 log_trace!(self, "Handling BroadcastChannelAnnouncement event in peer_handler for short channel id {}", msg.contents.short_channel_id);
949 if self.message_handler.route_handler.handle_channel_announcement(msg).is_ok() && self.message_handler.route_handler.handle_channel_update(update_msg).is_ok() {
950 let encoded_msg = encode_msg!(msg, 256);
951 let encoded_update_msg = encode_msg!(update_msg, 258);
953 for (ref descriptor, ref mut peer) in peers.peers.iter_mut() {
954 if !peer.channel_encryptor.is_ready_for_encryption() || peer.their_global_features.is_none() ||
955 !peer.should_forward_channel(msg.contents.short_channel_id) {
958 match peer.their_node_id {
960 Some(their_node_id) => {
961 if their_node_id == msg.contents.node_id_1 || their_node_id == msg.contents.node_id_2 {
966 peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encoded_msg[..]));
967 peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encoded_update_msg[..]));
968 self.do_attempt_write_data(&mut (*descriptor).clone(), peer);
972 MessageSendEvent::BroadcastChannelUpdate { ref msg } => {
973 log_trace!(self, "Handling BroadcastChannelUpdate event in peer_handler for short channel id {}", msg.contents.short_channel_id);
974 if self.message_handler.route_handler.handle_channel_update(msg).is_ok() {
975 let encoded_msg = encode_msg!(msg, 258);
977 for (ref descriptor, ref mut peer) in peers.peers.iter_mut() {
978 if !peer.channel_encryptor.is_ready_for_encryption() || peer.their_global_features.is_none() ||
979 !peer.should_forward_channel(msg.contents.short_channel_id) {
982 peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encoded_msg[..]));
983 self.do_attempt_write_data(&mut (*descriptor).clone(), peer);
987 MessageSendEvent::PaymentFailureNetworkUpdate { ref update } => {
988 self.message_handler.route_handler.handle_htlc_fail_channel_update(update);
990 MessageSendEvent::HandleError { ref node_id, ref action } => {
991 if let Some(ref action) = *action {
993 msgs::ErrorAction::DisconnectPeer { ref msg } => {
994 if let Some(mut descriptor) = peers.node_id_to_descriptor.remove(node_id) {
995 peers.peers_needing_send.remove(&descriptor);
996 if let Some(mut peer) = peers.peers.remove(&descriptor) {
997 if let Some(ref msg) = *msg {
998 log_trace!(self, "Handling DisconnectPeer HandleError event in peer_handler for node {} with message {}",
999 log_pubkey!(node_id),
1001 peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(msg, 17)));
1002 // This isn't guaranteed to work, but if there is enough free
1003 // room in the send buffer, put the error message there...
1004 self.do_attempt_write_data(&mut descriptor, &mut peer);
1006 log_trace!(self, "Handling DisconnectPeer HandleError event in peer_handler for node {} with no message", log_pubkey!(node_id));
1009 descriptor.disconnect_socket();
1010 self.message_handler.chan_handler.peer_disconnected(&node_id, false);
1013 msgs::ErrorAction::IgnoreError => {},
1014 msgs::ErrorAction::SendErrorMessage { ref msg } => {
1015 log_trace!(self, "Handling SendErrorMessage HandleError event in peer_handler for node {} with message {}",
1016 log_pubkey!(node_id),
1018 let (mut descriptor, peer) = get_peer_for_forwarding!(node_id, {
1019 //TODO: Do whatever we're gonna do for handling dropped messages
1021 peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(msg, 17)));
1022 self.do_attempt_write_data(&mut descriptor, peer);
1026 log_error!(self, "Got no-action HandleError Event in peer_handler for node {}, no such events should ever be generated!", log_pubkey!(node_id));
1032 for mut descriptor in peers.peers_needing_send.drain() {
1033 match peers.peers.get_mut(&descriptor) {
1034 Some(peer) => self.do_attempt_write_data(&mut descriptor, peer),
1035 None => panic!("Inconsistent peers set state!"),
1041 /// Indicates that the given socket descriptor's connection is now closed.
1043 /// This must be called even if a PeerHandleError was given for a read_event or write_event,
1044 /// but must NOT be called if a PeerHandleError was provided out of a new_\*\_connection event!
1046 /// Panics if the descriptor was not previously registered in a successful new_*_connection event.
1047 pub fn disconnect_event(&self, descriptor: &Descriptor) {
1048 self.disconnect_event_internal(descriptor, false);
1051 fn disconnect_event_internal(&self, descriptor: &Descriptor, no_connection_possible: bool) {
1052 let mut peers = self.peers.lock().unwrap();
1053 peers.peers_needing_send.remove(descriptor);
1054 let peer_option = peers.peers.remove(descriptor);
1056 None => panic!("Descriptor for disconnect_event is not already known to PeerManager"),
1058 match peer.their_node_id {
1060 peers.node_id_to_descriptor.remove(&node_id);
1061 self.message_handler.chan_handler.peer_disconnected(&node_id, no_connection_possible);
1072 use ln::peer_handler::{PeerManager, MessageHandler, SocketDescriptor};
1075 use util::test_utils;
1076 use util::logger::Logger;
1078 use secp256k1::Secp256k1;
1079 use secp256k1::key::{SecretKey, PublicKey};
1081 use rand::{thread_rng, Rng};
1083 use std::sync::{Arc};
1085 #[derive(PartialEq, Eq, Clone, Hash)]
1086 struct FileDescriptor {
1090 impl SocketDescriptor for FileDescriptor {
1091 fn send_data(&mut self, data: &Vec<u8>, write_offset: usize, _resume_read: bool) -> usize {
1092 assert!(write_offset < data.len());
1093 data.len() - write_offset
1096 fn disconnect_socket(&mut self) {}
1099 fn create_network(peer_count: usize) -> Vec<PeerManager<FileDescriptor>> {
1100 let secp_ctx = Secp256k1::new();
1101 let mut peers = Vec::new();
1102 let mut rng = thread_rng();
1103 let logger : Arc<Logger> = Arc::new(test_utils::TestLogger::new());
1105 for _ in 0..peer_count {
1106 let chan_handler = test_utils::TestChannelMessageHandler::new();
1107 let router = test_utils::TestRoutingMessageHandler::new();
1109 let mut key_slice = [0;32];
1110 rng.fill_bytes(&mut key_slice);
1111 SecretKey::from_slice(&secp_ctx, &key_slice).unwrap()
1113 let msg_handler = MessageHandler { chan_handler: Arc::new(chan_handler), route_handler: Arc::new(router) };
1114 let peer = PeerManager::new(msg_handler, node_id, Arc::clone(&logger));
1121 fn establish_connection(peer_a: &PeerManager<FileDescriptor>, peer_b: &PeerManager<FileDescriptor>) {
1122 let secp_ctx = Secp256k1::new();
1123 let their_id = PublicKey::from_secret_key(&secp_ctx, &peer_b.our_node_secret);
1124 let fd = FileDescriptor { fd: 1};
1125 peer_a.new_inbound_connection(fd.clone()).unwrap();
1126 peer_a.peers.lock().unwrap().node_id_to_descriptor.insert(their_id, fd.clone());
1130 fn test_disconnect_peer() {
1131 // Simple test which builds a network of PeerManager, connects and brings them to NoiseState::Finished and
1132 // push an DisconnectPeer event to remove the node flagged by id
1133 let mut peers = create_network(2);
1134 establish_connection(&peers[0], &peers[1]);
1135 assert_eq!(peers[0].peers.lock().unwrap().peers.len(), 1);
1137 let secp_ctx = Secp256k1::new();
1138 let their_id = PublicKey::from_secret_key(&secp_ctx, &peers[1].our_node_secret);
1140 let chan_handler = test_utils::TestChannelMessageHandler::new();
1141 chan_handler.pending_events.lock().unwrap().push(events::MessageSendEvent::HandleError {
1143 action: Some(msgs::ErrorAction::DisconnectPeer { msg: None }),
1145 assert_eq!(chan_handler.pending_events.lock().unwrap().len(), 1);
1146 peers[0].message_handler.chan_handler = Arc::new(chan_handler);
1148 peers[0].process_events();
1149 assert_eq!(peers[0].peers.lock().unwrap().peers.len(), 0);