+++ /dev/null
-use secp256k1::key::{SecretKey,PublicKey};
-
-use ln::msgs;
-use ln::msgs::{MsgEncodable,MsgDecodable};
-use ln::peer_channel_encryptor::{PeerChannelEncryptor,NextNoiseStep};
-use util::byte_utils;
-use util::events::{EventsProvider,Event};
-
-use std::collections::{HashMap,LinkedList};
-use std::sync::{Arc, Mutex};
-use std::{cmp,mem,hash,fmt};
-
-pub struct MessageHandler {
- pub chan_handler: Arc<msgs::ChannelMessageHandler>,
- pub route_handler: Arc<msgs::RoutingMessageHandler>,
-}
-
-/// Provides an object which can be used to send data to and which uniquely identifies a connection
-/// to a remote host. You will need to be able to generate multiple of these which meet Eq and
-/// implement Hash to meet the PeerManager API.
-/// 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.
-pub trait SocketDescriptor : cmp::Eq + hash::Hash + Clone {
- /// Attempts to send some data from the given Vec starting at the given offset 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
- /// attempts may occur until that time.
- /// If the returned size is smaller than data.len() - write_offset, a write_available event must
- /// trigger the next time more data can be written. Additionally, until the a send_data event
- /// completes fully, no further read_events should trigger on the same peer!
- /// If a read_event on this descriptor had previously returned true (indicating that read
- /// events should be paused to prevent DoS in the send buffer), resume_read may be set
- /// indicating that read events on this descriptor should resume. A resume_read of false does
- /// *not* imply that further read events should be paused.
- fn send_data(&mut self, data: &Vec<u8>, write_offset: usize, resume_read: bool) -> usize;
-}
-
-/// 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).
-pub struct PeerHandleError {
- no_connection_possible: bool,
-}
-impl fmt::Debug for PeerHandleError {
- fn fmt(&self, formatter: &mut fmt::Formatter) -> Result<(), fmt::Error> {
- formatter.write_str("Peer Sent Invalid Data")
- }
-}
-
-struct Peer {
- channel_encryptor: PeerChannelEncryptor,
- outbound: bool,
- their_node_id: Option<PublicKey>,
- their_global_features: Option<msgs::GlobalFeatures>,
- their_local_features: Option<msgs::LocalFeatures>,
-
- pending_outbound_buffer: LinkedList<Vec<u8>>,
- pending_outbound_buffer_first_msg_offset: usize,
- awaiting_write_event: bool,
-
- pending_read_buffer: Vec<u8>,
- pending_read_buffer_pos: usize,
- pending_read_is_header: bool,
-}
-
-struct PeerHolder<Descriptor: SocketDescriptor> {
- peers: HashMap<Descriptor, Peer>,
- /// Only add to this set when noise completes:
- node_id_to_descriptor: HashMap<PublicKey, Descriptor>,
-}
-
-pub struct PeerManager<Descriptor: SocketDescriptor> {
- message_handler: MessageHandler,
- peers: Mutex<PeerHolder<Descriptor>>,
- pending_events: Mutex<Vec<Event>>,
- our_node_secret: SecretKey,
-}
-
-
-macro_rules! encode_msg {
- ($msg: expr, $msg_code: expr) => {
- {
- let just_msg = $msg.encode();
- let mut encoded_msg = Vec::with_capacity(just_msg.len() + 2);
- encoded_msg.extend_from_slice(&byte_utils::be16_to_array($msg_code));
- encoded_msg.extend_from_slice(&just_msg[..]);
- encoded_msg
- }
- }
-}
-
-/// 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.
-impl<Descriptor: SocketDescriptor> PeerManager<Descriptor> {
- pub fn new(message_handler: MessageHandler, our_node_secret: SecretKey) -> PeerManager<Descriptor> {
- PeerManager {
- message_handler: message_handler,
- peers: Mutex::new(PeerHolder { peers: HashMap::new(), node_id_to_descriptor: HashMap::new() }),
- pending_events: Mutex::new(Vec::new()),
- our_node_secret: our_node_secret,
- }
- }
-
- /// 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
- /// descriptor but must disconnect the connection immediately.
- /// Returns some bytes to send to the remote node.
- /// Panics if descriptor is duplicative with some other descriptor which has not yet has a
- /// disconnect_event.
- 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());
- let res = peer_encryptor.get_act_one().to_vec();
- let pending_read_buffer = [0; 50].to_vec(); // Noise act two is 50 bytes
-
- let mut peers = self.peers.lock().unwrap();
- if peers.peers.insert(descriptor, Peer {
- channel_encryptor: peer_encryptor,
- outbound: true,
- their_node_id: Some(their_node_id),
- their_global_features: None,
- their_local_features: None,
-
- pending_outbound_buffer: LinkedList::new(),
- pending_outbound_buffer_first_msg_offset: 0,
- awaiting_write_event: false,
-
- pending_read_buffer: pending_read_buffer,
- pending_read_buffer_pos: 0,
- pending_read_is_header: false,
- }).is_some() {
- panic!("PeerManager driver duplicated descriptors!");
- };
- Ok(res)
- }
-
- /// Indicates a new inbound connection has been established.
- /// 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
- /// immediately.
- /// Panics if descriptor is duplicative with some other descriptor which has not yet has a
- /// disconnect_event.
- 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
-
- let mut peers = self.peers.lock().unwrap();
- if peers.peers.insert(descriptor, Peer {
- channel_encryptor: peer_encryptor,
- outbound: false,
- their_node_id: None,
- their_global_features: None,
- their_local_features: None,
-
- pending_outbound_buffer: LinkedList::new(),
- pending_outbound_buffer_first_msg_offset: 0,
- awaiting_write_event: false,
-
- pending_read_buffer: pending_read_buffer,
- pending_read_buffer_pos: 0,
- pending_read_is_header: false,
- }).is_some() {
- panic!("PeerManager driver duplicated descriptors!");
- };
- Ok(())
- }
-
- fn do_attempt_write_data(descriptor: &mut Descriptor, peer: &mut Peer) {
- while !peer.awaiting_write_event {
- if {
- let next_buff = match peer.pending_outbound_buffer.front() {
- None => return,
- Some(buff) => buff,
- };
- let should_be_reading = peer.pending_outbound_buffer.len() < 10;
-
- let data_sent = descriptor.send_data(next_buff, peer.pending_outbound_buffer_first_msg_offset, should_be_reading);
- peer.pending_outbound_buffer_first_msg_offset += data_sent;
- if peer.pending_outbound_buffer_first_msg_offset == next_buff.len() { true } else { false }
- } {
- peer.pending_outbound_buffer_first_msg_offset = 0;
- peer.pending_outbound_buffer.pop_front();
- } else {
- peer.awaiting_write_event = true;
- }
- }
- }
-
- /// Indicates that there is room to write data to the given socket descriptor.
- /// May return an Err to indicate that the connection should be closed.
- /// 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> {
- 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"),
- Some(peer) => {
- peer.awaiting_write_event = false;
- Self::do_attempt_write_data(descriptor, peer);
- }
- };
- Ok(())
- }
-
- /// Indicates that data was read from the given socket descriptor.
- /// May return an Err to indicate that the connection should be closed.
- /// Will very likely call send_data on the descriptor passed in (or a 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. Note that this function will often call send_data on many peers before returning, not
- /// just this peer!
- /// 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). Note
- /// that this must be true even if a send_data call with resume_read=true was made during the
- /// course of this function!
- /// 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> {
- match self.do_read_event(peer_descriptor, data) {
- Ok(res) => Ok(res),
- Err(e) => {
- self.disconnect_event(peer_descriptor);
- Err(e)
- }
- }
- }
-
- fn do_read_event(&self, peer_descriptor: &mut Descriptor, data: Vec<u8>) -> Result<bool, PeerHandleError> {
- let pause_read = {
- let mut peers = self.peers.lock().unwrap();
- let (should_insert_node_id, pause_read) = match peers.peers.get_mut(peer_descriptor) {
- None => panic!("Descriptor for read_event is not already known to PeerManager"),
- Some(peer) => {
- assert!(peer.pending_read_buffer.len() > 0);
- assert!(peer.pending_read_buffer.len() > peer.pending_read_buffer_pos);
-
- macro_rules! try_potential_handleerror {
- ($thing: expr) => {
- match $thing {
- Ok(x) => x,
- Err(_e) => {
- //TODO: Handle e appropriately!
- return Err(PeerHandleError{});
- }
- };
- }
- }
-
- macro_rules! try_potential_decodeerror {
- ($thing: expr) => {
- match $thing {
- Ok(x) => x,
- Err(_e) => {
- //TODO: Handle e?
- return Err(PeerHandleError{});
- }
- };
- }
- }
-
- macro_rules! encode_and_send_msg {
- ($msg: expr, $msg_code: expr) => {
- peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!($msg, $msg_code)[..]));
- }
- }
-
- let mut insert_node_id = None;
-
- let mut read_pos = 0;
- while read_pos < data.len() {
- {
- let data_to_copy = cmp::min(peer.pending_read_buffer.len() - peer.pending_read_buffer_pos, data.len() - read_pos);
- 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]);
- read_pos += data_to_copy;
- peer.pending_read_buffer_pos += data_to_copy;
- }
- if peer.pending_read_buffer_pos == peer.pending_read_buffer.len() {
- let next_step = peer.channel_encryptor.get_noise_step();
- match next_step {
- NextNoiseStep::ActOne => {
- let act_two = try_potential_handleerror!(peer.channel_encryptor.process_act_one_with_key(&peer.pending_read_buffer[..], &self.our_node_secret)).to_vec();
- peer.pending_outbound_buffer.push_back(act_two);
- peer.pending_read_buffer = [0; 66].to_vec(); // act three is 66 bytes long
- },
- NextNoiseStep::ActTwo => {
- let act_three = try_potential_handleerror!(peer.channel_encryptor.process_act_two(&peer.pending_read_buffer[..], &self.our_node_secret)).to_vec();
- peer.pending_outbound_buffer.push_back(act_three);
- peer.pending_read_buffer = [0; 18].to_vec(); // Message length header is 18 bytes
- peer.pending_read_is_header = true;
-
- insert_node_id = Some(peer.their_node_id.unwrap());
- encode_and_send_msg!(msgs::Init {
- global_features: msgs::GlobalFeatures::new(),
- local_features: msgs::LocalFeatures::new(),
- }, 16);
- },
- NextNoiseStep::ActThree => {
- let their_node_id = try_potential_handleerror!(peer.channel_encryptor.process_act_three(&peer.pending_read_buffer[..]));
- peer.pending_read_buffer = [0; 18].to_vec(); // Message length header is 18 bytes
- peer.pending_read_is_header = true;
- peer.their_node_id = Some(their_node_id);
- insert_node_id = Some(peer.their_node_id.unwrap());
- },
- NextNoiseStep::NoiseComplete => {
- if peer.pending_read_is_header {
- let msg_len = try_potential_handleerror!(peer.channel_encryptor.decrypt_length_header(&peer.pending_read_buffer[..]));
- peer.pending_read_buffer = Vec::with_capacity(msg_len as usize + 16);
- peer.pending_read_buffer.resize(msg_len as usize + 16, 0);
- if msg_len < 2 { // Need at least the message type tag
- return Err(PeerHandleError{});
- }
- peer.pending_read_is_header = false;
- } else {
- let msg_data = try_potential_handleerror!(peer.channel_encryptor.decrypt_message(&peer.pending_read_buffer[..]));
- assert!(msg_data.len() >= 2);
-
- let msg_type = byte_utils::slice_to_be16(&msg_data[0..2]);
- if msg_type != 16 && peer.their_global_features.is_none() {
- // Need an init message as first message
- return Err(PeerHandleError{});
- }
- match msg_type {
- // Connection control:
- 16 => {
- let msg = try_potential_decodeerror!(msgs::Init::decode(&msg_data[2..]));
- if msg.global_features.requires_unknown_bits() {
- return Err(PeerHandleError{});
- }
- if msg.local_features.requires_unknown_bits() {
- return Err(PeerHandleError{});
- }
- peer.their_global_features = Some(msg.global_features);
- peer.their_local_features = Some(msg.local_features);
-
- if !peer.outbound {
- encode_and_send_msg!(msgs::Init {
- global_features: msgs::GlobalFeatures::new(),
- local_features: msgs::LocalFeatures::new(),
- }, 16);
- }
- },
- 17 => {
- // Error msg
- },
- 18 => { }, // ping
- 19 => { }, // pong
-
- // Channel control:
- 32 => {
- let msg = try_potential_decodeerror!(msgs::OpenChannel::decode(&msg_data[2..]));
- let resp = try_potential_handleerror!(self.message_handler.chan_handler.handle_open_channel(&peer.their_node_id.unwrap(), &msg));
- encode_and_send_msg!(resp, 33);
- },
- 33 => {
- let msg = try_potential_decodeerror!(msgs::AcceptChannel::decode(&msg_data[2..]));
- try_potential_handleerror!(self.message_handler.chan_handler.handle_accept_channel(&peer.their_node_id.unwrap(), &msg));
- },
-
- 34 => {
- let msg = try_potential_decodeerror!(msgs::FundingCreated::decode(&msg_data[2..]));
- let resp = try_potential_handleerror!(self.message_handler.chan_handler.handle_funding_created(&peer.their_node_id.unwrap(), &msg));
- encode_and_send_msg!(resp, 35);
- },
- 35 => {
- let msg = try_potential_decodeerror!(msgs::FundingSigned::decode(&msg_data[2..]));
- try_potential_handleerror!(self.message_handler.chan_handler.handle_funding_signed(&peer.their_node_id.unwrap(), &msg));
- },
- 36 => {
- let msg = try_potential_decodeerror!(msgs::FundingLocked::decode(&msg_data[2..]));
- let resp_option = try_potential_handleerror!(self.message_handler.chan_handler.handle_funding_locked(&peer.their_node_id.unwrap(), &msg));
- match resp_option {
- Some(resp) => encode_and_send_msg!(resp, 259),
- None => {},
- }
- },
-
- 38 => {
- let msg = try_potential_decodeerror!(msgs::Shutdown::decode(&msg_data[2..]));
- let resp_options = try_potential_handleerror!(self.message_handler.chan_handler.handle_shutdown(&peer.their_node_id.unwrap(), &msg));
- if let Some(resp) = resp_options.0 {
- encode_and_send_msg!(resp, 38);
- }
- if let Some(resp) = resp_options.1 {
- encode_and_send_msg!(resp, 39);
- }
- },
- 39 => {
- let msg = try_potential_decodeerror!(msgs::ClosingSigned::decode(&msg_data[2..]));
- let resp_option = try_potential_handleerror!(self.message_handler.chan_handler.handle_closing_signed(&peer.their_node_id.unwrap(), &msg));
- if let Some(resp) = resp_option {
- encode_and_send_msg!(resp, 39);
- }
- },
-
- 128 => {
- let msg = try_potential_decodeerror!(msgs::UpdateAddHTLC::decode(&msg_data[2..]));
- try_potential_handleerror!(self.message_handler.chan_handler.handle_update_add_htlc(&peer.their_node_id.unwrap(), &msg));
- },
- 130 => {
- let msg = try_potential_decodeerror!(msgs::UpdateFulfillHTLC::decode(&msg_data[2..]));
- try_potential_handleerror!(self.message_handler.chan_handler.handle_update_fulfill_htlc(&peer.their_node_id.unwrap(), &msg));
- },
- 131 => {
- let msg = try_potential_decodeerror!(msgs::UpdateFailHTLC::decode(&msg_data[2..]));
- try_potential_handleerror!(self.message_handler.chan_handler.handle_update_fail_htlc(&peer.their_node_id.unwrap(), &msg));
- },
- 135 => {
- let msg = try_potential_decodeerror!(msgs::UpdateFailMalformedHTLC::decode(&msg_data[2..]));
- try_potential_handleerror!(self.message_handler.chan_handler.handle_update_fail_malformed_htlc(&peer.their_node_id.unwrap(), &msg));
- },
-
- 132 => {
- let msg = try_potential_decodeerror!(msgs::CommitmentSigned::decode(&msg_data[2..]));
- let resp = try_potential_handleerror!(self.message_handler.chan_handler.handle_commitment_signed(&peer.their_node_id.unwrap(), &msg));
- encode_and_send_msg!(resp, 133);
- },
- 133 => {
- let msg = try_potential_decodeerror!(msgs::RevokeAndACK::decode(&msg_data[2..]));
- let resp_option = try_potential_handleerror!(self.message_handler.chan_handler.handle_revoke_and_ack(&peer.their_node_id.unwrap(), &msg));
- match resp_option {
- Some(resps) => {
- for resp in resps.0 {
- encode_and_send_msg!(resp, 128);
- }
- encode_and_send_msg!(resps.1, 132);
- },
- None => {},
- }
- },
- 134 => {
- let msg = try_potential_decodeerror!(msgs::UpdateFee::decode(&msg_data[2..]));
- try_potential_handleerror!(self.message_handler.chan_handler.handle_update_fee(&peer.their_node_id.unwrap(), &msg));
- },
- 136 => { }, // TODO: channel_reestablish
-
- // Routing control:
- 259 => {
- let msg = try_potential_decodeerror!(msgs::AnnouncementSignatures::decode(&msg_data[2..]));
- try_potential_handleerror!(self.message_handler.chan_handler.handle_announcement_signatures(&peer.their_node_id.unwrap(), &msg));
- },
- 256 => {
- let msg = try_potential_decodeerror!(msgs::ChannelAnnouncement::decode(&msg_data[2..]));
- let should_forward = try_potential_handleerror!(self.message_handler.route_handler.handle_channel_announcement(&msg));
-
- if should_forward {
- // TODO: forward msg along to all our other peers!
- }
- },
- 257 => {
- let msg = try_potential_decodeerror!(msgs::NodeAnnouncement::decode(&msg_data[2..]));
- try_potential_handleerror!(self.message_handler.route_handler.handle_node_announcement(&msg));
- },
- 258 => {
- let msg = try_potential_decodeerror!(msgs::ChannelUpdate::decode(&msg_data[2..]));
- try_potential_handleerror!(self.message_handler.route_handler.handle_channel_update(&msg));
- },
- _ => {
- if (msg_type & 1) == 0 {
- //TODO: Fail all channels. Kill the peer!
- return Err(PeerHandleError{});
- }
- },
- }
-
- peer.pending_read_buffer = [0; 18].to_vec();
- peer.pending_read_is_header = true;
- }
- }
- }
- peer.pending_read_buffer_pos = 0;
- }
- }
-
- Self::do_attempt_write_data(peer_descriptor, peer);
-
- (insert_node_id /* should_insert_node_id */, peer.pending_outbound_buffer.len() > 10) // pause_read
- }
- };
-
- match should_insert_node_id {
- Some(node_id) => { peers.node_id_to_descriptor.insert(node_id, peer_descriptor.clone()); },
- None => {}
- };
-
- pause_read
- };
-
- self.process_events();
-
- Ok(pause_read)
- }
-
- /// Checks for any events generated by our handlers and processes them. May be needed after eg
- /// calls to ChannelManager::process_pending_htlc_forward.
- pub fn process_events(&self) {
- let mut upstream_events = Vec::new();
- {
- // TODO: There are some DoS attacks here where you can flood someone's outbound send
- // buffer by doing things like announcing channels on another node. We should be willing to
- // drop optional-ish messages when send buffers get full!
-
- let mut events_generated = self.message_handler.chan_handler.get_and_clear_pending_events();
- let mut peers = self.peers.lock().unwrap();
- for event in events_generated.drain(..) {
- macro_rules! get_peer_for_forwarding {
- ($node_id: expr, $handle_no_such_peer: block) => {
- {
- let descriptor = match peers.node_id_to_descriptor.get($node_id) {
- Some(descriptor) => descriptor.clone(),
- None => {
- $handle_no_such_peer;
- continue;
- },
- };
- match peers.peers.get_mut(&descriptor) {
- Some(peer) => {
- (descriptor, peer)
- },
- None => panic!("Inconsistent peers set state!"),
- }
- }
- }
- }
- match event {
- Event::FundingGenerationReady {..} => { /* Hand upstream */ },
- Event::FundingBroadcastSafe {..} => { /* Hand upstream */ },
- Event::PaymentReceived {..} => { /* Hand upstream */ },
- Event::PaymentSent {..} => { /* Hand upstream */ },
- Event::PaymentFailed {..} => { /* Hand upstream */ },
-
- Event::PendingHTLCsForwardable {..} => {
- //TODO: Handle upstream in some confused form so that upstream just knows
- //to call us somehow?
- },
- Event::SendFundingCreated { ref node_id, ref msg } => {
- let (mut descriptor, peer) = get_peer_for_forwarding!(node_id, {
- //TODO: generate a DiscardFunding event indicating to the wallet that
- //they should just throw away this funding transaction
- });
- peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(msg, 34)));
- Self::do_attempt_write_data(&mut descriptor, peer);
- continue;
- },
- Event::SendFundingLocked { ref node_id, ref msg, ref announcement_sigs } => {
- let (mut descriptor, peer) = get_peer_for_forwarding!(node_id, {
- //TODO: Do whatever we're gonna do for handling dropped messages
- });
- peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(msg, 36)));
- match announcement_sigs {
- &Some(ref announce_msg) => peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(announce_msg, 259))),
- &None => {},
- }
- Self::do_attempt_write_data(&mut descriptor, peer);
- continue;
- },
- Event::SendHTLCs { ref node_id, ref msgs, ref commitment_msg } => {
- let (mut descriptor, peer) = get_peer_for_forwarding!(node_id, {
- //TODO: Do whatever we're gonna do for handling dropped messages
- });
- for msg in msgs {
- peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(msg, 128)));
- }
- peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(commitment_msg, 132)));
- Self::do_attempt_write_data(&mut descriptor, peer);
- continue;
- },
- Event::SendFulfillHTLC { ref node_id, ref msg } => {
- let (mut descriptor, peer) = get_peer_for_forwarding!(node_id, {
- //TODO: Do whatever we're gonna do for handling dropped messages
- });
- peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(msg, 130)));
- Self::do_attempt_write_data(&mut descriptor, peer);
- continue;
- },
- Event::SendFailHTLC { ref node_id, ref msg } => {
- let (mut descriptor, peer) = get_peer_for_forwarding!(node_id, {
- //TODO: Do whatever we're gonna do for handling dropped messages
- });
- peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(msg, 131)));
- Self::do_attempt_write_data(&mut descriptor, peer);
- continue;
- },
- Event::BroadcastChannelAnnouncement { ref msg, ref update_msg } => {
- let encoded_msg = encode_msg!(msg, 256);
- let encoded_update_msg = encode_msg!(update_msg, 258);
-
- for (ref descriptor, ref mut peer) in peers.peers.iter_mut() {
- if !peer.channel_encryptor.is_ready_for_encryption() {
- continue
- }
- match peer.their_node_id {
- None => continue,
- Some(their_node_id) => {
- if their_node_id == msg.contents.node_id_1 || their_node_id == msg.contents.node_id_2 {
- continue
- }
- }
- }
- peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encoded_msg[..]));
- peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encoded_update_msg[..]));
- Self::do_attempt_write_data(&mut (*descriptor).clone(), peer);
- }
- continue;
- },
- }
-
- upstream_events.push(event);
- }
- }
-
- let mut pending_events = self.pending_events.lock().unwrap();
- for event in upstream_events.drain(..) {
- pending_events.push(event);
- }
- }
-
- /// 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!
- /// Panics if the descriptor was not previously registered in a successful new_*_connection event.
- pub fn disconnect_event(&self, descriptor: &Descriptor) {
- let mut peers = self.peers.lock().unwrap();
- let peer_option = peers.peers.remove(descriptor);
- match peer_option {
- None => panic!("Descriptor for disconnect_event is not already known to PeerManager"),
- Some(peer) => {
- match peer.their_node_id {
- Some(node_id) => { peers.node_id_to_descriptor.remove(&node_id); },
- None => {}
- }
- //TODO: Notify the chan_handler that this node disconnected, and do something about
- //handling response messages that were queued for sending (maybe the send buffer
- //needs to be unencrypted?)
- }
- };
- }
-}
-
-impl<Descriptor: SocketDescriptor> EventsProvider for PeerManager<Descriptor> {
- fn get_and_clear_pending_events(&self) -> Vec<Event> {
- let mut pending_events = self.pending_events.lock().unwrap();
- let mut ret = Vec::new();
- mem::swap(&mut ret, &mut *pending_events);
- ret
- }
-}