use secp256k1::ecdh::SharedSecret;
use secp256k1;
-use chain::chaininterface::{ChainListener,ChainWatchInterface,FeeEstimator};
+use chain::chaininterface::{BroadcasterInterface,ChainListener,ChainWatchInterface,FeeEstimator};
use ln::channel::Channel;
use ln::channelmonitor::ManyChannelMonitor;
use ln::router::Route;
use ln::msgs;
use ln::msgs::{HandleError,ChannelMessageHandler,MsgEncodable,MsgDecodable};
-use util::byte_utils;
-use util::events;
-use util::internal_traits;
-
-use rand::{thread_rng,Rng};
+use util::{byte_utils, events, internal_traits, rng};
+use util::sha2::Sha256;
use crypto::mac::{Mac,MacResult};
use crypto::hmac::Hmac;
use crypto::digest::Digest;
-use crypto::sha2::Sha256;
use crypto::symmetriccipher::SynchronousStreamCipher;
use crypto::chacha20::ChaCha20;
-use std::sync::{Mutex,Arc};
+use std::sync::{Mutex,MutexGuard,Arc};
use std::collections::HashMap;
use std::collections::hash_map;
-use std::ptr;
-use std::mem;
+use std::{ptr, mem};
use std::time::{Instant,Duration};
/// Stores the info we will need to send when we want to forward an HTLC onwards
outgoing_cltv_value: u32,
}
-struct ChannelHolder {
- by_id: HashMap<Uint256, Channel>,
- short_to_id: HashMap<u64, Uint256>,
+#[cfg(feature = "fuzztarget")]
+impl PendingForwardHTLCInfo {
+ pub fn dummy() -> Self {
+ Self {
+ onion_packet: None,
+ payment_hash: [0; 32],
+ short_channel_id: 0,
+ prev_short_channel_id: 0,
+ amt_to_forward: 0,
+ outgoing_cltv_value: 0,
+ }
+ }
+}
+
+enum PendingOutboundHTLC {
+ IntermediaryHopData {
+ source_short_channel_id: u64,
+ incoming_packet_shared_secret: SharedSecret,
+ },
+ OutboundRoute {
+ route: Route,
+ },
+ /// Used for channel rebalancing
+ CycledRoute {
+ source_short_channel_id: u64,
+ incoming_packet_shared_secret: SharedSecret,
+ route: Route,
+ }
+}
+
+enum HTLCFailReason<'a> {
+ ErrorPacket {
+ err: &'a msgs::OnionErrorPacket,
+ },
+ Reason {
+ failure_code: u16,
+ data: &'a[u8],
+ }
}
/// We hold back HTLCs we intend to relay for a random interval in the range (this, 5*this). This
/// probably increase this significantly.
const MIN_HTLC_RELAY_HOLDING_CELL_MILLIS: u32 = 50;
-struct PendingForwardableHTLCs {
+struct ChannelHolder {
+ by_id: HashMap<Uint256, Channel>,
+ short_to_id: HashMap<u64, Uint256>,
next_forward: Instant,
/// short channel id -> forward infos. Key of 0 means payments received
forward_htlcs: HashMap<u64, Vec<PendingForwardHTLCInfo>>,
+ claimable_htlcs: HashMap<[u8; 32], PendingOutboundHTLC>,
+}
+struct MutChannelHolder<'a> {
+ by_id: &'a mut HashMap<Uint256, Channel>,
+ short_to_id: &'a mut HashMap<u64, Uint256>,
+ next_forward: &'a mut Instant,
+ /// short channel id -> forward infos. Key of 0 means payments received
+ forward_htlcs: &'a mut HashMap<u64, Vec<PendingForwardHTLCInfo>>,
+ claimable_htlcs: &'a mut HashMap<[u8; 32], PendingOutboundHTLC>,
+}
+impl ChannelHolder {
+ fn borrow_parts(&mut self) -> MutChannelHolder {
+ MutChannelHolder {
+ by_id: &mut self.by_id,
+ short_to_id: &mut self.short_to_id,
+ next_forward: &mut self.next_forward,
+ /// short channel id -> forward infos. Key of 0 means payments received
+ forward_htlcs: &mut self.forward_htlcs,
+ claimable_htlcs: &mut self.claimable_htlcs,
+ }
+ }
}
/// Manager which keeps track of a number of channels and sends messages to the appropriate
fee_estimator: Arc<FeeEstimator>,
monitor: Arc<ManyChannelMonitor>,
chain_monitor: Arc<ChainWatchInterface>,
+ tx_broadcaster: Arc<BroadcasterInterface>,
announce_channels_publicly: bool,
fee_proportional_millionths: u32,
secp_ctx: Secp256k1,
- channels: Mutex<ChannelHolder>,
+ channel_state: Mutex<ChannelHolder>,
our_network_key: SecretKey,
pending_events: Mutex<Vec<events::Event>>,
- pending_htlcs_forwardable: Mutex<PendingForwardableHTLCs>,
- pending_claimable_htlcs: Mutex<HashMap<[u8; 32], u64>>,
}
const CLTV_EXPIRY_DELTA: u16 = 6 * 24 * 2; //TODO?
mu: [u8; 32],
}
+pub struct ChannelDetails {
+ /// The channel's ID (prior to funding transaction generation, this is a random 32 bytes,
+ /// thereafter this is the txid of the funding transaction xor the funding transaction output).
+ /// Note that this means this value is *not* persistent - it can change once during the
+ /// lifetime of the channel.
+ pub channel_id: Uint256,
+ /// The position of the funding transaction in the chain. None if the funding transaction has
+ /// not yet been confirmed and the channel fully opened.
+ pub short_channel_id: Option<u64>,
+ pub remote_network_id: PublicKey,
+ pub channel_value_satoshis: u64,
+ /// The user_id passed in to create_channel, or 0 if the channel was inbound.
+ pub user_id: u64,
+}
+
impl ChannelManager {
/// Constructs a new ChannelManager to hold several channels and route between them. This is
/// the main "logic hub" for all channel-related actions, and implements ChannelMessageHandler.
/// fee_proportional_millionths is an optional fee to charge any payments routed through us.
/// Non-proportional fees are fixed according to our risk using the provided fee estimator.
/// panics if channel_value_satoshis is >= (1 << 24)!
- pub fn new(our_network_key: SecretKey, fee_proportional_millionths: u32, announce_channels_publicly: bool, network: Network, feeest: Arc<FeeEstimator>, monitor: Arc<ManyChannelMonitor>, chain_monitor: Arc<ChainWatchInterface>) -> Result<Arc<ChannelManager>, secp256k1::Error> {
+ pub fn new(our_network_key: SecretKey, fee_proportional_millionths: u32, announce_channels_publicly: bool, network: Network, feeest: Arc<FeeEstimator>, monitor: Arc<ManyChannelMonitor>, chain_monitor: Arc<ChainWatchInterface>
, tx_broadcaster: Arc<BroadcasterInterface>) -> Result<Arc<ChannelManager>, secp256k1::Error> {
let secp_ctx = Secp256k1::new();
let res = Arc::new(ChannelManager {
genesis_hash: genesis_block(network).header.bitcoin_hash(),
fee_estimator: feeest.clone(),
monitor: monitor.clone(),
- chain_monitor: chain_monitor,
-
- announce_channels_publicly: announce_channels_publicly,
- fee_proportional_millionths: fee_proportional_millionths,
- secp_ctx: secp_ctx,
+ chain_monitor,
+ tx_broadcaster,
- channels: Mutex::new(ChannelHolder{by_id: HashMap::new(), short_to_id: HashMap::new()}),
- our_network_key: our_network_key,
+ announce_channels_publicly,
+ fee_proportional_millionths,
+ secp_ctx,
- pending_events: Mutex::new(Vec::new()),
- pending_htlcs_forwardable: Mutex::new(PendingForwardableHTLCs {
+ channel_state: Mutex::new(ChannelHolder{
+ by_id: HashMap::new(),
+ short_to_id: HashMap::new(),
next_forward: Instant::now(),
forward_htlcs: HashMap::new(),
+ claimable_htlcs: HashMap::new(),
}),
- pending_claimable_htlcs: Mutex::new(HashMap::new()),
+ our_network_key,
+
+ pending_events: Mutex::new(Vec::new()),
});
let weak_res = Arc::downgrade(&res);
res.chain_monitor.register_listener(weak_res);
pub fn create_channel(&self, their_network_key: PublicKey, channel_value_satoshis: u64, user_id: u64) -> Result<msgs::OpenChannel, HandleError> {
let channel = Channel::new_outbound(&*self.fee_estimator, their_network_key, channel_value_satoshis, self.announce_channels_publicly, user_id);
let res = channel.get_open_channel(self.genesis_hash.clone(), &*self.fee_estimator)?;
- let mut channels = self.channels.lock().unwrap();
- match channels.by_id.insert(channel.channel_id(), channel) {
+ let mut channel_state = self.channel_state.lock().unwrap();
+ match channel_state.by_id.insert(channel.channel_id(), channel) {
Some(_) => panic!("RNG is bad???"),
None => Ok(res)
}
}
+ /// Gets the list of open channels, in random order. See ChannelDetail field documentation for
+ /// more information.
+ pub fn list_channels(&self) -> Vec<ChannelDetails> {
+ let channel_state = self.channel_state.lock().unwrap();
+ let mut res = Vec::with_capacity(channel_state.by_id.len());
+ for (channel_id, channel) in channel_state.by_id.iter() {
+ res.push(ChannelDetails {
+ channel_id: (*channel_id).clone(),
+ short_channel_id: channel.get_short_channel_id(),
+ remote_network_id: channel.get_their_node_id(),
+ channel_value_satoshis: channel.get_value_satoshis(),
+ user_id: channel.get_user_id(),
+ });
+ }
+ res
+ }
+
+ /// Begins the process of closing a channel. After this call (plus some timeout), no new HTLCs
+ /// will be accepted on the given channel, and after additional timeout/the closing of all
+ /// pending HTLCs, the channel will be closed on chain.
+ pub fn close_channel(&self, channel_id: &Uint256) -> Result<msgs::Shutdown, HandleError> {
+ let res = {
+ let mut channel_state = self.channel_state.lock().unwrap();
+ match channel_state.by_id.entry(channel_id.clone()) {
+ hash_map::Entry::Occupied(mut chan_entry) => {
+ let res = chan_entry.get_mut().get_shutdown()?;
+ if chan_entry.get().is_shutdown() {
+ chan_entry.remove_entry();
+ }
+ res
+ },
+ hash_map::Entry::Vacant(_) => return Err(HandleError{err: "No such channel", msg: None})
+ }
+ };
+ for payment_hash in res.1 {
+ // unknown_next_peer...I dunno who that is anymore....
+ self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), &payment_hash, HTLCFailReason::Reason { failure_code: 0x4000 | 10, data: &[0; 0] });
+ }
+ Ok(res.0)
+ }
+
#[inline]
fn gen_rho_mu_from_shared_secret(shared_secret: &SharedSecret) -> ([u8; 32], [u8; 32]) {
({
/// first hop in route. Value parameters are provided via the last hop in route, see
/// documentation for RouteHop fields for more info.
/// See-also docs on Channel::send_htlc_and_commit.
- pub fn send_payment(&self, route: &Route, payment_hash: [u8; 32]) -> Result<Option<(msgs::UpdateAddHTLC, msgs::CommitmentSigned)>, HandleError> {
+ pub fn send_payment(&self, route: Route, payment_hash: [u8; 32]) -> Result<Option<(msgs::UpdateAddHTLC, msgs::CommitmentSigned)>, HandleError> {
if route.hops.len() < 1 || route.hops.len() > 20 {
return Err(HandleError{err: "Route didn't go anywhere/had bogus size", msg: None});
}
+ let our_node_id = self.get_our_node_id();
+ for (idx, hop) in route.hops.iter().enumerate() {
+ if idx != route.hops.len() - 1 && hop.pubkey == our_node_id {
+ return Err(HandleError{err: "Route went through us but wasn't a simple rebalance loop to us", msg: None});
+ }
+ }
- let mut rng = thread_rng();
- let session_priv = secp_call!(SecretKey::from_slice(&self.secp_ctx, & {
+ let session_priv = secp_call!(SecretKey::from_slice(&self.secp_ctx, &{
let mut session_key = [0; 32];
- rng.fill_bytes(&mut session_key);
+ rng::fill_bytes(&mut session_key);
session_key
}));
let associated_data = Vec::new(); //TODO: What to put here?
- let onion_keys = ChannelManager::construct_onion_keys(&self.secp_ctx, route, &session_priv)?;
- let (onion_payloads, htlc_msat, htlc_cltv) = ChannelManager::build_onion_payloads(route)?;
+ let onion_keys = ChannelManager::construct_onion_keys(&self.secp_ctx, &route, &session_priv)?;
+ let (onion_payloads, htlc_msat, htlc_cltv) = ChannelManager::build_onion_payloads(&route)?;
let onion_packet = ChannelManager::construct_onion_packet(onion_payloads, onion_keys, associated_data)?;
- let mut channels = self.channels.lock().unwrap();
- let id = match channels.short_to_id.get(&route.hops.first().unwrap().short_channel_id) {
+ let mut channel_state = self.channel_state.lock().unwrap();
+ let id = match channel_state.short_to_id.get(&route.hops.first().unwrap().short_channel_id) {
None => return Err(HandleError{err: "No channel available with first hop!", msg: None}),
Some(id) => id.clone()
};
- let chan = channels.by_id.get_mut(&id).unwrap();
- if chan.get_their_node_id() != route.hops.first().unwrap().pubkey {
- return Err(HandleError{err: "Node ID mismatch on first hop!", msg: None});
+ let res = {
+ let chan = channel_state.by_id.get_mut(&id).unwrap();
+ if chan.get_their_node_id() != route.hops.first().unwrap().pubkey {
+ return Err(HandleError{err: "Node ID mismatch on first hop!", msg: None});
+ }
+ chan.send_htlc_and_commit(htlc_msat, payment_hash.clone(), htlc_cltv, onion_packet)?
+ };
+
+ if channel_state.claimable_htlcs.insert(payment_hash, PendingOutboundHTLC::OutboundRoute {
+ route: route,
+ }).is_some() {
+ // TODO: We need to track these better, we're not generating these, so a
+ // third-party might make this happen:
+ panic!("payment_hash was repeated! Don't let this happen");
}
- chan.send_htlc_and_commit(htlc_msat, payment_hash, htlc_cltv, onion_packet)
+
+ Ok(res)
}
/// Call this upon creation of a funding transaction for the given channel.
/// Panics if a funding transaction has already been provided for this channel.
pub fn funding_transaction_generated(&self, temporary_channel_id: &Uint256, funding_txo: (Sha256dHash, u16)) {
let (chan, msg) = {
- let mut channels = self.channels.lock().unwrap();
- match channels.by_id.remove(&temporary_channel_id) {
+ let mut channel_state = self.channel_state.lock().unwrap();
+ match channel_state.by_id.remove(&temporary_channel_id) {
Some(mut chan) => {
match chan.get_outbound_funding_created(funding_txo.0, funding_txo.1) {
Ok(funding_msg) => {
});
}
- let mut channels = self.channels.lock().unwrap();
- channels.by_id.insert(chan.channel_id(), chan);
+ let mut channel_state = self.channel_state.lock().unwrap();
+ channel_state.by_id.insert(chan.channel_id(), chan);
}
fn get_announcement_sigs(&self, chan: &Channel) -> Result<Option<msgs::AnnouncementSignatures>, HandleError> {
}
pub fn process_pending_htlc_forward(&self) {
- let forward_htlcs = {
- let mut pending_forwards = self.pending_htlcs_forwardable.lock().unwrap();
- if Instant::now() < pending_forwards.next_forward {
- return;
- }
- let mut new_map = HashMap::new();
- mem::swap(&mut new_map, &mut pending_forwards.forward_htlcs);
- new_map
- };
-
let mut new_events = Vec::new();
-
+ let mut failed_forwards = Vec::new();
{
- for (short_chan_id, pending_forwards) in forward_htlcs.iter() {
- let mut pending_claimable_htlcs = self.pending_claimable_htlcs.lock().unwrap();
- for forward_info in pending_forwards {
- pending_claimable_htlcs.insert(forward_info.payment_hash, forward_info.prev_short_channel_id);
- if *short_chan_id == 0 {
- new_events.push(events::Event::PaymentReceived {
- payment_hash: forward_info.payment_hash,
- amt: forward_info.amt_to_forward,
- });
- }
- }
+ let mut channel_state_lock = self.channel_state.lock().unwrap();
+ let channel_state = channel_state_lock.borrow_parts();
+
+ if cfg!(not(feature = "fuzztarget")) && Instant::now() < *channel_state.next_forward {
+ return;
}
- }
- {
- let mut channels = self.channels.lock().unwrap();
- for (short_chan_id, pending_forwards) in forward_htlcs {
+
+ for (short_chan_id, pending_forwards) in channel_state.forward_htlcs.drain() {
if short_chan_id != 0 {
- let forward_chan_id = match channels.short_to_id.get(&short_chan_id) {
+ let forward_chan_id = match channel_state.short_to_id.get(&short_chan_id) {
Some(chan_id) => chan_id.clone(),
None => {
+ failed_forwards.reserve(pending_forwards.len());
+ for forward_info in pending_forwards {
+ failed_forwards.push((forward_info.payment_hash, 0x4000 | 10, None));
+ }
// TODO: Send a failure packet back on each pending_forward
continue;
}
};
- let forward_chan = &mut channels.by_id.get_mut(&forward_chan_id).unwrap();
+ let forward_chan = &mut channel_state.by_id.get_mut(&forward_chan_id).unwrap();
let mut add_htlc_msgs = Vec::new();
for forward_info in pending_forwards {
match forward_chan.send_htlc(forward_info.amt_to_forward, forward_info.payment_hash, forward_info.outgoing_cltv_value, forward_info.onion_packet.unwrap()) {
Err(_e) => {
- // TODO: Send a failure packet back
+ let chan_update = self.get_channel_update(forward_chan).unwrap();
+ failed_forwards.push((forward_info.payment_hash, 0x4000 | 7, Some(chan_update)));
continue;
},
Ok(update_add) => {
commitment_msg: commitment_msg,
});
}
+ } else {
+ for forward_info in pending_forwards {
+ new_events.push(events::Event::PaymentReceived {
+ payment_hash: forward_info.payment_hash,
+ amt: forward_info.amt_to_forward,
+ });
+ }
}
}
}
+ for failed_forward in failed_forwards.drain(..) {
+ match failed_forward.2 {
+ None => self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), &failed_forward.0, HTLCFailReason::Reason { failure_code: failed_forward.1, data: &[0;0] }),
+ Some(chan_update) => self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), &failed_forward.0, HTLCFailReason::Reason { failure_code: failed_forward.1, data: &chan_update.encode()[..] }),
+ };
+ }
+
if new_events.is_empty() { return }
let mut events = self.pending_events.lock().unwrap();
}
}
+ /// Indicates that the preimage for payment_hash is unknown after a PaymentReceived event.
+ pub fn fail_htlc_backwards(&self, payment_hash: &[u8; 32]) -> bool {
+ self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), payment_hash, HTLCFailReason::Reason { failure_code: 0x4000 | 15, data: &[0;0] })
+ }
+
+ fn fail_htlc_backwards_internal(&self, mut channel_state: MutexGuard<ChannelHolder>, payment_hash: &[u8; 32], onion_error: HTLCFailReason) -> bool {
+ let mut pending_htlc = {
+ match channel_state.claimable_htlcs.remove(payment_hash) {
+ Some(pending_htlc) => pending_htlc,
+ None => return false,
+ }
+ };
+
+ match pending_htlc {
+ PendingOutboundHTLC::CycledRoute { source_short_channel_id, incoming_packet_shared_secret, .. } => {
+ pending_htlc = PendingOutboundHTLC::IntermediaryHopData { source_short_channel_id, incoming_packet_shared_secret };
+ },
+ _ => {}
+ }
+
+ match pending_htlc {
+ PendingOutboundHTLC::CycledRoute { .. } => { panic!("WAT"); },
+ PendingOutboundHTLC::OutboundRoute { .. } => {
+ //TODO: DECRYPT route from OutboundRoute
+ mem::drop(channel_state);
+ let mut pending_events = self.pending_events.lock().unwrap();
+ pending_events.push(events::Event::PaymentFailed {
+ payment_hash: payment_hash.clone()
+ });
+ false
+ },
+ PendingOutboundHTLC::IntermediaryHopData { source_short_channel_id, incoming_packet_shared_secret } => {
+ let err_packet = match onion_error {
+ HTLCFailReason::Reason { failure_code, data } => {
+ let packet = ChannelManager::build_failure_packet(&incoming_packet_shared_secret, failure_code, data).encode();
+ ChannelManager::encrypt_failure_packet(&incoming_packet_shared_secret, &packet)
+ },
+ HTLCFailReason::ErrorPacket { err } => {
+ ChannelManager::encrypt_failure_packet(&incoming_packet_shared_secret, &err.data)
+ }
+ };
+
+ let (node_id, fail_msg) = {
+ let chan_id = match channel_state.short_to_id.get(&source_short_channel_id) {
+ Some(chan_id) => chan_id.clone(),
+ None => return false
+ };
+
+ let chan = channel_state.by_id.get_mut(&chan_id).unwrap();
+ match chan.get_update_fail_htlc(payment_hash, err_packet) {
+ Ok(msg) => (chan.get_their_node_id(), msg),
+ Err(_e) => {
+ //TODO: Do something with e?
+ return false;
+ },
+ }
+ };
+
+ mem::drop(channel_state);
+ let mut pending_events = self.pending_events.lock().unwrap();
+ pending_events.push(events::Event::SendFailHTLC {
+ node_id,
+ msg: fail_msg
+ });
+
+ true
+ },
+ }
+ }
+
/// Provides a payment preimage in response to a PaymentReceived event, returning true and
/// generating message events for the net layer to claim the payment, if possible. Thus, you
/// should probably kick the net layer to go send messages if this returns true!
pub fn claim_funds(&self, payment_preimage: [u8; 32]) -> bool {
+ self.claim_funds_internal(payment_preimage, true)
+ }
+ pub fn claim_funds_internal(&self, payment_preimage: [u8; 32], from_user: bool) -> bool {
let mut sha = Sha256::new();
sha.input(&payment_preimage);
let mut payment_hash = [0; 32];
sha.result(&mut payment_hash);
- let short_chan_id = {
- let mut pending_claimable_htlcs = self.pending_claimable_htlcs.lock().unwrap();
- match pending_claimable_htlcs.remove(&payment_hash) {
- Some(short_id) => short_id,
+ let mut channel_state = self.channel_state.lock().unwrap();
+ let mut pending_htlc = {
+ match channel_state.claimable_htlcs.remove(&payment_hash) {
+ Some(pending_htlc) => pending_htlc,
None => return false,
}
};
- let (node_id, fulfill_msg) = {
- let mut channels = self.channels.lock().unwrap();
- let chan_id = match channels.short_to_id.get(&short_chan_id) {
- Some(chan_id) => chan_id.clone(),
- None => return false
- };
+ match pending_htlc {
+ PendingOutboundHTLC::CycledRoute { source_short_channel_id, incoming_packet_shared_secret, route } => {
+ if from_user { // This was the end hop back to us
+ pending_htlc = PendingOutboundHTLC::IntermediaryHopData { source_short_channel_id, incoming_packet_shared_secret };
+ channel_state.claimable_htlcs.insert(payment_hash, PendingOutboundHTLC::OutboundRoute { route });
+ } else { // This came from the first upstream node
+ // Bank error in our favor! Maybe we should tell the user this somehow???
+ pending_htlc = PendingOutboundHTLC::OutboundRoute { route };
+ channel_state.claimable_htlcs.insert(payment_hash, PendingOutboundHTLC::IntermediaryHopData { source_short_channel_id, incoming_packet_shared_secret });
+ }
+ },
+ _ => {},
+ }
- let chan = channels.by_id.get_mut(&chan_id).unwrap();
- match chan.get_update_fulfill_htlc(payment_preimage) {
- Ok(msg) => (chan.get_their_node_id(), msg),
- Err(_e) => {
- //TODO: Do something with e?
- return false;
- },
- }
- };
+ match pending_htlc {
+ PendingOutboundHTLC::CycledRoute { .. } => { panic!("WAT"); },
+ PendingOutboundHTLC::OutboundRoute { .. } => {
+ if from_user {
+ panic!("Called claim_funds with a preimage for an outgoing payment. There is nothing we can do with this, and something is seriously wrong if you knew this...");
+ }
+ mem::drop(channel_state);
+ let mut pending_events = self.pending_events.lock().unwrap();
+ pending_events.push(events::Event::PaymentSent {
+ payment_preimage
+ });
+ false
+ },
+ PendingOutboundHTLC::IntermediaryHopData { source_short_channel_id, .. } => {
+ let (node_id, fulfill_msg) = {
+ let chan_id = match channel_state.short_to_id.get(&source_short_channel_id) {
+ Some(chan_id) => chan_id.clone(),
+ None => return false
+ };
- let mut pending_events = self.pending_events.lock().unwrap();
- pending_events.push(events::Event::SendFulfillHTLC {
- node_id: node_id,
- msg: fulfill_msg
- });
+ let chan = channel_state.by_id.get_mut(&chan_id).unwrap();
+ match chan.get_update_fulfill_htlc(payment_preimage) {
+ Ok(msg) => (chan.get_their_node_id(), msg),
+ Err(_e) => {
+ //TODO: Do something with e?
+ return false;
+ },
+ }
+ };
+
+ mem::drop(channel_state);
+ let mut pending_events = self.pending_events.lock().unwrap();
+ pending_events.push(events::Event::SendFulfillHTLC {
+ node_id: node_id,
+ msg: fulfill_msg
+ });
- true
+ true
+ },
+ }
}
/// Gets the node_id held by this ChannelManager
fn block_connected(&self, header: &BlockHeader, height: u32, txn_matched: &[&Transaction], indexes_of_txn_matched: &[u32]) {
let mut new_funding_locked_messages = Vec::new();
{
- let mut channels = self.channels.lock().unwrap();
+ let mut channel_state = self.channel_state.lock().unwrap();
let mut short_to_ids_to_insert = Vec::new();
- for channel in channels.by_id.values_mut() {
+ for channel in channel_state.by_id.values_mut() {
match channel.block_connected(header, height, txn_matched, indexes_of_txn_matched) {
Some(funding_locked) => {
let announcement_sigs = match self.get_announcement_sigs(channel) {
}
}
for to_insert in short_to_ids_to_insert {
- channels.short_to_id.insert(to_insert.0, to_insert.1);
+ channel_state.short_to_id.insert(to_insert.0, to_insert.1);
}
}
let mut pending_events = self.pending_events.lock().unwrap();
}
fn block_disconnected(&self, header: &BlockHeader) {
- let mut channels = self.channels.lock().unwrap();
- for channel in channels.by_id.values_mut() {
+ let mut channel_state = self.channel_state.lock().unwrap();
+ for channel in channel_state.by_id.values_mut() {
if channel.block_disconnected(header) {
//TODO Close channel here
}
if msg.chain_hash != self.genesis_hash {
return Err(HandleError{err: "Unknown genesis block hash", msg: None});
}
- let mut channels = self.channels.lock().unwrap();
- if channels.by_id.contains_key(&msg.temporary_channel_id) {
+ let mut channel_state = self.channel_state.lock().unwrap();
+ if channel_state.by_id.contains_key(&msg.temporary_channel_id) {
return Err(HandleError{err: "temporary_channel_id collision!", msg: None});
}
let channel = Channel::new_from_req(&*self.fee_estimator, their_node_id.clone(), msg, 0, self.announce_channels_publicly)?;
let accept_msg = channel.get_accept_channel()?;
- channels.by_id.insert(channel.channel_id(), channel);
+ channel_state.by_id.insert(channel.channel_id(), channel);
Ok(accept_msg)
}
fn handle_accept_channel(&self, their_node_id: &PublicKey, msg: &msgs::AcceptChannel) -> Result<(), HandleError> {
let (value, output_script, user_id) = {
- let mut channels = self.channels.lock().unwrap();
- match channels.by_id.get_mut(&msg.temporary_channel_id) {
+ let mut channel_state = self.channel_state.lock().unwrap();
+ match channel_state.by_id.get_mut(&msg.temporary_channel_id) {
Some(chan) => {
if chan.get_their_node_id() != *their_node_id {
return Err(HandleError{err: "Got a message for a channel from the wrong node!", msg: None})
//funding_created a second time, or long after the first, or whatever (note this also
//leaves the short_to_id map in a busted state.
let chan = {
- let mut channels = self.channels.lock().unwrap();
- match channels.by_id.remove(&msg.temporary_channel_id) {
+ let mut channel_state = self.channel_state.lock().unwrap();
+ match channel_state.by_id.remove(&msg.temporary_channel_id) {
Some(mut chan) => {
if chan.get_their_node_id() != *their_node_id {
return Err(HandleError{err: "Got a message for a channel from the wrong node!", msg: None})
// for a bogus channel.
let chan_monitor = chan.0.channel_monitor();
self.monitor.add_update_monitor(chan_monitor.get_funding_txo().unwrap(), chan_monitor)?;
- let mut channels = self.channels.lock().unwrap();
- channels.by_id.insert(chan.1.channel_id, chan.0);
+ let mut channel_state = self.channel_state.lock().unwrap();
+ channel_state.by_id.insert(chan.1.channel_id, chan.0);
Ok(chan.1)
}
fn handle_funding_signed(&self, their_node_id: &PublicKey, msg: &msgs::FundingSigned) -> Result<(), HandleError> {
let (funding_txo, user_id) = {
- let mut channels = self.channels.lock().unwrap();
- match channels.by_id.get_mut(&msg.channel_id) {
+ let mut channel_state = self.channel_state.lock().unwrap();
+ match channel_state.by_id.get_mut(&msg.channel_id) {
Some(chan) => {
if chan.get_their_node_id() != *their_node_id {
return Err(HandleError{err: "Got a message for a channel from the wrong node!", msg: None})
}
fn handle_funding_locked(&self, their_node_id: &PublicKey, msg: &msgs::FundingLocked) -> Result<Option<msgs::AnnouncementSignatures>, HandleError> {
- let mut channels = self.channels.lock().unwrap();
- match channels.by_id.get_mut(&msg.channel_id) {
+ let mut channel_state = self.channel_state.lock().unwrap();
+ match channel_state.by_id.get_mut(&msg.channel_id) {
Some(chan) => {
if chan.get_their_node_id() != *their_node_id {
return Err(HandleError{err: "Got a message for a channel from the wrong node!", msg: None})
};
}
- fn handle_shutdown(&self, _their_node_id: &PublicKey, _msg: &msgs::Shutdown) -> Result<(), HandleError> {
- unimplemented!()
+ fn handle_shutdown(&self, their_node_id: &PublicKey, msg: &msgs::Shutdown) -> Result<(Option<msgs::Shutdown>, Option<msgs::ClosingSigned>), HandleError> {
+ let res = {
+ let mut channel_state = self.channel_state.lock().unwrap();
+
+ match channel_state.by_id.entry(msg.channel_id.clone()) {
+ hash_map::Entry::Occupied(mut chan_entry) => {
+ if chan_entry.get().get_their_node_id() != *their_node_id {
+ return Err(HandleError{err: "Got a message for a channel from the wrong node!", msg: None})
+ }
+ let res = chan_entry.get_mut().shutdown(&*self.fee_estimator, &msg)?;
+ if chan_entry.get().is_shutdown() {
+ chan_entry.remove_entry();
+ }
+ res
+ },
+ hash_map::Entry::Vacant(_) => return Err(HandleError{err: "Failed to find corresponding channel", msg: None})
+ }
+ };
+ for payment_hash in res.2 {
+ // unknown_next_peer...I dunno who that is anymore....
+ self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), &payment_hash, HTLCFailReason::Reason { failure_code: 0x4000 | 10, data: &[0; 0] });
+ }
+ Ok((res.0, res.1))
}
- fn handle_closing_signed(&self, _their_node_id: &PublicKey, _msg: &msgs::ClosingSigned) -> Result<(), HandleError> {
- unimplemented!()
+ fn handle_closing_signed(&self, their_node_id: &PublicKey, msg: &msgs::ClosingSigned) -> Result<Option<msgs::ClosingSigned>, HandleError> {
+ let res = {
+ let mut channel_state = self.channel_state.lock().unwrap();
+ match channel_state.by_id.entry(msg.channel_id.clone()) {
+ hash_map::Entry::Occupied(mut chan_entry) => {
+ if chan_entry.get().get_their_node_id() != *their_node_id {
+ return Err(HandleError{err: "Got a message for a channel from the wrong node!", msg: None})
+ }
+ let res = chan_entry.get_mut().closing_signed(&*self.fee_estimator, &msg)?;
+ if res.1.is_some() {
+ // We're done with this channel, we've got a signed closing transaction and
+ // will send the closing_signed back to the remote peer upon return. This
+ // also implies there are no pending HTLCs left on the channel, so we can
+ // fully delete it from tracking (the channel monitor is still around to
+ // watch for old state broadcasts)!
+ chan_entry.remove_entry();
+ }
+ res
+ },
+ hash_map::Entry::Vacant(_) => return Err(HandleError{err: "Failed to find corresponding channel", msg: None})
+ }
+ };
+ if let Some(broadcast_tx) = res.1 {
+ self.tx_broadcaster.broadcast_transaction(&broadcast_tx);
+ }
+ Ok(res.0)
}
fn handle_update_add_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateAddHTLC) -> Result<(), msgs::HandleError> {
let associated_data = Vec::new(); //TODO: What to put here?
+ macro_rules! get_onion_hash {
+ () => {
+ {
+ let mut sha = Sha256::new();
+ sha.input(&msg.onion_routing_packet.hop_data);
+ let mut onion_hash = [0; 32];
+ sha.result(&mut onion_hash);
+ onion_hash
+ }
+ }
+ }
+
+ macro_rules! return_err {
+ ($msg: expr, $err_code: expr, $data: expr) => {
+ return Err(msgs::HandleError {
+ err: $msg,
+ msg: Some(msgs::ErrorMessage::UpdateFailHTLC {
+ msg: msgs::UpdateFailHTLC {
+ channel_id: msg.channel_id,
+ htlc_id: msg.htlc_id,
+ reason: ChannelManager::build_first_hop_failure_packet(&shared_secret, $err_code, $data),
+ }
+ }),
+ });
+ }
+ }
+
if msg.onion_routing_packet.version != 0 {
//TODO: Spec doesn't indicate if we should only hash hop_data here (and in other
//sha256_of_onion error data packets), or the entire onion_routing_packet. Either way,
//receiving node would have to brute force to figure out which version was put in the
//packet by the node that send us the message, in the case of hashing the hop_data, the
//node knows the HMAC matched, so they already know what is there...
- let mut sha = Sha256::new();
- sha.input(&msg.onion_routing_packet.hop_data);
- let mut onion_hash = [0; 32];
- sha.result(&mut onion_hash);
- return Err(msgs::HandleError {
- err: "Unknown onion packet version",
- msg: Some(msgs::ErrorMessage::UpdateFailHTLC {
- msg: msgs::UpdateFailHTLC {
- channel_id: msg.channel_id,
- htlc_id: msg.htlc_id,
- reason: ChannelManager::build_first_hop_failure_packet(&shared_secret, 0x8000 | 0x4000 | 4, &onion_hash),
- }
- }),
- });
+ return_err!("Unknown onion packet version", 0x8000 | 0x4000 | 4, &get_onion_hash!());
}
let mut hmac = Hmac::new(Sha256::new(), &mu);
hmac.input(&msg.onion_routing_packet.hop_data);
hmac.input(&associated_data[..]);
if hmac.result() != MacResult::new(&msg.onion_routing_packet.hmac) {
- let mut sha = Sha256::new();
- sha.input(&msg.onion_routing_packet.hop_data);
- let mut onion_hash = [0; 32];
- sha.result(&mut onion_hash);
- return Err(HandleError{err: "HMAC Check failed",
- msg: Some(msgs::ErrorMessage::UpdateFailHTLC {
- msg: msgs::UpdateFailHTLC {
- channel_id: msg.channel_id,
- htlc_id: msg.htlc_id,
- reason: ChannelManager::build_first_hop_failure_packet(&shared_secret, 0x8000 | 0x4000 | 5, &onion_hash),
- }
- }),
- });
+ return_err!("HMAC Check failed", 0x8000 | 0x4000 | 5, &get_onion_hash!());
}
let mut chacha = ChaCha20::new(&rho, &[0u8; 8]);
msgs::DecodeError::UnknownRealmByte => 0x4000 | 1,
_ => 0x2000 | 2, // Should never happen
};
- return Err(HandleError{err: "Unable to decode our hop data",
- msg: Some(msgs::ErrorMessage::UpdateFailHTLC {
- msg: msgs::UpdateFailHTLC {
- channel_id: msg.channel_id,
- htlc_id: msg.htlc_id,
- reason: ChannelManager::build_first_hop_failure_packet(&shared_secret, error_code, &[0;0]),
- }
- }),
- });
+ return_err!("Unable to decode our hop data", error_code, &[0;0]);
},
Ok(msg) => msg
}
let mut pending_forward_info = if next_hop_data.hmac == [0; 32] {
// OUR PAYMENT!
if next_hop_data.data.amt_to_forward != msg.amount_msat {
- return Err(HandleError{err: "Upstream node sent less than we were supposed to receive in payment",
- msg: Some(msgs::ErrorMessage::UpdateFailHTLC {
- msg: msgs::UpdateFailHTLC {
- channel_id: msg.channel_id,
- htlc_id: msg.htlc_id,
- reason: ChannelManager::build_first_hop_failure_packet(&shared_secret, 19, &byte_utils::be64_to_array(msg.amount_msat)),
- }
- }),
- });
+ return_err!("Upstream node sent less than we were supposed to receive in payment", 19, &byte_utils::be64_to_array(msg.amount_msat));
}
if next_hop_data.data.outgoing_cltv_value != msg.cltv_expiry {
- return Err(HandleError{err: "Upstream node set CLTV to the wrong value",
- msg: Some(msgs::ErrorMessage::UpdateFailHTLC {
- msg: msgs::UpdateFailHTLC {
- channel_id: msg.channel_id,
- htlc_id: msg.htlc_id,
- reason: ChannelManager::build_first_hop_failure_packet(&shared_secret, 18, &byte_utils::be32_to_array(msg.cltv_expiry)),
- }
- }),
- });
+ return_err!("Upstream node set CLTV to the wrong value", 18, &byte_utils::be32_to_array(msg.cltv_expiry));
}
// Note that we could obviously respond immediately with an update_fulfill_htlc
Err(_) => {
// Return temporary node failure as its technically our issue, not the
// channel's issue.
- return Err(HandleError{err: "Blinding factor is an invalid private key",
- msg: Some(msgs::ErrorMessage::UpdateFailHTLC {
- msg: msgs::UpdateFailHTLC {
- channel_id: msg.channel_id,
- htlc_id: msg.htlc_id,
- reason: ChannelManager::build_first_hop_failure_packet(&shared_secret, 0x2000 | 2, &[0;0]),
- }
- }),
- });
+ return_err!("Blinding factor is an invalid private key", 0x2000 | 2, &[0;0]);
},
Ok(key) => key
}
Err(_) => {
// Return temporary node failure as its technically our issue, not the
// channel's issue.
- return Err(HandleError{err: "New blinding factor is an invalid private key",
- msg: Some(msgs::ErrorMessage::UpdateFailHTLC {
- msg: msgs::UpdateFailHTLC {
- channel_id: msg.channel_id,
- htlc_id: msg.htlc_id,
- reason: ChannelManager::build_first_hop_failure_packet(&shared_secret, 0x2000 | 2, &[0;0]),
- }
- }),
- });
+ return_err!("New blinding factor is an invalid private key", 0x2000 | 2, &[0;0]);
},
Ok(_) => {}
};
}
};
- let mut channels = self.channels.lock().unwrap();
+ let mut channel_state_lock = self.channel_state.lock().unwrap();
+ let channel_state = channel_state_lock.borrow_parts();
- if pending_forward_info.short_channel_id != 0 {
- let forwarding_id = match channels.short_to_id.get(&pending_forward_info.short_channel_id) {
+ if pending_forward_info.onion_packet.is_some() { // If short_channel_id is 0 here, we'll reject them in the body here
+ let forwarding_id = match channel_state.short_to_id.get(&pending_forward_info.short_channel_id) {
None => {
- return Err(HandleError{err: "Don't have available channel for forwarding as requested.",
- msg: Some(msgs::ErrorMessage::UpdateFailHTLC {
- msg: msgs::UpdateFailHTLC {
- channel_id: msg.channel_id,
- htlc_id: msg.htlc_id,
- reason: ChannelManager::build_first_hop_failure_packet(&shared_secret, 0x4000 | 10, &[0;0]),
- }
- }),
- });
+ return_err!("Don't have available channel for forwarding as requested.", 0x4000 | 10, &[0;0]);
},
Some(id) => id.clone(),
};
- let chan = channels.by_id.get_mut(&forwarding_id).unwrap();
+ let chan = channel_state.by_id.get_mut(&forwarding_id).unwrap();
if !chan.is_live() {
let chan_update = self.get_channel_update(chan).unwrap();
- return Err(HandleError{err: "Forwarding channel is not in a ready state.",
- msg: Some(msgs::ErrorMessage::UpdateFailHTLC {
- msg: msgs::UpdateFailHTLC {
- channel_id: msg.channel_id,
- htlc_id: msg.htlc_id,
- reason: ChannelManager::build_first_hop_failure_packet(&shared_secret, 0x4000 | 10, &chan_update.encode()[..]),
- }
- }),
- });
+ return_err!("Forwarding channel is not in a ready state.", 0x4000 | 10, &chan_update.encode()[..]);
}
}
- match channels.by_id.get_mut(&msg.channel_id) {
+ let claimable_htlcs_entry = channel_state.claimable_htlcs.entry(msg.payment_hash.clone());
+
+ // We dont correctly handle payments that route through us twice on their way to their
+ // destination. That's OK since those nodes are probably busted or trying to do network
+ // mapping through repeated loops. In either case, we want them to stop talking to us, so
+ // we send permanent_node_failure.
+ match &claimable_htlcs_entry {
+ &hash_map::Entry::Occupied(ref e) => {
+ let mut acceptable_cycle = false;
+ match e.get() {
+ &PendingOutboundHTLC::OutboundRoute { .. } => {
+ acceptable_cycle = pending_forward_info.short_channel_id == 0;
+ },
+ _ => {},
+ }
+ if !acceptable_cycle {
+ return_err!("Payment looped through us twice", 0x4000 | 0x2000 | 2, &[0;0]);
+ }
+ },
+ _ => {},
+ }
+
+ let (source_short_channel_id, res) = match channel_state.by_id.get_mut(&msg.channel_id) {
Some(chan) => {
if chan.get_their_node_id() != *their_node_id {
return Err(HandleError{err: "Got a message for a channel from the wrong node!", msg: None})
if !chan.is_usable() {
return Err(HandleError{err: "Channel not yet available for receiving HTLCs", msg: None});
}
- pending_forward_info.prev_short_channel_id = chan.get_short_channel_id().unwrap();
- chan.update_add_htlc(&msg, pending_forward_info)
+ let short_channel_id = chan.get_short_channel_id().unwrap();
+ pending_forward_info.prev_short_channel_id = short_channel_id;
+ (short_channel_id, chan.update_add_htlc(&msg, pending_forward_info)?)
},
None => return Err(HandleError{err: "Failed to find corresponding channel", msg: None}), //TODO: panic?
+ };
+
+ match claimable_htlcs_entry {
+ hash_map::Entry::Occupied(mut e) => {
+ let outbound_route = e.get_mut();
+ let route = match outbound_route {
+ &mut PendingOutboundHTLC::OutboundRoute { ref route } => {
+ route.clone()
+ },
+ _ => { panic!("WAT") },
+ };
+ *outbound_route = PendingOutboundHTLC::CycledRoute {
+ source_short_channel_id,
+ incoming_packet_shared_secret: shared_secret,
+ route
+ };
+ },
+ hash_map::Entry::Vacant(e) => {
+ e.insert(PendingOutboundHTLC::IntermediaryHopData {
+ source_short_channel_id,
+ incoming_packet_shared_secret: shared_secret,
+ });
+ }
}
+
+ Ok(res)
}
- fn handle_update_fulfill_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFulfillHTLC) -> Result<Option<(Vec<msgs::UpdateAddHTLC>, msgs::CommitmentSigned)>, HandleError> {
- let res = {
- let mut channels = self.channels.lock().unwrap();
- match channels.by_id.get_mut(&msg.channel_id) {
+ fn handle_update_fulfill_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFulfillHTLC) -> Result<(), HandleError> {
+ {
+ let mut channel_state = self.channel_state.lock().unwrap();
+ match channel_state.by_id.get_mut(&msg.channel_id) {
Some(chan) => {
if chan.get_their_node_id() != *their_node_id {
return Err(HandleError{err: "Got a message for a channel from the wrong node!", msg: None})
}
- chan.update_fulfill_htlc(&msg)
+ chan.update_fulfill_htlc(&msg)?;
},
None => return Err(HandleError{err: "Failed to find corresponding channel", msg: None})
}
- };
+ }
//TODO: Delay the claimed_funds relaying just like we do outbound relay!
- self.claim_funds(msg.payment_preimage.clone());
- res
+ self.claim_funds_internal(msg.payment_preimage.clone(), false);
+ Ok(())
}
- fn handle_update_fail_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFailHTLC) -> Result<Option<(Vec<msgs::UpdateAddHTLC>, msgs::CommitmentSigned)>, HandleError> {
- let mut channels = self.channels.lock().unwrap();
- match channels.by_id.get_mut(&msg.channel_id) {
+ fn handle_update_fail_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFailHTLC) -> Result<(), HandleError> {
+ let mut channel_state = self.channel_state.lock().unwrap();
+ let payment_hash = match channel_state.by_id.get_mut(&msg.channel_id) {
Some(chan) => {
if chan.get_their_node_id() != *their_node_id {
return Err(HandleError{err: "Got a message for a channel from the wrong node!", msg: None})
}
- chan.update_fail_htlc(&msg)
+ chan.update_fail_htlc(&msg)?
},
None => return Err(HandleError{err: "Failed to find corresponding channel", msg: None})
- }
- //TODO Pass the reason backwards through the onion channel
+ };
+ self.fail_htlc_backwards_internal(channel_state, &payment_hash, HTLCFailReason::ErrorPacket { err: &msg.reason });
+ Ok(())
}
- fn handle_update_fail_malformed_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFailMalformedHTLC) -> Result<Option<(Vec<msgs::UpdateAddHTLC>, msgs::CommitmentSigned)>, HandleError> {
- let mut channels = self.channels.lock().unwrap();
- match channels.by_id.get_mut(&msg.channel_id) {
+ fn handle_update_fail_malformed_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFailMalformedHTLC) -> Result<(), HandleError> {
+ let mut channel_state = self.channel_state.lock().unwrap();
+ let payment_hash = match channel_state.by_id.get_mut(&msg.channel_id) {
Some(chan) => {
if chan.get_their_node_id() != *their_node_id {
return Err(HandleError{err: "Got a message for a channel from the wrong node!", msg: None})
}
- chan.update_fail_malformed_htlc(&msg)
+ chan.update_fail_malformed_htlc(&msg)?
},
None => return Err(HandleError{err: "Failed to find corresponding channel", msg: None})
- }
+ };
+ self.fail_htlc_backwards_internal(channel_state, &payment_hash, HTLCFailReason::Reason { failure_code: msg.failure_code, data: &[0;0] });
+ Ok(())
}
fn handle_commitment_signed(&self, their_node_id: &PublicKey, msg: &msgs::CommitmentSigned) -> Result<msgs::RevokeAndACK, HandleError> {
- let ((res, mut forwarding_infos), monitor) = {
- let mut channels = self.channels.lock().unwrap();
- match channels.by_id.get_mut(&msg.channel_id) {
+ let mut forward_event = None;
+ let (res, monitor) = {
+ let mut channel_state = self.channel_state.lock().unwrap();
+
+ let ((res, mut forwarding_infos), monitor) = match channel_state.by_id.get_mut(&msg.channel_id) {
Some(chan) => {
if chan.get_their_node_id() != *their_node_id {
return Err(HandleError{err: "Got a message for a channel from the wrong node!", msg: None})
(chan.commitment_signed(&msg)?, chan.channel_monitor())
},
None => return Err(HandleError{err: "Failed to find corresponding channel", msg: None})
- }
- };
- //TODO: Only if we store HTLC sigs
- self.monitor.add_update_monitor(monitor.get_funding_txo().unwrap(), monitor)?;
+ };
- let mut forward_event = None;
- {
- let mut pending_htlcs = self.pending_htlcs_forwardable.lock().unwrap();
- if pending_htlcs.forward_htlcs.is_empty() {
- let mut rng = thread_rng();
- forward_event = Some(Instant::now() + Duration::from_millis(((rng.next_f32() * 4.0 + 1.0) * MIN_HTLC_RELAY_HOLDING_CELL_MILLIS as f32) as u64));
- pending_htlcs.next_forward = forward_event.unwrap();
+ if channel_state.forward_htlcs.is_empty() {
+ forward_event = Some(Instant::now() + Duration::from_millis(((rng::rand_f32() * 4.0 + 1.0) * MIN_HTLC_RELAY_HOLDING_CELL_MILLIS as f32) as u64));
+ channel_state.next_forward = forward_event.unwrap();
}
for forward_info in forwarding_infos.drain(..) {
- match pending_htlcs.forward_htlcs.entry(forward_info.short_channel_id) {
+ match channel_state.forward_htlcs.entry(forward_info.short_channel_id) {
hash_map::Entry::Occupied(mut entry) => {
entry.get_mut().push(forward_info);
},
}
}
}
- }
+
+ (res, monitor)
+ };
+ //TODO: Only if we store HTLC sigs
+ self.monitor.add_update_monitor(monitor.get_funding_txo().unwrap(), monitor)?;
+
match forward_event {
Some(time) => {
let mut pending_events = self.pending_events.lock().unwrap();
Ok(res)
}
- fn handle_revoke_and_ack(&self, their_node_id: &PublicKey, msg: &msgs::RevokeAndACK) -> Result<(), HandleError> {
- let monitor = {
- let mut channels = self.channels.lock().unwrap();
- match channels.by_id.get_mut(&msg.channel_id) {
+ fn handle_revoke_and_ack(&self, their_node_id: &PublicKey, msg: &msgs::RevokeAndACK) -> Result<Option<(Vec<msgs::UpdateAddHTLC>, msgs::CommitmentSigned)>, HandleError> {
+ let (res, monitor) = {
+ let mut channel_state = self.channel_state.lock().unwrap();
+ match channel_state.by_id.get_mut(&msg.channel_id) {
Some(chan) => {
if chan.get_their_node_id() != *their_node_id {
return Err(HandleError{err: "Got a message for a channel from the wrong node!", msg: None})
}
- chan.revoke_and_ack(&msg)?;
- chan.channel_monitor()
+ (chan.revoke_and_ack(&msg)?, chan.channel_monitor())
},
None => return Err(HandleError{err: "Failed to find corresponding channel", msg: None})
}
};
self.monitor.add_update_monitor(monitor.get_funding_txo().unwrap(), monitor)?;
- Ok(())
+ Ok(res)
}
fn handle_update_fee(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFee) -> Result<(), HandleError> {
- let mut channels = self.channels.lock().unwrap();
- match channels.by_id.get_mut(&msg.channel_id) {
+ let mut channel_state = self.channel_state.lock().unwrap();
+ match channel_state.by_id.get_mut(&msg.channel_id) {
Some(chan) => {
if chan.get_their_node_id() != *their_node_id {
return Err(HandleError{err: "Got a message for a channel from the wrong node!", msg: None})
fn handle_announcement_signatures(&self, their_node_id: &PublicKey, msg: &msgs::AnnouncementSignatures) -> Result<(), HandleError> {
let (chan_announcement, chan_update) = {
- let mut channels = self.channels.lock().unwrap();
- match channels.by_id.get_mut(&msg.channel_id) {
+ let mut channel_state = self.channel_state.lock().unwrap();
+ match channel_state.by_id.get_mut(&msg.channel_id) {
Some(chan) => {
if chan.get_their_node_id() != *their_node_id {
return Err(HandleError{err: "Got a message for a channel from the wrong node!", msg: None})
#[cfg(test)]
mod tests {
+ use chain::chaininterface;
use ln::channelmanager::{ChannelManager,OnionKeys};
use ln::router::{Route, RouteHop, Router};
use ln::msgs;
use bitcoin::util::misc::hex_bytes;
use bitcoin::util::hash::Sha256dHash;
+ use bitcoin::util::uint::Uint256;
use bitcoin::blockdata::block::BlockHeader;
use bitcoin::blockdata::transaction::Transaction;
use bitcoin::network::constants::Network;
use rand::{thread_rng,Rng};
- use std::sync::Arc;
+ use std::sync::{Arc, Mutex};
use std::default::Default;
use std::time::Instant;
}
static mut CHAN_COUNT: u16 = 0;
- fn confirm_transaction(chain: &test_utils::TestWatchInterface, tx: &Transaction) {
+ fn confirm_transaction(chain: &chaininterface::ChainWatchInterfaceUtil, tx: &Transaction) {
let mut header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
let chan_id = unsafe { CHAN_COUNT };
- chain.watch_util.block_connected_checked(&header, 1, &[tx; 1], &[chan_id as u32; 1]);
+ chain.block_connected_checked(&header, 1, &[tx; 1], &[chan_id as u32; 1]);
for i in 2..100 {
header = BlockHeader { version: 0x20000000, prev_blockhash: header.bitcoin_hash(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
- chain.watch_util.block_connected_checked(&header, i, &[tx; 0], &[0; 0]);
+ chain.block_connected_checked(&header, i, &[tx; 0], &[0; 0]);
}
}
- fn create_chan_between_nodes(node_a: &ChannelManager, chain_a: &test_utils::TestWatchInterface, node_b: &ChannelManager, chain_b: &test_utils::TestWatchInterface) -> (msgs::ChannelAnnouncement, msgs::ChannelUpdate, msgs::ChannelUpdate) {
- let open_chan = node_a.create_channel(node_b.get_our_node_id(), (1 << 24) - 1, 42).unwrap();
+ fn create_chan_between_nodes(node_a: &ChannelManager, chain_a: &chaininterface::ChainWatchInterfaceUtil, node_b: &ChannelManager, chain_b: &chaininterface::ChainWatchInterfaceUtil) -> (msgs::ChannelAnnouncement, msgs::ChannelUpdate, msgs::ChannelUpdate, Uint256) {
+ let open_chan = node_a.create_channel(node_b.get_our_node_id(), 100000, 42).unwrap();
let accept_chan = node_b.handle_open_channel(&node_a.get_our_node_id(), &open_chan).unwrap();
node_a.handle_accept_channel(&node_b.get_our_node_id(), &accept_chan).unwrap();
let chan_id = unsafe { CHAN_COUNT };
- let tx = Transaction { version: chan_id as u32, lock_time: 0, input: Vec::new(), output: Vec::new(), witness: Vec::new() };
+ let tx = Transaction { version: chan_id as u32, lock_time: 0, input: Vec::new(), output: Vec::new() };
let funding_output = (Sha256dHash::from_data(&serialize(&tx).unwrap()[..]), chan_id);
let events_1 = node_a.get_and_clear_pending_events();
assert_eq!(events_1.len(), 1);
match events_1[0] {
Event::FundingGenerationReady { ref temporary_channel_id, ref channel_value_satoshis, output_script: _, user_channel_id } => {
- assert_eq!(*channel_value_satoshis, (1 << 24) - 1);
+ assert_eq!(*channel_value_satoshis, 100000);
assert_eq!(user_channel_id, 42);
node_a.funding_transaction_generated(&temporary_channel_id, funding_output.clone());
_ => panic!("Unexpected event"),
};
+ let channel_id;
+
confirm_transaction(&chain_b, &tx);
let events_5 = node_b.get_and_clear_pending_events();
assert_eq!(events_5.len(), 1);
let as_announcement_sigs = match events_5[0] {
Event::SendFundingLocked { ref node_id, ref msg, ref announcement_sigs } => {
assert_eq!(*node_id, node_a.get_our_node_id());
+ channel_id = msg.channel_id.clone();
let as_announcement_sigs = node_a.handle_funding_locked(&node_b.get_our_node_id(), msg).unwrap().unwrap();
node_a.handle_announcement_signatures(&node_b.get_our_node_id(), &(*announcement_sigs).clone().unwrap()).unwrap();
as_announcement_sigs
CHAN_COUNT += 1;
}
- ((*announcement).clone(), (*as_update).clone(), (*bs_update).clone())
+ ((*announcement).clone(), (*as_update).clone(), (*bs_update).clone(), channel_id)
+ }
+
+ fn close_channel(outbound_node: &ChannelManager, outbound_broadcaster: &test_utils::TestBroadcaster, inbound_node: &ChannelManager, inbound_broadcaster: &test_utils::TestBroadcaster, channel_id: &Uint256, close_inbound_first: bool) {
+ let (node_a, broadcaster_a) = if close_inbound_first { (inbound_node, inbound_broadcaster) } else { (outbound_node, outbound_broadcaster) };
+ let (node_b, broadcaster_b) = if close_inbound_first { (outbound_node, outbound_broadcaster) } else { (inbound_node, inbound_broadcaster) };
+ let (tx_a, tx_b);
+
+ let shutdown_a = node_a.close_channel(channel_id).unwrap();
+ let (shutdown_b, mut closing_signed_b) = node_b.handle_shutdown(&node_a.get_our_node_id(), &shutdown_a).unwrap();
+ if !close_inbound_first {
+ assert!(closing_signed_b.is_none());
+ }
+ let (empty_a, mut closing_signed_a) = node_a.handle_shutdown(&node_b.get_our_node_id(), &shutdown_b.unwrap()).unwrap();
+ assert!(empty_a.is_none());
+ if close_inbound_first {
+ assert!(closing_signed_a.is_none());
+ closing_signed_a = node_a.handle_closing_signed(&node_b.get_our_node_id(), &closing_signed_b.unwrap()).unwrap();
+ assert_eq!(broadcaster_a.txn_broadcasted.lock().unwrap().len(), 1);
+ tx_a = broadcaster_a.txn_broadcasted.lock().unwrap().remove(0);
+
+ let empty_b = node_b.handle_closing_signed(&node_a.get_our_node_id(), &closing_signed_a.unwrap()).unwrap();
+ assert!(empty_b.is_none());
+ assert_eq!(broadcaster_b.txn_broadcasted.lock().unwrap().len(), 1);
+ tx_b = broadcaster_b.txn_broadcasted.lock().unwrap().remove(0);
+ } else {
+ closing_signed_b = node_b.handle_closing_signed(&node_a.get_our_node_id(), &closing_signed_a.unwrap()).unwrap();
+ assert_eq!(broadcaster_b.txn_broadcasted.lock().unwrap().len(), 1);
+ tx_b = broadcaster_b.txn_broadcasted.lock().unwrap().remove(0);
+
+ let empty_a2 = node_a.handle_closing_signed(&node_b.get_our_node_id(), &closing_signed_b.unwrap()).unwrap();
+ assert!(empty_a2.is_none());
+ assert_eq!(broadcaster_a.txn_broadcasted.lock().unwrap().len(), 1);
+ tx_a = broadcaster_a.txn_broadcasted.lock().unwrap().remove(0);
+ }
+ assert_eq!(tx_a, tx_b);
}
struct SendEvent {
impl SendEvent {
fn from_event(event: Event) -> SendEvent {
match event {
- Event::SendHTLCs{ node_id, msgs, commitment_msg } => {
+ Event::SendHTLCs { node_id, msgs, commitment_msg } => {
SendEvent { node_id: node_id, msgs: msgs, commitment_msg: commitment_msg }
},
_ => panic!("Unexpected event type!"),
}
static mut PAYMENT_COUNT: u8 = 0;
- fn send_payment(origin_node: &ChannelManager, origin_router: &Router, expected_route: &[&ChannelManager]) {
- let route = origin_router.get_route(&expected_route.last().unwrap().get_our_node_id(), &Vec::new(), 1000000, 142).unwrap();
- assert_eq!(route.hops.len(), expected_route.len());
- for (node, hop) in expected_route.iter().zip(route.hops.iter()) {
- assert_eq!(hop.pubkey, node.get_our_node_id());
- }
-
- let payment_preimage = unsafe { [PAYMENT_COUNT; 32] };
+ fn send_along_route(origin_node: &ChannelManager, route: Route, expected_route: &[&ChannelManager], recv_value: u64) -> ([u8; 32], [u8; 32]) {
+ let our_payment_preimage = unsafe { [PAYMENT_COUNT; 32] };
unsafe { PAYMENT_COUNT += 1 };
let our_payment_hash = {
let mut sha = Sha256::new();
- sha.input(&payment_preimage[..]);
+ sha.input(&our_payment_preimage[..]);
let mut ret = [0; 32];
sha.result(&mut ret);
ret
};
let mut payment_event = {
- let msgs = origin_node.send_payment(&route, our_payment_hash).unwrap().unwrap();
+ let msgs = origin_node.send_payment(route, our_payment_hash).unwrap().unwrap();
SendEvent {
node_id: expected_route[0].get_our_node_id(),
msgs: vec!(msgs.0),
node.handle_update_add_htlc(&prev_node.get_our_node_id(), &payment_event.msgs[0]).unwrap();
let revoke_and_ack = node.handle_commitment_signed(&prev_node.get_our_node_id(), &payment_event.commitment_msg).unwrap();
- prev_node.handle_revoke_and_ack(&node.get_our_node_id(), &revoke_and_ack).unwrap();
+ assert!(prev_node.handle_revoke_and_ack(&node.get_our_node_id(), &revoke_and_ack).unwrap().is_none());
let events_1 = node.get_and_clear_pending_events();
assert_eq!(events_1.len(), 1);
_ => panic!("Unexpected event"),
};
- node.pending_htlcs_forwardable.lock().unwrap().next_forward = Instant::now();
+ node.channel_state.lock().unwrap().next_forward = Instant::now();
node.process_pending_htlc_forward();
let mut events_2 = node.get_and_clear_pending_events();
match events_2[0] {
Event::PaymentReceived { ref payment_hash, amt } => {
assert_eq!(our_payment_hash, *payment_hash);
- assert_eq!(amt, 1000000);
+ assert_eq!(amt, recv_value);
},
_ => panic!("Unexpected event"),
}
prev_node = node;
}
- assert!(expected_route.last().unwrap().claim_funds(payment_preimage));
+ (our_payment_preimage, our_payment_hash)
+ }
+
+ fn claim_payment(origin_node: &ChannelManager, expected_route: &[&ChannelManager], our_payment_preimage: [u8; 32]) {
+ assert!(expected_route.last().unwrap().claim_funds(our_payment_preimage));
let mut expected_next_node = expected_route.last().unwrap().get_our_node_id();
let mut prev_node = expected_route.last().unwrap();
assert_eq!(expected_next_node, node.get_our_node_id());
match next_msg {
Some(msg) => {
- assert!(node.handle_update_fulfill_htlc(&prev_node.get_our_node_id(), &msg).unwrap().is_none());
+ node.handle_update_fulfill_htlc(&prev_node.get_our_node_id(), &msg).unwrap();
}, None => {}
}
}
assert_eq!(expected_next_node, origin_node.get_our_node_id());
- assert!(origin_node.handle_update_fulfill_htlc(&expected_route.first().unwrap().get_our_node_id(), &next_msg.unwrap()).unwrap().is_none());
+ origin_node.handle_update_fulfill_htlc(&expected_route.first().unwrap().get_our_node_id(), &next_msg.unwrap()).unwrap();
+
+ let events = origin_node.get_and_clear_pending_events();
+ assert_eq!(events.len(), 1);
+ match events[0] {
+ Event::PaymentSent { payment_preimage } => {
+ assert_eq!(payment_preimage, our_payment_preimage);
+ },
+ _ => panic!("Unexpected event"),
+ }
+ }
+
+ fn route_payment(origin_node: &ChannelManager, origin_router: &Router, expected_route: &[&ChannelManager], recv_value: u64) -> ([u8; 32], [u8; 32]) {
+ let route = origin_router.get_route(&expected_route.last().unwrap().get_our_node_id(), &Vec::new(), recv_value, 142).unwrap();
+ assert_eq!(route.hops.len(), expected_route.len());
+ for (node, hop) in expected_route.iter().zip(route.hops.iter()) {
+ assert_eq!(hop.pubkey, node.get_our_node_id());
+ }
+
+ send_along_route(origin_node, route, expected_route, recv_value)
+ }
+
+ fn route_over_limit(origin_node: &ChannelManager, origin_router: &Router, expected_route: &[&ChannelManager], recv_value: u64) {
+ let route = origin_router.get_route(&expected_route.last().unwrap().get_our_node_id(), &Vec::new(), recv_value, 142).unwrap();
+ assert_eq!(route.hops.len(), expected_route.len());
+ for (node, hop) in expected_route.iter().zip(route.hops.iter()) {
+ assert_eq!(hop.pubkey, node.get_our_node_id());
+ }
+
+ let our_payment_preimage = unsafe { [PAYMENT_COUNT; 32] };
+ unsafe { PAYMENT_COUNT += 1 };
+ let our_payment_hash = {
+ let mut sha = Sha256::new();
+ sha.input(&our_payment_preimage[..]);
+ let mut ret = [0; 32];
+ sha.result(&mut ret);
+ ret
+ };
+
+ let err = origin_node.send_payment(route, our_payment_hash).err().unwrap();
+ assert_eq!(err.err, "Cannot send value that would put us over our max HTLC value in flight");
+ }
+
+ fn send_payment(origin_node: &ChannelManager, origin_router: &Router, expected_route: &[&ChannelManager], recv_value: u64) {
+ let our_payment_preimage = route_payment(origin_node, origin_router, expected_route, recv_value).0;
+ claim_payment(origin_node, expected_route, our_payment_preimage);
+ }
+
+ fn send_failed_payment(origin_node: &ChannelManager, origin_router: &Router, expected_route: &[&ChannelManager]) {
+ let route = origin_router.get_route(&expected_route.last().unwrap().get_our_node_id(), &Vec::new(), 1000000, 142).unwrap();
+ assert_eq!(route.hops.len(), expected_route.len());
+ for (node, hop) in expected_route.iter().zip(route.hops.iter()) {
+ assert_eq!(hop.pubkey, node.get_our_node_id());
+ }
+ let our_payment_hash = send_along_route(origin_node, route, expected_route, 1000000).1;
+
+ assert!(expected_route.last().unwrap().fail_htlc_backwards(&our_payment_hash));
+
+ let mut expected_next_node = expected_route.last().unwrap().get_our_node_id();
+ let mut prev_node = expected_route.last().unwrap();
+ let mut next_msg = None;
+ for node in expected_route.iter().rev() {
+ assert_eq!(expected_next_node, node.get_our_node_id());
+ match next_msg {
+ Some(msg) => {
+ node.handle_update_fail_htlc(&prev_node.get_our_node_id(), &msg).unwrap();
+ }, None => {}
+ }
+
+ let events = node.get_and_clear_pending_events();
+ assert_eq!(events.len(), 1);
+ match events[0] {
+ Event::SendFailHTLC { ref node_id, ref msg } => {
+ expected_next_node = node_id.clone();
+ next_msg = Some(msg.clone());
+ },
+ _ => panic!("Unexpected event"),
+ };
+
+ prev_node = node;
+ }
+
+ assert_eq!(expected_next_node, origin_node.get_our_node_id());
+ origin_node.handle_update_fail_htlc(&expected_route.first().unwrap().get_our_node_id(), &next_msg.unwrap()).unwrap();
+
+ let events = origin_node.get_and_clear_pending_events();
+ assert_eq!(events.len(), 1);
+ match events[0] {
+ Event::PaymentFailed { payment_hash } => {
+ assert_eq!(payment_hash, our_payment_hash);
+ },
+ _ => panic!("Unexpected event"),
+ }
}
#[test]
let secp_ctx = Secp256k1::new();
let feeest_1 = Arc::new(test_utils::TestFeeEstimator { sat_per_vbyte: 1 });
- let chain_monitor_1 = Arc::new(test_utils::TestWatchInterface::new());
+ let chain_monitor_1 = Arc::new(chaininterface::ChainWatchInterfaceUtil::new());
let chan_monitor_1 = Arc::new(test_utils::TestChannelMonitor{});
+ let tx_broadcaster_1 = Arc::new(test_utils::TestBroadcaster{txn_broadcasted: Mutex::new(Vec::new())});
let node_id_1 = {
let mut key_slice = [0; 32];
rng.fill_bytes(&mut key_slice);
SecretKey::from_slice(&secp_ctx, &key_slice).unwrap()
};
- let node_1 = ChannelManager::new(node_id_1.clone(), 0, true, Network::Testnet, feeest_1.clone(), chan_monitor_1.clone(), chain_monitor_1.clone()).unwrap();
+ let node_1 = ChannelManager::new(node_id_1.clone(), 0, true, Network::Testnet, feeest_1.clone(), chan_monitor_1.clone(), chain_monitor_1.clone(), tx_broadcaster_1.clone()).unwrap();
let router_1 = Router::new(PublicKey::from_secret_key(&secp_ctx, &node_id_1).unwrap());
let feeest_2 = Arc::new(test_utils::TestFeeEstimator { sat_per_vbyte: 1 });
- let chain_monitor_2 = Arc::new(test_utils::TestWatchInterface::new());
+ let chain_monitor_2 = Arc::new(chaininterface::ChainWatchInterfaceUtil::new());
let chan_monitor_2 = Arc::new(test_utils::TestChannelMonitor{});
+ let tx_broadcaster_2 = Arc::new(test_utils::TestBroadcaster{txn_broadcasted: Mutex::new(Vec::new())});
let node_id_2 = {
let mut key_slice = [0; 32];
rng.fill_bytes(&mut key_slice);
SecretKey::from_slice(&secp_ctx, &key_slice).unwrap()
};
- let node_2 = ChannelManager::new(node_id_2.clone(), 0, true, Network::Testnet, feeest_2.clone(), chan_monitor_2.clone(), chain_monitor_2.clone()).unwrap();
+ let node_2 = ChannelManager::new(node_id_2.clone(), 0, true, Network::Testnet, feeest_2.clone(), chan_monitor_2.clone(), chain_monitor_2.clone(), tx_broadcaster_2.clone()).unwrap();
let router_2 = Router::new(PublicKey::from_secret_key(&secp_ctx, &node_id_2).unwrap());
let feeest_3 = Arc::new(test_utils::TestFeeEstimator { sat_per_vbyte: 1 });
- let chain_monitor_3 = Arc::new(test_utils::TestWatchInterface::new());
+ let chain_monitor_3 = Arc::new(chaininterface::ChainWatchInterfaceUtil::new());
let chan_monitor_3 = Arc::new(test_utils::TestChannelMonitor{});
+ let tx_broadcaster_3 = Arc::new(test_utils::TestBroadcaster{txn_broadcasted: Mutex::new(Vec::new())});
let node_id_3 = {
let mut key_slice = [0; 32];
rng.fill_bytes(&mut key_slice);
SecretKey::from_slice(&secp_ctx, &key_slice).unwrap()
};
- let node_3 = ChannelManager::new(node_id_3.clone(), 0, true, Network::Testnet, feeest_3.clone(), chan_monitor_3.clone(), chain_monitor_3.clone()).unwrap();
+ let node_3 = ChannelManager::new(node_id_3.clone(), 0, true, Network::Testnet, feeest_3.clone(), chan_monitor_3.clone(), chain_monitor_3.clone(), tx_broadcaster_3.clone()).unwrap();
let router_3 = Router::new(PublicKey::from_secret_key(&secp_ctx, &node_id_3).unwrap());
let feeest_4 = Arc::new(test_utils::TestFeeEstimator { sat_per_vbyte: 1 });
- let chain_monitor_4 = Arc::new(test_utils::TestWatchInterface::new());
+ let chain_monitor_4 = Arc::new(chaininterface::ChainWatchInterfaceUtil::new());
let chan_monitor_4 = Arc::new(test_utils::TestChannelMonitor{});
+ let tx_broadcaster_4 = Arc::new(test_utils::TestBroadcaster{txn_broadcasted: Mutex::new(Vec::new())});
let node_id_4 = {
let mut key_slice = [0; 32];
rng.fill_bytes(&mut key_slice);
SecretKey::from_slice(&secp_ctx, &key_slice).unwrap()
};
- let node_4 = ChannelManager::new(node_id_4.clone(), 0, true, Network::Testnet, feeest_4.clone(), chan_monitor_4.clone(), chain_monitor_4.clone()).unwrap();
+ let node_4 = ChannelManager::new(node_id_4.clone(), 0, true, Network::Testnet, feeest_4.clone(), chan_monitor_4.clone(), chain_monitor_4.clone(), tx_broadcaster_4.clone()).unwrap();
let router_4 = Router::new(PublicKey::from_secret_key(&secp_ctx, &node_id_4).unwrap());
// Create some initial channels
router.handle_channel_update(&chan_announcement_3.2).unwrap();
}
- // Send some payments
- send_payment(&node_1, &router_1, &vec!(&*node_2, &*node_3, &*node_4)[..]);
- send_payment(&node_2, &router_2, &vec!(&*node_3, &*node_4)[..]);
- send_payment(&node_4, &router_4, &vec!(&*node_3, &*node_2, &*node_1)[..]);
+ // Rebalance the network a bit by relaying one payment through all the channels...
+ send_payment(&node_1, &router_1, &vec!(&*node_2, &*node_3, &*node_4)[..], 8000000);
+ send_payment(&node_1, &router_1, &vec!(&*node_2, &*node_3, &*node_4)[..], 8000000);
+ send_payment(&node_1, &router_1, &vec!(&*node_2, &*node_3, &*node_4)[..], 8000000);
+ send_payment(&node_1, &router_1, &vec!(&*node_2, &*node_3, &*node_4)[..], 8000000);
+ send_payment(&node_1, &router_1, &vec!(&*node_2, &*node_3, &*node_4)[..], 8000000);
+
+ // Send some more payments
+ send_payment(&node_2, &router_2, &vec!(&*node_3, &*node_4)[..], 1000000);
+ send_payment(&node_4, &router_4, &vec!(&*node_3, &*node_2, &*node_1)[..], 1000000);
+ send_payment(&node_4, &router_4, &vec!(&*node_3, &*node_2)[..], 1000000);
+
+ // Test failure packets
+ send_failed_payment(&node_1, &router_1, &vec!(&*node_2, &*node_3, &*node_4)[..]);
// Add a new channel that skips 3
let chan_announcement_4 = create_chan_between_nodes(&node_2, &chain_monitor_2, &node_4, &chain_monitor_4);
router.handle_channel_update(&chan_announcement_4.2).unwrap();
}
- send_payment(&node_1, &router_1, &vec!(&*node_2, &*node_4)[..]);
+ send_payment(&node_1, &router_1, &vec!(&*node_2, &*node_4)[..], 1000000);
+ send_payment(&node_3, &router_3, &vec!(&*node_4)[..], 1000000);
+ send_payment(&node_2, &router_2, &vec!(&*node_4)[..], 8000000);
+ send_payment(&node_2, &router_2, &vec!(&*node_4)[..], 8000000);
+ send_payment(&node_2, &router_2, &vec!(&*node_4)[..], 8000000);
+ send_payment(&node_2, &router_2, &vec!(&*node_4)[..], 8000000);
+ send_payment(&node_2, &router_2, &vec!(&*node_4)[..], 8000000);
+
+ // Do some rebalance loop payments, simultaneously
+ let mut hops = Vec::with_capacity(3);
+ hops.push(RouteHop {
+ pubkey: node_3.get_our_node_id(),
+ short_channel_id: chan_announcement_2.1.contents.short_channel_id,
+ fee_msat: 0,
+ cltv_expiry_delta: chan_announcement_3.1.contents.cltv_expiry_delta as u32
+ });
+ hops.push(RouteHop {
+ pubkey: node_4.get_our_node_id(),
+ short_channel_id: chan_announcement_3.1.contents.short_channel_id,
+ fee_msat: 0,
+ cltv_expiry_delta: chan_announcement_4.2.contents.cltv_expiry_delta as u32
+ });
+ hops.push(RouteHop {
+ pubkey: node_2.get_our_node_id(),
+ short_channel_id: chan_announcement_4.1.contents.short_channel_id,
+ fee_msat: 1000000,
+ cltv_expiry_delta: 142,
+ });
+ hops[1].fee_msat = chan_announcement_4.2.contents.fee_base_msat as u64 + chan_announcement_4.2.contents.fee_proportional_millionths as u64 * hops[2].fee_msat as u64 / 1000000;
+ hops[0].fee_msat = chan_announcement_3.1.contents.fee_base_msat as u64 + chan_announcement_3.1.contents.fee_proportional_millionths as u64 * hops[1].fee_msat as u64 / 1000000;
+ let payment_preimage_1 = send_along_route(&node_2, Route { hops }, &vec!(&*node_3, &*node_4, &*node_2)[..], 1000000).0;
+
+ let mut hops = Vec::with_capacity(3);
+ hops.push(RouteHop {
+ pubkey: node_4.get_our_node_id(),
+ short_channel_id: chan_announcement_4.1.contents.short_channel_id,
+ fee_msat: 0,
+ cltv_expiry_delta: chan_announcement_3.2.contents.cltv_expiry_delta as u32
+ });
+ hops.push(RouteHop {
+ pubkey: node_3.get_our_node_id(),
+ short_channel_id: chan_announcement_3.1.contents.short_channel_id,
+ fee_msat: 0,
+ cltv_expiry_delta: chan_announcement_2.2.contents.cltv_expiry_delta as u32
+ });
+ hops.push(RouteHop {
+ pubkey: node_2.get_our_node_id(),
+ short_channel_id: chan_announcement_2.1.contents.short_channel_id,
+ fee_msat: 1000000,
+ cltv_expiry_delta: 142,
+ });
+ hops[1].fee_msat = chan_announcement_2.2.contents.fee_base_msat as u64 + chan_announcement_2.2.contents.fee_proportional_millionths as u64 * hops[2].fee_msat as u64 / 1000000;
+ hops[0].fee_msat = chan_announcement_3.2.contents.fee_base_msat as u64 + chan_announcement_3.2.contents.fee_proportional_millionths as u64 * hops[1].fee_msat as u64 / 1000000;
+ let payment_preimage_2 = send_along_route(&node_2, Route { hops }, &vec!(&*node_4, &*node_3, &*node_2)[..], 1000000).0;
+
+ // Claim the rebalances...
+ claim_payment(&node_2, &vec!(&*node_4, &*node_3, &*node_2)[..], payment_preimage_2);
+ claim_payment(&node_2, &vec!(&*node_3, &*node_4, &*node_2)[..], payment_preimage_1);
+
+ // Add a duplicate new channel from 2 to 4
+ let chan_announcement_5 = create_chan_between_nodes(&node_2, &chain_monitor_2, &node_4, &chain_monitor_4);
+ for router in vec!(&router_1, &router_2, &router_3, &router_4) {
+ assert!(router.handle_channel_announcement(&chan_announcement_5.0).unwrap());
+ router.handle_channel_update(&chan_announcement_5.1).unwrap();
+ router.handle_channel_update(&chan_announcement_5.2).unwrap();
+ }
+
+ // Send some payments across both channels
+ let payment_preimage_3 = route_payment(&node_1, &router_1, &vec!(&*node_2, &*node_4)[..], 3000000).0;
+ let payment_preimage_4 = route_payment(&node_1, &router_1, &vec!(&*node_2, &*node_4)[..], 3000000).0;
+ let payment_preimage_5 = route_payment(&node_1, &router_1, &vec!(&*node_2, &*node_4)[..], 3000000).0;
+
+ route_over_limit(&node_1, &router_1, &vec!(&*node_2, &*node_4)[..], 3000000);
+
+ //TODO: Test that routes work again here as we've been notified that the channel is full
+
+ claim_payment(&node_1, &vec!(&*node_2, &*node_4)[..], payment_preimage_3);
+ claim_payment(&node_1, &vec!(&*node_2, &*node_4)[..], payment_preimage_4);
+ claim_payment(&node_1, &vec!(&*node_2, &*node_4)[..], payment_preimage_5);
+
+ // Close down the channels...
+ close_channel(&node_1, &tx_broadcaster_1, &node_2, &tx_broadcaster_2, &chan_announcement_1.3, true);
+ close_channel(&node_2, &tx_broadcaster_2, &node_3, &tx_broadcaster_3, &chan_announcement_2.3, false);
+ close_channel(&node_3, &tx_broadcaster_3, &node_4, &tx_broadcaster_4, &chan_announcement_3.3, true);
+ close_channel(&node_2, &tx_broadcaster_2, &node_4, &tx_broadcaster_4, &chan_announcement_4.3, false);
// Check that we processed all pending events
for node in vec!(&node_1, &node_2, &node_3, &node_4) {
projects / rust-lightning / blobdiff