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Fix reserve check on HTLC receive/send

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This commit is contained in:
Matt Corallo 2018-03-21 18:49:33 -04:00
parent 298557c891
commit 1bb4f44bd6
1 changed files with 5 additions and 3 deletions
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8
src/ln/channel.rs
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@ -1012,8 +1012,10 @@ impl Channel {
if htlc_inbound_value_msat + msg.amount_msat > Channel::get_our_max_htlc_value_in_flight_msat(self.channel_value_satoshis) {
return Err(HandleError{err: "Remote HTLC add would put them over their max HTLC value in flight", msg: None});
}
// Check our_channel_reserve_satoshis:
if htlc_inbound_value_msat + htlc_outbound_value_msat + msg.amount_msat > (self.channel_value_satoshis - Channel::get_our_channel_reserve_satoshis(self.channel_value_satoshis)) * 1000 {
// Check our_channel_reserve_satoshis (we're getting paid, so they have to at least meet
// the reserve_satoshis we told them to always have as direct payment so that they lose
// something if we punish them for broadcasting an old state).
if htlc_inbound_value_msat + htlc_outbound_value_msat + msg.amount_msat + self.value_to_self_msat > (self.channel_value_satoshis - Channel::get_our_channel_reserve_satoshis(self.channel_value_satoshis)) * 1000 {
return Err(HandleError{err: "Remote HTLC add would put them over their reserve value", msg: None});
}
if self.next_remote_htlc_id != msg.htlc_id {
@ -1591,7 +1593,7 @@ impl Channel {
return Err(HandleError{err: "Cannot send value that would put us over our max HTLC value in flight", msg: None});
}
// Check their_channel_reserve_satoshis:
if htlc_outbound_value_msat + amount_msat > (self.channel_value_satoshis - self.their_channel_reserve_satoshis) * 1000 - htlc_inbound_value_msat {
if htlc_inbound_value_msat + htlc_outbound_value_msat + amount_msat + (self.channel_value_satoshis * 1000 - self.value_to_self_msat) > (self.channel_value_satoshis - self.their_channel_reserve_satoshis) * 1000 {
return Err(HandleError{err: "Cannot send value that would put us over our reserve value", msg: None});
}