if msg.channel_reserve_satoshis > msg.funding_satoshis {
return Err(ChannelError::Close(format!("Bogus channel_reserve_satoshis ({}). Must be not greater than funding_satoshis: {}", msg.channel_reserve_satoshis, msg.funding_satoshis)));
}
- let funding_value = (msg.funding_satoshis - msg.channel_reserve_satoshis) * 1000;
- if msg.push_msat > funding_value {
- return Err(ChannelError::Close(format!("push_msat {} was larger than funding value {}", msg.push_msat, funding_value)));
+ let full_channel_value_msat = (msg.funding_satoshis - msg.channel_reserve_satoshis) * 1000;
+ if msg.push_msat > full_channel_value_msat {
+ return Err(ChannelError::Close(format!("push_msat {} was larger than channel amount minus reserve ({})", msg.push_msat, full_channel_value_msat)));
}
if msg.dust_limit_satoshis > msg.funding_satoshis {
return Err(ChannelError::Close(format!("dust_limit_satoshis {} was larger than funding_satoshis {}. Peer never wants payout outputs?", msg.dust_limit_satoshis, msg.funding_satoshis)));
}
- let full_channel_value_msat = (msg.funding_satoshis - msg.channel_reserve_satoshis) * 1000;
if msg.htlc_minimum_msat >= full_channel_value_msat {
return Err(ChannelError::Close(format!("Minimum htlc value ({}) was larger than full channel value ({})", msg.htlc_minimum_msat, full_channel_value_msat)));
}
if holder_selected_channel_reserve_satoshis < MIN_CHAN_DUST_LIMIT_SATOSHIS {
return Err(ChannelError::Close(format!("Suitable channel reserve not found. remote_channel_reserve was ({}). dust_limit_satoshis is ({}).", holder_selected_channel_reserve_satoshis, MIN_CHAN_DUST_LIMIT_SATOSHIS)));
}
+ if holder_selected_channel_reserve_satoshis * 1000 >= full_channel_value_msat {
+ return Err(ChannelError::Close(format!("Suitable channel reserve not found. remote_channel_reserve was ({}). Channel value is ({} - {}).", holder_selected_channel_reserve_satoshis, full_channel_value_msat, msg.push_msat)));
+ }
if msg.channel_reserve_satoshis < MIN_CHAN_DUST_LIMIT_SATOSHIS {
log_debug!(logger, "channel_reserve_satoshis ({}) is smaller than our dust limit ({}). We can broadcast stale states without any risk, implying this channel is very insecure for our counterparty.",
msg.channel_reserve_satoshis, MIN_CHAN_DUST_LIMIT_SATOSHIS);
}
/// Allowed in any state (including after shutdown)
- #[cfg(test)]
pub fn get_holder_htlc_minimum_msat(&self) -> u64 {
self.holder_htlc_minimum_msat
}
+ /// Allowed in any state (including after shutdown), but will return none before TheirInitSent
+ pub fn get_holder_htlc_maximum_msat(&self) -> Option<u64> {
+ self.get_htlc_maximum_msat(self.holder_max_htlc_value_in_flight_msat)
+ }
+
/// Allowed in any state (including after shutdown)
pub fn get_announced_htlc_max_msat(&self) -> u64 {
return cmp::min(
self.counterparty_htlc_minimum_msat
}
+ /// Allowed in any state (including after shutdown), but will return none before TheirInitSent
+ pub fn get_counterparty_htlc_maximum_msat(&self) -> Option<u64> {
+ self.get_htlc_maximum_msat(self.counterparty_max_htlc_value_in_flight_msat)
+ }
+
+ fn get_htlc_maximum_msat(&self, party_max_htlc_value_in_flight_msat: u64) -> Option<u64> {
+ self.counterparty_selected_channel_reserve_satoshis.map(|counterparty_reserve| {
+ let holder_reserve = self.holder_selected_channel_reserve_satoshis;
+ cmp::min(
+ (self.channel_value_satoshis - counterparty_reserve - holder_reserve) * 1000,
+ party_max_htlc_value_in_flight_msat
+ )
+ })
+ }
+
pub fn get_value_satoshis(&self) -> u64 {
self.channel_value_satoshis
}