In this commit, we modify our default local feature bits to require the
Data Loss Protection (DLP) feature to be active. Once full Static
Channel Backups are implemented, if we connect to a peer that doesn't
follow the DLP protocol, then the SCBs are useless, as we may not be
able to recover funds. As a result, in prep for full SCB deployment,
we'll now ensure that any peer we connect to, knows of the DLP bit. This
could be a bit more relaxed and allow _connections_ to non-DLP peers,
but reject channel requests to/from them. However, this implementation is
much simpler.
Previously, nursery generated and published its own sweep txes. It
stored the sweep tx in nursery_store to prevent a new tx with a new
sweep address from being generated on restart.
In this commit, sweep generation and publication is removed from nursery
and delegated to the sweeper. Also the confirmation notification is
received from the sweeper.
In this commit, we remove the per channel `sigPool` within the
`lnwallet.LightningChannel` struct. With this change, we ensure that as
the number of channels grows, the number of gouroutines idling in the
sigPool stays constant. It's the case that currently on the daemon, most
channels are likely inactive, with only a hand full actually
consistently carrying out channel updates. As a result, this change
should reduce the amount of idle CPU usage, as we have less active
goroutines in select loops.
In order to make this change, the `SigPool` itself has been publicly
exported such that outside callers can make a `SigPool` and pass it into
newly created channels. Since the sig pool now lives outside the
channel, we were also able to do away with the Stop() method on the
channel all together.
Finally, the server is the sub-system that is currently responsible for
managing the `SigPool` within lnd.
In this commit, we update the genNodeAnnouncement method to also write
an updated version of the node announcment to disk. Before this commit,
we would update the in memory version, but then never write the new
version to disk. As a result, when connecting to new peers, we would
never propagate the new version of this announcement to the network.
In this commit, we modify the newly introduced UtxoSweeper.CreateSweepTx
to accept the confirmation target as a param of the method rather than a
struct level variable. We do this as this allows each caller to decide
at sweep time, what the fee rate should be, rather than using a global
value that is meant to work in all scenarios. For example, anytime
we're sweeping an output with a CLTV lock that's has a dependant
transaction we need to sweep/cancel, we may require a higher fee rate
than a regular force close with a CSV output.
In this commit, we also check ErrEdgeNotFound when attempting to send an
active/inactive channel update for a channel to the network. We do this
as it's possible that a channel has confirmed, but it still does not
meet the required number of confirmations to be publicly announced.
In this commit IncubateOutputs are given an extra parameter
broadcastHeight, which is passed from the server and used when called
registerPresschoolConf.
Earlier the utxonursery used the bestHeight as height hint in this case,
which would be wrong in the cases where we got outputs for incubation
which was confirmed below the best height.
over Tor
In this commit, we fix a small bug where we would attempt to start the
Tor controller even if we were not requested to automatically create and
onion service in order to listen for inbound connections over Tor.
In this commit, we restrict the persistent connection logic on startup
to only attempt to establish connections to Tor addresses if Tor
outbound support is enabled. Otherwise, we'll continually attempt to
reach the address even though we never will.
In this commit, we remove signaling for initial routing
dumps, which create unnecessary log spam, bandwidth, and
CPU. Now that gossip syncing is in full force, we will
instead opt to use the more efficient querying/set
reconciliation. Other nodes may still request initial
gossip sync from us, and we will respond.
This commit modifies the connection peer backoff
logic such that it will always backoff for "unstable"
peers. Unstable in this context is determined by
connections whose duration is shorter than 10
minutes. If a disconnect happens with a peer
whose connection lasts longer than 10 minutes,
we will scale back our stored backoff for that peer.
This resolves an issue that would result in a tight
connection loop with remote peers. This stemmed
from the connection duration being very short,
and always driving the backoff to the default
backoff of 1 second. Short connections like
this are now caught by the stable connection
threshold.
This also modifies the computation on the
backoff relaxation to subtract the connection
duration after applying randomized exponential
backoff, which offers better stability when
the connection duration and backoff are roughly
equal.
In this commit, we avoid logging an error when the links associated with
a peer are not found within its termination watcher. We do this to
prevent a benign log message as the links have already been removed from
the switch.
