We shouldn't insist on an exact reponse match: they can batch it and send
a whole batch, as long as it overlaps what we ask.
We also change to a bitmap to save some memory.
This isn't note in the CHANGELOG since we don't actually send gossip
range queries except for testing.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Messages from a peer may be invalid in many ways: we send an error
packet in that case. Rather than internally calling peer_error,
however, we make it explicit by having the handle_ functions return
NULL or an error packet.
Messages from the daemon itself should not be invalid: we log an error
and close the fd to them if it is. Previously we logged an error but
didn't kill them.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
It means an extra allocation at startup, but it means we can hide the definition,
and use standard patterns (new_daemon_conn and typesafe callbacks).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We spend quite a bit of time in libsecp256k1 moving them to and from
DER encoding. With a bit of care, we can transfer the raw bytes from
gossipd and manually decode them so a malformed one can't make us
abort().
Before:
real 0m0.629000-0.695000(0.64985+/-0.019)s
After:
real 0m0.359000-0.433000(0.37645+/-0.023)s
At this point, the main issues are 11% of time spent in ccan/io's
backend_wake (I tried using a hash table there, but that actually makes
the small-number-of-fds case slower), and 65% of gossipd's time is
in marshalling the response (all those tal_resize add up!).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Usually Travis triggers corner cases because it's so slow, but this
time the moons aligned, and it managed to fail test_node_reannounce
because it generated the updated node_announcement with the same
timestamp as the old one.
This is because we only updated "last_announce_timestamp" when
we generated the announcement, not when we got it off the wire or
loaded it from the gossip store.
The fix is to ask the routing code what the latest timestamp is;
we could still generate a clashing timestamp if (1) the gossip store
is lost, and (2) we restart within one second. Hard to care.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Have c-lightning nodes send out the largest value for
`htlc_maximum_msat` that makes sense, ie the lesser of
the peer's max_inflight_htlc value or the total channel
capacity minus the total channel reserve.
We initialize it to 30 seconds, but it's *always* overridden by the
gossip_init message (and usually to 60 seconds, so it's doubly
misleading).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Gossipd provided a generic "get endpoints of this scid" and we only
use it in one place: to look up htlc forwards. But lightningd just
assumed that one would be us.
Instead, provide a simpler API which only returns the peer node
if any, and now we handle it much more gracefully.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We don't create unannouncable channels, but other implementations can.
Not only is it rude to expose these via invoices, it's probably not
useable anyway.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
globalfeatures should not be accessed if we haven't received a
channel_update. Treat it like the other fields which are only
initialized and marshalled/unmarshalled if the timestamp is positive.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
And use ARRAY_SIZE() everywhere which will break compile if it's not a
literal array, plus assertions that it's the same length.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
For routeboost, we want to select from all our enabled channels with
sufficient incoming capacity. Gossipd knows which are enabled (ie. we
have received a `channel_update` from the peer), but doesn't know the
current incoming capacity.
So we get gossipd to give us all the candidates, and lightningd
selects from those.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Otherwise, if we don't announce the last node, we'll not flush this
out; it will be delayed until the next time we send gossip!
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is consistent: we don't broadcast a channel_announce until we've seen
a channel_update, so we probably shouldn't advertise it here.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We do this a lot, and had boutique helpers in various places. So add
a more generic one; for convenience it returns a pointer to the new
end element.
I prefer the name tal_arr_expand to tal_arr_append, since it's up to
the caller to populate the new array entry.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We have a lot of infrastructure to delay local channel_updates to
avoid spamming on each peer reconnect; we had to keep tracking of
pending ones though, in case we needed the very latest for sending an
error when failing an HTLC.
Instead, it's far simpler to set the local_disabled flag on a channel
when we disconnect, but only send a disabling channel_update if we
actually fail an HTLC.
Note: handle_channel_update() TAKES update (due to tal_arr_dup), but we
didn't use that before. Now we do, add annotation.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
BOLT 7's been updated to split the flags field in `channel_update`
into two: `channel_flags` and `message_flags`. This changeset does the
minimal necessary to get to building with the new flags.
That matches the other CSV names (HSM was the first, so it was written
before the pattern emerged).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We would never complete further ping commands if we had < responses
than pings. Oops.
Fixes: #1928
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
@renepickhardt: why is it actually lightningd.c with a d but hsm.c without d ?
And delete unused gossipd/gossip.h.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
