We use a "softref" which is a magic pointer which gets NULL'ed when
the object is freed. But it's heavy, and a bit tricky to use, and we
only use it in gossipd.
Instead, keep the nodeid, and do a lookup (now that's fast) if we want
to credit the sender for valid gossip.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This was eliminated this morning in the latest spec. We still accept them,
we just don't produce them any more.
Changelog-Removed: Protocol: We no longer create gossip messages which use zlib encoding (we still understand them, for now!)
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We do this (send warnings) in almost all cases anyway, so mainly this
is a textual update, but there are some changes:
1. Send ERROR not WARNING if they send a malformed commitment secret.
2. Send WARNING not ERROR if they get the shutdown_scriptpubkey wrong (vs upfront)
3. Send WARNING not ERROR if they send a bad shutdown_scriptpubkey (e.g. p2pkh in future)
4. Rename some vars 'err' to 'warn' to make it clear we send a warning.
This means test_option_upfront_shutdown_script can be made reliable, too,
and it now warns and doesn't automatically close channel.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Requiring the caller to allocate them is ugly, and differs from
other types.
This means we need a context arg if we don't have one already.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
And turn "" includes into full-path (which makes it easier to put
config.h first, and finds some cases check-includes.sh missed
previously).
config.h sets _GNU_SOURCE which really needs to be done before any
'#includes': we mainly got away with it with glibc, but other platforms
like Alpine may have stricter requirements.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Before:
Ten builds, laptop -j5, no ccache:
```
real 0m36.686000-38.956000(38.608+/-0.65)s
user 2m32.864000-42.253000(40.7545+/-2.7)s
sys 0m16.618000-18.316000(17.8531+/-0.48)s
```
Ten builds, laptop -j5, ccache (warm):
```
real 0m8.212000-8.577000(8.39989+/-0.13)s
user 0m12.731000-13.212000(12.9751+/-0.17)s
sys 0m3.697000-3.902000(3.83722+/-0.064)s
```
After:
Ten builds, laptop -j5, no ccache: 8% faster
```
real 0m33.802000-35.773000(35.468+/-0.54)s
user 2m19.073000-27.754000(26.2542+/-2.3)s
sys 0m15.784000-17.173000(16.7165+/-0.37)s
```
Ten builds, laptop -j5, ccache (warm): 1% faster
```
real 0m8.200000-8.485000(8.30138+/-0.097)s
user 0m12.485000-13.100000(12.7344+/-0.19)s
sys 0m3.702000-3.889000(3.78787+/-0.056)s
```
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We assume if they set this to 0 (which nobody did previously), they're
using it as a modern flag and use it to indicate when they're
finished. Otherwise, we count how many blocks they've sent and use
that to determine whether they've finished.
See: https://github.com/lightningnetwork/lightning-rfc/pull/826
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Changed: Protocol: we use `sync_complete` for gossip range query replies, with detection for older spec nodes.
No more sending "all-channel" errors; in particular, gossipd now only
sends warnings (which make us hang up), not errors, and peer_connected
rejections are warnings (and disconnect), not errors.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Changed: Plugins: `peer_connected` rejections now send a warning, not an error, to the peer.
We tried to send an absurdly-long message, because our limit
was really large, as we were subtracting the tlv length, not
the tlv overhead.
In addition, we were treating the array as a tal object, which
it isn't if the offset is non-zero.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We used to create the entire reply, the if it was too big, split in
half and retry.
Now that the main network is larger, this always happens with a full
request, which is inefficient.
Instead, produce a reply assuming no compression, then compress as a
bonus. This is simpler and more efficient, at cost of sending more
packets.
I also renamed an internal dev var to make it clearer.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
It's not (yet?) compulsory to have the timestamps, but handing them around
together makes sense (a missing timestamp has the same effect as a zero
timestamp).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The spec (since d4bafcb67dcf1e4de4d16224ea4de6b543ae73bf in March
2020) requires that reply_channel_range be in order (and all
implementations did this anyway).
But when I tried this, I found that LND doesn't (always) obey this,
since don't divide on block boundaries. So we have to loosen the
constraints here a little.
We got rid of the old LND compat handling though, since everyone should
now be upgraded (there are CVEs out for older LNDs).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Removed: Support for receiving full gossip from ancient LND nodes.
This avoids overwriting the ones in git, and generally makes things neater.
We have convenience headers wire/peer_wire.h and wire/onion_wire.h to
avoid most #ifdefs: simply include those.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The main change here is that the previously-optional open/accept
fields and reestablish fields are now compulsory (everyone was
including them anyway). In fact, the open/accept is a TLV
because it was actually the same format.
For more details, see lightning-rfc/f068dd0d8dfa5ae75feedd99f269e23be4777381
Changelog-Removed: protocol: support for optioned form of reestablish messages now compulsory.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
When we have only a single member in a TLV (e.g. an optional u64),
wrapping it in a struct is awkward. This changes it to directly
access those fields.
This is not only more elegant (60 fewer lines), it would also be
more cache friendly. That's right: cache hot singles!
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We've been sending them errors for invalid replies; instead, this works
around it.
Changelog-Added: Workaround LND's reply_channel_range issues instead of sending error.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
I thought LND had a bug, but turns out it doesn't like out-of-order
short_channel_ids: in fact, the spec says they have to be in order!
This means we use uintmap instead of a htable for unknown_scids and
stale_scids so they're nicely ordered.
But our nodes-missing-announcements probe is harder since they can
also contain duplicates: we switch that to iterate through channels
rather than nodes.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We eliminate the "need peer" states and instead check if the
random_peer_softref has been cleared.
We can also unify our restart handlers for all these cases; even the
probe_scids case, by giving gossip credit for the scids as they come
in (at a discount, since scids are 8 bytes vs the ~200 bytes for
normal gossip messages).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This asks peers to append the timestamps or checksums: if it has
gossip_query_ex support, it will, otherwise it's ignored.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
If the peer supports `gossip_query_ex` we can use query_flags to simply
request the node_announcements when probing for nodes, rather than
getting everything. If a peer doesn't support `gossip_query_ex` then
it's harmless to add it.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This encoding scheme is no longer just used for short_channel_ids, so make
the names more generic.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The only real change is dump_gossip() used to call
maybe_create_next_scid_reply(), but now I've simply renamed
that to maybe_send_query_responses() and we call it directly.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
