See https://github.com/lightningnetwork/lightning-rfc/pull/767
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Changed: Protocol: channels now pruned after two weeks unless both peers refresh it (see lightning-rfc#767)
It's not all that rare to do these operations, and requiring annotations
for it is a little painful.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
There were no channel updates in my log; because sendonion doesn't know the
actual node_ids or channel_ids, we can't tell gossipd what node/channel it was
so it can no longer remove them on PERM errors.
However, we can tell it the error message so it can apply the update.
Fixes: #3877
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>
Since we now over-write the wally malloc/free functions, we need to do
so for tests as well. Here we pull up all of the common setup/teardown
logic into a separate place, and update the tests that use libwally to
use the new common_setup core
Changelog-None
This saves us keeping it in memory (so far, no channels have features), but
lets us optimize that case so we don't need to hit the disk for most of the
channels in listchannels.
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>
This will be used when we want to specify these in a route. But for now, they
only alter gossipd, which always sets them to NULL.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Use `LC_ALL=C sort` instead of `sort` so that mocks get sorted in
the same way on all developers' environments.
Re-record the result of `make update-mocks`.
Changelog-None
It's almost always "their_features" and "our_features" respectively, so
make those names clear.
Suggested-by: @cdecker
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Turns out that unnecessary: all callers can access the feature_set,
so make it much more like a normal primitive.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is to prepare for dynamic features, including making plugins first
class citizens at setting them.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
```
clang10 -DBINTOPKGLIBEXECDIR="\"../libexec/c-lightning\"" -Wall -Wundef -Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes -Wold-style-definition -Werror -std=gnu11 -g -fstack-protector -I ccan -I external/libwally-core/include/ -I external/libwally-core/src/secp256k1/include/ -I external/jsmn/ -I external/libbacktrace/ -I external/libbacktrace-build -I . -I/usr/local/include -DCCAN_TAKE_DEBUG=1 -DCCAN_TAL_DEBUG=1 -DCCAN_JSON_OUT_DEBUG=1 -DSHACHAIN_BITS=48 -DJSMN_PARENT_LINKS -DBUILD_ELEMENTS=1 -DBINTOPKGLIBEXECDIR="\"../libexec/c-lightning\"" -c -o gossipd/routing.o gossipd/routing.c
gossipd/routing.c:651:10: error: implicit conversion from 'unsigned long' to 'double' changes value
from 18446744073709551615 to 18446744073709551616 [-Werror,-Wimplicit-int-float-conversion]
if (r > UINT64_MAX)
~ ^~~~~~~~~~
```
It is ok to change the values because they are approximate anyway. Thus,
explicitly typecast to `double` to silence the warning without changing
behavior.
Changelog-None
Even without optimization, it's faster to walk all the channels than
ping another daemon and wait for the response.
Changelog-Changed: Forwarding messages is now much faster (less inter-daemon traffic)
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The idea is that gossipd can give us the cupdate we need for an error, and
we wire things up so that we ask for it (async) just before we send the
error to the subdaemon.
I tried many other things, but they were all too high-risk.
1. We need to ask gossipd every time, since it produces these lazily
(in particular, it doesn't actually generate an offline update unless
the channel is used).
2. We can't do async calls in random places, since we'll end up with
an HTLC in limbo. What if another path tries to fail it at the same time?
3. This allows us to use a temporary_node_failure error, and upgrade it
when gossipd replies. This doesn't change any existing assumptions.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is a common thing to do, so create a macro.
Unfortunately, it still needs the type arg, because the paramter may
be const, and the return cannot be, and C doesn't have a general
"(-const)" cast.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
common should not include specific per-daemon files. Turns out this
caused a lot of indirect includes to be exposed.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Before this patch we used to send `double`s over the wire by just
copying them. This is not portable because the internal represenation
of a `double` is implementation specific.
Instead of this, multiply any floating-point numbers that come from
the outside (e.g. JSONs) by 1 million and round them to integers when
handling them.
* Introduce a new param_millionths() that expects a floating-point
number and returns it multipled by 1000000 as an integer.
* Replace param_double() and param_percent() with param_millionths()
* Previously the riskfactor would be allowed to be negative, which must
have been unintentional. This patch changes that to require a
non-negative number.
Changelog-None
I hadn't realized that lightningd asks gossipd every time we forward
a payment. But I'm going to abuse it here to get the latest channel_update,
otherwise (as lightningd takes over error message generation) lightningd
needs to do an async request at various painful points.
So have gossipd tell us the lastest update (stripped so compatible with
the strange in-onion-error format).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Now that we have json_stream in common/, we can move all the related
helpers from lightningd/json to common/json. This way everyone can
benefit of them (including libplugin, the plugins themselves,
potentially lightning-cli), not lightningd alone!
Note that the Makefile of the common/test/ had to be modified, because
the new helpers make use of common/wireaddr... Which turns out to
\#include <lightingd/lightningd.h> ! So we couldnt just include the .c
and add mocks if we redefined some structs (hello run-param).
This makes it clear we're dealing with a message which is a wrapped error
reply (needing unwrap_onionreply), not an already-wrapped one.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This lets us do more flexible filtering in the next patch. But it also
keeps some weird logic out of gossipd.
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>
This is ignored in subdaemons which are per-peer, but very useful for
multi-peer daemons like connectd and gossipd.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
It really, really doesn't matter. But we were dramatically reducing
our view of the network:
In my gossip_store (mainnet):
channel_announcement: 30349
channel_update: 55119
node_announcment: 1783
Changelog-Fixed: No longer discard most node_announcements (fixes#3194)
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The flat feature PR changes the rules so these are OK to propagate.
That makes sense: the unsupported features means there's something
unsupported about the *node* or *channel*, not the msg itself
(for that we'd use a different message type).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This prevents a gratuitous lookup of we get a late channel_announce,
but even better, it suppresses the "bad gossip" messages in case of
a late channel_update, which have plagued Travis (especially since we
got aggressive in pushing our own updates).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is a better fix than doing it manually, which turned out
to do it in the wrong order (node_announcement followed by
channel_announcement) anyway.
Should fix many "Bad gossip" messages.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Rusty Russell
niftynei
Vasil Dimov
darosior
Christian Decker