The only places which should call try_reconnect now are the "connect"
command, and the disconnect path when it decides there's still an
active channel.
This introduces one subtlety: if we disconnect when there's no active
channel, but then the subd makes one, we have to catch that case!
This temporarily reverts "slow" reconnections to fast ones: see next
patch.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Connectd already does this when we *receive* an error or warning, but
now do it on send. This causes some slight behavior change: we don't
disconnect when we close a channel, for example (our behaviour here
has been inconsistent across versions, depending on the code).
When connectd is told to disconnect, it now does so immediately, and
doesn't wait for subds to drain etc. That simplifies the manual
disconnect case, which now cleans up as it would from any other
disconnection when connectd says it's disconnected.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
It's directly a product of "does it have a current owner subdaemon"
and "does that subdaemon talk to peers", so create a helper function
which just evaluates that instead.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We have them split over common/param.c, common/json.c,
common/json_helpers.c, common/json_tok.c and common/json_stream.c.
Change that to:
* common/json_parse (all the json_to_xxx routines)
* common/json_parse_simple (simplest the json parsing routines, for cli too)
* common/json_stream (all the json_add_xxx routines)
* common/json_param (all the param and param_xxx routines)
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Caused a crash in CI, reproduced under valgrind by calling
any_channel_by_scid from io_poll_lightningd:
```
==2422524== Conditional jump or move depends on uninitialised value(s)
==2422524== at 0x12C98D: any_channel_by_scid (channel.c:606)
==2422524== by 0x14FF75: io_poll_lightningd (lightningd.c:682)
==2422524== by 0x225FDE: io_loop (poll.c:420)
==2422524== by 0x14A914: io_loop_with_timers (io_loop_with_timers.c:22)
==2422524== by 0x150C4E: main (lightningd.c:1193)
==2422524== Uninitialised value was created by a heap allocation
==2422524== at 0x483B7F3: malloc (in /usr/lib/x86_64-linux-gnu/valgrind/vgpreload_memcheck-amd64-linux.so)
==2422524== by 0x234F61: allocate (tal.c:250)
==2422524== by 0x235522: tal_alloc_ (tal.c:428)
==2422524== by 0x12B500: new_unsaved_channel (channel.c:203)
==2422524== by 0x13B77A: json_openchannel_init (dual_open_control.c:2610)
==2422524== by 0x14C78D: command_exec (jsonrpc.c:630)
==2422524== by 0x14CD9F: rpc_command_hook_final (jsonrpc.c:765)
==2422524== by 0x181DDA: plugin_hook_call_ (plugin_hook.c:278)
==2422524== by 0x14D198: plugin_hook_call_rpc_command (jsonrpc.c:853)
==2422524== by 0x14D6A0: parse_request (jsonrpc.c:957)
==2422524== by 0x14DAFE: read_json (jsonrpc.c:1054)
==2422524== by 0x2231C8: next_plan (io.c:59)
```
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We used to agree up on the `minimum_depth` with the peer, thus when
they told us that the funding locked we'd be sure we either have a
scid or we'd trigger the state transition when we do. However if we
had a scid, and we got a funding_locked we'd trust them not to have
sent it early. Now we explicitly track the depth in the channel while
waiting for the funding to confirm.
Changelog-Fixed: channeld: Enforce our own `minimum_depth` beyond just confirming
We use this in a couple of places, when we want to refer to a channel
by its `short_channel_id`, I'm moving this into a separate function
primarily to have a way to mark places where we do that.
`alias_local` is generated locally and sent to the peer so it knows
what we're calling the channel, while `alias_remote` is received by
the peer so we know what to include in routehints when generating
invoices.
This is generally verboten now, since there can be multiple. There are a
few exceptions:
1. We sometimes want to know if there are *any* active channels.
2. Some dev commands still take peer id when they mean channel_id.
3. We still allow peer id when it's fully determined.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Changed: JSON-RPC: `close` by peer id will fail if there is more than one live channel (use `channel_id` or `short_channel_id` as id arg).
More efficient to search a known peer than the whole set.
Also, move find_channel_by_id() from channel_control.c into channel.c
where we'd expect it.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Sure, we want to connect (usually) because of an active channel, but
it's not specific to the channel itself.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This means lightningd needs to create the temporary one and tell it to
openingd/dualopend, rather than the other way around.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Either because lightningd tells us it wants to talk, or because the peer
says something about a channel.
We also introduce a behavior change: we disconnect after a failed open.
We might want to modify this later, but we it's a side-effect of openingd
not holding onto idle connections.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The message from lightningd simply acknowleges that we are allowed to
discard the peer (because no subdaemons are talking to it anymore).
This difference becomes more stark once connectd holds on to idle
peers.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We currently intuit this by whether there's a subdaemon owning it.
But we're about to change the rules and allow connectd to hold idle
connections, so we need an explicit flag.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Suggested by @m-schmook, I realized that if we append it later I'll
never get it right: I expect parameters min and max, not max and min!
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Added: Protocol: you can now alter the `htlc_minimum_msat` and `htlc_maximum_msat` your node advertizes.
We used to calculate it ourselves. Unfortunately this needs to
be done in several places, since new_channel() isn't used to fully
create a channel in the case of dual funding :(
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We want it to keep the latest, so it can make its own error msgs without
asking us. This installs (but does not use!) the message handler.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
It's weird to have connectd ask gossipd, when lightningd can just do it
and hand all the addresses together.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
1. Freeing an unconfirmed channel already releases the subd, so don't
do that explicitly.
2. Use channel->owner to transfer ownership where possible, using
channel_set_owner() which handles all the cases.
This simplifies the code and makes it more readable, IMHO.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We need to stash/save the amount of the lease fees on a leased channel,
we do this by re-using the 'push' amount field on channel (which is
technically correct, since we're essentially pushing the fee amount to
the peer).
Also updates a bit of how the pushes are accounted for (pushed to now
has an event; their channel will open at zero but then they'll
immediately register a push event).
Leases fees are treated exactly the same as pushes, except labeled
differently.
Required adding a 'lease_fee' field to the inflights so we keep track of
the fee for the lease until the open happens.
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>
This was measured as a 95th percentile in our rough testing, thanks to
all the volunteers who monitored my channels.
Fixes: #4761
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Added: JSON-RPC: `setchannelfee` gives a grace period (`enforcedelay`) before rejecting old-fee payments: default 10 minutes.
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>
This affects the range we offer even without quick-close, but it's
more critical for quick-close.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Added: JSONRPC: `close` now takes a `feerange` parameter to set min/max fee rates for mutual close.
If the peer is offline when we see the funding txid, we don't actually
update the channel's info. Here, we move it up to where the scid is set,
so that we always update the channel's funding_txid to the correct
(mined) information.
We set the timeout on first HTLC, but didn't clear it if that HTLC failed.
It's saner to have a per-HTLC timeout (since that's what it is!) and
also our timer infra is specially coded to scale approximately infinitely so
trying to optimize this is vastly premature.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Fixed: Protocol: We would sometimes gratuitously disconnect 30 seconds after an HTLC failed.
This means remembering the connection direction. We also use the address to try
to reconnect, which we shouldn't bother with if they connect to us.
For peers from the database, we currently always save the addr: we shouldn't really
do this if they connected to us, since it's not useful for reconnecting (we don't
show the addr in JSON reply to listpeers unless we're connected, so it's only an
internal issue). This is left for future work.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Allows us to clean up an in-progress open that we won't be completing
Changelog-Added: EXPERIMENTAL JSON-RPC: Permit user-initiated aborting of in-progress opens. Only valid for not-yet-committed opens and RBF-attempts
