We currently send channel_announcement as soon as we and our
peer agree it's 6 blocks deep. In theory, our other peers might
not have seen that block yet though, so delay a little.
This is mitigated by two factors:
1. lnd will stash any "not ready yet" channel_announcements anyway.
2. c-lightning doesn't enforce the 6 depth minimum at all.
We should not rely on other nodes' generosity or laxity, however!
Next release, we can start enforcing the depth limit, and maybe stashing
ones which don't quite make it (or simply enforce depth 5, not 6).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
In file included from wallet/test/run-wallet.c:15:0:
./lightningd/peer_htlcs.c: In function ‘htlcs_reconnect’:
./lightningd/peer_htlcs.c:2060:15: error: ‘failcode’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
} else if (failcode) {
^~~~~~~~
./lightningd/peer_htlcs.c:2056:19: error: ‘failcode’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
failcode != 0
~~~~~~~~~^~~~
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
`forward_event`
A notification for topic `forward_event` is sent every time the status
of a forward payment is set. The json format is same as the API
`listforwards`.
```json
{
"forward_event": {
"payment_hash": "f5a6a059a25d1e329d9b094aeeec8c2191ca037d3f5b0662e21ae850debe8ea2",
"in_channel": "103x2x1",
"out_channel": "103x1x1",
"in_msatoshi": 100001001,
"in_msat": "100001001msat",
"out_msatoshi": 100000000,
"out_msat": "100000000msat",
"fee": 1001,
"fee_msat": "1001msat",
"status": "settled",
"received_time": 1560696342.368,
"resolved_time": 1560696342.556
}
}
```
or
```json
{
"forward_event": {
"payment_hash": "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
"in_channel": "103x2x1",
"out_channel": "110x1x0",
"in_msatoshi": 100001001,
"in_msat": "100001001msat",
"out_msatoshi": 100000000,
"out_msat": "100000000msat",
"fee": 1001,
"fee_msat": "1001msat",
"status": "local_failed",
"failcode": 16392,
"failreason": "WIRE_PERMANENT_CHANNEL_FAILURE",
"received_time": 1560696343.052
}
}
```
- The status includes `offered`, `settled`, `failed` and `local_failed`,
and they are all string type in json.
- When the forward payment is valid for us, we'll set `offered`
and send the forward payment to next hop to resolve;
- When the payment forwarded by us gets paid eventually, the forward
payment will change the status from `offered` to `settled`;
- If payment fails locally(like failing to resolve locally) or the
corresponding htlc with next hop fails(like htlc timeout), we will
set the status as `local_failed`. `local_failed` may be set before
setting `offered` or after setting `offered`. In fact, from the
time we receive the htlc of the previous hop, all we can know the
cause of the failure is treated as `local_failed`. `local_failed`
only occuors locally or happens in the htlc between us and next hop;
- If `local_failed` is set before `offered`, this
means we just received htlc from the previous hop and haven't
generate htlc for next hop. In this case, the json of `forward_event`
sets the fields of `out_msatoshi`, `out_msat`,`fee` and `out_channel`
as 0;
- Note: In fact, for this case we may be not sure if this incoming
htlc represents a pay to us or a payment we need to forward.
We just simply treat all incoming failed to resolve as
`local_failed`.
- Only in `local_failed` case, json includes `failcode` and
`failreason` fields;
- `failed` means the payment forwarded by us fails in the
latter hops, and the failure isn't related to us, so we aren't
accessed to the fail reason. `failed` must be set after
`offered`.
- `failed` case doesn't include `failcode` and `failreason`
fields;
- `received_time` means when we received the htlc of this payment from
the previous peer. It will be contained into all status case;
- `resolved_time` means when the htlc of this payment between us and the
next peer was resolved. The resolved result may success or fail, so
only `settled` and `failed` case contain `resolved_time`;
- The `failcode` and `failreason` are defined in [BOLT 4][bolt4-failure-codes].
Warp this process as a new function: 'void json_format_forwarding_object()'. This function will be used in 'forward_event' next, and can ensure the consistent json object structure for forward_payment between 'listforwards' API and 'forward_event' notification.
The reason lnd was sending sync error was that we were taking more than
30 seconds to send the channel_reestablish after connect. That's
understandable on my test node under valgrind, but shouldn't happen normally.
However, it seems it has at least once,
(see https://github.com/ElementsProject/lightning/issues/2847)
: space out startup so it's less likely to happen.
Suggested-by: @cfromknecht
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is the other origin, besides `bitcoin_tx`, where we create `bitcoin_tx`
instances, so add the context as soon as possible. Sadly I can't weave the
chainparams into the deserialization code since that'd need to change all the
generated wire code as well.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
The way we build transactions, serialize them, and compute fees depends on the
chain we are working on, so let's add some context to the transactions.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
This is just taking the existing serialization code and repackaging it in a
more useful form.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
This adds a new pair of files : lightningd/plugin_control, along with a new RPC
command : 'plugin'. This command can be used to manage plugins without restarting lightningd:
lightning-cli plugin start helloworld.py
lightning-cli plugin stop helloworld.py
This adds 'plugin_unregister_hook' and 'plugin_unregister_hook_all'
functions to unregister a given hook a plugin registered, or all hooks a
plugin registered for. Since hooks can only be registered once, it's
useful in the case a new plugin is added which would be prefered for
hook registration over an already loaded plugin.
This adds a 'configured' boolean member to the plugin struct so that we can add plugins to ld->plugins' list and differenciate fresh plugins.
This also adds 'plugins_start' so that new plugins can be started without calling 'plugins_init' and running an io loop
It assumes the head of the array is the object/array we want to remove from,
but that's not true if we're trying to remove from a sub-object.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
No code changes, just move.
Put all the dev options into the one function, and register (and
comment on) the early args first.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
I noticed that --network=regtest didn't override 'network=bitcoin' in
the config file.
Normally we parse the config file first, then the commandline (so the cmdline
wins). But for early options, we do cmdline first so we can find the config
file. That was fine when the only early option was the location of the
config file, but now it includes plugins and the network setting.
So do a boutique cmdline parse *just* to find the config file, then parse
the config file early options, then the cmdline early options.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
At the moment we simply get a crypto log line on exit:
bitcoin-cli getblockchaininfo: invalid response
Fixes: 6deed77d88
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The spec says to close the channel if they send us an error, but we
need to be more lenient to preserve channels with other
implementations.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We normally reconnect after 1 second: have a flag to say wait for
60. This will be used in the next patch which handles "soft" errors.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Header from folded patch 'channel_fail_transient_slowretry.patch':
fixup! lightningd: add slow_reconnect flag for transient failure.
@ZmnSCPxj points out that function is unsafe, since omitting the bool
parameter still compiled. Make it two separate functions, each
with a distinctive name so every caller has to be fixed.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
There's only one caller which used the flag.
As a side-effect, now we'll try reconnect even if the previous owner
was NULL (which mainly effects the case where we couldn't create the subd).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
I mean, we still crash, but we give an error now :)
lightningd: FATAL SIGNAL 11 (version v0.7.1-82-g92c38a0)
0x5592e75e19c8 send_backtrace
common/daemon.c:40
0x5592e75e1a6e crashdump
common/daemon.c:53
0x7fad1514ef5f ???
???:0
0x5592e75b2f3a io_loop_with_timers
lightningd/io_loop_with_timers.c:29
0x5592e75d8a54 plugins_init
lightningd/plugin.c:1018
0x5592e75b8e22 main
lightningd/lightningd.c:671
0x7fad15131b6a ???
???:0
0x5592e75a10f9 ???
???:0
0xffffffffffffffff ???
???:0
Segmentation fault (core dumped)
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Rusty Russell
trueptolemy
Simon Vrouwe
Christian Decker
darosior
tasoshi