Commit Graph

804 Commits

Author SHA1 Message Date
Rusty Russell
c64ce4bbf3 lightningd: clean up channels when connectd says peer is gone.
This is redundant now, since connectd only sends us this once we tell
it it's OK, but that's changing, so clean up now.  This means that
connectd will be able to make *unsolicited* closes, if it needs to.

We share logic with peer_please_disconnect.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-07-18 20:50:04 -05:00
Rusty Russell
b8ed107743 lightningd: fix dev-memleak crash on unown unconfirmed channels.
```
lightningd-1 2022-07-14T08:18:38.972Z **BROKEN** lightningd: FATAL SIGNAL 11 (version e0507aa)
lightningd-1 2022-07-14T08:18:38.972Z **BROKEN** lightningd: backtrace: common/daemon.c:38 (send_backtrace) 0x56319736e437
lightningd-1 2022-07-14T08:18:38.972Z **BROKEN** lightningd: backtrace: common/daemon.c:46 (crashdump) 0x56319736e48a
lightningd-1 2022-07-14T08:18:38.972Z **BROKEN** lightningd: backtrace: ./signal/../sysdeps/unix/sysv/linux/x86_64/libc_sigaction.c:0 ((null)) 0x7fc37721151f
lightningd-1 2022-07-14T08:18:38.972Z **BROKEN** lightningd: backtrace: lightningd/subd.c:839 (subd_send_msg) 0x5631973425f3
lightningd-1 2022-07-14T08:18:38.972Z **BROKEN** lightningd: backtrace: lightningd/subd.c:859 (subd_req_) 0x5631973426e4
lightningd-1 2022-07-14T08:18:38.972Z **BROKEN** lightningd: backtrace: lightningd/peer_control.c:2967 (peer_dev_memleak) 0x56319732ca93
lightningd-1 2022-07-14T08:18:38.972Z **BROKEN** lightningd: backtrace: lightningd/memdump.c:296 (json_memleak) 0x56319730fc97
lightningd-1 2022-07-14T08:18:38.972Z **BROKEN** lightningd: backtrace: lightningd/jsonrpc.c:630 (command_exec) 0x563197306f9d
lightningd-1 2022-07-14T08:18:38.972Z **BROKEN** lightningd: backtrace: lightningd/jsonrpc.c:765 (rpc_command_hook_final) 0x5631973075d5
lightningd-1 2022-07-14T08:18:38.972Z **BROKEN** lightningd: backtrace: lightningd/plugin_hook.c:278 (plugin_hook_call_) 0x56319733db47
lightningd-1 2022-07-14T08:18:38.972Z **BROKEN** lightningd: backtrace: lightningd/jsonrpc.c:853 (plugin_hook_call_rpc_command) 0x5631973079d4
lightningd-1 2022-07-14T08:18:38.972Z **BROKEN** lightningd: backtrace: lightningd/jsonrpc.c:957 (parse_request) 0x563197307efb
lightningd-1 2022-07-14T08:18:38.972Z **BROKEN** lightningd: backtrace: lightningd/jsonrpc.c:1054 (read_json) 0x563197308361
lightningd-1 2022-07-14T08:18:38.972Z **BROKEN** lightningd: backtrace: ccan/ccan/io/io.c:59 (next_plan) 0x5631973de46c
lightningd-1 2022-07-14T08:18:38.972Z **BROKEN** lightningd: backtrace: ccan/ccan/io/io.c:407 (do_plan) 0x5631973df0a1
lightningd-1 2022-07-14T08:18:38.972Z **BROKEN** lightningd: backtrace: ccan/ccan/io/io.c:417 (io_ready) 0x5631973df0e3
lightningd-1 2022-07-14T08:18:38.972Z **BROKEN** lightningd: backtrace: ccan/ccan/io/poll.c:453 (io_loop) 0x5631973e147f
lightningd-1 2022-07-14T08:18:38.972Z **BROKEN** lightningd: backtrace: lightningd/io_loop_with_timers.c:22 (io_loop_with_timers) 0x563197305041
lightningd-1 2022-07-14T08:18:38.972Z **BROKEN** lightningd: backtrace: lightningd/lightningd.c:1184 (main) 0x56319730b58d
lightningd-1 2022-07-14T08:18:38.972Z **BROKEN** lightningd: backtrace: ../sysdeps/nptl/libc_start_call_main.h:58 (__libc_start_call_main) 0x7fc3771f8d8f
lightningd-1 2022-07-14T08:18:38.972Z **BROKEN** lightningd: backtrace: ../csu/libc-start.c:392 (__libc_start_main_impl) 0x7fc3771f8e3f
lightningd-1 2022-07-14T08:18:38.972Z **BROKEN** lightningd: backtrace: (null):0 ((null)) 0x5631972dec54
lightningd-1 2022-07-14T08:18:38.972Z **BROKEN** lightningd: backtrace: (null):0 ((null)) 0xffffffffffffffff
lightningd-3 2022-07-14T08:18:38.976Z DEBUG   connectd: drain_peer
```

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-07-18 20:50:04 -05:00
Rusty Russell
08e3e979c8 lightningd: set cid correctly in peer->uncommitted_channel.
Setting it to 0xfffff... is just confusing.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-07-18 20:50:04 -05:00
Rusty Russell
73762de18c lightningd: reduce log level for remote address reporting.
It's available in listpeers() if you want to see it, otherwise it's not
really something users want to see in the normal course of operation.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-07-18 05:32:24 +02:00
Rusty Russell
36a29fbfbc lightningd/json.h: remove.
There are hardly any lightningd-specific JSON functions: all that's left
are the feerate ones, and there's already a comment that we should have
a lightningd/feerate.h.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-07-15 12:24:00 -05:00
Rusty Russell
401f1debc5 common: clean up json routine locations.
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>
2022-07-15 12:24:00 -05:00
Rusty Russell
bdefbabbef lightningd: re-transmit all closing transactions on startup.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-07-14 12:40:57 -05:00
adi2011
6ba8abb0de lightningd: Add RPC for populating DB with stub channels and set an error on reconnecting 2022-07-14 12:24:48 -05:00
adi2011
1a1be6abd6 lightningd/peer_control: Add RPC for fetching scb for all the in-memory channels. 2022-07-14 12:24:48 -05:00
Rusty Russell
36e5156832 lightningd: fix close of ancient all-dust channel.
libwally asserts() when trying to calculate the txid: we report it as
invalid elsewhere, but then crash:

```
May 19 20:37:03 c-lightning lightningd[26236]: 2022-05-19T20:37:03.689Z DEBUG   lightningd: close_command: timeout = 1
May 19 20:37:04 c-lightning lightningd[26236]: 2022-05-19T20:37:04.689Z UNUSUAL 037f32400c108f8385db94371bfcef08948bc0042069c1ef6f39086cdf23420ee5-chan#91: Peer permanent failure in CHANNELD_SHUTTING_DOWN: Forcibly closed by `close` command timeout
May 19 20:37:04 c-lightning lightningd[26236]: 2022-05-19T20:37:04.689Z **BROKEN** 037f32400c108f8385db94371bfcef08948bc0042069c1ef6f39086cdf23420ee5-chan#91: Cannot broadcast our commitment tx: it's invalid! (ancient channel?)
May 19 20:37:04 c-lightning lightningd[26236]: lightningd: bitcoin/tx.c:485: wally_txid: Assertion `len == written' failed.
May 19 20:37:04 c-lightning lightningd[26236]: lightningd: FATAL SIGNAL 6 (version v0.11.1)
May 19 20:37:04 c-lightning lightningd[26236]: 0x45bd01 send_backtrace
May 19 20:37:04 c-lightning lightningd[26236]:         common/daemon.c:33
May 19 20:37:04 c-lightning lightningd[26236]: 0x45bd8b crashdump
May 19 20:37:04 c-lightning lightningd[26236]:         common/daemon.c:46
May 19 20:37:04 c-lightning lightningd[26236]: 0x7f9f877604bf ???
May 19 20:37:04 c-lightning lightningd[26236]:         ???:0
May 19 20:37:04 c-lightning lightningd[26236]: 0x7f9f87760438 ???
May 19 20:37:04 c-lightning lightningd[26236]:         ???:0
May 19 20:37:04 c-lightning lightningd[26236]: 0x7f9f87762039 ???
May 19 20:37:04 c-lightning lightningd[26236]:         ???:0
May 19 20:37:04 c-lightning lightningd[26236]: 0x7f9f87758be6 ???
May 19 20:37:04 c-lightning lightningd[26236]:         ???:0
May 19 20:37:04 c-lightning lightningd[26236]: 0x7f9f87758c91 ???
May 19 20:37:04 c-lightning lightningd[26236]:         ???:0
May 19 20:37:04 c-lightning lightningd[26236]: 0x4751b7 wally_txid
May 19 20:37:04 c-lightning lightningd[26236]:         bitcoin/tx.c:485
May 19 20:37:04 c-lightning lightningd[26236]: 0x4751f4 bitcoin_txid
May 19 20:37:04 c-lightning lightningd[26236]:         bitcoin/tx.c:496
May 19 20:37:04 c-lightning lightningd[26236]: 0x40bad0 resolve_one_close_command
May 19 20:37:04 c-lightning lightningd[26236]:         lightningd/closing_control.c:60
May 19 20:37:04 c-lightning lightningd[26236]: 0x40cef3 resolve_close_command
May 19 20:37:04 c-lightning lightningd[26236]:         lightningd/closing_control.c:82
May 19 20:37:04 c-lightning lightningd[26236]: 0x430355 drop_to_chain
May 19 20:37:04 c-lightning lightningd[26236]:         lightningd/peer_control.c:286
```

Fixes: #5277
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-07-10 20:24:04 -05:00
Dustin Dettmer
9296537edb peer_control: Fix check_funding_details assert
Check funding_outnum validity first to avoid reading invalid outputs

Changelog-Fixed: Fixed a potential issue if the number of outputs decreases in a dualopen RBF or splice.
2022-07-07 22:03:29 -05:00
Christian Decker
0ce68b26c6 jsonrpc: Include the direction also if we have an alias
The direction only depends on the ordering between node_ids, not the
short_channel_id, so we can include it and it won't change. This was
causing some trouble loading the `channel_hints` in the `pay` plugin.
2022-07-04 22:14:06 +02:00
Christian Decker
cdedd433a4 jsonrpc: Add aliases to listpeers result 2022-07-04 22:14:06 +02:00
Christian Decker
3fbaac3fdb jsonrpc: Add option_zeroconf handling to listpeers 2022-07-04 22:14:06 +02:00
Rusty Russell
afbddcf7f3 lightningd: fix crash on rapid reconnect.
Happens occasionally when running
`tests/test_connection.py::test_mutual_reconnect_race` (which is too
flaky to add, without more fixes):


```
lightningd: lightningd/peer_control.c:1252: peer_active: Assertion `!channel->owner' failed.
lightningd: FATAL SIGNAL 6 (version v0.11.0.1-38-g4f167da)
0x5594a41f8f45 send_backtrace
	common/daemon.c:33
0x5594a41f8fef crashdump
	common/daemon.c:46
0x7f7cb585c08f ???
	/build/glibc-SzIz7B/glibc-2.31/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
0x7f7cb585c00b __GI_raise
	../sysdeps/unix/sysv/linux/raise.c:51
0x7f7cb583b858 __GI_abort
	/build/glibc-SzIz7B/glibc-2.31/stdlib/abort.c:79
0x7f7cb583b728 __assert_fail_base
	/build/glibc-SzIz7B/glibc-2.31/assert/assert.c:92
0x7f7cb584cfd5 __GI___assert_fail
	/build/glibc-SzIz7B/glibc-2.31/assert/assert.c:101
0x5594a41b45ca peer_active
	lightningd/peer_control.c:1252
0x5594a418794c connectd_msg
	lightningd/connect_control.c:457
0x5594a41cd457 sd_msg_read
	lightningd/subd.c:556
0x5594a41ccbe5 read_fds
	lightningd/subd.c:357
0x5594a4269fc2 next_plan
	ccan/ccan/io/io.c:59
0x5594a426abca do_plan
	ccan/ccan/io/io.c:407
0x5594a426ac0c io_ready
	ccan/ccan/io/io.c:417
0x5594a426ceff io_loop
	ccan/ccan/io/poll.c:453
0x5594a41930d9 io_loop_with_timers
	lightningd/io_loop_with_timers.c:22
0x5594a4199293 main
	lightningd/lightningd.c:1181
0x7f7cb583d082 __libc_start_main
	../csu/libc-start.c:308
0x5594a416e15d ???
	???:0
0xffffffffffffffff ???
	???:0
```
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-06-28 13:47:27 +09:30
Rusty Russell
a0c6447611 lightningd: remove overzealous assertion.
This is being hit: it's possible if connectd and lightningd get desynchronized,
and we'll handle this later when peer is activated.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-06-24 10:16:18 +09:30
Rusty Russell
36a2491a89 json: fix up msat amounts in non-_msat fields.
We had json_add_amount_msat_only(), which was designed to be used to
print out msat fields, if we had sats.

However, we misused it, so split it into the three different cases:
1. json_add_amount_sat_msat: We are using it correctly, with a field called
   xxx_msat.
2. json_add_amount_sats_deprecated: We were using it wrong, so deprecate
   the old field and create a new one which does end in _msat.
3. json_add_sats: we were using it to hand sats as a JSON parameter to an
   interface, where "XXXsat".

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Deprecated: Plugins: `rbf_channel` and `openchannel2` hooks `their_funding` (use `their_funding_msat`)
Changelog-Deprecated: Plugins: `openchannel2` hook `dust_limit_satoshis` (use `dust_limit_msat`)
Changelog-Deprecated: Plugins: `openchannel` hook `funding_satoshis` (use `funding_msat`)
Changelog-Deprecated: Plugins: `openchannel` hook `dust_limit_satoshis` (use `dust_limit_msat`)
Changelog-Deprecated: Plugins: `openchannel` hook `channel_reserve_satoshis` (use `channel_reserve_msat`)
Changelog-Deprecated: Plugins: `channel_opened` notification `amount` (use `funding_msat`)
Changelog-Deprecated: JSON-RPC: `listtransactions` `msat` (use `amount_msat`)
Changelog-Deprecated: Plugins: `htlc_accepted` `forward_amount` (use `forward_msat`)
2022-06-21 06:52:35 +09:30
Michael Schmoock
475e4c9bd9 jsonrpc: adds optional remote_addr to listpeers
Changelog-Added: jsonrpc: adds optional `remote_addr` to listpeers
2022-06-17 20:30:16 +09:30
Michael Schmoock
32c4540fc0 jsonrpc: adds dynamicaly detected IP addresses to getinfo
Changelog-Fixed: JSON-RPC: Adds dynamically detected public IP addresses to `getinfo`
2022-06-17 20:30:16 +09:30
Michael Schmoock
de9bc172de connect: adds nodeid to remote_addr log message 2022-06-17 20:30:16 +09:30
Rusty Russell
f078e54e98 lightningd: remove various deprecated JSON fields.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Removed: JSON-RPC: removed `listtransactions` `outputs` `satoshis` field (deprecated v0.10.1)
Changelog-Removed: JSON-RPC: removed `listpeers` `channels` deprecated fields (deprecated v0.10.1)
Changelog-Removed: JSON-RPC: removed `listpeers` `channels` `closer` now omitted, rather than `null` (deprecated v0.10.1)
2022-05-18 10:15:36 +09:30
Rusty Russell
151d009435 lightningd: remove over-zealous assert.
This was hit on my node.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-04-13 10:32:29 +09:30
Michael Schmoock
21fd3b22d4 config: adds htlc_minimum_msat htlc_maximum_msat announce_discovered_ip
This adds config and commandline options for htlc_min_msat, htlc_max_msat and
announce_discovered_ip. The default is 0msat for htlc_min_msat, unlimited for
htlc_max_msat and enabled for announce_discovered_ip.

The announce_discovered_ip gets the disable commandline switch --disable-ip-discovery

Changelog-added: Config options for htlc_min_msat, htlc_max_msat and announce_discovered_ip.
2022-04-05 05:45:04 +09:30
Rusty Russell
2526e804f7 doc: big BOLT update to incorporate warnings language.
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>
2022-04-02 09:40:18 +10:30
Rusty Russell
bcf3cef96c pytest: fix flake in test_connection.py::test_opener_feerate_reconnect
Make sure it sees disconnect before reconnect, otherwise the next command
fails since we're now disconnected.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-03-23 13:20:12 +10:30
Rusty Russell
293cf3c2b2 connect: delay return until all subds ready.
We had some flakes because we returned from `connect`, but we hadn't started
subds yet.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-03-23 13:20:12 +10:30
Rusty Russell
1e4149f18a lightningd: clean up peer connection handling a little.
Update the address and direction as soon as it connects not just when
we're about to make it active: we want this even if we don't have
an active channel, or if the connect hook rejects it.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-03-23 13:20:12 +10:30
Rusty Russell
4e8239fcfe lightningd: don't tell connectd to discard peer unless no subds left.
Otherwise it waits for subds to exit, but they don't.  Plus, the others
may still be talking!

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-03-23 13:20:12 +10:30
Rusty Russell
75596b3e0f lightningd: use a better channel if available to next hop.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-03-23 13:20:12 +10:30
Rusty Russell
21e1d68e3b lightningd: remove (most) functions to search channels by status.
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).
2022-03-23 13:20:12 +10:30
Rusty Russell
cb5dc48cab lightningd: make setchannelfee handle multiple channels per peer.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-03-23 13:20:12 +10:30
Rusty Russell
b3438e9bba lightningd: associate connect commands with peer, not channel.
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>
2022-03-23 13:20:12 +10:30
Rusty Russell
33abf93ec1 lightningd: rename activate_peers() to setup_peers().
Activate means a specific thing now (connectd said something), so avoid
confusing it with this function.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-03-23 13:20:12 +10:30
Rusty Russell
90be2cc104 lightningd: remove some "single active channel" assumptions.
Generally this means converting a lazy "peer_active_channel(peer)" call
into an explicit iteration.

1. notify_feerate_change: call all channels (ignores non-active ones anyway).
2. peer_get_owning_subd remove unused function.
3. peer_connected hook: don't save channel, do lookup and iterate channels.
4. In json_setchannelfee "all" remove useless call to peer_active_channel
   since we check state anyway, and iterate.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-03-23 13:20:12 +10:30
Rusty Russell
7de7b7be61 lightningd: use channel_id when a peer is activated.
Rather than intuiting whether this is a new channel / active channel,
use the channel_id.  This simplifies things and makes them explicit,
and prepares for multiple live channels per peer.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-03-23 13:20:12 +10:30
Rusty Russell
fe9f391a93 connectd: tell lightningd the channel_id when we give it the active peer.
Now we always have it (either extracted from an unsolicited message,
or told to us by lightningd when it tells us it wants to talk), we can
always send it.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-03-23 13:20:12 +10:30
Rusty Russell
2bc58e2327 lightningd: always tell connectd the channel id.
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>
2022-03-23 13:20:12 +10:30
Rusty Russell
57263a3eb2 lightningd: handle reestablish directly from connectd.
We don't need to hand it to channeld: it will read it!  We simply
need to tell it to expect it.

Similarly, openingd/dualopend will never see it, so remove that logic.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-03-23 13:20:12 +10:30
Rusty Russell
2424b7dea8 connectd: hold peer until we're interested.
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>
2022-03-23 13:20:12 +10:30
Rusty Russell
77b1087cdf lightningd: move notification of disconnect into when we hear from connectd.
Simpler, and closes a potential race.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-03-23 13:20:12 +10:30
Rusty Russell
deecedb033 connectd: tell lightningd when disconnect is complete.
This avoids races in our tests where we assume it's sync (and is kind
of nicer).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-03-23 13:20:12 +10:30
Rusty Russell
eb203bf71e lightningd: clean up connect code.
1. The notification should be called every time.
2. channel can never be NULL, since it's tested above.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Fixed: JSON-RPC: `connect` notification now called even if we already have a live channel.
2022-03-23 13:20:12 +10:30
Rusty Russell
b99c04e605 lightningd: add explicit "connected" flag.
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>
2022-03-23 13:20:12 +10:30
Rusty Russell
5704653d4c setchannel: don't let them advertize htlc_maximum_msat larger than capacity.
And check for the obvious setting min > max.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-03-22 18:45:41 +10:30
Rusty Russell
999c734bb5 setchannel: add minhtlc
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.
2022-03-22 18:45:41 +10:30
Rusty Russell
42f91ff2fa lightningd: deprecate setchannelfee, use setchannel in tests.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Deprecated: JSON-RPC: `setchannelfee` (use `setchannel`).
2022-03-22 18:45:41 +10:30
Rusty Russell
66e264d6b3 lightningd: new setchannel command.
Based on setchannelfee, but expanded to allow setting max htlc amount (and others
in future?).

The main differences:
1. It doesn't change values which are not specified (that would be hard to
   add fields to!)
2. It says exactly what all values are in any potentially changed channels.

Changelog-Added: JSON-RPC: new `setchannel` command generalizes `setchannelfee`.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-03-22 18:45:41 +10:30
Rusty Russell
4fdcee9a11 channeld: generalize specific_feerates mesage into config_channel.
1. Add the htlc_max param.
2. Allow parameters to be unset, meaning "don't change".

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-03-22 18:45:41 +10:30
Rusty Russell
33bd251296 listpeers: show maximum_htlc_out_msat.
This is htlc_maximum_msat in BOLT 7 speak, but this name matches our existing
fields and is clearer in this context.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-03-22 18:45:41 +10:30
Rusty Russell
f078a916e7 lightningd: enforce htlc_maximum_msat.
When we let them set it, this matters!

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-03-22 18:45:41 +10:30