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lightningd: turn on experimental support for zero-fee htlc anchors.

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We disabled experimental support for opening non-zero-fee anchor
channels (though old nodes may still have such channels if they turned
that on!).

So we simply call this `experimental-anchors`, since this is the variant
which we expect to be used widely.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-EXPERIMENTAL: protocol: added support for zero-fee-htlc anchors (`option_anchors_zero_fee_htlc_tx`), using `--experimental-anchors`.
This commit is contained in:
Rusty Russell
2023-06-26 08:49:21 +09:30
parent af6d7c0779
commit 17821da80b
5 changed files with 54 additions and 1 deletions
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15
lightningd/options.c
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@@ -20,7 +20,9 @@
#include <common/wireaddr.h>
#include <dirent.h>
#include <errno.h>
#include <hsmd/hsmd_wiregen.h>
#include <lightningd/chaintopology.h>
#include <lightningd/hsm_control.h>
#include <lightningd/options.h>
#include <lightningd/plugin.h>
#include <lightningd/subd.h>
@@ -1187,6 +1189,15 @@ static char *opt_set_quiesce(struct lightningd *ld)
return NULL;
}
static char *opt_set_anchor_zero_fee_htlc_tx(struct lightningd *ld)
{
/* Requires static_remotekey, but we always set that */
feature_set_or(ld->our_features,
take(feature_set_for_feature(NULL,
OPTIONAL_FEATURE(OPT_ANCHORS_ZERO_FEE_HTLC_TX))));
return NULL;
}
static char *opt_set_offers(struct lightningd *ld)
{
ld->config.exp_offers = true;
@@ -1284,6 +1295,10 @@ static void register_opts(struct lightningd *ld)
opt_set_quiesce, ld,
"experimental: Advertise ability to quiesce"
" channels.");
opt_register_early_noarg("--experimental-anchors",
opt_set_anchor_zero_fee_htlc_tx, ld,
"EXPERIMENTAL: enable option_anchors_zero_fee_htlc_tx"
" to open zero-fee-anchor channels");
clnopt_witharg("--announce-addr-dns", OPT_EARLY|OPT_SHOWBOOL,
opt_set_bool_arg, opt_show_bool,
&ld->announce_dns,