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df-mfc: set the minimum input weight to 110 iif v2

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We only need a bumped up input weight if we're talking to nodes that
require v2.
This commit is contained in:
niftynei 2020-11-17 19:49:10 -06:00 • committed by Rusty Russell
parent b01734087d
commit 4185a86d90
1 changed files with 10 additions and 0 deletions
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10
plugins/spender/multifundchannel.c
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@ -723,6 +723,16 @@ perform_fundpsbt(struct multifundchannel_command *mfc)
tal_fmt(tmpctx, "%zu", startweight)); tal_fmt(tmpctx, "%zu", startweight));
} }
/* If we've got v2 opens, we need to use a min weight of 110. */
/* BOLT-78de9a79b491ae9fb84b1fdb4546bacf642dce87 #2
* The minimum witness weight for an input is 110.
*/
if (dest_count(mfc, OPEN_CHANNEL) > 0) {
json_add_string(req->js, "min_witness_weight",
tal_fmt(tmpctx, "%u", 110));
}
return send_outreq(mfc->cmd->plugin, req); return send_outreq(mfc->cmd->plugin, req);
} }