experimental: hide the jamming_endorsement under an experimetal flag

Signed-off-by: Vincenzo Palazzo <[email protected]>

Author: vincenzopalazzo

doc/lightningd-config.5.md

@@ -803,6 +803,11 @@ don't have to use a worst-case fee, but can bump the commitment transaction
 if it's needed.  Note that this means that we need to keep
 some funds aside: see `min-emergency-msat`.
 
+* **experimental-jamming-endorsement**
+
+  Specifying this option turn on part of the Channel Jamming mitigation
+to forward the `endorsed` inside `update_add_htl` lightning message.
+
 BUGS
 ----
 

lightningd/lightningd.h

@@ -388,6 +388,9 @@ struct lightningd {
 	/* --invoices-onchain-fallback */
 	bool unified_invoices;
 
+	/* --experimental-jamming */
+	bool experimental_jamming_endorsement;
+
 	/* For anchors: how much do we keep for spending close txs? */
 	struct amount_sat emergency_sat;
 

lightningd/options.c

@@ -1622,6 +1622,10 @@ static void register_opts(struct lightningd *ld)
 	opt_register_noarg("--invoices-onchain-fallback",
 			   opt_set_bool, &ld->unified_invoices,
 			   "Include an onchain address in invoices and mark them as paid if payment is received on-chain");
+	opt_register_noarg("--experimental-jamming-endorsement",
+			   opt_set_bool, &ld->experimental_jamming_endorsement,
+			   "experimental: allow htlc endorsement to mitigate channel jamming (incomplete)");
+
 	clnopt_witharg("--database-upgrade", OPT_SHOWBOOL,
 		       opt_set_db_upgrade, NULL,
 		       ld,

lightningd/peer_htlcs.c

@@ -1456,7 +1456,10 @@ static bool peer_accepted_htlc(const tal_t *ctx,
 	 * we're in hook */
 	hook_payload->fwd_channel_id
 		= calc_forwarding_channel(ld, hook_payload);
-
+	// FIXME(vincenzopalazzo): ok this do not looks right, the value of
+	// hook_payload->endorsed should came from the prious pear of from us
+	// if we are the sender.
+	hook_payload->endorsed = ld->experimental_jamming_endorsement ? false : NULL;
 	plugin_hook_call_htlc_accepted(ld, NULL, hook_payload);
 
 	/* Falling through here is ok, after all the HTLC locked */