f update comment and dummy node id

Author: valentinewallace

lightning/src/routing/router.rs

@@ -1280,11 +1280,13 @@ pub(crate) fn get_route<L: Deref, S: Score>(
 	_random_seed_bytes: &[u8; 32]
 ) -> Result<Route, LightningError>
 where L::Target: Logger {
-	// If we're routing to a blinded recipient, we won't have their node id. Therefore, keep the
+	// If we're routing to a blinded recipient, we might not have their node id. Therefore, keep the
 	// unblinded payee id as an option. We also need a non-optional "payee id" for path construction,
-	// so use a dummy id for this in the blinded case.
+	// so use a dummy id for this if we don't know the recipient's node id. If there are any 1-hop
+	// blinded paths, we'll later set the payee node id and the maybe-dummy node id to the path's
+	// introduction node id.
 	let mut payee_node_id_opt = payment_params.payee.node_id().map(|pk| NodeId::from_pubkey(&pk));
-	const DUMMY_BLINDED_PAYEE_ID: [u8; 33] = [3, 91, 229, 233, 71, 130, 9, 103, 74, 150, 230, 15, 31, 3, 127, 97, 118, 84, 15, 208, 1, 250, 29, 100, 105, 71, 112, 197, 106, 119, 9, 196, 44]; // pubkey corresponding to secret [42; 33]
+	const DUMMY_BLINDED_PAYEE_ID: [u8; 33] = [2; 33];
 	let mut maybe_dummy_payee_pk = payment_params.payee.node_id().unwrap_or_else(|| PublicKey::from_slice(&DUMMY_BLINDED_PAYEE_ID).unwrap());
 	let mut maybe_dummy_payee_node_id = NodeId::from_pubkey(&maybe_dummy_payee_pk);
 	let our_node_id = NodeId::from_pubkey(&our_node_pubkey);