f - check that intro node supports route blinding

Author: jkczyz

lightning/src/routing/router.rs

@@ -124,6 +124,12 @@ impl<G: Deref<Target = NetworkGraph<L>> + Clone, L: Deref, S: Deref, SP: Sized,
 						.map(|(info, source)| (source, *scid, info))
 					)
 					.filter(|(source, _, _)| **source != recipient_node_id)
+					.filter(|(source, _, _)| network_graph
+						.node(source)
+						.and_then(|info| info.announcement_info.as_ref())
+						.map(|info| info.features.supports_route_blinding())
+						.unwrap_or(false)
+					)
 					.filter(|(_, _, info)| amount_msats >= info.direction().htlc_minimum_msat)
 					.filter(|(_, _, info)| amount_msats <= info.direction().htlc_maximum_msat)
 					.map(move |(source, scid, info)| (source, scid, info, details))