X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning%2Fsrc%2Fln%2Ffeatures.rs;fp=lightning%2Fsrc%2Fln%2Ffeatures.rs;h=eb0100db675de8842e1d317d4a2b9c5c6e7b9ab1;hb=0328be32f7331d447eefae062ea94dec99f47cad;hp=492cf5ccd198c2829b73b81ab4e5558b9cd14028;hpb=2d94401cca5db752012ba3e80dffaf337b6ca0f1;p=rust-lightning

diff --git a/lightning/src/ln/features.rs b/lightning/src/ln/features.rs
index 492cf5cc..eb0100db 100644
--- a/lightning/src/ln/features.rs
+++ b/lightning/src/ln/features.rs
@@ -400,6 +400,18 @@ impl InvoiceFeatures {
 	pub(crate) fn to_context<C: sealed::Context>(&self) -> Features<C> {
 		self.to_context_internal()
 	}
+
+	/// Getting a route for a keysend payment to a private node requires providing the payee's
+	/// features (since they were not announced in a node announcement). However, keysend payments
+	/// don't have an invoice to pull the payee's features from, so this method is provided for use in
+	/// [`get_keysend_route`], thus omitting the need for payers to manually construct an
+	/// `InvoiceFeatures` for [`get_route`].
+	///
+	/// [`get_keysend_route`]: crate::routing::router::get_keysend_route
+	/// [`get_route`]: crate::routing::router::get_route
+	pub(crate) fn for_keysend() -> InvoiceFeatures {
+		InvoiceFeatures::empty().set_variable_length_onion_optional()
+	}
 }
 
 impl ToBase32 for InvoiceFeatures {