X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning%2Fsrc%2Fln%2Ffeatures.rs;h=eee534f71087215ff1f00e71be32e314ab44d623;hb=87a0018e3ebf7d47086032d817a9e671c359214e;hp=c334074871eb486a924da2eabdde30865dc55e22;hpb=09d2a71352f738de1f4f36248a735e6383ee0d8d;p=rust-lightning

diff --git a/lightning/src/ln/features.rs b/lightning/src/ln/features.rs
index c3340748..eee534f7 100644
--- a/lightning/src/ln/features.rs
+++ b/lightning/src/ln/features.rs
@@ -118,6 +118,13 @@ impl ChannelFeatures {
 			mark: PhantomData,
 		}
 	}
+
+	/// Takes the flags that we know how to interpret in an init-context features that are also
+	/// relevant in a channel-context features and creates a channel-context features from them.
+	pub(crate) fn with_known_relevant_init_flags(_init_ctx: &InitFeatures) -> Self {
+		// There are currently no channel flags defined that we understand.
+		Self { flags: Vec::new(), mark: PhantomData, }
+	}
 }
 
 impl NodeFeatures {
@@ -136,6 +143,17 @@ impl NodeFeatures {
 			mark: PhantomData,
 		}
 	}
+
+	/// Takes the flags that we know how to interpret in an init-context features that are also
+	/// relevant in a node-context features and creates a node-context features from them.
+	pub(crate) fn with_known_relevant_init_flags(init_ctx: &InitFeatures) -> Self {
+		let mut flags = Vec::new();
+		if init_ctx.flags.len() > 0 {
+			// Pull out data_loss_protect and upfront_shutdown_script (bits 0, 1, 4, and 5)
+			flags.push(init_ctx.flags.last().unwrap() & 0b00110011);
+		}
+		Self { flags, mark: PhantomData, }
+	}
 }
 
 impl<T: sealed::Context> Features<T> {