eth_block fetching RPCs

ethcore/src/types/encoded.rs

@@ -199,6 +199,12 @@ impl Block {
 	/// Decode to a full block.
 	pub fn decode(&self) -> FullBlock { ::rlp::decode(&self.0) }
 
+	/// Decode the header.
+	pub fn decode_header(&self) -> FullHeader { self.rlp().val_at(0) }
+
+	/// Clone the encoded header.
+	pub fn header(&self) -> Header { Header(self.rlp().at(0).as_raw().to_vec()) }
+
 	/// Get the rlp of this block.
 	#[inline]
 	pub fn rlp(&self) -> Rlp {