core, eth: split the db blocks into headers and bodies

1 files changed, 16 insertions, 0 deletions

diff --git a/eth/protocol.go b/eth/protocol.go
index 49f096a3b..24007bbb5 100644
--- a/eth/protocol.go
+++ b/eth/protocol.go
@@ -213,6 +213,22 @@ type blockBody struct {
 // blockBodiesData is the network packet for block content distribution.
 type blockBodiesData []*blockBody
 
+// blockBodyRLP represents the RLP encoded data content of a single block.
+type blockBodyRLP []byte
+
+// EncodeRLP is a specialized encoder for a block body to pass the already
+// encoded body RLPs from the database on, without double encoding.
+func (b *blockBodyRLP) EncodeRLP(w io.Writer) error {
+	if _, err := w.Write([]byte(*b)); err != nil {
+		return err
+	}
+	return nil
+}
+
+// blockBodiesRLPData is the network packet for block content distribution
+// based on original RLP formatting (i.e. skip the db-decode/proto-encode).
+type blockBodiesRLPData []*blockBodyRLP
+
 // nodeDataData is the network response packet for a node data retrieval.
 type nodeDataData []struct {
 	Value []byte