From 57cda741e1ecb09338cb9ebae572cb41d7920fc1 Mon Sep 17 00:00:00 2001
From: Todd Stock <todd@avalabs.org>
Date: Sun, 22 Nov 2020 06:56:30 -0500
Subject: parse string

---
 ethclient/ethclient.go | 14 ++++++++++++--
 internal/ethapi/api.go |  4 +++-
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/ethclient/ethclient.go b/ethclient/ethclient.go
index 6c1fa8d..c44a3e9 100644
--- a/ethclient/ethclient.go
+++ b/ethclient/ethclient.go
@@ -101,7 +101,7 @@ type rpcBlock struct {
 	Transactions   []rpcTransaction `json:"transactions"`
 	UncleHashes    []common.Hash    `json:"uncles"`
 	Version        uint32           `json:"version"`
-	BlockExtraData []byte          `json:"blockExtraData"`
+	BlockExtraData string           `json:"blockExtraData"`
 }
 
 func (ec *Client) getBlock(ctx context.Context, method string, args ...interface{}) (*types.Block, error) {
@@ -121,6 +121,16 @@ func (ec *Client) getBlock(ctx context.Context, method string, args ...interface
 	if err := json.Unmarshal(raw, &body); err != nil {
 		return nil, err
 	}
+
+	var blockExtraData *[]byte
+	if len(body.BlockExtraData) != 0 {
+		blockExtraDataDecoded, err := hexutil.Decode(body.BlockExtraData)
+		if err != nil {
+			return nil, err
+		}
+		blockExtraData = &blockExtraDataDecoded
+	}
+
 	// Quick-verify transaction and uncle lists. This mostly helps with debugging the server.
 	if head.UncleHash == types.EmptyUncleHash && len(body.UncleHashes) > 0 {
 		return nil, fmt.Errorf("server returned non-empty uncle list but block header indicates no uncles")
@@ -166,7 +176,7 @@ func (ec *Client) getBlock(ctx context.Context, method string, args ...interface
 		}
 		txs[i] = tx.tx
 	}
-	return types.NewBlockWithHeader(head).WithBody(txs, uncles, body.Version, &body.BlockExtraData), nil
+	return types.NewBlockWithHeader(head).WithBody(txs, uncles, body.Version, blockExtraData), nil
 }
 
 // HeaderByHash returns the block header with the given hash.
diff --git a/internal/ethapi/api.go b/internal/ethapi/api.go
index 1a95d9b..77efcab 100644
--- a/internal/ethapi/api.go
+++ b/internal/ethapi/api.go
@@ -1161,7 +1161,9 @@ func RPCMarshalBlock(block *types.Block, inclTx bool, fullTx bool) (map[string]i
 	fields := RPCMarshalHeader(block.Header())
 	fields["size"] = hexutil.Uint64(block.Size())
 
-	fields["blockExtraData"] = hexutil.Bytes(block.ExtraData())
+	if len(block.ExtraData()) != 0 {
+		fields["blockExtraData"] = hexutil.Encode(block.ExtraData())
+	}
 
 	if inclTx {
 		formatTx := func(tx *types.Transaction) (interface{}, error) {
-- 
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