From 5036992b0665c5b454ef7005b09a86895df63551 Mon Sep 17 00:00:00 2001
From: Martin Holst Swende <martin@swende.se>
Date: Thu, 2 May 2019 14:50:23 +0200
Subject: eth, les: add error when accessing missing block state (#18346)
This change makes getBalance, getCode, getStorageAt, getProof,
call, getTransactionCount return an error if the block number in
the request doesn't exist. getHeaderByNumber still returns null
for missing headers.
---
les/api_backend.go | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
(limited to 'les')
diff --git a/les/api_backend.go b/les/api_backend.go
index 4fe352136..589cf572d 100644
--- a/les/api_backend.go
+++ b/les/api_backend.go
@@ -18,6 +18,7 @@ package les
import (
"context"
+ "errors"
"math/big"
"github.com/ethereum/go-ethereum/accounts"
@@ -78,9 +79,12 @@ func (b *LesApiBackend) BlockByNumber(ctx context.Context, blockNr rpc.BlockNumb
func (b *LesApiBackend) StateAndHeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*state.StateDB, *types.Header, error) {
header, err := b.HeaderByNumber(ctx, blockNr)
- if header == nil || err != nil {
+ if err != nil {
return nil, nil, err
}
+ if header == nil {
+ return nil, nil, errors.New("header not found")
+ }
return light.NewState(ctx, header, b.eth.odr), header, nil
}
--
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