les: fix eth_sendTransaction API (#23215)

rjl493456442 · web-flow · commit f05419f0fb8c · 2021-07-16T01:52:40.000+02:00
diff --git a/les/api_backend.go b/les/api_backend.go
@@ -60,8 +60,11 @@ func (b *LesApiBackend) SetHead(number uint64) {
 }
 
 func (b *LesApiBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (*types.Header, error) {
+	// Return the latest current as the pending one since there
+	// is no pending notion in the light client. TODO(rjl493456442)
+	// unify the behavior of `HeaderByNumber` and `PendingBlockAndReceipts`.
 	if number == rpc.PendingBlockNumber {
-		return nil, nil
+		return b.eth.blockchain.CurrentHeader(), nil
 	}
 	if number == rpc.LatestBlockNumber {
 		return b.eth.blockchain.CurrentHeader(), nil

Original file line number	Diff line number	Diff line change
`@@ -60,8 +60,11 @@ func (b *LesApiBackend) SetHead(number uint64) {`
`60`	`60`	`}`
`61`	`61`
`62`	`62`	`func (b LesApiBackend) HeaderByNumber(ctx context.Context, number rpc.BlockNumber) (types.Header, error) {`
	`63`	`+ // Return the latest current as the pending one since there`
	`64`	`+ // is no pending notion in the light client. TODO(rjl493456442)`
	`65`	+ // unify the behavior of `HeaderByNumber` and `PendingBlockAndReceipts`.
`63`	`66`	`if number == rpc.PendingBlockNumber {`
`64`		`- return nil, nil`
	`67`	`+ return b.eth.blockchain.CurrentHeader(), nil`
`65`	`68`	`}`
`66`	`69`	`if number == rpc.LatestBlockNumber {`
`67`	`70`	`return b.eth.blockchain.CurrentHeader(), nil`