From 116763952498d9c1b852fa94542df1b3f03e2812 Mon Sep 17 00:00:00 2001
From: Dan Sosedoff <dan.sosedoff@gmail.com>
Date: Thu, 10 Sep 2020 07:24:21 -0500
Subject: [PATCH] ethclient: add BlockNumber method (#21500)

This adds a new client method BlockNumber to fetch the most recent
block number of the chain.
---
 ethclient/ethclient.go | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/ethclient/ethclient.go b/ethclient/ethclient.go
index bc0305fc22..a964bd0f8d 100644
--- a/ethclient/ethclient.go
+++ b/ethclient/ethclient.go
@@ -88,6 +88,13 @@ func (ec *Client) BlockByNumber(ctx context.Context, number *big.Int) (*types.Bl
 	return ec.getBlock(ctx, "eth_getBlockByNumber", toBlockNumArg(number), true)
 }
 
+// BlockNumber returns the most recent block number
+func (ec *Client) BlockNumber(ctx context.Context) (uint64, error) {
+	var result hexutil.Uint64
+	err := ec.c.CallContext(ctx, &result, "eth_getBlockNumber", nil)
+	return uint64(result), err
+}
+
 type rpcBlock struct {
 	Hash         common.Hash      `json:"hash"`
 	Transactions []rpcTransaction `json:"transactions"`