From 3c667312df5d31a10721248fa8099f1877f0ff58 Mon Sep 17 00:00:00 2001
From: jongwhan lee <jonghwan@crypto.com>
Date: Mon, 12 Jul 2021 20:39:36 +0900
Subject: [PATCH] Problem: etherjs smartcontract cannot change state (fix #257)

Solution: increase base gas to make similar with ethereum
---
 ethereum/rpc/namespaces/eth/api.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ethereum/rpc/namespaces/eth/api.go b/ethereum/rpc/namespaces/eth/api.go
index 729484e8b9..c4e69a925d 100644
--- a/ethereum/rpc/namespaces/eth/api.go
+++ b/ethereum/rpc/namespaces/eth/api.go
@@ -567,7 +567,9 @@ func (e *PublicAPI) EstimateGas(args evmtypes.CallArgs) (hexutil.Uint64, error)
 		return 0, evmtypes.NewExecErrorWithReason(data.Ret)
 	}
 
-	return hexutil.Uint64(data.GasUsed), nil
+	// estimate for ethereum
+	// example: computed 21204 , ethereum 41646
+	return hexutil.Uint64(data.GasUsed + 40000), nil
 }
 
 // GetBlockByHash returns the block identified by hash.