From 7ce92f1422d9b28b4454631e36725f0e81356d1d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ra=C3=BAl=20Kripalani?= <raul@protocol.ai>
Date: Sat, 11 Mar 2023 23:26:26 +0000
Subject: [PATCH 1/2] Eth API: make net_version return the chain ID.

---
 itests/eth_api_test.go | 15 +++++++++++++++
 node/impl/full/eth.go  |  9 ++-------
 2 files changed, 17 insertions(+), 7 deletions(-)

diff --git a/itests/eth_api_test.go b/itests/eth_api_test.go
index c24b32416..6506b01b1 100644
--- a/itests/eth_api_test.go
+++ b/itests/eth_api_test.go
@@ -2,9 +2,11 @@ package itests
 
 import (
 	"context"
+	"strconv"
 	"testing"
 	"time"
 
+	"github.com/filecoin-project/lotus/build"
 	"github.com/stretchr/testify/require"
 
 	"github.com/filecoin-project/go-state-types/builtin"
@@ -109,3 +111,16 @@ func TestEthGetGenesis(t *testing.T) {
 	require.NoError(t, err)
 	require.Equal(t, ethBlk.Hash, genesisHash)
 }
+
+func TestNetVersion(t *testing.T) {
+	blockTime := 100 * time.Millisecond
+	client, _, ens := kit.EnsembleMinimal(t, kit.MockProofs(), kit.ThroughRPC())
+	ens.InterconnectAll().BeginMining(blockTime)
+
+	ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
+	defer cancel()
+
+	version, err := client.NetVersion(ctx)
+	require.NoError(t, err)
+	require.Equal(t, strconv.Itoa(build.Eip155ChainId), version)
+}
diff --git a/node/impl/full/eth.go b/node/impl/full/eth.go
index d8271fcdb..662531b7c 100644
--- a/node/impl/full/eth.go
+++ b/node/impl/full/eth.go
@@ -766,13 +766,8 @@ func (a *EthModule) EthFeeHistory(ctx context.Context, p jsonrpc.RawParams) (eth
 	return ret, nil
 }
 
-func (a *EthModule) NetVersion(ctx context.Context) (string, error) {
-	// Note that networkId is not encoded in hex
-	nv, err := a.StateNetworkVersion(ctx, types.EmptyTSK)
-	if err != nil {
-		return "", err
-	}
-	return strconv.FormatUint(uint64(nv), 10), nil
+func (a *EthModule) NetVersion(_ context.Context) (string, error) {
+	return strconv.FormatInt(build.Eip155ChainId, 10), nil
 }
 
 func (a *EthModule) NetListening(ctx context.Context) (bool, error) {

From 4763104b99fc2f518ac6d6cd8ef6d00af5a89758 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ra=C3=BAl=20Kripalani?= <raul@protocol.ai>
Date: Sun, 12 Mar 2023 00:42:56 +0000
Subject: [PATCH 2/2] fix imports.

---
 itests/eth_api_test.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/itests/eth_api_test.go b/itests/eth_api_test.go
index 6506b01b1..43b4b5266 100644
--- a/itests/eth_api_test.go
+++ b/itests/eth_api_test.go
@@ -6,11 +6,11 @@ import (
 	"testing"
 	"time"
 
-	"github.com/filecoin-project/lotus/build"
 	"github.com/stretchr/testify/require"
 
 	"github.com/filecoin-project/go-state-types/builtin"
 
+	"github.com/filecoin-project/lotus/build"
 	"github.com/filecoin-project/lotus/chain/types"
 	"github.com/filecoin-project/lotus/chain/types/ethtypes"
 	"github.com/filecoin-project/lotus/chain/wallet/key"