Eth API: make net_version return the chain ID.

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)
+}

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) {