add MPoolGetNonce

gateway/node.go

@@ -60,6 +60,7 @@ type TargetAPI interface {
 	ChainPutObj(context.Context, blocks.Block) error
 	ChainGetGenesis(context.Context) (*types.TipSet, error)
 	GasEstimateMessageGas(ctx context.Context, msg *types.Message, spec *api.MessageSendSpec, tsk types.TipSetKey) (*types.Message, error)
+        MpoolGetNonce(ctx context.Context, addr address.Address) (uint64, error)
 	MpoolPushUntrusted(ctx context.Context, sm *types.SignedMessage) (cid.Cid, error)
 	MsigGetAvailableBalance(ctx context.Context, addr address.Address, tsk types.TipSetKey) (types.BigInt, error)
 	MsigGetVested(ctx context.Context, addr address.Address, start types.TipSetKey, end types.TipSetKey) (types.BigInt, error)

gateway/proxy_fil.go

@@ -188,6 +188,13 @@ func (gw *Node) GasEstimateMessageGas(ctx context.Context, msg *types.Message, s
 	return gw.target.GasEstimateMessageGas(ctx, msg, spec, tsk)
 }
 
+func (gw *Node) MpoolGetNonce(ctx context.Context, addr address.Address) (uint64, error) {
+        if err := gw.limit(ctx, stateRateLimitTokens); err != nil {
+                return 0, err
+        }
+        return gw.target.MpoolGetNonce(ctx, addr)
+}
+
 func (gw *Node) MpoolPush(ctx context.Context, sm *types.SignedMessage) (cid.Cid, error) {
 	if err := gw.limit(ctx, stateRateLimitTokens); err != nil {
 		return cid.Cid{}, err