fix miner message filter nonce checking

node/impl/full/chain.go

@@ -68,6 +68,7 @@ func (a *ChainAPI) ChainGetBlockMessages(ctx context.Context, msg cid.Cid) (*api
 	}, nil
 }
 
+// TODO: Maybe deprecate in favor of just using ChainGetTipSetMessages?
 func (a *ChainAPI) ChainGetParentMessages(ctx context.Context, bcid cid.Cid) ([]api.Message, error) {
 	b, err := a.Chain.GetBlock(bcid)
 	if err != nil {
@@ -101,6 +102,28 @@ func (a *ChainAPI) ChainGetParentMessages(ctx context.Context, bcid cid.Cid) ([]
 	return out, nil
 }
 
+func (a *ChainAPI) ChainGetTipSetMessages(ctx context.Context, tsk types.TipSetKey) ([]api.Message, error) {
+	ts, err := a.Chain.LoadTipSet(tsk.Cids())
+	if err != nil {
+		return nil, xerrors.Errorf("failed to load tipset from key: %w", err)
+	}
+
+	messages, err := a.Chain.MessagesForTipset(ts)
+	if err != nil {
+		return nil, xerrors.Errorf("getting messages for tipset: %w", err)
+	}
+
+	var out []api.Message
+	for _, m := range messages {
+		out = append(out, api.Message{
+			Cid:     m.Cid(),
+			Message: m.VMMessage(),
+		})
+	}
+
+	return out, nil
+}
+
 func (a *ChainAPI) ChainGetParentReceipts(ctx context.Context, bcid cid.Cid) ([]*types.MessageReceipt, error) {
 	b, err := a.Chain.GetBlock(bcid)
 	if err != nil {