diff --git a/dtmgrpc/tcc.go b/dtmgrpc/tcc.go
index f67c54c..1a28a55 100644
--- a/dtmgrpc/tcc.go
+++ b/dtmgrpc/tcc.go
@@ -36,15 +36,14 @@ func TccGlobalTransaction(dtm string, gid string, tccFunc TccGlobalFunc) (rerr e
 		x := recover()
 		if x == nil && rerr == nil {
 			_, rerr = dc.Submit(context.Background(), dr)
-		} else {
-			_, err := dc.Abort(context.Background(), dr)
-			if rerr == nil {
-				rerr = err
-			}
-			if x != nil {
-				panic(x)
-			}
-
+			return
+		}
+		_, err := dc.Abort(context.Background(), dr)
+		if rerr == nil {
+			rerr = err
+		}
+		if x != nil {
+			panic(x)
 		}
 	}()
 	return tccFunc(tcc)
diff --git a/dtmsvr/api.go b/dtmsvr/api.go
index d95308f..23d9c15 100644
--- a/dtmsvr/api.go
+++ b/dtmsvr/api.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 
 	"github.com/yedf/dtm/dtmcli"
+	"gorm.io/gorm/clause"
 )
 
 func svcSubmit(t *TransGlobal, waitResult bool) (interface{}, error) {
@@ -23,3 +24,33 @@ func svcPrepare(t *TransGlobal) (interface{}, error) {
 	t.saveNew(dbGet())
 	return dtmcli.ResultSuccess, nil
 }
+
+func svcAbort(t *TransGlobal, waitResult bool) (interface{}, error) {
+	db := dbGet()
+	dbt := TransFromDb(db, t.Gid)
+	if t.TransType != "xa" && t.TransType != "tcc" || dbt.Status != "prepared" && dbt.Status != "aborting" {
+		return M{"dtm_result": "FAILURE", "message": fmt.Sprintf("trans type: %s current status %s, cannot abort", dbt.TransType, dbt.Status)}, nil
+	}
+	return dbt.Process(db, waitResult), nil
+}
+
+func svcRegisterTccBranch(branch *TransBranch, data dtmcli.MS) (interface{}, error) {
+	db := dbGet()
+	dbt := TransFromDb(db, branch.Gid)
+	if dbt.Status != "prepared" {
+		return M{"dtm_result": "FAILURE", "message": fmt.Sprintf("current status: %s cannot register branch", dbt.Status)}, nil
+	}
+
+	branches := []TransBranch{*branch, *branch, *branch}
+	for i, b := range []string{"cancel", "confirm", "try"} {
+		branches[i].BranchType = b
+		branches[i].URL = data[b]
+	}
+
+	db.Must().Clauses(clause.OnConflict{
+		DoNothing: true,
+	}).Create(branches)
+	global := TransGlobal{Gid: branch.Gid}
+	global.touch(dbGet(), config.TransCronInterval)
+	return dtmcli.ResultSuccess, nil
+}
diff --git a/dtmsvr/api_grpc.go b/dtmsvr/api_grpc.go
index ac09687..7920db7 100644
--- a/dtmsvr/api_grpc.go
+++ b/dtmsvr/api_grpc.go
@@ -3,6 +3,7 @@ package dtmsvr
 import (
 	"context"
 
+	"github.com/yedf/dtm/dtmcli"
 	"github.com/yedf/dtm/dtmgrpc"
 	pb "github.com/yedf/dtm/dtmgrpc"
 	"google.golang.org/protobuf/types/known/emptypb"
@@ -22,3 +23,22 @@ func (s *dtmServer) Prepare(ctx context.Context, in *pb.DtmRequest) (*emptypb.Em
 	r, err := svcPrepare(TransFromDtmRequest(in))
 	return &emptypb.Empty{}, dtmgrpc.Result2Error(r, err)
 }
+
+func (s *dtmServer) Abort(ctx context.Context, in *pb.DtmRequest) (*emptypb.Empty, error) {
+	r, err := svcAbort(TransFromDtmRequest(in), in.WaitResult)
+	return &emptypb.Empty{}, dtmgrpc.Result2Error(r, err)
+}
+
+func (s *dtmServer) RegisterTccBranch(ctx context.Context, in *pb.DtmTccBranchRequest) (*emptypb.Empty, error) {
+	r, err := svcRegisterTccBranch(&TransBranch{
+		Gid:      in.Info.Gid,
+		BranchID: in.Info.BranchID,
+		Status:   "prepared",
+		Data:     in.BusiData,
+	}, dtmcli.MS{
+		"cancel":  in.Cancel,
+		"confirm": in.Confirm,
+		"try":     in.Try,
+	})
+	return &emptypb.Empty{}, dtmgrpc.Result2Error(r, err)
+}
diff --git a/dtmsvr/api_http.go b/dtmsvr/api_http.go
index edbff98..884d76f 100644
--- a/dtmsvr/api_http.go
+++ b/dtmsvr/api_http.go
@@ -37,13 +37,7 @@ func submit(c *gin.Context) (interface{}, error) {
 }
 
 func abort(c *gin.Context) (interface{}, error) {
-	db := dbGet()
-	t := TransFromContext(c)
-	dbt := TransFromDb(db, t.Gid)
-	if t.TransType != "xa" && t.TransType != "tcc" || dbt.Status != "prepared" && dbt.Status != "aborting" {
-		return M{"dtm_result": "FAILURE", "message": fmt.Sprintf("trans type: %s current status %s, cannot abort", dbt.TransType, dbt.Status)}, nil
-	}
-	return dbt.Process(db, c.Query("wait_result") == "true" || c.Query("wait_result") == "1"), nil
+	return svcAbort(TransFromContext(c), c.Query("wait_result") == "1")
 }
 
 func registerXaBranch(c *gin.Context) (interface{}, error) {
@@ -78,25 +72,7 @@ func registerTccBranch(c *gin.Context) (interface{}, error) {
 		Status:   "prepared",
 		Data:     data["data"],
 	}
-	db := dbGet()
-	dbt := TransFromDb(db, branch.Gid)
-	if dbt.Status != "prepared" {
-		return M{"dtm_result": "FAILURE", "message": fmt.Sprintf("current status: %s cannot register branch", dbt.Status)}, nil
-	}
-
-	branches := []TransBranch{branch, branch, branch}
-	for i, b := range []string{"cancel", "confirm", "try"} {
-		branches[i].BranchType = b
-		branches[i].URL = data[b]
-	}
-
-	db.Must().Clauses(clause.OnConflict{
-		DoNothing: true,
-	}).Create(branches)
-	e2p(err)
-	global := TransGlobal{Gid: branch.Gid}
-	global.touch(dbGet(), config.TransCronInterval)
-	return dtmcli.ResultSuccess, nil
+	return svcRegisterTccBranch(&branch, data)
 }
 
 func query(c *gin.Context) (interface{}, error) {