diff --git a/dtmsvr/api_json_rpc.go b/dtmsvr/api_json_rpc.go
index 7ced4e6..8f9a571 100644
--- a/dtmsvr/api_json_rpc.go
+++ b/dtmsvr/api_json_rpc.go
@@ -25,11 +25,11 @@ type jrpcReq struct {
 func addJrpcRouter(engine *gin.Engine) {
 	type jrpcFunc = func(interface{}) interface{}
 	handlers := map[string]jrpcFunc{
-		"dtmserver.NewGid":         jrpcNewGid,
-		"dtmserver.Prepare":        jrpcPrepare,
-		"dtmserver.Submit":         jrpcSubmit,
-		"dtmserver.Abort":          jrpcAbort,
-		"dtmserver.RegisterBranch": jrpcRegisterBranch,
+		"dtmserver.newGid":         jrpcNewGid,
+		"dtmserver.prepare":        jrpcPrepare,
+		"dtmserver.submit":         jrpcSubmit,
+		"dtmserver.abort":          jrpcAbort,
+		"dtmserver.registerBranch": jrpcRegisterBranch,
 	}
 	engine.POST("/", func(c *gin.Context) {
 		began := time.Now()
diff --git a/dtmutil/consts.go b/dtmutil/consts.go
index 9f1afe4..08388e2 100644
--- a/dtmutil/consts.go
+++ b/dtmutil/consts.go
@@ -11,4 +11,6 @@ const (
 	DefaultHTTPServer = "http://localhost:36789/api/dtmsvr"
 	// DefaultGrpcServer default url for grpc server. used by test and examples
 	DefaultGrpcServer = "localhost:36790"
+	// DefaultJrpcServer default url for http json-rpc server. used by test and examples
+	DefaultJrpcServer = "http://localhost:36791"
 )