diff --git a/config/config.go b/config/config.go
index bd81d37..8c493dc 100644
--- a/config/config.go
+++ b/config/config.go
@@ -1,7 +1,10 @@
 package config
 
+import "net/http"
+
 var Host = "api.huobi.pro"
 var AccessKey = "xxxx"
 var AccountId = "1234"
 var SubUid int64 = 5678
 var SubUids string = "5678"
+var DefaultClient = &http.Client{}
diff --git a/internal/httprequest.go b/internal/httprequest.go
index 2dd14f4..e5122fb 100644
--- a/internal/httprequest.go
+++ b/internal/httprequest.go
@@ -1,17 +1,18 @@
 package internal
 
 import (
-	"github.com/huobirdcenter/huobi_golang/logging/perflogger"
 	"io/ioutil"
-	"net/http"
 	"strings"
+
+	"github.com/huobirdcenter/huobi_golang/config"
+	"github.com/huobirdcenter/huobi_golang/logging/perflogger"
 )
 
 func HttpGet(url string) (string, error) {
 	logger := perflogger.GetInstance()
 	logger.Start()
 
-	resp, err := http.Get(url)
+	resp, err := config.DefaultClient.Get(url)
 	if err != nil {
 		return "", err
 	}
@@ -27,7 +28,7 @@ func HttpPost(url string, body string) (string, error) {
 	logger := perflogger.GetInstance()
 	logger.Start()
 
-	resp, err := http.Post(url, "application/json", strings.NewReader(body))
+	resp, err := config.DefaultClient.Post(url, "application/json", strings.NewReader(body))
 	if err != nil {
 		return "", err
 	}
diff --git a/pkg/model/order/cancelorderbyidresponse.go b/pkg/model/order/cancelorderbyidresponse.go
index bedcd52..1d88eb2 100644
--- a/pkg/model/order/cancelorderbyidresponse.go
+++ b/pkg/model/order/cancelorderbyidresponse.go
@@ -5,5 +5,5 @@ type CancelOrderByIdResponse struct {
 	Data         string `json:"data"`
 	ErrorCode    string `json:"err-code"`
 	ErrorMessage string `json:"err-msg"`
-	OrderState   string `json:"order-state"`
+	OrderState   int    `json:"order-state"`
 }