diff --git a/okex-python-sdk-api-v5/okex/client.py b/okex-python-sdk-api-v5/okex/client.py
index 7e91174d..9e62c970 100644
--- a/okex-python-sdk-api-v5/okex/client.py
+++ b/okex-python-sdk-api-v5/okex/client.py
@@ -5,13 +5,12 @@
 
 class Client(object):
 
-    def __init__(self, api_key, api_secret_key, passphrase, use_server_time=False, flag='1'):
+    def __init__(self, api_key, api_secret_key, passphrase, use_server_time=False):
 
         self.API_KEY = api_key
         self.API_SECRET_KEY = api_secret_key
         self.PASSPHRASE = passphrase
         self.use_server_time = use_server_time
-        self.flag = flag
 
     def _request(self, method, request_path, params):
 
@@ -29,7 +28,7 @@ def _request(self, method, request_path, params):
         body = json.dumps(params) if method == c.POST else ""
 
         sign = utils.sign(utils.pre_hash(timestamp, method, request_path, str(body)), self.API_SECRET_KEY)
-        header = utils.get_header(self.API_KEY, sign, timestamp, self.PASSPHRASE, self.flag)
+        header = utils.get_header(self.API_KEY, sign, timestamp, self.PASSPHRASE)
 
         # send request
         response = None
@@ -37,11 +36,11 @@ def _request(self, method, request_path, params):
         print("url:", url)
         # print("headers:", header)
         print("body:", body)
-
+#proxies parameter e.g.1087
         if method == c.GET:
-            response = requests.get(url, headers=header)
+            response = requests.get(url, headers=header,proxies={'http': 'http://127.0.0.1:1087','https': 'https://127.0.0.1:1087'})
         elif method == c.POST:
-            response = requests.post(url, data=body, headers=header)
+            response = requests.post(url, data=body, headers=header,pproxies={'http': 'http://127.0.0.1:1087','https': 'https://127.0.0.1:1087'})
 
         # exception handle
         # print(response.headers)