diff --git a/tests/api/base/WebSocketClientTest.py b/tests/api/base/WebSocketClientTest.py
index 8d931ecf..dc9651dd 100644
--- a/tests/api/base/WebSocketClientTest.py
+++ b/tests/api/base/WebSocketClientTest.py
@@ -2,10 +2,10 @@
 import unittest
 
 from Promise import Promise
-from vnpy.api.websocket import WebSocketClient
+from vnpy.api.websocket import WebsocketClient
 
 
-class TestWebsocketClient(WebSocketClient):
+class TestWebsocketClient(WebsocketClient):
     
     def __init__(self):
         host = 'wss://echo.websocket.org'
diff --git a/vnpy/api/rest/RestClient.py b/vnpy/api/rest/RestClient.py
index a013668d..031c6214 100644
--- a/vnpy/api/rest/RestClient.py
+++ b/vnpy/api/rest/RestClient.py
@@ -88,7 +88,7 @@ class RestClient(object):
         self.urlBase = urlBase
 
     #----------------------------------------------------------------------
-    def _generateSession(self):
+    def _createSession(self):
         """"""
         return requests.session()
     
@@ -127,7 +127,7 @@ class RestClient(object):
                    params=None,     # type: dict
                    data=None,       # type: dict
                    headers=None,    # type: dict
-                   onFailed=None,   # type: Callable[[dict, Request], Any]
+                   onFailed=None,   # type: Callable[[int, Request], Any]
                    extra=None       # type: Any
                    ):               # type: (...)->Request
         """
@@ -151,7 +151,7 @@ class RestClient(object):
     
     #----------------------------------------------------------------------
     def _run(self):
-        session = self._generateSession()
+        session = self._createSession()
         while self._active:
             try:
                 request = self._queue.get(timeout=1)
diff --git a/vnpy/api/websocket/WebSocketClient.py b/vnpy/api/websocket/WebsocketClient.py
similarity index 95%
rename from vnpy/api/websocket/WebSocketClient.py
rename to vnpy/api/websocket/WebsocketClient.py
index 7576d5c0..a2e73382 100644
--- a/vnpy/api/websocket/WebSocketClient.py
+++ b/vnpy/api/websocket/WebsocketClient.py
@@ -11,7 +11,7 @@ import websocket
 from threading import Lock, Thread
 
 
-class WebSocketClient(object):
+class WebsocketClient(object):
     """
     Websocket API
     
@@ -36,8 +36,6 @@ class WebSocketClient(object):
     def __init__(self):
         """Constructor"""
         self.host = None  # type: str
-
-        self._createConnection = websocket.create_connection
         
         self._ws_lock = Lock()
         self._ws = None  # type: websocket.WebSocket
@@ -70,7 +68,8 @@ class WebSocketClient(object):
         """
         self._active = False
         self._disconnect()
-    
+
+    #----------------------------------------------------------------------
     def join(self):
         """
         等待所有工作线程退出
@@ -100,6 +99,10 @@ class WebSocketClient(object):
         if self._active:
             self._disconnect()
             self._connect()
+
+    #----------------------------------------------------------------------
+    def _createConnection(self, *args, **kwargs):
+        return websocket.create_connection(*args, **kwargs)
     
     #----------------------------------------------------------------------
     def _connect(self):
diff --git a/vnpy/api/websocket/__init__.py b/vnpy/api/websocket/__init__.py
index 5c44c43f..3accc1ac 100644
--- a/vnpy/api/websocket/__init__.py
+++ b/vnpy/api/websocket/__init__.py
@@ -1 +1 @@
-from .WebSocketClient import WebSocketClient
+from .WebsocketClient import WebsocketClient