在所有平台上一律使用select模型
diff --git a/dubbo/connection/connections.py b/dubbo/connection/connections.py
index b366e2f..26a9e6f 100644
--- a/dubbo/connection/connections.py
+++ b/dubbo/connection/connections.py
@@ -282,10 +282,11 @@
 
 
 # connection_pool在整个进程中是单例的
-if hasattr(select, 'epoll'):
-    connection_pool = EpollConnectionPool()
-else:
-    connection_pool = SelectConnectionPool()
+# if hasattr(select, 'epoll'):
+#     connection_pool = EpollConnectionPool()
+# else:
+#     connection_pool = SelectConnectionPool()
+connection_pool = SelectConnectionPool()
 
 
 class Connection(object):
diff --git a/setup.py b/setup.py
index 02f0ba4..3858de3 100644
--- a/setup.py
+++ b/setup.py
@@ -3,7 +3,7 @@
 
 setup(
     name='python-dubbo',
-    version='0.0.3-beta12',
+    version='0.0.3-beta13',
     url='https://github.com/RitterHou/python-dubbo',
     author='hourui',
     author_email='hourui@qianmi.com',