diff --git a/Config.py b/Config.py
index 752ebde..f98f204 100644
--- a/Config.py
+++ b/Config.py
@@ -1,12 +1,24 @@
-#Config
+# Config
+TRANSFER_MUL = 1.0
+API_INTERFACE = 'mysql'
+
+# Mysql
 MYSQL_HOST = 'mdss.mengsky.net'
 MYSQL_PORT = 3306
 MYSQL_USER = 'ss'
 MYSQL_PASS = 'ss'
 MYSQL_DB = 'shadowsocks'
-MYSQL_TRANSFER_MUL = 1.0
 MYSQL_UPDATE_TIME = 60
 
+# API
+API_URL = 'breakwa11.org'
+API_PORT = 80
+API_PATH = '/mu/v2/'
+API_TOKEN = 'abcdef'
+API_NODE_ID = 'id001'
+API_UPDATE_TIME = 60
+
+# Manager (ignore this)
 MANAGE_PASS = 'ss233333333'
 #if you want manage in other server you should set this value to global ip
 MANAGE_BIND_IP = '127.0.0.1'
diff --git a/db_transfer.py b/db_transfer.py
index d5c6994..8b46503 100644
--- a/db_transfer.py
+++ b/db_transfer.py
@@ -39,16 +39,16 @@ class DbTransfer(object):
 					continue
 				elif last_transfer[id][0] <= curr_transfer[id][0] and \
 				last_transfer[id][1] <= curr_transfer[id][1]:
-					dt_transfer[id] = [int((curr_transfer[id][0] - last_transfer[id][0]) * Config.MYSQL_TRANSFER_MUL),
-										int((curr_transfer[id][1] - last_transfer[id][1]) * Config.MYSQL_TRANSFER_MUL)]
+					dt_transfer[id] = [int((curr_transfer[id][0] - last_transfer[id][0]) * Config.TRANSFER_MUL),
+										int((curr_transfer[id][1] - last_transfer[id][1]) * Config.TRANSFER_MUL)]
 				else:
-					dt_transfer[id] = [int(curr_transfer[id][0] * Config.MYSQL_TRANSFER_MUL),
-										int(curr_transfer[id][1] * Config.MYSQL_TRANSFER_MUL)]
+					dt_transfer[id] = [int(curr_transfer[id][0] * Config.TRANSFER_MUL),
+										int(curr_transfer[id][1] * Config.TRANSFER_MUL)]
 			else:
 				if curr_transfer[id][0] == 0 and curr_transfer[id][1] == 0:
 					continue
-				dt_transfer[id] = [int(curr_transfer[id][0] * Config.MYSQL_TRANSFER_MUL),
-									int(curr_transfer[id][1] * Config.MYSQL_TRANSFER_MUL)]
+				dt_transfer[id] = [int(curr_transfer[id][0] * Config.TRANSFER_MUL),
+									int(curr_transfer[id][1] * Config.TRANSFER_MUL)]
 
 		query_head = 'UPDATE user'
 		query_sub_when = ''
@@ -166,10 +166,10 @@ class DbTransfer(object):
 	def del_servers():
 		for port in ServerPool.get_instance().tcp_servers_pool.keys():
 			if ServerPool.get_instance().server_is_run(port) > 0:
-					ServerPool.get_instance().cb_del_server(port)
+				ServerPool.get_instance().cb_del_server(port)
 		for port in ServerPool.get_instance().tcp_ipv6_servers_pool.keys():
 			if ServerPool.get_instance().server_is_run(port) > 0:
-					ServerPool.get_instance().cb_del_server(port)
+				ServerPool.get_instance().cb_del_server(port)
 
 	@staticmethod
 	def thread_db():
@@ -190,7 +190,7 @@ class DbTransfer(object):
 					trace = traceback.format_exc()
 					logging.error(trace)
 					#logging.warn('db thread except:%s' % e)
-				if DbTransfer.get_instance().event.wait(Config.MYSQL_UPDATE_TIME):
+				if DbTransfer.get_instance().event.wait(Config.MYSQL_UPDATE_TIME) or not ServerPool.get_instance().thread.is_alive():
 					break
 		except KeyboardInterrupt as e:
 			pass
diff --git a/server.py b/server.py
index a28f026..db375ad 100644
--- a/server.py
+++ b/server.py
@@ -50,8 +50,8 @@ def main():
 		thread = MainThread()
 		thread.start()
 		try:
-			while True:
-				time.sleep(99999)
+			while thread.is_alive():
+				time.sleep(10)
 		except (KeyboardInterrupt, IOError, OSError) as e:
 			import traceback
 			traceback.print_exc()
diff --git a/server_pool.py b/server_pool.py
index cf200e1..bcfb731 100644
--- a/server_pool.py
+++ b/server_pool.py
@@ -64,8 +64,8 @@ class ServerPool(object):
 		self.stat_counter = {}
 
 		self.loop = eventloop.EventLoop()
-		thread = MainThread( (self.loop, self.dns_resolver, self.mgr) )
-		thread.start()
+		self.thread = MainThread( (self.loop, self.dns_resolver, self.mgr) )
+		self.thread.start()
 
 	@staticmethod
 	def get_instance():
diff --git a/shadowsocks/tcprelay.py b/shadowsocks/tcprelay.py
index 4fb0dd7..77331d8 100644
--- a/shadowsocks/tcprelay.py
+++ b/shadowsocks/tcprelay.py
@@ -170,7 +170,7 @@ class TCPRelayHandler(object):
         self.last_activity = 0
         self._update_activity()
         self._server.add_connection(1)
-        self._server.stat_add(common.to_str(self._client_address[0]), 1)
+        self._server.stat_add(self._client_address[0], 1)
 
     def __hash__(self):
         # default __hash__ is id / 16
@@ -878,7 +878,7 @@ class TCPRelayHandler(object):
         self._dns_resolver.remove_callback(self._handle_dns_resolved)
         self._server.remove_handler(self)
         self._server.add_connection(-1)
-        self._server.stat_add(common.to_str(self._client_address[0]), -1)
+        self._server.stat_add(self._client_address[0], -1)
 
 class TCPRelay(object):
     def __init__(self, config, dns_resolver, is_local, stat_callback=None, stat_counter=None):