[cocos2dx-js sdk integration] - Connection is not established using Python poco-sdk

http://top.gdl.netease.com/poco-res/poco-sdk-test-cocos2dx-js-demo-android.zip

I installed this demo cocos app. and ran below python command. It throws connection timeout error.

from poco.drivers.cocosjs import CocosJsPoco
poco = CocosJsPoco("ws://localhost:15003")

ERROR:
...
...
[rpc]waiting for connection...9
Traceback (most recent call last):
File "", line 1, in
File "/usr/local/lib/python2.7/site-packages/poco/drivers/cocosjs/__init__.py", line 102, in __init__
agent = CocosJsPocoAgent(port, device)
File "/usr/local/lib/python2.7/site-packages/poco/drivers/cocosjs/__init__.py", line 52, in __init__
self.c.connect()
File "/usr/local/lib/python2.7/site-packages/poco/utils/simplerpc/rpcclient.py", line 23, in connect
self._wait_connected(timeout)
File "/usr/local/lib/python2.7/site-packages/poco/utils/simplerpc/rpcclient.py", line 41, in _wait_connected
raise RpcConnectionError("Connecting Timeout")
RpcConnectionError: Connecting Timeout

Help me in understanding how to use this. Thanks.

Also, can someone share the source code of demo-cocos 2djs app. That will be helpful for me to integrate in my cocos2djs app. Thanks in advance!