Merge pull request #1 from harley-que/master

fixed fatal bug in client/upstream.py:puship, requesting with not format...
Enhance security by filtering out the hostnames not in the client's config file. As a result, only hostnames that are tracked/registered in the client's config file will be updated in the host file.
Merge branch 'master' of https://github.com/x1angli/DDNS-chiasma