def getHttpProxyForUrl(url):
proxy = None
url_host = Util.parseUri(url)[1]
envProxy = HttpClient._getEnvVarProxy()
if envProxy and not (url_host in HttpClient._getEnvVarNoProxy()):
proxy_server, proxy_port = Util.parseUri(envProxy)[1:3]
proxy = httplib2.ProxyInfo(3, proxy_server, int(proxy_port), proxy_rdns=True)
return proxy
