external_domains 内网站只能设置HTTPS？不支持只有HTTP的网站？

[ttestdock]

Traceback (most recent call last):
File "/var/lib/openshift/5833bfe789f5cfe6e200014b/app-root/runtime/repo/zmirror/zmirror.py", line 2405, in zmirror_enter
resp = main_function(input_path=input_path)
File "/var/lib/openshift/5833bfe789f5cfe6e200014b/app-root/runtime/repo/zmirror/zmirror.py", line 2481, in main_function
request_remote_site()
File "/var/lib/openshift/5833bfe789f5cfe6e200014b/app-root/runtime/repo/zmirror/zmirror.py", line 2012, in request_remote_site
data=parse.request_data_encoded,
File "/var/lib/openshift/5833bfe789f5cfe6e200014b/app-root/runtime/repo/zmirror/zmirror.py", line 1773, in send_request
verify=not developer_do_not_verify_ssl,
File "/var/lib/openshift/5833bfe789f5cfe6e200014b/python/virtenv/venv/lib/python3.3/site-packages/requests/sessions.py", line 609, in send
r = adapter.send(request, **kwargs)
File "/var/lib/openshift/5833bfe789f5cfe6e200014b/python/virtenv/venv/lib/python3.3/site-packages/requests/adapters.py", line 487, in send
raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPSConnectionPool(host='51.ruyo.net', port=443): Max retries exceeded with url: / (Caused by NewConnectionError('<requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7fe7a14b0dd0>: Failed to establish a new connection: [Errno 111] Connection refused',))