No connection possible to IPV6 address

[pinpuk]

General information

• OS Platform and Distribution (e.g., Linux Ubuntu 16.04): Mac OS version 10.13.6
• ElasticHQ Version: 3.5.12
• Elasticsearch Version: 6.5.3
• Python version (ignore is using docker image): I'm using Docker :)
• Browser Vendor and Version (if applicable):

Issue Description

I could not connect to an IPV6 address

Source Code / Logs

Normally I need to place an IPV6 host between brackets like : http://[IPaddress]:9200

--- Logging error ---
Traceback (most recent call last):
File "/usr/local/lib/python3.6/site-packages/urllib3/connection.py", line 141, in _new_conn
(self.host, self.port), self.timeout, **extra_kw)
File "/usr/local/lib/python3.6/site-packages/urllib3/util/connection.py", line 60, in create_connection
for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM):
File "/usr/local/lib/python3.6/site-packages/eventlet/support/greendns.py", line 527, in getaddrinfo
socktype, proto, aiflags)
File "/usr/local/lib/python3.6/socket.py", line 745, in getaddrinfo
for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno -2] Name does not resolve

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/local/lib/python3.6/site-packages/urllib3/connectionpool.py", line 601, in urlopen
chunked=chunked)
File "/usr/local/lib/python3.6/site-packages/urllib3/connectionpool.py", line 357, in _make_request
conn.request(method, url, **httplib_request_kw)
File "/usr/local/lib/python3.6/http/client.py", line 1239, in request
self._send_request(method, url, body, headers, encode_chunked)
File "/usr/local/lib/python3.6/http/client.py", line 1285, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "/usr/local/lib/python3.6/http/client.py", line 1234, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "/usr/local/lib/python3.6/http/client.py", line 1026, in _send_output
self.send(msg)
File "/usr/local/lib/python3.6/http/client.py", line 964, in send
self.connect()
File "/usr/local/lib/python3.6/site-packages/urllib3/connection.py", line 166, in connect
conn = self._new_conn()
File "/usr/local/lib/python3.6/site-packages/urllib3/connection.py", line 150, in _new_conn
self, "Failed to establish a new connection: %s" % e)
urllib3.exceptions.NewConnectionError: <urllib3.connection.HTTPConnection object at 0x7f81691710f0>: Failed to establish a new connection: [Errno -2] Name does not resolve

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/local/lib/python3.6/site-packages/requests/adapters.py", line 449, in send
timeout=timeout
File "/usr/local/lib/python3.6/site-packages/urllib3/connectionpool.py", line 639, in urlopen
_stacktrace=sys.exc_info()[2])
File "/usr/local/lib/python3.6/site-packages/urllib3/util/retry.py", line 388, in increment
raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='2a01:238:4396:2400:32b2:8a60:1a31:aa6', port=80): Max retries exceeded with url: / (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f81691710f0>: Failed to establish a new connection: [Errno -2] Name does not resolve',))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/src/elastichq/service/ConnectionService.py", line 106, in create_connection
response = requests.get(scheme + "://" + ip + ":" + port, timeout=REQUEST_TIMEOUT)
File "/usr/local/lib/python3.6/site-packages/requests/api.py", line 75, in get
return request('get', url, params=params, **kwargs)
File "/usr/local/lib/python3.6/site-packages/requests/api.py", line 60, in request
return session.request(method=method, url=url, **kwargs)
File "/usr/local/lib/python3.6/site-packages/requests/sessions.py", line 533, in request
resp = self.send(prep, **send_kwargs)
File "/usr/local/lib/python3.6/site-packages/requests/sessions.py", line 646, in send
r = adapter.send(request, **kwargs)
File "/usr/local/lib/python3.6/site-packages/requests/adapters.py", line 516, in send
raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPConnectionPool(host='2a01:238:4396:2400:32b2:8a60:1a31:aa6', port=80): Max retries exceeded with url: / (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f81691710f0>: Failed to establish a new connection: [Errno -2] Name does not resolve',))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/local/lib/python3.6/logging/init.py", line 994, in emit
msg = self.format(record)
File "/usr/local/lib/python3.6/logging/init.py", line 840, in format
return fmt.format(record)
File "/usr/local/lib/python3.6/logging/init.py", line 577, in format
record.message = record.getMessage()
File "/usr/local/lib/python3.6/logging/init.py", line 338, in getMessage
msg = msg % self.args
TypeError: not all arguments converted during string formatting
Call stack:
File "/usr/local/lib/python3.6/site-packages/eventlet/greenthread.py", line 221, in main
result = function(*args, **kwargs)
File "/usr/local/lib/python3.6/site-packages/gunicorn/workers/geventlet.py", line 116, in handle
super(EventletWorker, self).handle(listener, client, addr)
File "/usr/local/lib/python3.6/site-packages/gunicorn/workers/async.py", line 56, in handle
self.handle_request(listener_name, req, client, addr)
File "/usr/local/lib/python3.6/site-packages/gunicorn/workers/async.py", line 107, in handle_request
respiter = self.wsgi(environ, resp.start_response)
File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1997, in call
return self.wsgi_app(environ, start_response)
File "/usr/local/lib/python3.6/site-packages/flask_socketio/init.py", line 43, in call
start_response)
File "/usr/local/lib/python3.6/site-packages/engineio/middleware.py", line 67, in call
return self.wsgi_app(environ, start_response)
File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1982, in wsgi_app
response = self.full_dispatch_request()
File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1612, in full_dispatch_request
rv = self.dispatch_request()
File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1598, in dispatch_request
return self.view_functionsrule.endpoint
File "/usr/local/lib/python3.6/site-packages/flask_restful/init.py", line 480, in wrapper
resp = resource(*args, **kwargs)
File "/usr/local/lib/python3.6/site-packages/flask/views.py", line 84, in view
return self.dispatch_request(*args, **kwargs)
File "/usr/local/lib/python3.6/site-packages/flask_restful/init.py", line 595, in dispatch_request
resp = meth(*args, **kwargs)
File "/src/elastichq/common/exceptions.py", line 29, in _request_wrapper
return functor(*args, **kwargs)
File "/src/elastichq/api/clusters.py", line 129, in post
client_cert=client_cert)
File "/src/elastichq/service/ConnectionService.py", line 173, in create_connection
LOG.error(message, ex)
Message: 'Unable to create connection to: http://[2a01:238:4396:2400:32b2:8a60:1a31:aa6]:80'
Arguments: (ConnectionError(MaxRetryError("HTTPConnectionPool(host='2a01:238:4396:2400:32b2:8a60:1a31:aa6', port=80): Max retries exceeded with url: / (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f81691710f0>: Failed to establish a new connection: [Errno -2] Name does not resolve',))",),),)
--- Logging error ---
Traceback (most recent call last):
File "/usr/local/lib/python3.6/site-packages/urllib3/connection.py", line 141, in _new_conn
(self.host, self.port), self.timeout, **extra_kw)
File "/usr/local/lib/python3.6/site-packages/urllib3/util/connection.py", line 60, in create_connection
for res in socket.getaddrinfo(host, port, family, socket.SOCK_STREAM):
File "/usr/local/lib/python3.6/site-packages/eventlet/support/greendns.py", line 527, in getaddrinfo
socktype, proto, aiflags)
File "/usr/local/lib/python3.6/socket.py", line 745, in getaddrinfo
for res in _socket.getaddrinfo(host, port, family, type, proto, flags):

Please note that at time of the test the ES server was available.

Be Patient

I have a day job. ;-)