Failed to establish a new connection: [Errno 111] Connection refused

Scenario I first ran python -m visdom.server on my laptop. Then I SSHed into the remote server and ran demo.py, but encountered the following ConnectionError. I installed Visdom at both my laptop and the remote server using anaconda.

Error Detail The following error was encountered:

Traceback (most recent call last):
  File "/home/chenzh/anaconda2/envs/py36/lib/python3.6/site-packages/requests/packages/urllib3/connection.py", line 141, in _new_conn
    (self.host, self.port), self.timeout, **extra_kw)
  File "/home/chenzh/anaconda2/envs/py36/lib/python3.6/site-packages/requests/packages/urllib3/util/connection.py", line 83, in create_connection
    raise err
  File "/home/chenzh/anaconda2/envs/py36/lib/python3.6/site-packages/requests/packages/urllib3/util/connection.py", line 73, in create_connection
    sock.connect(sa)
ConnectionRefusedError: [Errno 111] Connection refused

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/chenzh/anaconda2/envs/py36/lib/python3.6/site-packages/requests/packages/urllib3/connectionpool.py", line 600, in urlopen
    chunked=chunked)
  File "/home/chenzh/anaconda2/envs/py36/lib/python3.6/site-packages/requests/packages/urllib3/connectionpool.py", line 356, in _make_request
    conn.request(method, url, **httplib_request_kw)
  File "/home/chenzh/anaconda2/envs/py36/lib/python3.6/http/client.py", line 1239, in request
    self._send_request(method, url, body, headers, encode_chunked)
  File "/home/chenzh/anaconda2/envs/py36/lib/python3.6/http/client.py", line 1285, in _send_request
    self.endheaders(body, encode_chunked=encode_chunked)
  File "/home/chenzh/anaconda2/envs/py36/lib/python3.6/http/client.py", line 1234, in endheaders
    self._send_output(message_body, encode_chunked=encode_chunked)
  File "/home/chenzh/anaconda2/envs/py36/lib/python3.6/http/client.py", line 1026, in _send_output
    self.send(msg)
  File "/home/chenzh/anaconda2/envs/py36/lib/python3.6/http/client.py", line 964, in send
    self.connect()
  File "/home/chenzh/anaconda2/envs/py36/lib/python3.6/site-packages/requests/packages/urllib3/connection.py", line 166, in connect
    conn = self._new_conn()
  File "/home/chenzh/anaconda2/envs/py36/lib/python3.6/site-packages/requests/packages/urllib3/connection.py", line 150, in _new_conn
    self, "Failed to establish a new connection: %s" % e)
requests.packages.urllib3.exceptions.NewConnectionError: <requests.packages.urllib3.connection.HTTPConnection object at 0x7f65b3bff780>: Failed to establish a new connection: [Errno 111] Connection refused

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/chenzh/anaconda2/envs/py36/lib/python3.6/site-packages/requests/adapters.py", line 438, in send
    timeout=timeout
  File "/home/chenzh/anaconda2/envs/py36/lib/python3.6/site-packages/requests/packages/urllib3/connectionpool.py", line 649, in urlopen
    _stacktrace=sys.exc_info()[2])
  File "/home/chenzh/anaconda2/envs/py36/lib/python3.6/site-packages/requests/packages/urllib3/util/retry.py", line 388, in increment
    raise MaxRetryError(_pool, url, error or ResponseError(cause))
requests.packages.urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='localhost', port=8097): Max retries exceeded with url: /env/main (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x7f65b3bff780>: Failed to establish a new connection: [Errno 111] Connection refused',))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/chenzh/anaconda2/envs/py36/lib/python3.6/site-packages/visdom/__init__.py", line 446, in _send
    data=json.dumps(msg),
  File "/home/chenzh/anaconda2/envs/py36/lib/python3.6/site-packages/requests/api.py", line 112, in post
    return request('post', url, data=data, json=json, **kwargs)
  File "/home/chenzh/anaconda2/envs/py36/lib/python3.6/site-packages/requests/api.py", line 58, in request
    return session.request(method=method, url=url, **kwargs)
  File "/home/chenzh/anaconda2/envs/py36/lib/python3.6/site-packages/requests/sessions.py", line 518, in request
    resp = self.send(prep, **send_kwargs)
  File "/home/chenzh/anaconda2/envs/py36/lib/python3.6/site-packages/requests/sessions.py", line 639, in send
    r = adapter.send(request, **kwargs)
  File "/home/chenzh/anaconda2/envs/py36/lib/python3.6/site-packages/requests/adapters.py", line 502, in send
    raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPConnectionPool(host='localhost', port=8097): Max retries exceeded with url: /env/main (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x7f65b3bff780>: Failed to establish a new connection: [Errno 111] Connection refused',))
The visdom experienced an exception while running: TypeError("check_connection() got an unexpected keyword argument 'timeout_seconds'",)
The demo displays up-to-date functionality with the GitHub version, which may not yet be pushed to pip. Please upgrade using `pip install -e .` or `easy_install .`
If this does not resolve the problem, please open an issue on our GitHub.

Screenshots

Additional context For SSH, I tried both ssh remote_user@remote_host and ssh -N -L localhost:8097:localhost:8097 remote_user@remote_host, but in both ways I found the above error.

Thanks for your time!

[JackUrb]

If you run python -m visdom.server In the background on the same machine you run your above snippet on, do you still have the problem?

Also once you plan on remotely connecting you’ll have to run python -m visdom.server on one machine and then connect to it using the hostname and port arguments for visdom.Visdom.

[Psycoy]

@JackUrb So basically I am running the python -m visdom.server and demo.py on two panes of tmux on the server. I first ran python -m visdom.server and then run the demo.py, while it reports the same Connection error. Do you know what is happening?