The token string appears twice in the url in the console when running jupyter notebook

[rs2]

No description provided.

[tiangolo]

I think I'm experiencing the same issue.

I'm using Jupyter Notebooks from a Docker container.

Steps to reproduce:

With a Dockerfile with:

FROM python:3.6

RUN pip install jupyter
EXPOSE 8888

Build:

docker build -t jup .

Start a bash session:

docker run -it -p 8888:8888 jup bash

Start a Jupyter Notebook:

jupyter notebook --ip=0.0.0.0 --allow-root

The output is like:

[I 16:32:53.474 NotebookApp] Serving notebooks from local directory: /
[I 16:32:53.474 NotebookApp] 0 active kernels
[I 16:32:53.474 NotebookApp] The Jupyter Notebook is running at:
[I 16:32:53.474 NotebookApp] http://4db43b31b8ad:8888/?token=d85ad5a1f5327cf823326826dcc54119c5a3920620eab5b2
[I 16:32:53.474 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[W 16:32:53.474 NotebookApp] No web browser found: could not locate runnable browser.
[C 16:32:53.474 NotebookApp]

    Copy/paste this URL into your browser when you connect for the first time,
    to login with a token:
        http://4db43b31b8ad:8888/?token=d85ad5a1f5327cf823326826dcc54119c5a3920620eab5b2&token=d85ad5a1f5327cf823326826dcc54119c5a3920620eab5b2

The expected output in the last section would be:

Copy/paste this URL into your browser when you connect for the first time,
    to login with a token:
        http://4db43b31b8ad:8888/?token=d85ad5a1f5327cf823326826dcc54119c5a3920620eab5b2

But the token parameter is repeated. And using it that way in something different than a browser, e.g. Visual Studio Code Jupyter extension, it doesn't work and throws an error.

[VanDavv]

I'm having this issue also.

I think the output should be like

Copy/paste this URL into your browser when you connect for the first time,
    to login with a token:
        http://0.0.0.0:8888/?token=d85ad5a1f5327cf823326826dcc54119c5a3920620eab5b2

[glebashnik]

I have double token issue with JupyterLab, running from Docker.

What about ip, why it's docker container id instead of the ip? A feature or a bug?

[takluyver]

#3656 eliminates the double token.

The thing with the docker container ID thing is separate. It's meant to be a feature, but it doesn't work very well with docker. See #3605 for more about that.