Is the remote kernel functionality broken?

[UndeadKernel]

I cannot seem to get the remote kernel functionality to work.

In a remote server, to start jupyter notebooks, I issue the command:

jupyter notebook --no-browser

This creates a session file that looks like /home/boy/.local/share/jupyter/runtime/nbserver-30692.json.
This file contains these fields:

{
  "url": "http://localhost:8888/",
  "pid": 30692,
  "secure": false,
  "base_url": "/",
  "port": 8888,
  "hostname": "localhost",
  "notebook_dir": "/home/boy"
}

In an org file I then specify the session

:session /ssh:entropyOs:/home/boy/.local/share/jupyter/runtime/nbserver-30692.json

Jupyter fails with the error message:

Format specifier doesn’t match argument type

given that in this line the parameters to the format function are all nil.

Am I doing things correctly or did something break?

[nnicandro]

See #81. The Jupyter notebook isn’t supported since the ZMQ sockets don’t get exposed. I’m trying to add in support for the Jupyter gateway (https://github.com/jupyter/kernel_gateway) which uses websockets for communication, which the notebook also uses, so hopefully support is coming soon.

[UndeadKernel]

Go it. Didn't realize it was the same reported error.
I guess the confusion comes from the instructions in the README that explain how to connect to a remote kernel. It'd probably be a good idea to specify how to run a kernel remotely so that the org client can be used. I now realize you need to manually start a kernel with jupyter kernel --kernel=, which was not obvious to me.
Also, is the syntax for specifying remote sessions correct in the README? I was first experimenting with session names like:

:session /entropyOs:/\<dir\>/kernel-30692.json

but then realize that it should instead probably be:

:session /ssh:entropyOs:/\<dir\>/kernel-30692.json

Notice that the second example has ssh: in it.

[nnicandro]

Since this issue has appeared twice, the README probably should be updated.

Yes your right about the session format, I think the /entropyOs: form was allowed in an older Emacs version.