Jupyter Server Proxy on MyBinder

JupyterHub
1

I’d like to use ungit (which works by starting a server on localhost) on MyBinder. This was nearly easy to do just using Jupyter Server Proxy, and I’m hoping there’s an obvious solution to the problem that presented.

When I start the local server on port 8448 using the Binder terminal and go to a URL that looks like this:

hub.gke2.mybinder.org/user/betatim-vscode-binder-2r07b6uj/proxy/8448

…the page title changes to ‘ungit’, indicating that it is connecting to the localhost server. However, the page resources don’t load. When I look at the console warnings, there are a bunch of 404 errors trying to load resources at URLs like

hub.gke2.mybinder.org/plugins/branches/branches.css

(to take one random CSS file as an example). I can manually adjust the URL to

hub.gke2.mybinder.org/user/betatim-vscode-binder-2r07b6uj/proxy/8448/plugins/branches/branches.css

and the CSS loads just fine. So what I need to do is to somehow convince the server to retain the /user/betatim-vscode-binder-2r07b6uj/proxy/8448/ part of the URL when it makes these requests. I assume this can be done by hacking the server code, but I’m wondering if there’s a more general and/or convenient solution.

2

Ungit looks pretty cool!

You’ll probably need to set the ‘rootPath’ config variable of ungit - see Support the use of a URL root path by geeklain · Pull Request #609 · FredrikNoren/ungit · GitHub.

You might need to setup a simple jupyter_notebook_config.json or a python package to provide the option - see jupyter-rsession-proxy/jupyter_rsession_proxy at 3c6e224c94ea75242f9f611990855375d845a100 · jupyterhub/jupyter-rsession-proxy · GitHubinit.py#L72 for an example.

Hope this helps!

3

Thanks, that is helpful.

Neither here nor there, but before receiving this response, I had just watched your talk about Jupyter Server Proxy, which I found to be excellent and really useful. I’m really very grateful for all of the things that you and your collaborators do to develop and sustain the Jupyter ecosystem!

4

This made me happy, thank you :slight_smile: