URL opener not working

[bijucyborg]

Hi,

I have tried two options to access a local process

---

Conf1

• title: app
  description: Example of opening a URL in a tab
  source: http://127.0.0.1:7860/
  type: url
  catalog: Another catalog
  args:
  sandbox: [ 'allow-same-origin', 'allow-scripts', 'allow-downloads', 'allow-modals', 'allow-popups']

Although the web app is listening on port 7860

(base) root@40d16fc778ba:~# curl http://127.0.0.1:7860/

<title>H2O Wave</title>

---

Conf2

• title: app
  description:
  source: http://127.0.0.1:7860/
  cwd: ../../../../h2o-llmstudio/
  type: local-server
  args:
  • make
  • wave
    catalog: Another catalog

It launches the program because I can now do a curl and see the page.

But the jupyter logs show the following

  File "/opt/conda/lib/python3.10/site-packages/tornado/iostream.py", line 1181, in connect
    self.socket.connect(address)
OSError: [Errno 99] Cannot assign requested address

[E 2023-07-10 16:31:05.659 ServerApp] {
"Host": "127.0.0.1:8848",

The address is actually available and clicking the extension does start the web server process but jupyter does not seem to like it.

and the console shows the following

Any leads or ideas to troubleshoot this issue would be much appreciated.

[bijucyborg]

the jupyterlab process is running inside a docker container, so I assume conf1 is looking for my localhost and not the containers local post.

[trungleduc]

Hi, for the first configuration, I think it is related to your docker setup, I don't have any issue with a local JupyterLab application.

For the second one, since jupyter_app_launcher is designed to work with jupyter-server-proxy, you can not assign the port of your web app but the extension will handle this. So you have the $PORT variable to config your web app with the port provided by jupyter_app_launcher . Your configuration will look like this:

title: app
description:
source: http://127.0.0.1:$PORT/
cwd: ../../../../h2o-llmstudio/
type: local-server
args:
 - make
 - wave
 - your-arg-to-config-port=$PORT
catalog: Another catalog

[bijucyborg]

Thanks a ton for such useful and quick response.

I need to figure out how I could launch the wave app with the listener as an argument. Its easier to launch it via the makefile and give the arguments as environment variables.