'invalid frame header' error

JupyterHub
1

‘invalid frame header’ error

I use iframe to embed a jupyterhub and use jupyterlab as the default editor. But I can’t forward my command to terminal through websocket request. Has anyone ever encountered such a problem?

The URL request in question is: 'websocket : /user/xx/terminals/websocket/1?token=xxx ’

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About configuration:

Jupyterhub is installed with helm. Some configuration files are as follows:

values.yaml


configuration about hub:
extraConfig: 
    hub: |
      c.JupyterHub.tornado_settings = { 'headers': { 'Content-Security-Policy': "frame-ancestors * self  http://127.0.0.1:3000 http://localhost:3000"}}
    spawner: |
      c.Spawner.args = ["--NotebookApp.tornado_settings={'headers':{'Content-Security-Policy': 'frame-ancestors * slef http://localhost:3000 http://127.0.0.1:3000'}}"]
    jupyterlab: |
      c.Spawner.cmd = ['jupyter-labhub']

The following is my request forwarding process. I don’t think there is a problem in nginx or FRP forwarding process, because it can be used normally when it is not in iframe

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The front end uses’ HTTP proxy middleware 'for forwarding

If someone has encountered similar problems, please don’t hesitate to let me know，Thanks♪(･ω･)ﾉ

2

Has anyone ever encountered such a problem?