Websocket proxy issue with apache

[Evan Clark]

I have attempted several configs to get websockets to properly proxy with apache, however I am still running into this error.

failed: Error during WebSocket handshake: Unexpected response code: 400

Below is the current applicable part of the apache config.

RewriteRule ^/jupyter$ /jupyter/ [R]

RewriteRule ^/jupyter(.*) http://localhost:8000/jupyter$1 [P]

RewriteCond %{HTTP:Upgrade} =websocket [NC]

RewriteRule ^/jupyter/(services/[^/]*)|(user/[^/]*)/(api/kernels/[^/]+/channels|terminals/websocket)/? wss://localhost:8000/$1 [P,L]

[Carl Waldbieser]

I've got a Vagrantfile and supporting files set up for testing the jhub_remote_authenticator.  This setup uses apache2 httpd and mod_wsproxy.

  https://github.com/cwaldbieser/vagrant_jhub_remote_user_authenticator_test_env

The provision.sh file describes the setup.  The httpd conf files are in the `etc` folder and sub-folders.  I ran into lots of issues with not having the necessary modules loaded before I finally got it working.

Thanks,

Carl Waldbieser