Websockets not working

[Zoey2936]

Hello, it seems that websocket connections are always blocked, see: ZoeyVid/NPMplus#1606
This is the config used:

access_by_lua_block {
    local opts = {
        redirect_uri = "/npmplus-oidc/redirect_uri",
        discovery = "https://<oidc-provider>/.well-known/openid-configuration", -- edit
        client_id = "", -- edit
        client_secret = "", -- edit
    }
    local session_opts = {
        cookie_prefix = "LRNP-OIDC-",
        cookie_http_only = true,
        cookie_secure = true,
        cookie_same_site = "Strict",
        remember = true
    }
    local res, err = require("resty.openidc").authenticate(opts, nil, nil, session_opts)
    if err then
        ngx.status = 500
        ngx.say(err)
        ngx.exit(ngx.HTTP_INTERNAL_SERVER_ERROR)
    end
    ngx.req.set_header("X-USER", res.id_token.sub)
}

Adding the following fixes it, but makes all websocket request unprotected:

    if ngx.var.http_upgrade and string.lower(ngx.var.http_upgrade) == "websocket" then
        return
    end

Since I can't test it, because I have no openidc service myself, @shedowe19 made the tests for me (see the linked Issue), where we found this bug and the possible workaround