Redirects cause error with BBB setup

[hmt]

I'm using https://github.com/hmt/tinyscale to load balance BBB servers. This works well with nextcloud and moodle but Greenlight seems to get confused by the redirect from the tinyscale server to the chosen BBB server (https://github.com/hmt/tinyscale/blob/master/app.ts#L61).
The logs give me this:

2021-04-24 08:44:02 +0000 - INFO: [36c34f8d-da86-4005-8bd0-9cdf196db37d] [meineIP] method=GET path=/b/ format=html controller=MainController action=index status=302 duration=87.79 view=0.00 db=18.26 location=https://bbb1.de/b/t-l-lno-g8t-tyc host=greenlight 
2021-04-24 08:44:02 +0000 - ERROR: [14ee8947-04a4-4bb7-bcef-c035f209a220] [meineIP] BigBlueButtonException: Impossible to convert XML to hash. Error: File does not exist: Found. Redirecting to https://bbb1.de/bigbluebutton/api/isMeetingRunning?meetingID=3op5p35ckrelpsyymstd0xzzrtrah7u7kzrxahap&checksum=1234. 
2021-04-24 08:44:02 +0000 - INFO: [14ee8947-04a4-4bb7-bcef-c035f209a220] [meineIP] method=GET path=/b/t-l-lno-g8t-tyc format=html controller=RoomsController action=show status=200 duration=502.78 view=420.99 db=7.19 host=greenlight 
2021-04-24 08:44:21 +0000 - ERROR: [3e260a70-a713-475f-a0c1-faa454765341] [meineIP] BigBlueButtonException: Impossible to convert XML to hash. Error: File does not exist: Found. Redirecting to https://bbb2.de/bigbluebutton/api/isMeetingRunning?meetingID=3op5p35ckrelpsyymstd0xzzrtrah7u7kzrxahap&checksum=1234. 
2021-04-24 08:44:21 +0000 - INFO: [3e260a70-a713-475f-a0c1-faa454765341] [meineIP] method=GET path=/b/t-l-lno-g8t-tyc format=html controller=RoomsController action=show status=200 duration=148.17 view=61.70 db=2.05 host=greenlight

Interesting is this part here:

BigBlueButtonException: Impossible to convert XML to hash. Error: File does not exist: Found. Redirecting to ...

The found probably refers to the server status code 302 which is returned when redirecting the call.

Is there is simple remedy to this? Do I have to instruct tinyscale to respond differently? I'd be happy if I could just let BBB handle all responses.

EDIT I seem to have found the origin of this issue here: mconf/bigbluebutton-api-ruby#23

[farhatahmad]

I'm not aware of a simple solution. The way Scalelite works is that it makes the call to the BigBlueButton server and responds to Greenlight with the response from the server (instead of redirecting and getting the response directly from the server).

As you noted above, the issue is with the BigBlueButton gem and will need to be fixed there

[hmt]

Thank you, the gem seems quite dead by now. I'm looking into proxying to circumvent the issue on my side. Thanks for replying.

[hmt]

In case anybody wants to see the solution to how this can be fixed, I just fetch()ed the XML and forwarded to Greenlight. Works well and with that solution another BBB client is support in tinyscale. (https://deno.land/x/[email protected]/app.ts#L75-L78)