Web Resource with websockets

[DM]

Hi Pulse Community,

we got an internal website we want to make available to some customers via WebSSL.

If I connect to my sign-in page and login I can see the website put parts of the website are still "loading".

We've tried to debug the websession as good as we can. If I connect to the website without Pulse I get a websocket which is about 300 bytes. If I do the same via Pulse I get a websocket but it's 0 bytes.

Are there special rewriting rules I need to add to use websockets via the Pulse gateway?

Thank you for your help.

[[email protected]]

From the debug output, do you see the websocket calls are being concatenated with the VPN server hostname separated a Danainfo keyword or still seeing the actual URL of the internal web application? For eg. https://<VPN hostname>/danainfo=<websocket calls>

Is it using WS or WSS schema for the websocket data? What is the HTTP response code you see for the 0 bytes response?

Does the web application loads after few minutes or is it stuck at 'loading' forever? Do you see any XHR calls being flown with URL format like https://<VPN hostname>/danainfo,/<webapp URL>,CT=xml after several 0 bytes of data?

What is the VPN server version?

[DM]

Hi Ray,

as far as I can see the websocket calls and address which is not concatenated with the VPN server hostname.

It is not using WS or WSS and it seems I don't even get an HTTP response code.

The web application itself is stuck with loading forever and the XHR calls I can see in the debugger use the URL format you mentioned but with CT=sxml.

Kind regards,

DM

[DM]

The VPN server is running version 9.0R5.

[[email protected]]

Can you try the setup using Passthrough proxy configuration and certainly, it might fix these issues. XML messages might be the fallback mechanism (XML HTTP Requests - XHR polling) used by your web application, in case if it's using NodeJs (can be disabled as well) or that might be normal XML data.

Reference: https://www-prev.pulsesecure.net/download/techpubs/current/434