NICE DCV behind Nginx reverse proxy, "Failed to communicate with server."


I have Nginx running on an Amazon Linux EC2 instance. It is listening for connections to and then using proxy_pass with a wildcard cert to serve the DCV client from an internal IP address. The page displays properly with no SSL errors. However, instead of the login prompt, I get a red message that says "Failed to communicate with server.".

I attempted to use the allowed-http-host-regex with the value ^(www\.)?dcv01\.example\.com$, but then I get a 403. I also tried allowed-ws-origin-regex, but it does nothing different (still get Failed to communicate...)

What do I need to do to get DCV working behind a reverse proxy?

asked a year ago622 views
1 Answer
Accepted Answer

I realized this was due to websockets not being proxied. Adding the following to my server block fixed the issue.

proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
answered a year ago
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reviewed 2 months ago

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