Can't connect via websockets using https (self signed certs)

Thanks for sharing the configuration setup. According to the Nginx docs WebSocket proxying, you’ll need to set the following configuration for reverse proxying WebSocket connections:

        location / {
            ...
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection $connection_upgrade;
           ...
            proxy_pass http://dgraph;
        }

I tried setting those three things (proxy_http_version and the two proxy_set_header) with your example and it worked.

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