Channels/Daphne offloading SSL Certs to AWS ELB fails to establish socket

[Filbert]

Using AWS ELB, I was able to serve HTTP (via uwsgi) and websockets through Nginx with Nginx handling the SSL certs. 

Once I tried to offloading SSL certs to the ELB so I could capture X-Forwarded-For, websockets fail to route/upgrade to Daphne and I get "Not Found: /ws/" in uwsgi's logs.

Here is the relevant (working) piece of Nginx .conf file using TCP/443 pass thru from the ELB:

location /ws {

            proxy_pass http://unix:/opt/toogo/run/r117.0.4.3720.ws;   #Obviously daphne is listening here

            proxy_set_header Upgrade $http_upgrade;

            proxy_set_header Connection "upgrade";

            proxy_http_version 1.1;

            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

            proxy_set_header Host $host;

    }

What change is required if I offload the SSL certs to the ELB and introduce X-Forwarded-for?