Getting Bad request 400 with reverse proxy NGINX with web socket channels

Questions & Help Questions
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2

Just found out that the exact missing setting was to force http 1.1 (i’m just testing without ssl for now): “proxy_http_version 1.1”.

as in:

location / {
          proxy_http_version 1.1; # <------------------------------
          proxy_pass http://localhost:some-port-here;
          proxy_set_header Upgrade $http_upgrade;
          proxy_set_header Connection "Upgrade";
          proxy_set_header        X-Forwarded-For   $remote_addr;
          proxy_set_header        X-Real-IP         $remote_addr;
          proxy_set_header        Host              $host;
          proxy_set_header Access-Control-Allow-Origin *;
          proxy_read_timeout 900;
      }