FlashPolicy proxy forwarding with Nginx
Hello. I ran shell script on port 8080 for my application. Then I added nginx config for SSL-support:

```
server {
    listen 443;
    server_name ratchet.local

    ssl on;
    ssl_certificate /home/crash/https/server.crt;
    ssl_certificate_key /home/crash/https/server.key;

    location / {
        proxy_pass http://localhost:8080;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_read_timeout 3600;
    }
}
```

On browser side I used url `wss://ratchet.local/pubsub`. It works fine.

Then I ran second shell script on port 8843 with FlashPolicy.
How can I do proxy forwarding from 843 to 8843 with Nginx?
