How to Proxy WebSocket (WS) to Secure WebSocket (WSS) with Nginx

Note: Please apply for your domain’s SSL certificate first.

Below is an Nginx configuration example, using backend port 9501:

server
{
listen 443 ssl ;
server_name send.123.com;
index index.html index.php;
ssl_certificate /www/ssl/send.123.crt ;
ssl_certificate_key /www/ssl/123.key ;
location /
  {
        proxy_pass http://127.0.0.1:9501;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
  }
}


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