Serverless website but need to use digitalocean for websockets - works on localhost not deployed

Vercel don’t suport websocket client because works as serverless functions returning a bunch of code in each received request, and don’t keep connections alive (necessary for websocket works).

https://vercel.com/guides/do-vercel-serverless-functions-support-websocket-connections

Hi there,

Indeed this sounds like a mixed content problem.

Are you running your web sockets service on a Droplet? If so, as you mentioned, it is best to use a subdomain like server.example.com and follow these steps:

• Add an A record for your server.example.com subdomain to point to your DigitalOcean server IP address.
• After that use a free SSL certificate using Let’s Encrypt:

https://www.digitalocean.com/community/tutorials/how-to-secure-nginx-with-let-s-encrypt-on-ubuntu-20-04

• Then you could add an Nginx reverse proxy to the SSL Nginx server block generated by certbot as described in the tutorial above:

...
location / {
    proxy_pass http://localhost:3001;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header Host $host;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

    # WebSocket support
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
}
...

Let me know how it goes!

Best,

Bobby