code-server: [Bug]: intermittent reconnection

I’ve been doing some testing and it appears that what’s causing this is a change in behavior to the websocket keep alive between 4.4.0 and 4.5.1. If I add proxy_read_timeout 86400; to my Nginx configuration the issue goes away. By default Nginx has a 60 second read timeout which worked just fine on 4.4.0. Below is my working configuration but we need to figure out why that’s no longer enough. I just don’t know enough about how VSCode works to try and track this down.

server {
    listen 443 ssl;
    server_name dev-1.example.com;
    ssl_certificate /etc/pki/tls/certs/dev-1.cer;
    ssl_certificate_key /etc/pki/tls/private/dev-1.key;
    ssl_protocols TLSv1.2 TLSv1.3;

    location / {
      proxy_pass http://localhost:8080/;
      proxy_set_header Host $host;
      proxy_set_header Upgrade $http_upgrade;
      proxy_set_header Connection upgrade;
      proxy_read_timeout 86400;
      proxy_set_header Accept-Encoding gzip;
    }
}

There might be shorter values that work, like I said I’m not sure what causing the behavior change since other reverse proxies like Caddy don’t seem to do this.

I can confirm that setting proxy_read_timeout 86400; solves the issue