bug: Proxy Auto Config ignored by app

[axet]

What happened?

Hello!

I have https://app.revolt.chat/ blocked by ISP. To overtake it I have socks5 proxy configured at system level (Gnome System Settings). It works. But when I change proxy to PAC (which only proxying blocked sites based by name not all connections) Revolt stops working.

Other apps like firefox, chrome works fine with PAC but Revolt does not see the server and showing white app whole time with circle running indefenetly.

Seems like Revolt does not support Proxy Auto Config (PAC) proxy.

0.0+git20211216.7f6f762-2
debian trixie.

[axet]

The idea here is to parse PAC files manually. Having very stricted format like hosts list and proxy to work with. And failing with comples JS. For example here is a alpaca proxy:

• https://github.com/samuong/alpaca

It parsing pac files manually and proxying all requests as intended.

Or using alpaca building library/binary to do the job.

Here is my pac file:

const PROXY = "SOCKS5 10.10.5.1:3128; SOCKS5 10.10.5.1:9050; DIRECT";
const HH = [ "youtube.com", "ytimg.com", "rutracker.org", "googlevideo.com",
  "rutracker.cc", "lemmy.world", "torproject.org", "ggpht.com",
  "navalny.com", "gemini.google.com", "telegram.org", "t.me", "revolt.chat" ];

function FindProxyForURL(url, host) {
  for (const h of HH) {
    if (dnsDomainIs(host, h))
      return PROXY;
  }
  return "DIRECT";
}

[axet]

If you do not know what I'm talking about here is a link:

• https://developer.mozilla.org/en-US/docs/Web/HTTP/Guides/Proxy_servers_and_tunneling/Proxy_Auto-Configuration_PAC_file