Cloudflare proxy on FastDL [Bug]

[sh1rm4n]

Details

So, when im using x86-64 Chromium beta branch (x32 or x64 game arch), with sv_downloadurl where domain is proxied through Cloudflare, all files are downloading, everything is alright

But when using no beta branch, there seems to be a problem with Cloudflare where FastDL server is proxied thru it.
Files aren't downloading through it.

Steps to reproduce

1. Set sv_downloadurl convar to Cloudflare proxied FastDL server (Caddy/Nginx/Apache) on serverside
2. Start Garry's Mod with no beta branch (again, x86-64 Chromium branch works perfectly, with no problems)
3. Join server with Cloudflare proxied FastDL
4. Check console for:
   HTTP ERROR 1 (Zero Length File) downloading https://[REDACTED]/maps/some_file.bsp
   or
   HTTP ERROR 2 (Connection closed) downloading https://[REDACTED]/maps/some_file.bsp

Version of the game

Protocol version 24
Network version 2025.03.26 (garrysmod)
Exe build: 15:41:51 Dec 10 2025 (9860) (4000)
GMod version 2025.12.10, branch: unknown, multicore: 0
Windows 32bit

Beta

None/Public/Default/Main

[sh1rm4n]

maybe just need to update curl library??