XPortal separates “how we meet” from “where the file lives,” and deliberately keeps file bytes out of Bestrao application storage.
Traditional file links point at a file sitting on a server. XPortal uses a temporary numeric code only for peer discovery; file bytes never upload to Bestrao — they stream over a WebRTC DataChannel.
After that handshake, peers exchange control messages (who added what, download requests, progress, cancel) and binary chunk frames over the DataChannel. When network conditions allow, traffic can flow on a direct peer path; WebRTC’s ICE machinery still applies when NAT and firewalls force relays for connectivity alone — not because Bestrao is storing your movie.
DTLS protects the WebRTC transport. That is the same family of protection used by modern real-time browser communication. XPortal does not invent a private crypto protocol on top of a proprietary backend; it builds on open browser standards you can inspect and reason about.
Because sessions are temporary, closing a tab ends the room’s usefulness. There is no archive of past transfers in a cloud dashboard, no “shared with me forever” folder, and no product incentive to keep your payload for training or ads.