From a quick hello to a group catch-up, UIMessage calls are designed to feel immediate. We own the entire real-time path — signaling, the media server, and relays — so we can tune for clarity and latency instead of renting someone else's pipes.
Owned, not rented
The iPhone client applies AES-GCM application encryption to encoded audio, video, and screen-share frames before the Go SFU or TURN relay receives them, and fails closed if the frame cryptor cannot attach. The relays see routing metadata. Direct-call setup still lacks a verified, forward-secret ratcheted handshake.
