Omar SobhandClaude Opus 4.8
4de2f31b50
Terminal keystrokes were ~400ms because every byte relayed browser→Cloudflare→
gw-04 (Europe)→tailscale→node, even when the node is on the user's own LAN. Add a
direct browser↔node WebRTC DataChannel so co-located terminals run at LAN speed;
the gateway is reduced to signaling; the WebSocket relay stays as the automatic
fallback (graceful degradation — never worse than before).
Daemon (clawmates-node v0.4.0, new src/rtc.rs):
- Add the `webrtc` crate (reuses the ring crypto provider we already install — no
conflict). Browser is the offerer; we answer, trickle ICE back over the control
channel, and on DataChannel open spawn a host PTY (tmux) bridged DIRECTLY to the
channel. Refactor open_pty → spawn_terminal_pty shared by both transports.
iceServers: STUN + auto host/tailnet candidates (direct, no relay, for LAN/tailnet).
Server (cm-api):
- NodeConn.signal_sinks; Uplink WebRtcAnswer/WebRtcIce/WebRtcFailed routed to the
browser; NodeHub webrtc_offer/ice/close + open_session/open_pty (open_terminal
split so the PTY opens only once the transport is chosen). bridge_terminal relays
signaling over the existing ticket-authed WS and opens the relay PTY on
{type:"fallback"}.
Browser (NodeTerminalApp):
- RTCPeerConnection + reliable/ordered DataChannel; offer/answer/ICE over the WS;
2.5s race → use the DataChannel if it opens, else fall back to the WS relay.
Reconnect wraps both. A direct⚡/relayed indicator shows the live transport.
Deployed; both nodes (morpheus, tank) updated to v0.4.0 and steady online. Direct-
path proof is a browser action (the ⚡ indicator + latency); confirmable from the
daemon's [rtc] logs.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>