feat(file-transfer): P2P file transfer via WebRTC + Durable Object signaling - #63
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Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
New Files tool (/tools/file-transfer): send a file directly to another device, peer-to-peer. File bytes travel over a WebRTC data channel and never touch our server; a tiny Durable Object (SignalRoom, free SQLite tier) on the existing Worker relays only the ~2KB SDP/ICE handshake at /api/signal/<room>. - Mandatory ack-before-connect gate. - STUN-only (public STUN); clear failure message on restrictive networks. - Shareable room link; sender picks a file, receiver downloads. Backpressure via bufferedAmountLowThreshold. Robust to either peer connecting first (WebRTC initiator decoupled from app send/receive role). Pure tested logic: signal.lib (room ids, link, message parsing), file-transfer .lib (chunking, meta, progress). Browser transport (signal-client, peer), useFileTransfer hook, thin island. Worker+DO bundle validated via wrangler dry-run. Spec+plan under docs/superpowers/. Shared infra reused by the upcoming video call (item 5). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Deploying with
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| Status | Name | Latest Commit | Updated (UTC) |
|---|---|---|---|
| ✅ Deployment successful! View logs |
goodwebtools | 02b8e1b | Aug 01 2026, 02:26 AM |
This was referenced Aug 1, 2026
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New P2P File Transfer tool (
/tools/file-transfer, Files) — send a file directly to another device, peer-to-peer.First server-side component: a tiny Cloudflare Durable Object (
SignalRoom, free SQLite tier) added to the existing Worker relays only the ~2KB SDP/ICE handshake at/api/signal/<room>. File bytes travel peer-to-peer over a WebRTC data channel and never touch our server.bufferedAmountLowThreshold. Robust to either peer connecting first.Pure tested logic:
signal.lib(room ids/link/parse),file-transfer.lib(chunking/meta/progress). Worker+DO bundle validated viawrangler deploy --dry-run.Spec+plan under
docs/superpowers/. Shared signaling infra will be reused by the video call (item 5).529 tests pass · lint 0 errors · build green (
/tools/file-transferbuilt).new_sqlite_classes). After the staging deploy I'll run a two-WebSocket signaling smoke test against staging before promoting to production.🤖 Generated with Claude Code