Browser was JSON.stringify-ing the inner payload before putting it
in the outer message envelope. Go side then saw a JSON string where
it expected a JSON object, and SignalPayload Unmarshal silently
failed — which is why answers never made it back through the
peer connection.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Old filter hid all source=web messages — meant multiple browsers
couldn't see each other's sends. Now each browser only filters out
its OWN peerID, so iphone↔mbp↔desktop all see each other's clipboard.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Server: unchanged shape, just added a "signal" message type to the
existing /api/send + /api/stream bus. Now carries both "clipboard"
(payload) and "signal" (offer/answer/ICE) over the same envelope.
Client: -rtc flag turns the Go listener into a Pion peer. Posts an SDP
offer at startup, accepts the browser's answer through the signaling
bus, exchanges ICE, then receives clipboard text over a DataChannel
named "tether". On message: writes to OS clipboard same as SSE path.
Web UI: acts as the answerer. Listens for "signal" SSE events, replies
to offers, exchanges ICE. When DataChannel opens, the send button uses
RTCDataChannel.send() instead of POST /api/send — data no longer
traverses the server after pairing. Pill in the header flips
sse → negotiating → rtc to make this visible.
Toolchain: bumped go.mod to go 1.26, switched to pion/webrtc v4 and
prometheus/client_golang v1.23.x.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
- Add Prometheus counters/gauges/histograms: messages_total{source},
message_bytes_total, active_subscribers, publish_duration_seconds.
- Add /api/signal/<room> mailbox endpoint (POST adds, GET drains).
Currently scaffolding for WebRTC SDP/ICE exchange — peers do not
use it yet; client-side WebRTC negotiation is roadmap.
client: structured default label
Use "<GOOS>-sse-<role>" (e.g., windows-sse-listener) instead of the
old "linux-client" fallback. -label still overrides.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Single Go module with two binaries (server, client) and an embedded
phone UI. MVP transport is HTTP POST → SSE fanout; the roadmap calls
for upgrading to WebRTC P2P with Sign in with Apple for identity, mDNS
for discovery, and OS clipboard hooks.
- server/: Go HTTP server, embedded index.html, broadcast bus with
short replay history, SSE stream endpoint, single-binary deploy.
- client/: subscribes to SSE feed and prints messages; -send for
one-shot publish from CLI. No OS clipboard touched yet (v0.5).
- web/index.html: dark phone-first UI, paste-clipboard button (uses
navigator.clipboard.readText), live feed of incoming messages via
EventSource.
This commit is intentionally tiny — it proves the end-to-end shape so
the WebRTC/SiwA/mDNS pieces can be added incrementally without
restructuring.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
