fix(file-transfer): size chunks under the 64KB SCTP message limit
Each 64KB chunk became a ~87KB AES-GCM+Base64 file_chunk message,
exceeding WebRTC's 64KB SCTP message-size floor. The consent handshake
(small messages) succeeded, but no chunk was ever delivered on Safari
and cross-browser connections whose SDP omits a=max-message-size, so
files never transferred. Send chunk size is now 16KB (~22KB on the
wire); inbound chunks up to 64KB stay accepted for backward compat.
fix(file-transfer): make MIME advisory, drive validation by extension
The client-supplied MIME type is easily spoofed and varies across
browsers/OSes, yet was a hard gate: files with an empty MIME or a
cross-OS variant (application/x-zip-compressed, image/jpg) were wrongly
rejected. Extension allow-list plus BLOCKED_EXTENSIONS is now the
boundary; a blatantly foreign MIME on a safe extension is still rejected
and per-type size limits still apply.
- add header gear + connection-screen entry points to Advanced network settings
- render the ICE settings modal at the app root (reachable from any screen via event)
- remove the standalone relay-only toggle/description from the start screen
(relay-only now lives in the advanced settings panel)
- fix crash from referencing main-component state inside EnhancedConnectionSetup
- bump version to 4.8.10 across header, manifest, README, init message, disclaimer
- document the feature in CHANGELOG and README
Complete the mandatory receiver-consent gate that was wired in the
backend but never connected to the UI callback chain:
- Add the missing onIncomingFileRequest (4th) callback to
setFileTransferCallbacks in app.jsx — its absence caused
handleFileTransferStart to auto-reject every incoming file.
- Remove independent callback registration from FileTransferComponent;
the component was overwriting app-level callbacks on mount and
nulling all four on unmount, silently breaking progress/received/
error handlers whenever the panel was hidden.
- Lift pendingIncomingFiles state to the root component so consent
prompts are shown regardless of panel visibility; auto-open the
panel on incoming request.
- Add getReceivedFileObjectURL / revokeReceivedFileObjectURL on
EnhancedSecureWebRTCManager for download buttons in the panel.
- Update file-transfer-ui-cleanup regression test to match the new
single-owner callback architecture.
- All 14 tests pass; clean production build.
lockbitchat