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API Notes

EnhancedSecureWebRTCManager

Verification

confirmVerification(userCode) validates a manually entered SAS code.
Verification succeeds only after both local and remote confirmations are present.
Protocol version 4.1 is enforced during offer/answer processing.

Privacy mode

relay-only configuration sets WebRTC iceTransportPolicy to "relay".
TURN availability is checked before claiming IP protection.

File transfer callbacks

setFileTransferCallbacks(onProgress, onReceived, onError, onIncomingRequest) updates manager fields and any live EnhancedSecureFileTransfer instance.
Passing null values detaches callbacks from the active transfer system.

EnhancedSecureFileTransfer

Incoming transfers

metadata is validated before prompting
acceptance is explicit
receive buffers are allocated only after consent
file type acceptance is allowlist-based

Cleanup

pending sender consent promises are rejected on cleanup
consent timeouts are cleared immediately
retained received buffers are bounded
evicted download handles fail with a user-facing availability message

SecurePersistentKeyStorage

metadata is encrypted before storage
legacy plaintext records migrate lazily
corrupted encrypted metadata is ignored safely