ntp_dart 1.3.0

A lightweight, cross-platform NTP client for Dart & Flutter. Fetches highly accurate time via native UDP and Web HTTP fallbacks with microsecond precision and secure caching.

Changelog

1.3.0

• Refactored Cache: Transitioned AccurateTime cache to use time offset calculation (cachedOffset) rather than absolute datetime tracking, boosting reliability and simplifying local drift corrections.
• Microsecond Precision: Enhanced UDP packet timestamp parsing and math to support full microsecond accuracy (matching Dart's DateTime resolution).
• Socket and Stream Safety: Rewrote UDP networking in ntp_io.dart with robust try-finally blocks to guarantee socket closure and prevent resource leakages on bad networks or cancellation.
• RFC 5905 Security Compliance: Implemented transmit timestamp writing and randomized low-order bits on client request packets to resist off-path spoofing and replay attacks.
• NtpServer Enum: Introduced NtpServer enum offering curated, ultra-reliable servers (google, cloudflare, apple, microsoft, nist, pool).
• Flexible Fallbacks: Added allowFallback and forceRefresh to AccurateTime.now().
• Test Suite: Introduced a comprehensive unit testing framework in test/ntp_dart_test.dart.

1.2.1

• Added isUtc parameter (default false) to AccurateTime.now(), AccurateTime.nowSync(), and AccurateTime.nowToIsoString().
• Fixed caching logic in AccurateTime to always store UTC and convert to local only when requested.

1.2.0

• Added apiUrl and parseResponse parameters to NtpBase to allow custom API endpoints and response parsing on Web.
• Added isUtc parameter (default false) to control whether to return UTC or Local time.
• Implemented latency compensation for both Web and IO.
• Improved NTP timestamp parsing in IO to support millisecond precision.
• Added timeout support for Web NTP requests.
• Updated dependencies: http to ^1.6.0 and intl to ^0.20.2.

1.1.1

• Added AccurateTime.nowSync() method to provide a synchronous time value, useful for UI rendering while the first sync is in progress.
• Change logic for conditional import based on platform. No breaking API changes.
• Updated http dependency (previously 1.4.0) to 1.5.0.
• Refreshed README and examples to reflect the new platform setup and usage notes.

1.0.2

• Update documentation

1.0.1

• Enable flutter web wasm compatibility

1.0.0

• Publish package