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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

Added

  • Xander.Query support for retrying connection to node when it is not available.
  • Xander.Transport module to abstract transport layer details for connecting to Cardano nodes, providing a unified interface for both Unix socket connections (via :gen_tcp) and SSL connections (via :ssl).

Changed

  • Refactored Xander.Query to use the new Xander.Transport module, eliminating the need for mini-protocol implementations to handle transport-specific logic.

  • Refactored Xander.Transaction to use the new Xander.Transport module.

  • Refactored Xander.ChainSync to use the new Xander.Transport module.

Fixed

  • Fix reading multiplexer messages on Xander.Util.plex/1. This fix properly accounts for the Mode bit in the multiplexer which fixes the reading of protocol ID.

  • Fix multiplexer header for outgoing messages. Properly setting the Mode as 1 bit and the mini protocol ID as 15 bits.

v0.3.0 (2025-08-14)

Added

  • Initial support for ChainSync mini-protocol.
  • Added Xander.ChainSync behaviour with support for handle_block and handle_rollback callback functions.
  • Support for syncing from either the Conway era boundary, a specific slot and block hash, or the current known tip of the chain.
  • Decoding partial block information. Only block number and block body size are passed to the handle_block client, and slot_number and block_hash are passed to the handle_rollback callback.

v0.2.0 (2025-05-08)

Added

  • Support for TxSubmission mini-protocol.
  • Integration tests on CI using Yaci DevKit.

v0.1.1 (2025-02-19)

Fixed

  • Issue where the ledger state tracked by the Query OTP process wouldn't be updated after establishing a connection. The result was that queries would always return the same value.

v0.1.0 (2024-02-17)

Added

  • Establish connection to Cardano node via Unix socket file or Demeter.run URL
  • Support for Ledger State Queries:
    • :get_current_era
    • :get_current_block_height
    • :get_epoch_number
    • :get_current_tip