cfdp/CHANGELOG.md

Change Log

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

• Bumped spacepackets to v0.18

Fixed

• Destination handler's TransactionParams::reset now resets all fields instead of just two. The incomplete reset left stale acknowledged-mode state behind, so a new transaction's Metadata PDU was mistaken for a duplicate of an already-processed one and silently dropped, breaking every transfer after the first one on a given destination handler instance.
• Source handler's TransactionParams::reset had the same issue. A second transaction on the same source handler instance could compute its EOF checksum over stale state left behind by the first one.
• Metadata-only transactions (e.g. a Proxy Put Request per CCSDS 727.0-B-5 6.1) now correctly send and expect an EOF (No error) PDU, as required by 4.6.1.1.9 case (C). The source handler no longer tries to checksum a source file that does not exist for this case, and the destination handler no longer tries to create or truncate a destination file that was never named.
• Destination handler no longer panics when a metadata PDU's Message To User TLVs overflow its internal buffer. It now returns DestError::MsgsToUserBufferTooSmall instead, and the buffer was bumped from 1024 to 2048 bytes.
• Destination handler's lost_segment_handling now clears a gap that a retransmission exactly refills. It used to compare the end of the received segment against the start of the most recently received window instead of its end, so such a retransmission matched neither branch and the gap stayed in the tracker, causing the destination to re-request data it had already written on every NAK round until it hit its NAK limit.
• Destination handler now answers a retransmitted EOF PDU instead of silently reprocessing it. Per CFDP 4.7.2 every EOF PDU must be acknowledged, and a retransmission means our previous ACK was lost. It used to be handled like a brand new EOF regardless of transaction state, which re-ran completion, re-sent a fresh Finished PDU, and restarted its positive ACK procedure on every retransmission the sender made.

v0.3.0 2025-09-25

• Bumped spacepackets to v0.16
• Bumped defmt to v1

Added

• Acknowledged mode support for both source and destination handler.
• FaultInfo structure which is passed to user fault callbacks.

v0.2.0 2024-11-26

• Bumped thiserror to v2
• Bumped spacepackets to v0.13
• The source and destination handlers can now be used without the std feature and only require the alloc feature.

[v0.1.0] 2024-09-11

Initial release