The cfdp-py library offers some high-level CCSDS File Delivery Protocol (CFDP) components to perform file transfers according to the CCSDS Blue Book 727.0-B-5. The underlying base packet library used to generate the packets to be sent is the spacepackets library.

This library supports the following features:

• Unacknowledged (class 1) file transfers for both the sending and destination side
• Acknowledged (class 2) file transfers for both the sending and destination side

The following features have not been implemented yet. PRs or notifications for demand are welcome!

• Suspending transfers
• Inactivity handling
• Start and end of transmission and reception opportunity handling
• Keep Alive and Prompt PDU handling

You can install this package from PyPI

For example, using uv

Setting up virtual environment:

uv venv

Regular install:

uv pip install -e .

Interactive install with testing support:

uv pip install -e ".[test]"

You can find all examples inside the documentation and the examples directory of this repository.

If you want to run the tests, it is recommended to install pytest and coverage (optional) first. You also have to install the package with the optional test feature:

uv pip install -e ".[test]"

Running tests regularly:

pytest

Running tests with coverage:

coverage run -m pytest

The documentation is built with Sphinx

Install the required dependencies first:

pip install -r docs/requirements.txt

Then the documentation can be built with

cd docs
make html

You can run the doctests with

make doctest

Linting:

ruff check

Formatting:

ruff format