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Pure-Python HPACK header compression

Project description

This module contains a pure-Python HTTP/2 header encoding (HPACK) logic for use in Python programs that implement HTTP/2. It also contains a compatibility layer that automatically enables the use of nghttp2 if it’s available.


hpack welcomes contributions from anyone! Unlike many other projects we are happy to accept cosmetic contributions and small contributions, in addition to large feature requests and changes.

Before you contribute (either by opening an issue or filing a pull request), please read the contribution guidelines.


hpack is made available under the MIT License. For more details, see the LICENSE file in the repository.


hpack is maintained by Cory Benfield, with contributions from others. For more details about the contributors, please see CONTRIBUTORS.rst.

Release History

1.0.1 (2015-04-19)

  • Header fields that have names matching header table entries are now added to the header table. This improves compression efficiency at the cost of slightly more table operations. With thanks to Tatsuhiro Tsujikawa.

1.0.0 (2015-04-13)

  • Initial fork of the code from hyper.

Project details

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