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Python wrapper for the pcap library (ctypes/cffi-based pypcap).

Project description


Python wrapper for the pcap library.


Python pcap-ct package is a simplified object-oriented Python wrapper for libpcap C library - the current version, and the WinPcap port for Windows..

pcap-ct is a pure Python package, based on the low-level libcap package.
It is fully compliant implementation of the original PyPCAP 1.2.3 API (with some minor improvements and bug fixes) by implementing whole its functionality in a clean Python instead of Cython and C.

About original PyPCAP:

Borrowed from the original website:


This is a simplified object-oriented Python wrapper for libpcap - the current version, and the WinPcap port for Windows.

Example use:

>>> import pcap
>>> sniffer = pcap.pcap(name=None, promisc=True, immediate=True, timeout_ms=50)
>>> addr = lambda pkt, offset: '.'.join(str(ord(pkt[i])) for i in range(offset, offset + 4))
>>> for ts, pkt in sniffer:
...     print('%d\tSRC %-16s\tDST %-16s' % (ts, addr(pkt, sniffer.dloff + 12), addr(pkt, sniffer.dloff + 16)))

Windows notes

WinPcap has compatibility issues with Windows 10, therefore it’s recommended to use Npcap (Nmap’s packet sniffing library for Windows, based on the WinPcap/Libpcap libraries, but with improved speed, portability, security, and efficiency). Please enable WinPcap API-compatible mode during the library installation.


  • It is a fully independent package.
    All necessary things are installed during the normal installation process.
  • ATTENTION: currently works and tested only for Windows.



To install run:

python -m pip install --upgrade pcap-ct


Visit development page.

Installation from sources:

clone the sources:

git clone pcap-ct

and run:

python -m pip install ./pcap-ct

or on development mode:

python -m pip install --editable ./pcap-ct


  • Development is strictly based on tox. To install it run:

    python -m pip install --upgrade tox


Copyright (c) 2016-2019, Adam Karpierz

Licensed under the BSD license
Please refer to the accompanying LICENSE file.



1.2.3b1 (2019-11-14)

  • Update for PyPCAP 1.2.3.
  • Drop support for Python 2.
  • Drop support for Python 3.4.
  • Add support for Python 3.8.
  • Setup improvements and cleanup.

1.2.0b6 (2019-02-05)

  • Update required setuptools version.
  • Minor setup improvements.

1.2.0b5 (2018-11-08)

  • Update required setuptools version.
  • Minor setup and tests improvements.

1.2.0b4 (2018-02-26)

  • Improve and simplify setup and packaging.

1.2.0b3 (2018-02-01)

  • Update for PyPCAP 1.2.0.

1.2.0b2 (2017-10-10)

  • Minor changes.

1.2.0b1 (2017-10-05)

  • Next beta release.
  • Update for PyPCAP 1.2.0rc.

1.1.6b4 (2017-10-04)

  • Fourth beta release.

1.1.6b3 (2017-08-28)

  • Third beta release.

1.1.6b2 (2017-08-28)

  • Second beta release.

1.1.6b1 (2017-08-27)

  • First beta release.

1.1.6a15 (2017-08-25)

  • Next alpha release.

1.1.6a0 (2017-06-10)

  • First alpha release.

0.0.1 (2016-09-23)

  • Initial release.

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