This release is a pre-release and may not be stable for production use.
PyPCAPKit -- Comprehensive Network Packet Analysis Library
For technical and maintenance information, see the Official Documentation.
PyPCAPKit is an open-source Python library for parsing, constructing and analysing network packets and PCAP files, with DictDumper as its formatted output dumper.
Unlike popular PCAP extractors such as Scapy,
DPKT and PyShark,
pcapkit reports more detail about each packet through a more Pythonic interface.
Where that depth is not needed, the same interface also drives third-party extraction
engines.
The whole project declares Python 3.6 or later. CI supports 3.11 to 3.15, and still tests the end-of-life 3.7 to 3.10 without letting a failure block anything; 3.7 cannot import the package yet.
Installation
pip install pypcapkit
Or from a clone, for the latest version and for development:
git clone https://github.com/JarryShaw/PyPCAPKit.git
cd PyPCAPKit
pip install -e .
The extraction engines and plug-ins are optional extras:
pip install pypcapkit[DPKT] # or Scapy, PyShark, PyPCAPFile, PyPCAP, PCAP_CT
pip install pypcapkit[crypto] # ESP payload decryption
pip install pypcapkit[cli] # command line interface
pip install pypcapkit[all] # core addons only: cli + crypto + NGAP (pycrate)
Engines are on demand; all bundles only the core addons the library needs for
full functionality. Some engines also need something beyond pip install -- a
tshark binary, a C compiler, libpcap headers, or an older interpreter -- and
pypcap/pcap-ct must never be installed together. The
installation guide gives each
constraint and its reason. pcapkit enforces them in code: asking for an engine
that cannot run in the current environment warns with the cause and falls back to
its own parser.
Usage
>>> import pcapkit
>>> extraction = pcapkit.extract('in.pcap', nofile=True)
>>> len(extraction.frame)
6
>>> frame = extraction.frame[0]
>>> str(frame.protochain)
'Ethernet:IPv6:IPv6_ICMP'
>>> frame.info.time
datetime.datetime(2017, 11, 19, 15, 49, 5, 471719, tzinfo=datetime.timezone.utc)
>>> frame.payload.payload.src
IPv6Address('fe80::a6:87f9:2793:16ee')
The output is from the committed examples/captures/in.pcap, so it is reproducible
from a clone.
Reassembly, TCP flow tracing and the engine are keyword arguments to the same call:
>>> scapy = pcapkit.extract('in.pcap', nofile=True, engine='scapy')
>>> reasm = pcapkit.extract('in.pcap', nofile=True, reassembly=True, ipv6=True)
>>> flows = pcapkit.extract('in.pcap', nofile=True, trace=True, tcp=True)
>>> len(flows.trace.tcp)
2
More examples, including the command line interface, are in How to ....
Documentation
The official documentation is the reference. Pages worth knowing by name:
| Page | What is in it |
|---|---|
| API reference | Every module, protocol and constant |
| Module structure | What each subpackage is for |
| Engine comparison | Which engines exist, which Python versions they run on, and measured speed per packet |
| Engine support | What each engine does not support, and how the gap is surfaced |
| Installation | Extras, engine prerequisites and the local development setup |
| Testing | Running the suite, and the sample captures it needs |
| How to ... | Worked examples, library and CLI |
| Extensions | Registering your own protocols, engines and dumpers |
Release history is in CHANGELOG.md, and contribution guidelines are in CONTRIBUTING.md.
1 maintainer
Metadata
1 maintainer
Release files for pypcapkit 1.5.0b14
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| pypcapkit-1.5.0b14-cp310-none-any.whl | CPython 3.10 | none | any | Details |
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