creating a pcap file using python

Question

I'm trying to create a very simple PCAP file (1 UDP message).
Tried using dpkt (pcap.Writer), no luck, and the documentation is scarce.
Can anyone post a working example?
(or any other alternative - I'm not bound to dpkt)

Answer 1

You may use Scapy.

https://scapy.readthedocs.io/en/latest/installation.html

If using Python 3:

pip3 install scapy

Then in Python:

from scapy.all import wrpcap, Ether, IP, UDP
packet = Ether() / IP(dst="1.2.3.4") / UDP(dport=123)
wrpcap('foo.pcap', [packet])