to run this:
pip3 install -r requirements.txt- If you want to sniff locally ( in your PC ), you can directly run:
python http_sniffer.py --show-raw
If you want to sniff http packets in the network, you gonna need to be man-in-the-middle using ARP spoofing, then you run this script.
You can find arp spoofer and how to use it in here