Send udp/tcp/icmp pings in Scapy to top 50 websites and watch those packets appear in a Wireshark live capture

scapy_example.py

#!/usr/bin/env python3
# Run `tail -f -n +1 /tmp/scapy.pcap | wireshark -k -i -` in another terminal
import re

import requests
from scapy.all import *

LIVE_PCAP="/tmp/scapy.pcap"

def top_50_websites():
    pagetext = requests.get('https://www.alexa.com/topsites').text
    print("Getting top websites...")
    return re.findall(r"\"/siteinfo/([a-zA-Z0-9-_.]+)\"", pagetext)

def top_500_websites():
    site = "https://moz.com/top500"
    pagetext = requests.get(site).text
    return re.findall(r'href="http://([a-zA-Z0-9-_.]+)"', pagetext)

def ping(packet, sites, save_file):
    pkt_pipe = PcapWriter(save_file, append=True, sync=True)
    pkt_type = str(type(packet))[26:-2]
    for site in sites:
        try:
            ans, unans = sr( IP(dst=site) / packet, timeout=1, retry=0, verbose=False)
            if ans:
                pkt_pipe.write(ans[0])
                if pkt_type == 'UDP':
                    print("UDP ping from", site)
            else:
                if pkt_type != 'UDP':
                    print("no", pkt_type, "response from", site)
                pkt_pipe.write(unans[0])
        except socket.gaierror:
            print("Skipping", site, "because its IP cannot be found.")

tcp_ping = TCP(sport=RandShort(), dport=80, flags='S')
icmp_ping = ICMP()
udp_ping = UDP(dport=0)

top_sites = top_50_websites()
ping( tcp_ping, top_sites, LIVE_PCAP )
ping( icmp_ping, top_sites, LIVE_PCAP )
ping( udp_ping, top_sites, LIVE_PCAP )