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#!/usr/bin/env python3
import sys
import socket
def main():
if len(sys.argv) != 2:
print("Программа ожидает 1 аргумент: доменное имя хоста")
return 1
# Input.
host_name = sys.argv[1]
print(f"Доменное имя хоста: {host_name}")
host_ip = socket.gethostbyname(host_name)
print(f"IP-адрес хоста: {host_ip}")
host_port = 33433
timeout = 2 # Seconds.
receiving_socket = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_ICMP)
receiving_socket.setsockopt(socket.SOL_IP, socket.IP_HDRINCL, 1)
receiving_socket.settimeout(timeout)
receiving_socket.bind(("", host_port))
sending_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP)
sending_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
received_ip = None
current_hop = 1
max_hop = 100
while received_ip != host_ip and current_hop < max_hop:
sending_socket.setsockopt(socket.IPPROTO_IP, socket.IP_TTL, current_hop)
sus = True
for i in range(7):
try:
sending_socket.sendto(bytes(str(current_hop), 'utf-8'), (host_ip, host_port))
data, addr = receiving_socket.recvfrom(1)
if addr:
received_ip = addr[0]
print(f"hop: {current_hop} -> {received_ip}")
sus = False
break
else:
raise "sus"
except:
continue
if sus:
print(f"hop: {current_hop} -> *")
current_hop += 1
if __name__ == "__main__":
main()
Что-то я давно не заходил... был занят, писал утилиту. Лицензия – «MIT».
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