no_sudo.py

import socket
import struct
import time

def traceroute(host, max_hops=30, timeout=2):
    try:
        dest_addr = socket.gethostbyname(host)
    except socket.gaierror:
        print(f"Cannot resolve {host}")
        return

    port = 33434
    print(f"Tracing route to {host} [{dest_addr}] with max {max_hops} hops:")

    for ttl in range(1, max_hops + 1):
        # Create receiver and sender sockets
        recv_socket = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_ICMP)
        send_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP)
        
        # Set TTL on sending socket
        send_socket.setsockopt(socket.SOL_IP, socket.IP_TTL, ttl)
        recv_socket.settimeout(timeout)
        recv_socket.bind(("", port))

        # Send empty UDP packet
        send_socket.sendto(b"", (host, port))

        curr_addr = None
        try:
            _, curr_addr = recv_socket.recvfrom(512)
            curr_addr = curr_addr[0]
        except socket.timeout:
            pass
        finally:
            send_socket.close()
            recv_socket.close()

        if curr_addr:
            print(f"{ttl}\t{curr_addr}")
            if curr_addr == dest_addr:
                print("Trace complete.")
                break
        else:
            print(f"{ttl}\t*")

if __name__ == "__main__":
    traceroute("8.8.8.8")