# -*- coding: utf-8 -*-
# 扫描指定 ip
import socket


def scan_ports(ip, start_port, end_port):
    open_ports = []
    for port in range(start_port, end_port + 1):
        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        sock.settimeout(1)
        try:
            result = sock.connect_ex((ip, port))
            if result == 0:
                open_ports.append(port)
            sock.close()
        except socket.error as err:
            print(f"Error: {err}")
            sock.close()
    return open_ports


target_ip = 'erhe.top'
start_port = 20787
end_port = 20787

open_ports = scan_ports(target_ip, start_port, end_port)
print(f"Open ports on {target_ip}: {open_ports}")