ping内网Ip,找出内网21网段未被使用的ip地址

 

 

#!/usr/bin/env python
# -*- coding: utf-8 -*-


import subprocess
import ipaddress
import time


def ping_ip(ip, timeout=1, retries=5, delay=1):
    """Ping an IP address multiple times with a timeout."""
    success = False
    for _ in range(retries):
        try:
            # 使用subprocess执行Windows的ping命令，并设置超时
            # 注意：Windows使用-n，Linux使用-c
            param = ['ping', '-n', '1', '-w', str(timeout * 1000), ip]  # 注意：-w 的单位是毫秒
            result = subprocess.run(param, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True,
                                    timeout=(timeout + 2))

            # 检查ping是否成功
            # 通常，如果ping成功，result.stdout会包含"TTL="等字样
            # 但更可靠的方式是检查returncode是否为0（可能需要根据你的环境调整）
            if "TTL=" in result.stdout:  # 或者 if result.returncode == 0:
                success = True
                break
            else:
                print(f"Ping failed for {ip}: {result.stderr}")
                time.sleep(delay)  # 等待一段时间后重试
        except subprocess.TimeoutExpired:
            print(f"Ping timed out for {ip}")
            time.sleep(delay)
        except subprocess.CalledProcessError as e:
            # 当returncode不为0时，subprocess.run会抛出CalledProcessError
            # 但由于我们已经检查了stdout，这里可能不需要额外的处理
            print(f"Ping failed with error code {e.returncode} for {ip}")
            break  # 如果ping失败，可以选择不再重试


def find_unused_ips(network, prefix_len=24, ping_count=5):
    """Find unused IPs in a given network."""
    net = ipaddress.ip_network(f"{network}/{prefix_len}", strict=False)
    unused_ips = []

    # 跳过.1（通常是网关）和.255（广播地址）
    for host in net.hosts():
        if host.is_private and not (host.exploded[-1] == '1' or host.exploded[-1] == '255'):
            if not ping_ip(str(host), ping_count):
                unused_ips.append(str(host))

    return unused_ips


# 假设我们要扫描的网段是192.168.21.x
network = '192.168.21.0'
unused_ips = find_unused_ips(network)
print("Unused IPs in the network:", unused_ips)