10

我有一个服务器IP 地址列表，我需要检查每个地址是否在线以及延迟多长时间。

我还没有找到任何直接的方法来实现这一点，而且在准确计算延迟方面似乎存在一些问题。

有任何想法吗？

4

6 回答 6

7

如果您已经习惯于解析字符串，则可以使用 subprocess 模块将您要查找的数据转换为字符串，如下所示：

>>> import subprocess
>>> p = subprocess.Popen(["ping.exe","www.google.com"], stdout = subprocess.PIPE)
>>> print p.communicate()[0]

Pinging www.l.google.com [209.85.225.99] with 32 bytes of data:

Reply from 209.85.225.99: bytes=32 time=59ms TTL=52
Reply from 209.85.225.99: bytes=32 time=64ms TTL=52
Reply from 209.85.225.99: bytes=32 time=104ms TTL=52
Reply from 209.85.225.99: bytes=32 time=64ms TTL=52

Ping statistics for 209.85.225.99:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 59ms, Maximum = 104ms, Average = 72ms
于 2010-03-26T17:45:11.413 回答
5

按照hlovdal使用fping的建议，这是我用于测试代理的解决方案。我只在Linux下试过。如果无法测量 ping 时间，则返回一个大值。用法：print get_ping_time('<ip>:<port>')。

import shlex  
from subprocess import Popen, PIPE, STDOUT

def get_simple_cmd_output(cmd, stderr=STDOUT):
    """
    Execute a simple external command and get its output.
    """
    args = shlex.split(cmd)
    return Popen(args, stdout=PIPE, stderr=stderr).communicate()[0]

def get_ping_time(host):
    host = host.split(':')[0]
    cmd = "fping {host} -C 3 -q".format(host=host)
    res = [float(x) for x in get_simple_cmd_output(cmd).strip().split(':')[-1].split() if x != '-']
    if len(res) > 0:
        return sum(res) / len(res)
    else:
        return 999999
于 2012-12-27T12:46:07.290 回答
3

如果您想避免实现所有网络通信细节，您可以尝试在fping之上构建一些东西：

fping 是一个类似的程序，它使用 Internet 控制消息协议 (ICMP) 回显请求来确定目标主机是否正在响应。fping 与 ping 的不同之处在于您可以在命令行上指定任意数量的目标，或者指定一个包含要 ping 的目标列表的文件。fping 不会在超时或回复之前发送到一个目标，而是发送一个 ping 数据包并以循环方式移动到下一个目标。

于 2010-03-26T17:44:55.173 回答
2

https://github.com/matthieu-lapeyre/network-benchmark我基于FlipperPA工作的解决方案：https ://github.com/FlipperPA/latency-tester

import numpy
import pexpect


class WifiLatencyBenchmark(object):
    def __init__(self, ip):
        object.__init__(self)

        self.ip = ip
        self.interval = 0.5

        ping_command = 'ping -i ' + str(self.interval) + ' ' + self.ip
        self.ping = pexpect.spawn(ping_command)

        self.ping.timeout = 1200
        self.ping.readline()  # init
        self.wifi_latency = []
        self.wifi_timeout = 0

    def run_test(self, n_test):
        for n in range(n_test):
            p = self.ping.readline()

            try:
                ping_time = float(p[p.find('time=') + 5:p.find(' ms')])
                self.wifi_latency.append(ping_time)
                print 'test:', n + 1, '/', n_test, ', ping latency :', ping_time, 'ms'
            except:
                self.wifi_timeout = self.wifi_timeout + 1
                print 'timeout'

        self.wifi_timeout = self.wifi_timeout / float(n_test)
        self.wifi_latency = numpy.array(self.wifi_delay)

    def get_results(self):
        print 'mean latency', numpy.mean(self.wifi_latency), 'ms'
        print 'std latency', numpy.std(self.wifi_latency), 'ms'
        print 'timeout', self.wifi_timeout * 100, '%'


if __name__ == '__main__':
    ip = '192.168.0.1'
    n_test = 100

    my_wifi = WifiLatencyBenchmark(ip)

    my_wifi.run_test(n_test)
    my_wifi.get_results()

Github 仓库： https ://github.com/matthieu-lapeyre/network-benchmark

于 2015-01-27T15:52:56.703 回答
1

这篇文章有点老了，我认为今天有更好的方法。我是 python 新手，但这是我在项目中所做的：

from pythonping import ping

def ping_host(host):
    ping_result = ping(target=host, count=10, timeout=2)

    return {
        'host': host,
        'avg_latency': ping_result.rtt_avg_ms,
        'min_latency': ping_result.rtt_min_ms,
        'max_latency': ping_result.rtt_max_ms,
        'packet_loss': ping_result.packet_loss
    }

hosts = [
    '192.168.48.1',
    '192.168.48.135'
]

for host in hosts:
    print(ping_host(host))

结果：

{'host': '192.168.48.1', 'avg_latency': 2000.0, 'min_latency': 2000, 'max_latency': 2000, 'packet_loss': 1.0}
{'host': '192.168.48.135', 'avg_latency': 42.67, 'min_latency': 41.71, 'max_latency': 44.17, 'packet_loss': 0.0}

你可以在这里找到 pythonping 库：https ://pypi.org/project/pythonping/

于 2021-07-19T14:28:31.737 回答
1

感谢 Jabba，但该代码对我来说无法正常工作，所以我更改了以下内容

import shlex
from subprocess import Popen, PIPE, STDOUT


def get_simple_cmd_output(cmd, stderr=STDOUT):
    """
    Execute a simple external command and get its output.
    """
    args = shlex.split(cmd)
    return Popen(args, stdout=PIPE, stderr=stderr).communicate()[0]


def get_ping_time(host):
    host = host.split(':')[0]
    cmd = "fping {host} -C 3 -q".format(host=host)
    # result = str(get_simple_cmd_output(cmd)).replace('\\','').split(':')[-1].split() if x != '-']
    result = str(get_simple_cmd_output(cmd)).replace('\\', '').split(':')[-1].replace("n'", '').replace("-",
                                                                                                        '').replace(
        "b''", '').split()
    res = [float(x) for x in result]
    if len(res) > 0:
        return sum(res) / len(res)
    else:
        return 999999


def main():
    # sample hard code for test
    host = 'google.com'
    print([host, get_ping_time(host)])

    host = 'besparapp.com'
    print([host, get_ping_time(host)])



if __name__ == '__main__':
    main()
于 2018-02-19T15:47:57.847 回答