python网络流量监控器

Question

我正在尝试编写一个可以监控网络流量的代码，有没有办法编写可以监控进出流量（带宽）并能够在 python 中查看实时带宽使用情况的代码？

Answer 1

假设您使用 Linux：

读取/sys/class/net/{INTERFACE_NAME}/statistics/tx_bytes&/sys/class/net/{INTERFACE_NAME}/statistics/rx_bytes以获取发送和接收的字节。然后您可以计算时间步长和瞧之间的差异：您有数据速率。有关 tx/rx 文件的说明，请参阅内核文档。

编辑：快速和肮脏的实现只是为了展示这个想法：

import time

def transmissionrate(dev, direction, timestep):
    """Return the transmisson rate of a interface under linux
    dev: devicename
    direction: rx (received) or tx (sended)
    timestep: time to measure in seconds
    """
    path = "/sys/class/net/{}/statistics/{}_bytes".format(dev, direction)
    f = open(path, "r")
    bytes_before = int(f.read())
    f.close()
    time.sleep(timestep)
    f = open(path, "r")
    bytes_after = int(f.read())
    f.close()
    return (bytes_after-bytes_before)/timestep

devname = "wlo1"
timestep = 2 # Seconds
print(transmissionrate(devname, "rx", timestep))