i have a really bad ADSL connection with really bad SNR. restarting the router helps most of the time. and it lasts for 15 mins tops. so automate the process.

restart my fucking router if connection drops.py

import re
import getpass
import sys
import telnetlib
import time, threading
from subprocess import check_output

def routerTelnet():
    print (time.ctime())
    
    speedText = check_output(['C:\Program Files\cFosSpeed\spd.exe', 'speed']).decode('utf-8')
     
    regex = re.compile(r'txspeed=(\d+|\d+\.\d+)[K|\s]\s+fixed=', re.MULTILINE)

    matches = [m.groups() for m in regex.finditer(speedText)]

    print (speedText)
    print (matches)
     
    upspeed = float(matches[0][0]) 

    if upspeed > 1024:
        upspeed /= 1024; 
     
    print ("upload speed = ", upspeed)

    if  upspeed < 20.0 and upspeed > 4.0:
        print("speed dropped: ")
        
        HOST = "192.168.1.1"
        user = 'admin'
        password = '?password?'

        tn = telnetlib.Telnet()
        tn.open(HOST, 23)
        tn.read_until( 'Username: '.encode('ascii'))
        tn.write((user + "\r\n").encode('ascii'))
         
        tn.read_until( 'Password: '.encode('ascii'))
        tn.write((password + "\r\n").encode('ascii')  )

        print("restarting the router")
         
        tn.write( ('reboot' + '\r\n').encode('ascii'))
        
        print(tn.read_all())
    else:
        print("speed is normal")
 
    threading.Timer(1 * 60 * 15, routerTelnet).start()

routerTelnet()