a python script which will reset the router trough telnet if there is no internet connection . this script will reopen transmission-qt too . works in windows machines

restart.py

import telnetlib
import time
import re
import subprocess
import os

resCount=0
pingCount=0

def restart():
    hostserver = "192.168.1.1"
    newline = "\n"
    username = "root" + newline
    password = "admin" + newline
    telnet = telnetlib.Telnet(hostserver)
    telnet.read_until("login: ")
    telnet.write(username)
    telnet.read_until("Password: ")
    telnet.write(password)
    time.sleep(1)
    telnet.write("reboot" +"\n")
    time.sleep(1)
    telnet.close()
    global resCount
    resCount+=1
    print 'restart...'

def restartTransmission():
	os.system("taskkill /im Transmission-qt.exe")
	time.sleep(1)
	subprocess.Popen("\"C:\\Program Files\\Transmission\\transmission-qt.exe\"")

def ping():
    global pingCount
    pingCount+=1
    website = "4.2.2.4"
    try:
        ping = subprocess.Popen(["ping", website], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        out, error = ping.communicate()
        if out:
            print out
            if "Reply from " + website in out and not "unreachable" in out:
                return True
            else:
            	return False 
    except subprocess.CalledProcessError:
        print "Couldn't get a ping"
    return False

while True:
    os.system("cls")
    print("ping #%d , res #%d" % (pingCount , resCount) )

    try:
        if not ping():
            print 'ping not success'
            restart()
            time.sleep(99)
            restartTransmission()
        else:
            print 'ping ok'
    except Exception:
        time.sleep(10)
    time.sleep(5)