Use 64bit integer methods and internal rate calculation

[svenstaro]

The problem with the previous methods for getting the total byte counts is that it would overflow too often. Overflowing is a lot less likely with 64bit integers. Also, this changes the transmission rate calculation or rather it removes it and uses the values provided by the fritzbox directly.

I tested this in my own network and it seems to work just fine.

This should also fix #20.

[svenstaro]

Some measurements with this code:

from time import sleep
from fritzconnection.lib.fritzstatus import FritzStatus
fc = FritzStatus()
while True:
    print(fc.str_transmission_rate)
    sleep(5)

Test downloading at 500 Mbit/s

Before:

('1.0 MB', '65.6 MB')
('679.4 KB', '32.4 MB')
('332.8 KB', '4.9 MB')
('22.5 KB', '34.5 KB')
('5.2 KB', '154.3 KB')
('11.0 KB', '399.9 KB')
('338.6 KB', '75.5 KB')
('133.0 KB', '1.2 MB')
('1.0 MB', '61.7 MB')
('553.0 KB', '-769531142.0 bytes')
('1.1 MB', '58.4 MB')
('1.1 MB', '63.4 MB')
('1.0 MB', '62.8 MB')
('474.6 KB', '31.1 MB')
('805.7 KB', '58.0 MB')
('1.0 MB', '66.4 MB')
('586.4 KB', '63.8 MB')
('1.1 MB', '30.4 MB')
('790.3 KB', '64.3 MB')
('782.4 KB', '60.1 MB')
('1.1 MB', '70.5 MB')
('532.3 KB', '32.8 MB')
('1.0 MB', '69.3 MB')
('804.1 KB', '-753839585.0 bytes')
('386.0 KB', '62.0 MB')
('885.7 KB', '32.7 MB')
('301.7 KB', '14.2 MB')
('559.1 KB', '6.0 MB')
('248.2 KB', '35.2 KB')

After:

('282.9 KB', '56.9 KB')
('12.9 KB', '104.4 KB')
('954.0 KB', '54.6 MB')
('851.8 KB', '39.1 MB')
('225.8 KB', '34.3 KB')
('13.2 KB', '7.5 KB')
('7.5 KB', '67.4 KB')
('9.7 KB', '390.9 KB')
('352.3 KB', '34.1 KB')
('117.2 KB', '198.9 KB')
('737.6 KB', '43.7 MB')
('969.1 KB', '54.8 MB')
('1002.1 KB', '54.3 MB')
('976.1 KB', '52.0 MB')
('1002.5 KB', '55.2 MB')
('799.8 KB', '55.2 MB')
('728.8 KB', '53.8 MB')
('744.7 KB', '51.7 MB')
('1.0 MB', '56.8 MB')
('1013.1 KB', '59.1 MB')
('815.2 KB', '54.3 MB')
('646.8 KB', '53.1 MB')
('1009.4 KB', '59.1 MB')
('1.0 MB', '57.2 MB')
('750.0 KB', '58.3 MB')
('680.7 KB', '54.6 MB')
('707.8 KB', '56.2 MB')
('742.1 KB', '55.8 MB')

[ZephireNZ]

Thank you for this! I was really wanting to see data usage but the value going negative really messed that up 😅

[svenstaro]

@kbr any chance you can merge this and cut a release? It would help my graphs tremendously.

[kbr]

Hopefully in July I may have some time to work on the next release.