How to set initial congestion window size in android?

Question

I'm currently try to control initial congestion window in my android phone.

I found some useful method that works in desktop linux, however it does not work in android..

I tried solution that use ip route via adb shell as follows:

cmd/results

ip route change default via 192.0.0.2 initcwnd 20/RTNETLINK answers: No such file or directory

ip route | head -n 1 | while read p; do ``echo ip route change $p initcwnd 500 initrwnd 500``; done/result of cmd: 192.0.0.0/27 dev rmnet_data2 proto kernel scope link src 192.0.0.2 initcwnd 500 initrwnd 500, however actual initcwnd does not changed.

If there is other way to change initial cwnd in android, please let me know.

Thanks in advance.

Answer 1

You try just adding a route instead:

ip route add default via 192.0.0.2 initcwnd 20

This will generally work but you may need to play with other parameters like metric.

It seems that Linux has issues changing the route parameters on a route that has been added by dhcp.