Getting Traffic Monitor Values Programmatically

[macdis]

I'm wondering if it's possible to retrieve Traffic Monitor throughput data programmatically (MB/s, see screenshot).

I can retrieve the data via a series of curl calls, but is there is a simpler way to retrieve it?

My current method is ok, I guess, but clunky. Basically, it's as follows:

1. Get the login_authorization token (hashed username+password) via Chrome dev tools. This only has to be done once and can be reused until you change your username or password.
2. curl login.cgi, using the login_authorization token to get the asus_token session cookie.
3. curl update.cgi using the asus_token session cookie to retrieve the data. Since the data is cumulative and measured in bytes, this step has to be done twice to calculate a transfer rate in bytes/second. The retrieved data is of the following form, which indicates cumulative byte values in hex:

netdev = {
 'BRIDGE':{rx:0xb37d3bc3c0,tx:0x933c86706a}
,'INTERNET':{rx:0x58aea7d5e2,tx:0x75cae6fe6e}
,'WIRED':{rx:0xde923a8334,tx:0xbe071d1285}
,'WIRELESS0':{rx:0x1f4490,tx:0xd208abd}
,'WIRELESS1':{rx:0x1d46764,tx:0xd9824ce}
,'LACP1':{rx:0x38d8681136,tx:0x1cb1e05be1}
,'LACP2':{rx:0x905d616b46,tx:0x8ca6fe4c7e}
}

4. Logout via curl.
5. Do the math (to convert cumulative bytes to Mb/s or whatever).

(I basically adapted the above process from a sort of unrelated but interesting tutorial on a now dead website. Here's the wayback machine link, if anyone's interested.)

I don't think it matters much, but I have an RT-AX88U running 3004.388.8_4.

Thanks!