decoding the raw data from Live Timing Client

[w-i-z-a-r-d]

the raw data collected how is it encrypted, base64?

[theOehrly]

It's not really "encrypted" but yes, base64 and some compression. This is the code for decoding it:

Fast-F1/fastf1/_api.py

Lines 1756 to 1758 in 70c038a

	if zipped:
	text = zlib.decompress(base64.b64decode(text), -zlib.MAX_WBITS)
	return parse(text.decode('utf-8-sig'))

[w-i-z-a-r-d]

sometimes in the collected data there is a Key "G", what does that contain ?

[theOehrly]

Some kind of "groups token – an encrypted string representing group membership", so it is only related to the SignalR connection itself. This https://blog.3d-logic.com/2015/03/29/signalr-on-the-wire-an-informal-description-of-the-signalr-protocol/ seems to be the easiest to read description of the SignalR protocol that I have found so far.