x-fb-zd dict dump

[novitae]

Hey, I am trying to find out how did you dumped the dictionary you are talking about here:

misc/fb-zstd.py

Line 23 in 157c17c

the dictionary gets never transmitted "over the wire". Instead, it is hardcoded into the client (from where I dumped it)

I would like to do it myself, because it seems that they added a new version, and that you can now specify which one do you want. I think that even if it is hardcoded, the dictionary doesn't change, but id like to get it.

[hiflybo]

How to dump the zstd dictionary? Thank you for your answer！

[mame82]

T.b.h. even if I could remember what I did 3 years back, I would not give such a clear advise. Suggesting (how I would approach it, if I have to redo it): Grab the (old) APK I used, extract the library. Search for the dict from my script (bytematching), reverse respective code (referencing the dict) ... apply gained knowledge to newer implementations as starting point for reversing.