Too bad the journal entry doesn't have more details (and I'm too lazy to do further digging on my own). Is this a RE based on actual server binaries that someb

Too bad the journal entry doesn't have more details (and I'm too lazy to do further digging on my own). Is this a RE based on actual server binaries that somebody managed to get copies of? Or is it a RE of the client end of the protocol, just being fed new data?