Drop client->server messages over 100KB
Drop client->server messages over 100KB

These messages are most likely some sort of DDoS; PS doesn't natively
use any messages larger than I think 3KB (is that what teams are?)

server->client messages, on the other hand, can be much longer because
if you join an in-progress battle, PS will send you the entire battle
log up to that point, which can be pretty huge.

jd4564/Pokemon-Showdown,jd4564/Pokemon-Showdown