> although there are servers that send a cookie in a PING at > connect time that they require to be reflected back > correctly as a countermeasure for certain

> although there are servers that send a cookie in a PING at > connect time that they require to be reflected back > correctly as a countermeasure for certain kinds of proxy > abuse. That tripped me up when writing an IRC bot - it worked on many servers but failed on one particular server that sent the PING cookies.