User:PeterMortensen/IRC shenanigans
Using IRC with the sigrok project
The easiest is using the web interface, but it also times out after a relatively short time, about one hour.
The expected response time can be up to 24 hours if posting at certain times of the day. Thus be sure somebody is actually active at the time you post. About 1900 hours UTC is usually a good time.
A better solution is to download and configure an IRC client, for instance Irssi (on Unix-like systems) and ChatZilla on Windows (though it is on its way out due to the move by Firefox/Mozilla to "Quantum") in 2017. This can also, if configured for it, log all traffic so you don't miss out on anything. For instance, a Raspberry Pi, even a first generation with low power consumption, can be set up with Irssi to log all traffic. It can also be logged into by SSH.
There are also commercial offerings that can log all traffic and that is guaranteed to be always up.