Question

As a learning exercise, I m writing a Python program to connect to a channel on an IRC network, so I can output messages in the channel to stdout. I m using asynchat and manually sending the protocol messages, rather than using something like Twisted or existing bot code from the net - again, it s a more useful learning experience that way.

I can send JOIN and USER commands quite happily, and can PING/PONG away as required. However, I ve noticed when opening a socket to port 6667, I ll receive some messages:

NOTICE AUTH :*** Looking up your hostname...
NOTICE AUTH :*** Checking ident
NOTICE AUTH :*** Found your hostname
NOTICE AUTH :*** No identd (auth) response

even if I ve not yet sent the JOIN/USER commands.

So, is this opening sequence of notifications specified anywhere? As far as I can see, the RFC doesn t specify for anything in particular to happen before the client sends the JOIN command, and I wasn t sure whether to wait for receipt of these notices before sending the JOIN command, and if so how do I detect that I ve received all of the notices?

Answer 1

There s no RFC requirement to do this, it s just a common thing that servers in the wild do. Observe that they re plain old NOTICE commands (i.e. just messages). Just treat them as messages sent to a psuedo-user "AUTH" (since the server doesn t have a better name for you yet). You re not required to wait for them, and the server is not required to send them.

友情链接