Specifications for CTCP as well as DCC protocols which are now standard supplements of IRC.
http://www.irchelp.org/irchelp/rfc/ctcpspec.html - New window - Cached - Archive -
An attempt to modernize the IRC protocol with backward compatibility in mind, making it easier to use. Includes an RFC draft and a FAQ section.
http://www.irc-plus.org/ - New window - Cached - Archive -
An extention to the standard DCC protocol which offers the option to simply restart a transfer at the point it was broken off and to proceed without loss of connection time.
http://www.mirc.co.uk/help/dccresum.txt - New window - Cached - Archive -
The original and authoritative RFC for IRC, updated by RFC 2810, 2811, 2812 and 2813. Written in 1993, it does not include details on DCC or CTCP, which came later.
http://www.irchelp.org/irchelp/rfc/ - New window - Cached - Archive -