0005949: ERR_NOSUCHNICK should not be sent as a reply to NOTICE

ID	Project	Category	View Status	Date Submitted	Last Update

0005949	unreal	ircd	public	2021-07-01 22:54	2021-07-03 09:37

Reporter	progval	Assigned To	syzop
Priority	normal	Severity	minor	Reproducibility	always
Status	confirmed	Resolution	open

Summary	0005949: ERR_NOSUCHNICK should not be sent as a reply to NOTICE
Description	This is a bit of a controversial issue, but: "automatic replies must never be sent in response to a NOTICE message. This rule applies to servers too - they must not send any error reply back to the client on receipt of a notice" <https://tools.ietf.org/html/rfc1459#section-4.4.2> 'automatic replies MUST NEVER be sent in response to a NOTICE message. This rule applies to servers too - they MUST NOT send any error repl back to the client on receipt of a notice." <https://tools.ietf.org/html/rfc2812#section-3.3.2> and Unreal does not follow this
Steps To Reproduce	C -> S: NOTICE #nonexistent :hello there S -> C: :My.Little.Server 401 foo #nonexistent :No such nick/channel
Additional Information	Note that InspIRCd behaves this way too, intentionally: https://github.com/inspircd/inspircd/issues/1849 However, the Charybdis family and Ergo do follow it.
Tags	No tags attached.

3rd party modules

Date Modified	Username	Field	Change
2021-07-01 22:54	progval	New Issue
2021-07-03 09:37	syzop	Assigned To	=> syzop
2021-07-03 09:37	syzop	Status	new => confirmed
2021-07-03 09:37	syzop	Note Added: 0022075

syzop 2021-07-03 09:37 administrator ~0022075	Thanks for the report. Indeed, there's not really a consensus about it, but at UnrealIRCd we try to follow that rule. I've done fixes in this area before.