Fix services error handling on AUTHENTICATE commands#175
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…ices https://ircv3.net/specs/extensions/sasl-3.1 says: "ERR_SASLABORTED is sent when the SASL authentication is aborted because the client sent an AUTHENTICATE command with * as the parameter"
Previously, this returned a generic error to sable_ircd (which it does not know how to handle gracefully) and did not clean up the session state on the sable_services side
An example case where this is expected is when clients use an invalid nickname as authcid (eg. empty string), which caused this message to be returned: Ok(Error("Unknown error: Invalid value for Nickname: "))
spb
reviewed
Feb 8, 2026
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