RFC 3261, "SIP: Session Initiation Protocol", June 2002

Note: This RFC has been updated by RFC 3265, RFC 3853, RFC 4320, RFC 4916, RFC 5393, RFC 5621, RFC 5626, RFC 5630, RFC 5922, RFC 5954, RFC 6026, RFC 6141, RFC 6665, RFC 6878, RFC 7462, RFC 7463, RFC 8217, RFC 8591, RFC 8760, RFC 8898, RFC 8996

Errata ID: 7529
Status: Reported
Type: Technical
Publication Format(s) : TEXT
Reported By: Shraddha Soni
Date Reported: 2023-05-29

Section 25.1 says:

This is intended to behave exactly as HTTP/1.1 as described in RFC 2616 [8].
The SWS construct is used when linear white space is optional, generally between tokens and separators.

      LWS  =  [*WSP CRLF] 1*WSP ; linear whitespace

It should say:

This is intended to behave exactly as HTTP/1.1 as described in RFC 2616 [8].
The SWS construct is used when linear white space is optional, generally between tokens and separators.

      LWS  =  [CRLF] 1*WSP ; linear whitespace

Notes:

RFC 2616 states
LWS = [CRLF] 1*( SP | HT )

RFC 2234 states
WSP = SP / HTAB
; white space
RFC 3261 is referencing both for BNF to follow, but looks like a new BNF is stated. So either it should not reference to follow RFC 2616 exactly or follow the same BNF as 2616.

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