%% You should probably cite rfc7232 instead of this I-D.
@techreport{ietf-httpbis-p4-conditional-22,
	number =	{draft-ietf-httpbis-p4-conditional-22},
	type =		{Internet-Draft},
	institution =	{Internet Engineering Task Force},
	publisher =	{Internet Engineering Task Force},
	note =		{Work in Progress},
	url =		{https://datatracker.ietf.org/doc/html/draft-ietf-httpbis-p4-conditional-22},
        author =	{Roy T. Fielding and Julian Reschke},
	title =		{{Hypertext Transfer Protocol (HTTP/1.1): Conditional Requests}},
	pagetotal =	26,
	year =		** No value found for 'doc.pub_date.year' **,
	month =		** No value found for 'doc.pub_date' **,
	day =		** No value found for 'doc.pub_date.day' **,
	abstract =	{The Hypertext Transfer Protocol (HTTP) is an application-level protocol for distributed, collaborative, hypertext information systems. This document defines HTTP/1.1 conditional requests, including metadata header fields for indicating state changes, request header fields for making preconditions on such state, and rules for constructing the responses to a conditional request when one or more preconditions evaluate to false.},
}