< draft-fielding-url-syntax-08.txt		draft-fielding-url-syntax-09.txt >
	Network Working Group T. Berners-Lee, MIT/LCS		Network Working Group T. Berners-Lee, MIT/LCS
	INTERNET-DRAFT R. Fielding, U.C. Irvine		INTERNET-DRAFT R. Fielding, U.C. Irvine
	draft-fielding-url-syntax-08 L. Masinter, Xerox Corporation		draft-fielding-url-syntax-09 L. Masinter, Xerox Corporation
	Expires six months after publication date October 14, 1997		Expires six months after publication date October 21, 1997
	Uniform Resource Locators (URL): Generic Syntax and Semantics		Uniform Resource Locators (URL): Generic Syntax and Semantics
	Status of this Memo		Status of this Memo
	This document is an Internet-Draft. Internet-Drafts are working		This document is an Internet-Draft. Internet-Drafts are working
	documents of the Internet Engineering Task Force (IETF), its areas,		documents of the Internet Engineering Task Force (IETF), its areas,
	and its working groups. Note that other groups may also distribute		and its working groups. Note that other groups may also distribute
	working documents as Internet-Drafts.		working documents as Internet-Drafts.
	skipping to change at line 591 ¶		skipping to change at line 591 ¶
	field. This practice is NOT RECOMMENDED, because the passing of		field. This practice is NOT RECOMMENDED, because the passing of
	authentication information in clear text (such as URLs) has proven to		authentication information in clear text (such as URLs) has proven to
	be a security risk in almost every case where it has been used.		be a security risk in almost every case where it has been used.
	The host is a domain name of a network host, or its IPv4 address as		The host is a domain name of a network host, or its IPv4 address as
	a set of four decimal digit groups separated by ".". Literal IPv6		a set of four decimal digit groups separated by ".". Literal IPv6
	addresses are not supported.		addresses are not supported.
	hostport = host [ ":" port ]		hostport = host [ ":" port ]
	host = hostname | IPv4address		host = hostname | IPv4address
	hostname = *( domainlabel "." ) toplabel		hostname = *( domainlabel "." ) toplabel [ "." ]
	domainlabel = alphanum | alphanum *( alphanum | "-" ) alphanum		domainlabel = alphanum | alphanum *( alphanum | "-" ) alphanum
	toplabel = alpha | alpha *( alphanum | "-" ) alphanum		toplabel = alpha | alpha *( alphanum | "-" ) alphanum
	IPv4address = 1*digit "." 1*digit "." 1*digit "." 1*digit		IPv4address = 1*digit "." 1*digit "." 1*digit "." 1*digit
	port = *digit		port = *digit
	Hostnames take the form described in Section 3.5 of [RFC1034] and		Hostnames take the form described in Section 3 of [RFC1034] and
	Section 2.1 of [RFC1123]: a sequence of domain labels separated by		Section 2.1 of [RFC1123]: a sequence of domain labels separated by
	".", each domain label starting and ending with an alphanumeric		".", each domain label starting and ending with an alphanumeric
	character and possibly also containing "-" characters. The rightmost		character and possibly also containing "-" characters. The rightmost
	domain label of a fully qualified domain name will never start with a		domain label of a fully qualified domain name will never start with a
	digit, thus syntactically distinguishing domain names from IPv4		digit, thus syntactically distinguishing domain names from IPv4
	addresses. To actually be "Uniform" as a resource locator, a URL		addresses, and may be followed by a single "." if it is necessary to
	hostname should be a fully qualified domain name. In practice,		distinguish between the complete domain name and any local domain.
	however, the host component may be a local domain literal.		To actually be "Uniform" as a resource locator, a URL hostname should
			be a fully qualified domain name. In practice, however, the host
			component may be a local domain literal.
	Note: A suitable representation for including a literal IPv6		Note: A suitable representation for including a literal IPv6
	address as the host part of a URL is desired, but has not yet		address as the host part of a URL is desired, but has not yet
	been determined or implemented in practice.		been determined or implemented in practice.
	The port is the network port number for the server. Most schemes		The port is the network port number for the server. Most schemes
	designate protocols that have a default port number. Another port		designate protocols that have a default port number. Another port
	number may optionally be supplied, in decimal, separated from the		number may optionally be supplied, in decimal, separated from the
	host by a colon. If the port is omitted, the default port number is		host by a colon. If the port is omitted, the default port number is
	assumed.		assumed.
	skipping to change at line 1003 ¶		skipping to change at line 1005 ¶
	intended to be secret. In particular, the use of a password within		intended to be secret. In particular, the use of a password within
	the "site" component of a URL is strongly disrecommended except		the "site" component of a URL is strongly disrecommended except
	in those rare cases where the 'password' parameter is intended		in those rare cases where the 'password' parameter is intended
	to be public.		to be public.
	8. Acknowledgements		8. Acknowledgements
	This document was derived from RFC 1738 [RFC1738] and RFC 1808		This document was derived from RFC 1738 [RFC1738] and RFC 1808
	[RFC1808]; the acknowledgements in those specifications still		[RFC1808]; the acknowledgements in those specifications still
	apply. In addition, contributions by Lauren Wood, Martin Duerst,		apply. In addition, contributions by Lauren Wood, Martin Duerst,
	Gisle Aas, Martijn Koster, Ryan Moats and Foteos Macrides are		Gisle Aas, Martijn Koster, Ryan Moats, Foteos Macrides and
	gratefully acknowledged.		Dave Kristol are gratefully acknowledged.
	9. References		9. References
	[RFC1630] Berners-Lee, T., "Universal Resource Identifiers in WWW: A		[RFC1630] Berners-Lee, T., "Universal Resource Identifiers in WWW: A
	Unifying Syntax for the Expression of Names and Addresses of		Unifying Syntax for the Expression of Names and Addresses of
	Objects on the Network as used in the World-Wide Web", RFC 1630,		Objects on the Network as used in the World-Wide Web", RFC 1630,
	CERN, June 1994.		CERN, June 1994.
	[RFC1738] Berners-Lee, T., Masinter, L., and M. McCahill, Editors,		[RFC1738] Berners-Lee, T., Masinter, L., and M. McCahill, Editors,
	"Uniform Resource Locators (URL)", RFC 1738, CERN, Xerox		"Uniform Resource Locators (URL)", RFC 1738, CERN, Xerox
	skipping to change at line 1156 ¶		skipping to change at line 1158 ¶
	site = server | authority		site = server | authority
	authority = *( unreserved | escaped |		authority = *( unreserved | escaped |
	";" | ":" | "@" | "&" | "=" | "+" )		";" | ":" | "@" | "&" | "=" | "+" )
	server = [ [ userinfo ] "@" ] hostport ]		server = [ [ userinfo ] "@" ] hostport ]
	userinfo = *( unreserved | escaped | ":" | ";" | "&" |		userinfo = *( unreserved | escaped | ":" | ";" | "&" |
	"=" | "+" )		"=" | "+" )
	hostport = host [ ":" port ]		hostport = host [ ":" port ]
	host = hostname | IPv4address		host = hostname | IPv4address
	hostname = *( domainlabel "." ) toplabel		hostname = *( domainlabel "." ) toplabel [ "." ]
	domainlabel = alphanum | alphanum *( alphanum | "-" ) alphanum		domainlabel = alphanum | alphanum *( alphanum | "-" ) alphanum
	toplabel = alpha | alpha *( alphanum | "-" ) alphanum		toplabel = alpha | alpha *( alphanum | "-" ) alphanum
	IPv4address = 1*digit "." 1*digit "." 1*digit "." 1*digit		IPv4address = 1*digit "." 1*digit "." 1*digit "." 1*digit
	port = *digit		port = *digit
	path = [ "/" ] path_segments		path = [ "/" ] path_segments
	path_segments = segment *( "/" segment )		path_segments = segment *( "/" segment )
	segment = *pchar *( ";" param )		segment = *pchar *( ";" param )
	param = *pchar		param = *pchar
	pchar = unreserved | escaped | ":" | "@" | "&" | "=" | "+"		pchar = unreserved | escaped | ":" | "@" | "&" | "=" | "+"
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