发信人: kenmlee()
整理人: kenmlee(2000-07-08 16:48:55), 站内信件
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3.2.2 http URL
#3.2.2 http的URL/#
The "http" scheme is used to locate network resources via the HTTP
protocol. This section defines the scheme-specific syntax and
semantics for http URLs.
# "http"用于在HTTP协议中定位网络资源,本节定义http中使用的URL的模式定义
语法
和语义.
/#
http_URL = "http:" "//" host [ ":" port ] [ abs_path ]
host = <A legal Internet host domain name
or IP address (in dotted-decimal form),
as defined by Section 2.1 of RFC 1123>
port = *DIGIT
# http_URL = "http:" "//" host [ ":" port ] [ abs_path ]
host = <合法的 Internet 主机域名或 IP 地址(点十进制
),
参见 RFC 1123 的2.1节定义>
port = *DIGIT
/#
If the port is empty or not given, port 80 is assumed. The semantic
s
are that the identified resource is located at the server listening
for TCP connections on that port of that host, and the Request-URI
for the resource is abs_path. The use of IP addresses in URL's SHOU
LD
be avoided whenever possible (see RFC 1900 [24]). If the abs_path i
s
not present in the URL, it MUST be given as "/" when used as a
Request-URI for a resource (section 5.1.2).
# 如果未指定端口,则默认为80端口.意指指定的资源位于在该主机该端口侦听的
TCP连接
服务上,请求URI是资源的绝对路径(abs_path).在URL中使用IP地址应该(SHOU
LD)尽可
能避免(参见 RFC 1900 [24]).如果绝对路径未在URL中指定,在作为资源的请
求URI时
必须(MUST)用"/"标示.
/#
3.2.3 URI Comparison
#3.2.3 URI比较/#
When comparing two URIs to decide if they match or not, a client
SHOULD use a case-sensitive octet-by-octet comparison of the entire
URIs, with these exceptions:
# 当比较两个URI以决定两者是否相同时,客户应用程序应该(SHOULD)用整个URI
按
大小写敏感的字节比较,除非:
/#
o A port that is empty or not given is equivalent to the default
port for that URI;
o Comparisons of host names MUST be case-insensitive;
o Comparisons of scheme names MUST be case-insensitive;
o An empty abs_path is equivalent to an abs_path of "/".
# o 端口为空或未给定则与该URI的缺省端口相同;
o 主机名的比较必须(MUST)是大小写不敏感的;
o 协议名的比较必须(MUST)是大小些不敏感的;
o 空的绝对路径(abs_path)等于绝对路径"/".
/#
Characters other than those in the "reserved" and "unsafe" sets (se
e
section 3.2) are equivalent to their ""%" HEX HEX" encodings.
# 除了"保留"(reserved)和"不安全"(unsafe)字符集中的字符外,其它字符与它
们的
""%" HEX HEX"编码形式相同,参见3.2节.
/#
For example, the following three URIs are equivalent:
http://abc.com:80/~smith/home.html
http://ABC.com/%7Esmith/home.html
http://ABC.com:/%7esmith/home.html
# 例如以下三个URI是相同的:
http://abc.com:80/~smith/home.html
http://ABC.com/%7Esmith/home.html
http://ABC.com:/%7esmith/home.html
/#
3.3 Date/Time Formats
#3.3 日期/时间格式/#
3.3.1 Full Date
#3.3.1 完整日期/#
HTTP applications have historically allowed three different formats
for the representation of date/time stamps:
Sun, 06 Nov 1994 08:49:37 GMT ; RFC 822, updated by RFC 112
3
Sunday, 06-Nov-94 08:49:37 GMT ; RFC 850, obsoleted by RFC 1
036
Sun Nov 6 08:49:37 1994 ; ANSI C's asctime() format
# 由于历史原因HTTP应用允许使用三种不同的表示日期/时间戳的方式:
Sun, 06 Nov 1994 08:49:37 GMT ; RFC 822, RFC 1123 之更新
Sunday, 06-Nov-94 08:49:37 GMT ; RFC 850, RFC 1036 废除
Sun Nov 6 08:49:37 1994 ; ANSI C 的 asctime() 格式
/#
The first format is preferred as an Internet standard and represent
s
a fixed-length subset of that defined by RFC 1123 (an update to RF
C
822). The second format is in common use, but is based on the
obsolete RFC 850 [12] date format and lacks a four-digit year.
HTTP/1.1 clients and servers that parse the date value MUST accept
all three formats (for compatibility with HTTP/1.0), though they MU
ST
only generate the RFC 1123 format for representing HTTP-date values
in header fields.
# 第一种格式被推荐作为Internet标准使用,是RFC1123(对RFC822的更新)定义的
固定长度子集.一般使用第二种格式,但是基于废除了的RFC850日期格式并且缺
少
四位数的年份.HTTP/1.1客户和服务器在解析日期值时必须接受所有三种格式
(与HTTP/1.0兼容),但他们必须只能在头域中生成RFC1123格式的HTTP日期值表
示.
/#
Note: Recipients of date values are encouraged to be robust in
accepting date values that may have been sent by non-HTTP
applications, as is sometimes the case when retrieving or posting
messages via proxies/gateways to SMTP or NNTP.
# 注意:日期值的接收者应该更加小心程序在接受日期值时的鲁棒性,因为这些
日期
可能是由非HTTP协议的应用程序发出的,例如当通过代理或网关存取SMTP或
NNTP
的消息时.
/#
All HTTP date/time stamps MUST be represented in Greenwich Mean Tim
e
(GMT), without exception. This is indicated in the first two format
s
by the inclusion of "GMT" as the three-letter abbreviation for time
zone, and MUST be assumed when reading the asctime format.
# 所有的HTTP日期/时间戳必须无意外的用格陵威治标准时间(GMT)表示.前两种
格式
通过在时区位置用"GMT"指出,asctime格式必须默认为GMT时区.
/#
HTTP-date = rfc1123-date | rfc850-date | asctime-date
rfc1123-date = wkday "," SP date1 SP time SP "GMT"
rfc850-date = weekday "," SP date2 SP time SP "GMT"
asctime-date = wkday SP date3 SP time SP 4DIGIT
date1 = 2DIGIT SP month SP 4DIGIT
; day month year (e.g., 02 Jun 1982)
date2 = 2DIGIT "-" month "-" 2DIGIT
; day-month-year (e.g., 02-Jun-82)
date3 = month SP ( 2DIGIT | ( SP 1DIGIT ))
; month day (e.g., Jun 2)
time = 2DIGIT ":" 2DIGIT ":" 2DIGIT
; 00:00:00 - 23:59:59
wkday = "Mon" | "Tue" | "Wed"
| "Thu" | "Fri" | "Sat" | "Sun"
weekday = "Monday" | "Tuesday" | "Wednesday"
| "Thursday" | "Friday" | "Saturday" | "Sunday"
month = "Jan" | "Feb" | "Mar" | "Apr"
| "May" | "Jun" | "Jul" | "Aug"
| "Sep" | "Oct" | "Nov" | "Dec"
# HTTP-date = rfc1123-date | rfc850-date | asctime-date
rfc1123-date = wkday "," SP date1 SP time SP "GMT"
rfc850-date = weekday "," SP date2 SP time SP "GMT"
asctime-date = wkday SP date3 SP time SP 4DIGIT
date1 = 2DIGIT SP month SP 4DIGIT
; 日 月 年 (e.g., 02 Jun 1982)
date2 = 2DIGIT "-" month "-" 2DIGIT
; 日-月-年 (e.g., 02-Jun-82)
date3 = month SP ( 2DIGIT | ( SP 1DIGIT ))
; 月 日 (e.g., Jun 2)
time = 2DIGIT ":" 2DIGIT ":" 2DIGIT
; 00:00:00 - 23:59:59
wkday = "Mon" | "Tue" | "Wed"
| "Thu" | "Fri" | "Sat" | "Sun"
weekday = "Monday" | "Tuesday" | "Wednesday"
| "Thursday" | "Friday" | "Saturday" | "Sunday"
month = "Jan" | "Feb" | "Mar" | "Apr"
| "May" | "Jun" | "Jul" | "Aug"
| "Sep" | "Oct" | "Nov" | "Dec"
/#
Note: HTTP requirements for the date/time stamp format apply only
to their usage within the protocol stream. Clients and servers ar
e
not required to use these formats for user presentation, request
logging, etc.
# 注意:HTTP要求的日期/时间戳仅仅用于协议的数据流中,客户和服务器不被
强制使用
这些格式表示用户数据,请求日志等.
/#
3.3.2 Delta Seconds
#3.3.2 Delta秒 /#
Some HTTP header fields allow a time value to be specified as an
integer number of seconds, represented in decimal, after the time
that the message was received.
delta-seconds = 1*DIGIT
# 一些HTTP头域允许用秒的整数值作为时间值，用十进制表示，在消息收到后给
出。
delta-seconds = 1*DIGIT
/#
--
※ 修改:．kenmlee 于 Jul 8 16:23:48 修改本文．[FROM: 61.140.188.222]
※ 来源:．月光软件站 http://www.moon-soft.com．[FROM: 61.140.188.222]
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