Appendix C. 导入的 ABNF

以下核心规则通过引用纳入, 如 [RFC5234] 的 Appendix B.1 所定义:

ALPHA (字母)
CR (回车)
CRLF (CR LF)
CTL (控制字符)
DIGIT (十进制 0-9)
DQUOTE (双引号)
HEXDIG (十六进制 0-9/A-F/a-f)
HTAB (水平制表符)
LF (换行)
OCTET (任意 8-bit 数据序列)
SP (空格)
VCHAR (任意可见 US-ASCII 字符)

以下规则定义于 [RFC7230]:

BWS           = &lt;BWS, see [RFC7230], Section 3.2.3>
OWS           = &lt;OWS, see [RFC7230], Section 3.2.3>
RWS           = &lt;RWS, see [RFC7230], Section 3.2.3>
URI-reference = &lt;URI-reference, see [RFC7230], Section 2.7>
absolute-URI  = &lt;absolute-URI, see [RFC7230], Section 2.7>
comment       = &lt;comment, see [RFC7230], Section 3.2.6>
field-name    = &lt;field-name, see [RFC7230], Section 3.2>
partial-URI   = &lt;partial-URI, see [RFC7230], Section 2.7>
quoted-string = &lt;quoted-string, see [RFC7230], Section 3.2.6>
token         = &lt;token, see [RFC7230], Section 3.2.6>

以下规则定义于本规范的其他部分:

HTTP-date     = &lt;HTTP-date, see Section 7.1.1.1>
content-coding = &lt;content-coding, see Section 3.1.2.1>
language-range = &lt;language-range, see Section 5.3.1>
language-tag  = &lt;language-tag, see Section 3.1.3.1>
media-type    = &lt;media-type, see Section 3.1.1.1>
method        = &lt;method, see [RFC7230], Section 3.1.1>
product       = &lt;product, see Section 5.5.3>
qvalue        = &lt;qvalue, see Section 5.3.1>