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ABNF Notation
ABNF for SIP Headers
(20 of 93)
SIP Header — Content-Type
Section 20.15 of RFC 3261
and
ABNF in RFC 3261
Content-Type
=
( "
Content‑Type
" / "
c
" )
HCOLON
media‑type
; example:
;
Content‑Type: application/sdp
media-type
=
m‑type
SLASH
m‑subtype
*(
SEMI
m‑parameter
)
m-type
=
discrete‑type
/
composite‑type
discrete-type
=
"
text
" / "
image
" / "
audio
" / "
video
" / "
application
" /
extension‑token
composite-type
=
"
message
" / "
multipart
" /
extension‑token
extension-token
=
ietf‑token
/
x‑token
ietf-token
=
token
x-token
=
"
x-
"
token
m-subtype
=
extension‑token
/
iana‑token
iana-token
=
token
m-parameter
=
m‑attribute
EQUAL
m‑value
m-attribute
=
token
m-value
=
token
/
quoted‑string