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SDP
Generic URI
ABNF Notation
Session Description
Addressing
generic rules
"a=" SDP Attributes
SDP attributes defined in
RFC 4975 – proposing Message Session Relay Protocol (MSRP)
RFC 4975
–
Section 8.2
–
Section 8.6
a=
accept-types
a=
accept-wrapped-types
a=
max-size
a=
path
attribute
=/
accept-types
/
accept-wrapped-types
/
max-size
/
path
accept-types
=
accept-types-label
"
:
"
format-list
accept-types-label
=
"
accept-types
"
accept-wrapped-types
=
wrapped-types-label
"
:
"
format-list
wrapped-types-label
=
"
accept-wrapped-types
"
format-list
=
format-entry
*(
SP
format-entry
)
format-entry
=
( ( (
type
"
/
"
subtype
) / (
type
"
/
" "
*
" ) ) *( "
;
"
type-param
) ) / ( "
*
" )
type
=
token
subtype
=
token
type-param
=
parm-attribute
"
=
"
parm-value
parm-attribute
=
token
parm-value
=
token
/
quoted‑string
max-size
=
max-size-label
"
:
"
max-size-value
max-size-label
=
"
max-size
"
max-size-value
=
1*(
DIGIT
)
; max size in octets
path
=
path-label
"
:
"
path-list
path-label
=
"
path
"
path-list
=
MSRP-URI
*(
SP
MSRP-URI
> )