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SDP attributes defined in

RFC 5547 – Offer/Answer mechanism to enable File Transfer

RFC 5547Section 6

 


attribute  =/
file-selector-attr =
"file-selector"  [ ":"  selector  *( SPselector ) ]
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selector =
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filename-selector =
"name:"  DQUOTEfilename‑stringDQUOTE
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filename-string =
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filename-char =
%x01‑09 /  %x0B‑0C /  %x0E‑21 /  %x23‑24 /  %x26‑FF
; any byte except NUL, CR, LF, double quotes, or percent
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percent-encoded =
"%"  HEXDIGHEXDIG
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filesize-selector =
"size:"  filesize‑value
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filesize-value =
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filetype-selector =
"type:"  type   "/"  subtype   *( ";"  ft‑parameter )
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ft-parameter =
attribute   "="  DQUOTEvalue‑stringDQUOTE
; attribute is defined in   RFC 2045Section 5.1
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value-string =
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hash-selector =
"hash:"  hash‑algorithm  ":"  hash‑value
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hash-algorithm =
token
; see a:fingerprint for the IANA Hash Function Textual Names registry:
; only "sha-1" is currently supported
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hash-value =
2HEXDIG  *( ":"  2HEXDIG )
; each byte in upper-case hex, separated by colons
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file-tr-id-attr =
"file-transfer-id:"  file-tr-id-value
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file‑tr‑id‑value =
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file-disp-attr =
"file-disposition:"  file-disp-value
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file-disp-value =
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file-date-attr =
"file-date:"  date-param  *( SPdate-param )
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date-param =
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c-date-param =
"creation:"  DQUOTEdate‑timeDQUOTE
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m-date-param =
"modification:"  DQUOTEdate‑timeDQUOTE
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r-date-param =
"read:"  DQUOTEdate‑timeDQUOTE
; numeric timezones (+HHMM or -HHMM) must be used
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file-icon-attr =
"file-icon:"  file-icon-value
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file-icon-value =
cid-url
; cid-url defined in   RFC 2392Section 2
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file-range-attr =
"file-range:"  start-offset  "-"  stop-offset
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start-offset =
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stop-offset =
integer /  "*"
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