; 1998-03-13 OCTET = CHAR = UPALPHA = LOALPHA = ALPHA = UPALPHA | LOALPHA DIGIT = CTL = CR = LF = SP = HT = <"> = CRLF = CR LF LWS = [CRLF] 1*( SP | HT ) TEXT = HEX = "A" | "B" | "C" | "D" | "E" | "F" | "a" | "b" | "c" | "d" | "e" | "f" | DIGIT token = 1* separators = "(" | ")" | "<" | ">" | "@" | "," | ";" | ":" | "\" | <"> | "/" | "[" | "]" | "?" | "=" | "{" | "}" | SP | HT comment = "(" *( ctext | quoted-pair | comment ) ")" text = quoted-string = ( <"> *(qdtext | quoted-pair ) <"> ) qdtext = > quoted-pair = "\" CHAR parameter = attribute "=" value attribute = token value = token | quoted-string HTTP-Version = "HTTP" "/" 1*DIGIT "." 1*DIGIT http_URL = "http:" "//" host [ ":" port ] [ abs_path ] 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 date2 = 2DIGIT "-" month "-" 2DIGIT date3 = month SP ( 2DIGIT | ( SP 1DIGIT )) time = 2DIGIT ":" 2DIGIT ":" 2DIGIT 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" delta-seconds = 1*DIGIT charset = token content-coding = token transfer-coding = "chunked" | transfer-extension transfer-extension = token *( ";" parameter ) Chunked-Body = *chunk last-chunk trailer CRLF chunk = chunk-size [ chunk-extension ] CRLF chunk-data CRLF chunk-size = 1*HEX last-chunk = 1*("0") [ chunk-extension ] CRLF chunk-extension = *( ";" chunk-ext-name [ "=" chunk-ext-val ] ) chunk-ext-name = token chunk-ext-val = token | quoted-string chunk-data = chunk-size(OCTET) trailer = *entity-header media-type = type "/" subtype *( ";" parameter ) type = token subtype = token product = token ["/" product-version] product-version = token qvalue = ( "0" [ "." 0*3DIGIT ] ) | ( "1" [ "." 0*3("0") ] ) language-tag = primary-tag *( "-" subtag ) primary-tag = 1*8ALPHA subtag = 1*8ALPHA entity-tag = [ weak ] opaque-tag weak = "W/" opaque-tag = quoted-string range-unit = bytes-unit | other-range-unit bytes-unit = "bytes" other-range-unit = token HTTP-message = Request | Response generic-message = start-line *message-header CRLF [ message-body ] start-line = Request-Line | Status-Line message-header = field-name ":" [ field-value ] CRLF field-name = token field-value = *( field-content | LWS ) field-content = message-body = entity-body | general-header = Cache-Control | Connection | Date | Pragma | Transfer-Encoding | Upgrade | Trailer | Via Request = Request-Line *( general-header | request-header | entity-header ) CRLF [ message-body ] Request-Line = Method SP Request-URI SP HTTP-Version CRLF Method = "OPTIONS" | "GET" | "HEAD" | "POST" | "PUT" | "DELETE" | "TRACE" | "CONNECT" | extension-method extension-method = token Request-URI = "*" | absoluteURI | abs_path request-header = Accept | Accept-Charset | Accept-Encoding | Accept-Language | Authorization | Expect | From | Host | If-Modified-Since | If-Match | If-None-Match | If-Range | If-Unmodified-Since | Max-Forwards | Proxy-Authorization | Range | Referer | TE | User-Agent Response = Status-Line *( general-header | response-header | entity-header ) CRLF [ message-body ] Status-Line = HTTP-Version SP Status-Code SP Reason-Phrase CRLF Status-Code = "100" ; Continue | "101" ; Switching Protocols | "200" ; OK | "201" ; Created | "202" ; Accepted | "203" ; Non-Authoritative Information | "204" ; No Content | "205" ; Reset Content | "206" ; Partial Content | "300" ; Multiple Choices | "301" ; Moved Permanently | "302" ; Found | "303" ; See Other | "304" ; Not Modified | "305" ; Use Proxy | "307" ; Temporary Redirect | "400" ; Bad Request | "401" ; Unauthorized | "402" ; Payment Required | "403" ; Forbidden | "404" ; Not Found | "405" ; Method Not Allowed | "406" ; Not Acceptable | "407" ; Proxy Authentication Required | "408" ; Request Time-out | "409" ; Conflict | "410" ; Gone | "411" ; Length Required | "412" ; Precondition Failed | "413" ; Request Entity Too Large | "414" ; Request-URI Too Large | "415" ; Unsupported Media Type | "416" ; Requested range not satisfiable | "417" ; Expectation Failed | "500" ; Internal Server Error | "501" ; Not Implemented | "502" ; Bad Gateway | "503" ; Service Unavailable | "504" ; Gateway Time-out | "505" ; HTTP Version not supported | extension-code extension-code = 3DIGIT Reason-Phrase = * response-header = Accept-Ranges | Age | ETag | Location | Proxy-Authenticate | Retry-After | Server | Vary | Warning | WWW-Authenticate entity-header = Allow | Content-Encoding | Content-Language | Content-Length | Content-Location | Content-MD5 | Content-Range | Content-Type | Expires | Last-Modified | extension-header extension-header = message-header entity-body = *OCTET Accept = "Accept" ":" #( media-range [ accept-params ] ) media-range = ( "*/*" | ( type "/" "*" ) | ( type "/" subtype ) ) *( ";" parameter ) accept-params = ";" "q" "=" qvalue *( accept-extension ) accept-extension = ";" token [ "=" ( token | quoted-string ) ] Accept-Charset = "Accept-Charset" ":" 1#( ( charset | "*" )[ ";" "q" "=" qvalue ] ) Accept-Encoding = "Accept-Encoding" ":" 1#( codings [ ";" "q" "=" qvalue ] ) codings = ( content-coding | "*" ) Accept-Language = "Accept-Language" ":" 1#( language-range [ ";" "q" "=" qvalue ] ) language-range = ( ( 1*8ALPHA *( "-" 1*8ALPHA ) ) | "*" ) Accept-Ranges = "Accept-Ranges" ":" acceptable-ranges acceptable-ranges = 1#range-unit | "none" Age = "Age" ":" age-value age-value = delta-seconds Allow = "Allow" ":" #Method Authorization = "Authorization" ":" credentials Cache-Control = "Cache-Control" ":" 1#cache-directive cache-directive = cache-request-directive | cache-response-directive cache-request-directive = "no-cache" | "no-store" | "max-age" "=" delta-seconds | "max-stale" [ "=" delta-seconds ] | "min-fresh" "=" delta-seconds | "no-transform" | "only-if-cached" | cache-extension cache-response-directive = "public" | "private" [ "=" <"> 1#field-name <"> ] | "no-cache" [ "=" <"> 1#field-name <"> ] | "no-store" | "no-transform" | "must-revalidate" | "proxy-revalidate" | "max-age" "=" delta-seconds | "s-maxage" "=" delta-seconds | cache-extension cache-extension = token [ "=" ( token | quoted-string ) ] Connection = "Connection" ":" 1#(connection-token) connection-token = token Content-Encoding = "Content-Encoding" ":" 1#content-coding Content-Language = "Content-Language" ":" 1#language-tag Content-Length = "Content-Length" ":" 1*DIGIT Content-Location = "Content-Location" ":" ( absoluteURI | relativeURI ) Content-MD5 = "Content-MD5" ":" md5-digest md5-digest = Content-Range = "Content-Range" ":" content-range-spec content-range-spec = byte-content-range-spec byte-content-range-spec = bytes-unit SP byte-range-resp-spec "/" ( instance-length | "*" ) byte-range-resp-spec = (first-byte-pos "-" last-byte-pos) | "*" instance-length = 1*DIGIT Content-Type = "Content-Type" ":" media-type Date = "Date" ":" HTTP-date ETag = "ETag" ":" entity-tag Expect = "Expect" ":" 1#expectation expectation = "100-continue" | expectation-extension expectation-extension = token [ "=" ( token | quoted-string ) *expect-params ] expect-params = ";" token [ "=" ( token | quoted-string ) ] Expires = "Expires" ":" HTTP-date From = "From" ":" mailbox Host = "Host" ":" host [ ":" port ] If-Match = "If-Match" ":" ( "*" | 1#entity-tag ) If-None-Match = "If-None-Match" ":" ( "*" | 1#entity-tag ) If-Range = "If-Range" ":" ( entity-tag | HTTP-date ) If-Unmodified-Since = "If-Unmodified-Since" ":" HTTP-date Last-Modified = "Last-Modified" ":" HTTP-date Location = "Location" ":" absoluteURI Max-Forwards = "Max-Forwards" ":" 1*DIGIT Pragma = "Pragma" ":" 1#pragma-directive pragma-directive = "no-cache" | extension-pragma extension-pragma = token [ "=" ( token | quoted-string ) ] Proxy-Authenticate = "Proxy-Authenticate" ":" challenge Proxy-Authorization = "Proxy-Authorization" ":" credentials Range = "Range" ":" ranges-specifier ranges-specifier = byte-ranges-specifier byte-ranges-specifier = bytes-unit "=" byte-range-set byte-range-set = 1#( byte-range-spec | suffix-byte-range-spec ) byte-range-spec = first-byte-pos "-" [last-byte-pos] first-byte-pos = 1*DIGIT last-byte-pos = 1*DIGIT suffix-byte-range-spec = "-" suffix-length suffix-length = 1*DIGIT Referer = "Referer" ":" ( absoluteURI | relativeURI ) Retry-After = "Retry-After" ":" ( HTTP-date | delta-seconds ) Server = "Server" ":" 1*( product | comment ) TE = "TE" ":" #( t-codings ) t-codings = "chunked" | ( transfer-extension [ accept-params ] ) Trailer = "Trailer" ":" 1#field-name Transfer-Encoding = "Transfer-Encoding" ":" 1#transfer-coding Upgrade = "Upgrade" ":" 1#product User-Agent = "User-Agent" ":" 1*( product | comment ) Vary = "Vary" ":" ( "*" | 1#field-name ) Via = "Via" ":" 1#( received-protocol received-by [ comment ] ) received-protocol = [ protocol-name "/" ] protocol-version protocol-name = token protocol-version = token received-by = ( host [ ":" port ] ) | pseudonym pseudonym = token Warning = "Warning" ":" 1#warning-value warning-value = warn-code SP warn-agent SP warn-text [SP warn-date] warn-code = 3DIGIT warn-agent = ( host [ ":" port ] ) | pseudonym warn-text = quoted-string warn-date = <"> HTTP-date <"> WWW-Authenticate = "WWW-Authenticate" ":" 1#challenge ; 1997-11-21 auth-scheme = token auth-param = token "=" ( token | quoted-string ) challenge = auth-scheme 1*SP 1#auth-param realm = "realm" "=" realm-value realm-value = quoted-string basic-credentials = "Basic" SP base64-user-pass base64-user-pass = user-pass = userid ":" password userid = * password = *TEXT digest-challenge = 1#( realm | [ domain ] | nonce | [ opaque ] |[ stale ] | [ algorithm ] | [ digest-required ]) domain = "domain" "=" <"> URI ( 1*SP URI ) <"> nonce = "nonce" "=" nonce-value nonce-value = quoted-string opaque = "opaque" "=" quoted-string stale = "stale" "=" ( "true" | "false" ) algorithm = "algorithm" "=" ( "MD5" | token ) digest-required = "digest-required" "=" ( "true" | "false" ) Authorization = "Authorization" ":" "Digest" digest-response Digest-response = 1#( username | realm | nonce | digest-uri | response | [ digest ] | [ algorithm ] | opaque ) username = "username" "=" username-value username-value = quoted-string digest-uri = "uri" "=" digest-uri-value digest-uri-value = request-uri response = "response" "=" response-digest digest = "digest" "=" entity-digest response-digest = <"> *LHEX <"> entity-digest = <"> *LHEX <"> LHEX = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" | "a" | "b" | "c" | "d" | "e" | "f" AuthenticationInfo = "Authentication-Info" ":" 1#( digest | nextnonce ) nextnonce = "nextnonce" "=" nonce-value digest = "digest" "=" entity-digest