350 lines
		
	
	
		
			10 KiB
		
	
	
	
		
			Factor
		
	
	
			
		
		
	
	
			350 lines
		
	
	
		
			10 KiB
		
	
	
	
		
			Factor
		
	
	
! Copyright (C) 2005, 2010 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors ascii assocs calendar combinators.short-circuit
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destructors fry hashtables http http.client.post-data
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http.parsers io io.crlf io.encodings io.encodings.ascii
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io.encodings.binary io.encodings.iana io.encodings.string
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io.files io.pathnames io.sockets io.sockets.secure io.timeouts
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kernel locals math math.order math.parser mime.types namespaces
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present sequences splitting urls vocabs.loader combinators
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environment ;
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IN: http.client
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ERROR: too-many-redirects ;
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ERROR: invalid-proxy proxy ;
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: success? ( code -- ? ) 200 299 between? ;
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ERROR: download-failed response ;
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: check-response ( response -- response )
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    dup code>> success? [ download-failed ] unless ;
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<PRIVATE
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: authority-uri ( url -- str )
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    [ host>> ] [ port>> number>string ] bi ":" glue ;
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: absolute-uri ( url -- str )
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    clone f >>username f >>password f >>anchor present ;
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: abs-path-uri ( url -- str )
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    relative-url f >>anchor present ;
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: request-uri ( request -- str )
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    {
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        { [ dup proxy-url>> ] [ url>> absolute-uri ] }
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        { [ dup method>> "CONNECT" = ] [ url>> authority-uri ] }
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        [ url>> abs-path-uri ]
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    } cond ;
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: write-request-line ( request -- request )
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    dup
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    [ method>> write bl ]
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    [ request-uri write bl ]
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    [ "HTTP/" write version>> write crlf ]
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    tri ;
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: default-port? ( url -- ? )
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    {
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        [ port>> not ]
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        [ [ port>> ] [ protocol>> protocol-port ] bi = ]
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    } 1|| ;
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: unparse-host ( url -- string )
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    dup default-port? [ host>> ] [
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        [ host>> ] [ port>> number>string ] bi ":" glue
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    ] if ;
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: set-host-header ( request header -- request header )
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    over url>> unparse-host "host" pick set-at ;
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: set-cookie-header ( header cookies -- header )
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    unparse-cookie "cookie" pick set-at ;
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: ?set-basic-auth ( header url name -- header )
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    swap [
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        [ username>> ] [ password>> ] bi 2dup and
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        [ basic-auth swap pick set-at ] [ 3drop ] if
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    ] [ drop ] if* ;
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: write-request-header ( request -- request )
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    dup header>> >hashtable
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    over url>> host>> [ set-host-header ] when
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    over url>> "Authorization" ?set-basic-auth
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    over proxy-url>> "Proxy-Authorization" ?set-basic-auth
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    over post-data>> [ set-post-data-headers ] when*
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    over cookies>> [ set-cookie-header ] unless-empty
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    write-header ;
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: write-request ( request -- )
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    unparse-post-data
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    write-request-line
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    write-request-header
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    binary encode-output
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    write-post-data
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    flush
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    drop ;
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: read-response-line ( response -- response )
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    read-?crlf parse-response-line first3
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    [ >>version ] [ >>code ] [ >>message ] tri* ;
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: detect-encoding ( response -- encoding )
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    [ content-charset>> name>encoding ]
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    [ content-type>> mime-type-encoding ] bi
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    or ;
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: read-response-header ( response -- response )
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    read-header >>header
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    dup "set-cookie" header parse-set-cookie >>cookies
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    dup "content-type" header [
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        parse-content-type
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        [ >>content-type ] [ >>content-charset ] bi*
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        dup detect-encoding >>content-encoding
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    ] when* ;
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: read-response ( -- response )
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    <response>
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    read-response-line
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    read-response-header ;
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DEFER: (with-http-request)
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SYMBOL: redirects
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: redirect-url ( request url -- request )
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    '[ _ >url derive-url ensure-port ] change-url ;
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: redirect? ( response -- ? )
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    code>> 300 399 between? ;
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:: do-redirect ( quot: ( chunk -- ) response -- response )
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    redirects inc
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    redirects get request get redirects>> < [
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        request get clone
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        response "location" header redirect-url
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        response code>> 307 = [ "GET" >>method f >>post-data ] unless
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        quot (with-http-request)
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    ] [ too-many-redirects ] if ; inline recursive
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: read-chunk-size ( -- n )
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    read-crlf ";" split1 drop [ blank? ] trim-tail
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    hex> [ "Bad chunk size" throw ] unless* ;
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: read-chunked ( quot: ( chunk -- ) -- )
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    read-chunk-size dup zero?
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    [ 2drop ] [
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        read [ swap call ] [ drop ] 2bi
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        read-crlf B{ } assert= read-chunked
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    ] if ; inline recursive
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: read-response-body ( quot: ( chunk -- ) response -- )
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    binary decode-input
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    "transfer-encoding" header "chunked" =
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    [ read-chunked ] [ each-block ] if ; inline
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: request-socket-endpoints ( request -- physical logical )
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    [ proxy-url>> ] [ url>> ] bi [ or ] keep ;
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: <request-socket> ( -- stream )
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    request get request-socket-endpoints [ url-addr ] bi@
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    remote-address set ascii <client> local-address set
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    1 minutes over set-timeout ;
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: https-tunnel? ( request -- ? )
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    [ proxy-url>> ] [ url>> protocol>> "https" = ] bi and ;
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: ?copy-proxy-basic-auth ( dst-request src-request -- dst-request )
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    proxy-url>> [ username>> ] [ password>> ] bi 2dup and
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    [ set-proxy-basic-auth ] [ 2drop ] if ;
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: ?https-tunnel ( -- )
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    request get dup https-tunnel? [
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        <request> swap [ url>> >>url ] [ ?copy-proxy-basic-auth ] bi
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        f >>proxy-url "CONNECT" >>method write-request
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        read-response check-response drop send-secure-handshake
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    ] [ drop ] if ;
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! Note: ipv4 addresses are interpreted as subdomains but "work"
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: no-proxy-match? ( host-path no-proxy-path -- ? )
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    dup first empty? [ [ rest ] bi@ ] when
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    [ drop f ] [ tail? ] if-empty ;
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: get-no-proxy-list ( -- list )
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    "no_proxy" get
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    [ "no_proxy" os-env ] unless*
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    [ "NO_PROXY" os-env ] unless* ;
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: no-proxy? ( request -- ? )
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    get-no-proxy-list [
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       [ url>> host>> "." split ] dip "," split
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       [ "." split no-proxy-match? ] with any?
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    ] [ drop f ] if* ;
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: (check-proxy) ( proxy -- ? )
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    {
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        { [ dup URL" " = ] [ drop f ] }
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        { [ dup host>> ] [ drop t ] }
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        [ invalid-proxy ]
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    } cond ;
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: check-proxy ( request proxy -- request' )
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    dup [ (check-proxy) ] [ f ] if*
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    [ drop f ] unless [ clone ] dip >>proxy-url ;
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: get-default-proxy ( request -- default-proxy )
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    url>> protocol>> "https" = [
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        "https.proxy" get
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        [ "https_proxy" os-env ] unless*
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        [ "HTTPS_PROXY" os-env ] unless*
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    ] [
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        "http.proxy" get
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        [ "http_proxy" os-env ] unless*
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        [ "HTTP_PROXY" os-env ] unless*
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    ] if ;
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: misparsed-url? ( url -- url' )
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    [ protocol>> not ] [ host>> not ] [ path>> ]
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    tri and and ;
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: request-url ( url -- url' )
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    dup >url dup misparsed-url? [
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        drop dup url? [ present ] when
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        "http://" prepend >url
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    ] [ nip ] if ensure-port ;
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: ?default-proxy ( request -- request' )
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    dup get-default-proxy
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    over proxy-url>> dup [ request-url ] when 2dup and [
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        pick no-proxy? [ nip ] [ [ request-url ] dip derive-url ] if
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    ] [ nip ] if check-proxy ;
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: (with-http-request) ( request quot: ( chunk -- ) -- response )
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    swap ?default-proxy
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    request [
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        <request-socket> [
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            [
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                [ in>> ] [ out>> ] bi
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                [ ?https-tunnel ] with-streams*
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            ]
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            [
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                out>>
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                [ request get write-request ]
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                with-output-stream*
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            ] [
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                in>> [
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                    read-response dup redirect?
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                    request get redirects>> 0 > and [ t ] [
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                        [ nip response set ]
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                        [ read-response-body ]
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                        [ ]
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                        2tri f
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                    ] if
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                ] with-input-stream*
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            ] tri
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        ] with-disposal
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        [ do-redirect ] [ nip ] if
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    ] with-variable ; inline recursive
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: <client-request> ( url method -- request )
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    <request>
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        swap >>method
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        swap request-url >>url ; inline
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PRIVATE>
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: with-http-request* ( request quot: ( chunk -- ) -- response )
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    [ (with-http-request) ] with-destructors ; inline
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: with-http-request ( request quot: ( chunk -- ) -- response )
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    with-http-request* check-response ; inline
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: http-request* ( request -- response data )
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    BV{ } clone [ '[ _ push-all ] with-http-request* ] keep
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    B{ } like over content-encoding>> decode [ >>body ] keep ;
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: http-request ( request -- response data )
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    http-request* [ check-response ] dip ;
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: <get-request> ( url -- request )
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    "GET" <client-request> ;
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: http-get ( url -- response data )
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    <get-request> http-request ;
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: http-get* ( url -- response data )
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    <get-request> http-request* ;
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: download-name ( url -- name )
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    present file-name "?" split1 drop "/" ?tail drop ;
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: download-to ( url file -- )
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    binary [
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        <get-request> [ write ] with-http-request drop
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    ] with-file-writer ;
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: ?download-to ( url file -- )
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    dup exists? [ 2drop ] [ download-to ] if ;
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: download ( url -- )
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    dup download-name download-to ;
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: <post-request> ( post-data url -- request )
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    "POST" <client-request>
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        swap >>post-data ;
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: http-post ( post-data url -- response data )
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    <post-request> http-request ;
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: http-post* ( post-data url -- response data )
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    <post-request> http-request* ;
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: <put-request> ( post-data url -- request )
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    "PUT" <client-request>
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        swap >>post-data ;
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: http-put ( post-data url -- response data )
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    <put-request> http-request ;
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: http-put* ( post-data url -- response data )
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    <put-request> http-request* ;
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: <delete-request> ( url -- request )
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    "DELETE" <client-request> ;
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: http-delete ( url -- response data )
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    <delete-request> http-request ;
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: http-delete* ( url -- response data )
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    <delete-request> http-request* ;
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: <head-request> ( url -- request )
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    "HEAD" <client-request> ;
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: http-head ( url -- response data )
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    <head-request> http-request ;
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: http-head* ( url -- response data )
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    <head-request> http-request* ;
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: <options-request> ( url -- request )
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    "OPTIONS" <client-request> ;
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: http-options ( url -- response data )
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    <options-request> http-request ;
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: http-options* ( url -- response data )
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    <options-request> http-request* ;
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: <trace-request> ( url -- request )
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    "TRACE" <client-request> ;
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: http-trace ( url -- response data )
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    <trace-request> http-request ;
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: http-trace* ( url -- response data )
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    <trace-request> http-request* ;
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{ "http.client" "debugger" } "http.client.debugger" require-when
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