2004/id/draft-frystyk-http-extensions-00.ps

%-12345X@PJL JOB
@PJL SET ECONOMODE = OFF
@PJL ENTER LANGUAGE = POSTSCRIPT 
%!PS-Adobe-3.0
%%Title: Microsoft Word - WD-http-mand…
%%Creator: Windows NT 4.0
%%CreationDate: 16:42 8/7/1998
%%Pages: (atend)
%%BoundingBox: 13 13 599 780
%%LanguageLevel: 2
%%DocumentNeededFonts: (atend)
%%DocumentSuppliedFonts: (atend)
%%EndComments
%%BeginProlog

%%BeginResource: procset NTPSOct95
/NTPSOct95 100 dict dup begin/bd{bind def}bind def/ld{load def}bd/ed{exch def}
bd/a{currentpoint}bd/c/curveto ld/d/dup ld/e/eofill ld/f/fill ld/tr/translate
ld/gr/grestore ld/gs/gsave ld/j/setlinejoin ld/L/lineto ld/M/moveto ld/n
/newpath ld/cp/closepath ld/rm/rmoveto ld/sl/setlinewidth ld/sd/setdash ld/g
/setgray ld/r/setrgbcolor ld/s/stroke ld/t/show ld/aw/awidthshow ld/im
/imagemask ld/MS{moveto show}bd/SF{findfont exch scalefont setfont}bd/SM{cmtx
setmatrix}bd/MF{findfont exch makefont setfont}bd/CM{/cmtx matrix currentmatrix
def}bd/B{M exch dup 0 rlt exch 0 exch rlt neg 0 rlt}bd/CB{B cp eoclip}bd/EA{1
index 0/G0 put 4 string 1 1 4 -1 roll{3 copy neg exch cvs dup 0 71 put cvn 3 -1
roll exch put}for pop}bd/rlt/rlineto ld/L2?/languagelevel where{pop
languagelevel 2 ge}{false}ifelse def end def 
%%EndResource
%%EndProlog
%%BeginSetup
[{0
/languagelevel where{pop languagelevel 2 ge}{false}ifelse
{1 dict dup/JobTimeout 4 -1 roll put setuserparams}
{statusdict/setjobtimeout get exec}ifelse
}stopped cleartomark
[{120
/languagelevel where{pop languagelevel 2 ge}{false}ifelse
{1 dict dup/WaitTimeout 4 -1 roll put setuserparams}
{statusdict/waittimeout 3 -1 roll put}ifelse
}stopped cleartomark
/#copies 1 def
[{
%%BeginFeature: *Resolution 600dpi
 
<< /HWResolution [600 600]>>  setpagedevice
%%EndFeature
} stopped cleartomark
[{
%%BeginFeature: *HPHalftone Enhanced
 
<< /Install {
        currentpagedevice /HWResolution get
        dup 0 get 600 eq exch 1 get 600 eq and
        {/EnhancedColorRendering600} {/EnhancedColorRendering} ifelse
        /ColorRendering findresource setcolorrendering
        /EnhancedHalftone /Halftone findresource sethalftone
        { } settransfer false setstrokeadjust
} >> setpagedevice
currentpagedevice /HWResolution get dup 0 get 600 eq exch 1 get 600 eq and
        { 
                << /PostRenderingEnhance false  >>  setpagedevice       
        }if
/setscreen { 3 {pop} repeat } def
/setcolorscreen { 12 {pop} repeat } def
/sethalftone { pop } def 

%%EndFeature
} stopped cleartomark
[{
%%BeginFeature: *Smoothing True

<< /PostRenderingEnhance true >>  setpagedevice
%%EndFeature
} stopped cleartomark
[{
%%BeginFeature: *MediaType None

    <</DeferredMediaSelection true /MediaType null>> setpagedevice
%%EndFeature
} stopped cleartomark
[{
%%BeginFeature: *PageSize Letter

        <</DeferredMediaSelection true /PageSize [612 792] /ImagingBBox null>> setpagedevice
%%EndFeature
} stopped cleartomark
[{
%%BeginFeature: *Duplex None

        <</Duplex false /Tumble false>> setpagedevice
%%EndFeature
} stopped cleartomark
[{
%%BeginFeature: *OutputBin Seperator
<</OutputType (OPTIONAL OUTBIN 2)>> setpagedevice
%%EndFeature
} stopped cleartomark
[{
%%BeginFeature: *Option1 False

%%EndFeature
} stopped cleartomark
[{
%%BeginFeature: *Option2 False

%%EndFeature
} stopped cleartomark
[{
%%BeginFeature: *Option3 False

%%EndFeature
} stopped cleartomark
[{
%%BeginFeature: *Option4 True

%%EndFeature
} stopped cleartomark
[{
%%BeginFeature: *Option5 MailboxModeSeperator

%%EndFeature
} stopped cleartomark
[{
%%BeginFeature: *VMOption 12Meg

%%EndFeature
} stopped cleartomark
%%EndSetup
NTPSOct95 begin
%%Page: 1 1
NTPSOct95 /PageSV save put
13.238 780.059 translate 72 600 div dup neg scale
0 0 transform .25 add round .25 sub exch .25 add round .25 sub exch itransform translate
%%IncludeFont: Times-Roman
[83 0 0 -83 0 0]/Times-Roman MF
(INTERNET-DRAFT)340 629 MS
(Mandatory)2258 629 MS
(H. Frystyk Nielsen, W3C)3696 629 MS
(draft-frystyk-http-extensions-00)340 727 MS
(P. Leach, Microsoft)3879 727 MS
(Scott Lawrence, Agranat Systems)3421 825 MS
(Expires: February 07, 1999)340 923 MS
(Friday, August 07, 1998)3730 923 MS
(Frystyk et al)340 5831 MS
([Page )4259 5831 MS
(1)4470 5831 MS
(])4512 5831 MS
%%IncludeFont: Times-Bold
[167 0 0 -167 0 0]/Times-Bold MF
(H)1400 1203 MS (T)1530 1203 MS (T)1641 1203 MS (P)1752 1203 MS ( )1845 1203 MS (E)1887 1203 MS (x)1998 1203 MS (t)2082 1203 MS (e)2138 1203 MS (n)2212 1203 MS (s)2305 1203 MS (i)2370 1203 MS (o)2416 1203 MS (n)2500 1203 MS ( )2593 1203 MS (F)2635 1203 MS
(r)2737 1203 MS (a)2811 1203 MS (m)2895 1203 MS (e)3034 1203 MS (w)3108 1203 MS (o)3228 1203 MS (r)3312 1203 MS (k)3386 1203 MS
(f)2333 1399 MS (o)2389 1399 MS (r)2473 1399 MS
(M)1135 1595 MS (a)1293 1595 MS (n)1377 1595 MS (d)1470 1595 MS (a)1563 1595 MS (t)1647 1595 MS (o)1703 1595 MS (r)1787 1595 MS (y)1861 1595 MS ( )1945 1595 MS (a)1987 1595 MS (n)2071 1595 MS (d)2164 1595 MS ( )2257 1595 MS (O)2299 1595 MS (p)2429 1595 MS
(t)2522 1595 MS (i)2578 1595 MS (o)2624 1595 MS (n)2708 1595 MS (a)2801 1595 MS (l)2885 1595 MS ( )2931 1595 MS (E)2973 1595 MS (x)3084 1595 MS (t)3168 1595 MS (e)3224 1595 MS (n)3298 1595 MS (s)3391 1595 MS (i)3456 1595 MS (o)3502 1595 MS (n)3586 1595 MS
(s)3679 1595 MS
[150 0 0 -150 0 0]/Times-Bold MF
(S)340 1899 MS (t)416 1899 MS (a)466 1899 MS (t)541 1899 MS (u)591 1899 MS (s)674 1899 MS ( )732 1899 MS (o)770 1899 MS (f)845 1899 MS ( )895 1899 MS (t)933 1899 MS (h)983 1899 MS (i)1066 1899 MS (s)1108 1899 MS ( )1166 1899 MS (D)1204 1899 MS
(o)1312 1899 MS (c)1387 1899 MS (u)1454 1899 MS (m)1537 1899 MS (e)1662 1899 MS (n)1729 1899 MS (t)1812 1899 MS
[83 0 0 -83 0 0]/Times-Roman MF
(This document is an Internet-Draft. Internet-Drafts are working documents of the Internet Engineering Task Force \(IETF\), its)340 2085 MS
(areas, and its working groups. Note that other groups may also distribute working documents as Internet-Drafts. Internet-)340 2183 MS
(Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other)340 2281 MS
(documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in)340 2379 MS
(progress".)340 2477 MS
(To learn the current status of any Internet-Draft, please check the "1id-abstracts.txt" listing contained in the Internet-Drafts)340 2675 MS
(Shadow Directories on ftp.is.co.za \(Africa\), nic.nordu.net \(Europe\), munnari.oz.au \(Pacific Rim\), ds.internic.net \(US East)340 2773 MS
(Coast\), or ftp.isi.edu \(US West Coast\).)340 2871 MS
(Distribution of this document is unlimited. Please send comments to the <ietf-http-ext@w3.org> mailing list. This list is)340 3069 MS
(archived at "http://lists.w3.org/Archives/Public/ietf-http-ext/".)340 3167 MS
(The contribution of World Wide Web Consortium \(W3C\) staff is part of the W3C HTTP Activity \(see)340 3365 MS
("http://www.w3.org/Protocols/Activity"\).)340 3463 MS
[150 0 0 -150 0 0]/Times-Bold MF
(A)340 3776 MS (b)448 3776 MS (s)531 3776 MS (t)589 3776 MS (r)639 3776 MS (a)706 3776 MS (c)781 3776 MS (t)848 3776 MS
[83 0 0 -83 0 0]/Times-Roman MF
(HTTP is used increasingly in applications that need more facilities than the standard version of the protocol provides, ranging)340 3962 MS
(from distributed authoring, collaboration, and printing, to various remote procedure call mechanisms. This document)340 4060 MS
(proposes the use of a mandatory extension mechanism designed to address the tension between private agreement and public)340 4158 MS
(specification and to accommodate extension of applications such as HTTP clients, servers, and proxies. The proposal)340 4256 MS
(associates each extension with a URI[)340 4354 MS
(2)1599 4354 MS
(], and use a few new RFC 822[)1641 4354 MS
(1)2672 4354 MS
(] style header fields to carry the extension identifier)2714 4354 MS
(and related information between the parties involved in an extended transaction.)340 4452 MS
[150 0 0 -150 0 0]/Times-Bold MF
(T)340 4765 MS (a)426 4765 MS (b)501 4765 MS (l)584 4765 MS (e)626 4765 MS ( )693 4765 MS (o)731 4765 MS (f)806 4765 MS ( )856 4765 MS (C)894 4765 MS (o)1002 4765 MS (n)1077 4765 MS (t)1160 4765 MS (e)1210 4765 MS (n)1277 4765 MS (t)1360 4765 MS
(s)1410 4765 MS
[83 0 0 -83 0 0]/Times-Roman MF
(1. Introduction)340 4901 MS
(.)840 4901 MS (.)861 4901 MS (.)882 4901 MS (.)903 4901 MS (.)924 4901 MS (.)945 4901 MS (.)966 4901 MS (.)987 4901 MS (.)1008 4901 MS (.)1029 4901 MS (.)1050 4901 MS (.)1071 4901 MS (.)1092 4901 MS (.)1113 4901 MS (.)1134 4901 MS (.)1155 4901 MS
(.)1176 4901 MS (.)1197 4901 MS (.)1218 4901 MS (.)1239 4901 MS (.)1260 4901 MS (.)1281 4901 MS (.)1302 4901 MS (.)1323 4901 MS (.)1344 4901 MS (.)1365 4901 MS (.)1386 4901 MS (.)1407 4901 MS (.)1428 4901 MS (.)1449 4901 MS (.)1470 4901 MS (.)1491 4901 MS
(.)1512 4901 MS (.)1533 4901 MS (.)1554 4901 MS (.)1575 4901 MS (.)1596 4901 MS (.)1617 4901 MS (.)1638 4901 MS (.)1659 4901 MS (.)1680 4901 MS (.)1701 4901 MS (.)1722 4901 MS (.)1743 4901 MS (.)1764 4901 MS (.)1785 4901 MS (.)1806 4901 MS (.)1827 4901 MS
(.)1848 4901 MS (.)1869 4901 MS (.)1890 4901 MS (.)1911 4901 MS (.)1932 4901 MS (.)1953 4901 MS (.)1974 4901 MS (.)1995 4901 MS (.)2016 4901 MS (.)2037 4901 MS (.)2058 4901 MS (.)2079 4901 MS (.)2100 4901 MS (.)2121 4901 MS (.)2142 4901 MS (.)2163 4901 MS
(.)2184 4901 MS (.)2205 4901 MS (.)2226 4901 MS (.)2247 4901 MS (.)2268 4901 MS (.)2289 4901 MS (.)2310 4901 MS (.)2331 4901 MS (.)2352 4901 MS (.)2373 4901 MS (.)2394 4901 MS (.)2415 4901 MS (.)2436 4901 MS (.)2457 4901 MS (.)2478 4901 MS (.)2499 4901 MS
(.)2520 4901 MS (.)2541 4901 MS (.)2562 4901 MS (.)2583 4901 MS (.)2604 4901 MS (.)2625 4901 MS (.)2646 4901 MS (.)2667 4901 MS (.)2688 4901 MS (.)2709 4901 MS (.)2730 4901 MS (.)2751 4901 MS (.)2772 4901 MS (.)2793 4901 MS (.)2814 4901 MS (.)2835 4901 MS
(.)2856 4901 MS (.)2877 4901 MS (.)2898 4901 MS (.)2919 4901 MS (.)2940 4901 MS (.)2961 4901 MS (.)2982 4901 MS (.)3003 4901 MS (.)3024 4901 MS (.)3045 4901 MS (.)3066 4901 MS (.)3087 4901 MS (.)3108 4901 MS (.)3129 4901 MS (.)3150 4901 MS (.)3171 4901 MS
(.)3192 4901 MS (.)3213 4901 MS (.)3234 4901 MS (.)3255 4901 MS (.)3276 4901 MS (.)3297 4901 MS (.)3318 4901 MS (.)3339 4901 MS (.)3360 4901 MS (.)3381 4901 MS (.)3402 4901 MS (.)3423 4901 MS (.)3444 4901 MS (.)3465 4901 MS (.)3486 4901 MS (.)3507 4901 MS
(.)3528 4901 MS (.)3549 4901 MS (.)3570 4901 MS (.)3591 4901 MS (.)3612 4901 MS (.)3633 4901 MS (.)3654 4901 MS (.)3675 4901 MS (.)3696 4901 MS (.)3717 4901 MS (.)3738 4901 MS (.)3759 4901 MS (.)3780 4901 MS (.)3801 4901 MS (.)3822 4901 MS (.)3843 4901 MS
(.)3864 4901 MS (.)3885 4901 MS (.)3906 4901 MS (.)3927 4901 MS (.)3948 4901 MS (.)3969 4901 MS (.)3990 4901 MS (.)4011 4901 MS (.)4032 4901 MS (.)4053 4901 MS (.)4074 4901 MS (.)4095 4901 MS (.)4116 4901 MS (.)4137 4901 MS (.)4158 4901 MS (.)4179 4901 MS
(.)4200 4901 MS (.)4221 4901 MS (.)4242 4901 MS (.)4263 4901 MS (.)4284 4901 MS (.)4305 4901 MS (.)4326 4901 MS (.)4347 4901 MS (.)4368 4901 MS (.)4389 4901 MS (.)4410 4901 MS (.)4431 4901 MS (.)4452 4901 MS (.)4473 4901 MS
(2)4498 4901 MS
(2. Notational Conventions)340 4999 MS
(.)1218 4999 MS (.)1239 4999 MS (.)1260 4999 MS (.)1281 4999 MS (.)1302 4999 MS (.)1323 4999 MS (.)1344 4999 MS (.)1365 4999 MS (.)1386 4999 MS (.)1407 4999 MS (.)1428 4999 MS (.)1449 4999 MS (.)1470 4999 MS (.)1491 4999 MS (.)1512 4999 MS (.)1533 4999 MS
(.)1554 4999 MS (.)1575 4999 MS (.)1596 4999 MS (.)1617 4999 MS (.)1638 4999 MS (.)1659 4999 MS (.)1680 4999 MS (.)1701 4999 MS (.)1722 4999 MS (.)1743 4999 MS (.)1764 4999 MS (.)1785 4999 MS (.)1806 4999 MS (.)1827 4999 MS (.)1848 4999 MS (.)1869 4999 MS
(.)1890 4999 MS (.)1911 4999 MS (.)1932 4999 MS (.)1953 4999 MS (.)1974 4999 MS (.)1995 4999 MS (.)2016 4999 MS (.)2037 4999 MS (.)2058 4999 MS (.)2079 4999 MS (.)2100 4999 MS (.)2121 4999 MS (.)2142 4999 MS (.)2163 4999 MS (.)2184 4999 MS (.)2205 4999 MS
(.)2226 4999 MS (.)2247 4999 MS (.)2268 4999 MS (.)2289 4999 MS (.)2310 4999 MS (.)2331 4999 MS (.)2352 4999 MS (.)2373 4999 MS (.)2394 4999 MS (.)2415 4999 MS (.)2436 4999 MS (.)2457 4999 MS (.)2478 4999 MS (.)2499 4999 MS (.)2520 4999 MS (.)2541 4999 MS
(.)2562 4999 MS (.)2583 4999 MS (.)2604 4999 MS (.)2625 4999 MS (.)2646 4999 MS (.)2667 4999 MS (.)2688 4999 MS (.)2709 4999 MS (.)2730 4999 MS (.)2751 4999 MS (.)2772 4999 MS (.)2793 4999 MS (.)2814 4999 MS (.)2835 4999 MS (.)2856 4999 MS (.)2877 4999 MS
(.)2898 4999 MS (.)2919 4999 MS (.)2940 4999 MS (.)2961 4999 MS (.)2982 4999 MS (.)3003 4999 MS (.)3024 4999 MS (.)3045 4999 MS (.)3066 4999 MS (.)3087 4999 MS (.)3108 4999 MS (.)3129 4999 MS (.)3150 4999 MS (.)3171 4999 MS (.)3192 4999 MS (.)3213 4999 MS
(.)3234 4999 MS (.)3255 4999 MS (.)3276 4999 MS (.)3297 4999 MS (.)3318 4999 MS (.)3339 4999 MS (.)3360 4999 MS (.)3381 4999 MS (.)3402 4999 MS (.)3423 4999 MS (.)3444 4999 MS (.)3465 4999 MS (.)3486 4999 MS (.)3507 4999 MS (.)3528 4999 MS (.)3549 4999 MS
(.)3570 4999 MS (.)3591 4999 MS (.)3612 4999 MS (.)3633 4999 MS (.)3654 4999 MS (.)3675 4999 MS (.)3696 4999 MS (.)3717 4999 MS (.)3738 4999 MS (.)3759 4999 MS (.)3780 4999 MS (.)3801 4999 MS (.)3822 4999 MS (.)3843 4999 MS (.)3864 4999 MS (.)3885 4999 MS
(.)3906 4999 MS (.)3927 4999 MS (.)3948 4999 MS (.)3969 4999 MS (.)3990 4999 MS (.)4011 4999 MS (.)4032 4999 MS (.)4053 4999 MS (.)4074 4999 MS (.)4095 4999 MS (.)4116 4999 MS (.)4137 4999 MS (.)4158 4999 MS (.)4179 4999 MS (.)4200 4999 MS (.)4221 4999 MS
(.)4242 4999 MS (.)4263 4999 MS (.)4284 4999 MS (.)4305 4999 MS (.)4326 4999 MS (.)4347 4999 MS (.)4368 4999 MS (.)4389 4999 MS (.)4410 4999 MS (.)4431 4999 MS (.)4452 4999 MS (.)4473 4999 MS
(2)4498 4999 MS
(3. Extension Declarations)340 5097 MS
(.)1197 5097 MS (.)1218 5097 MS (.)1239 5097 MS (.)1260 5097 MS (.)1281 5097 MS (.)1302 5097 MS (.)1323 5097 MS (.)1344 5097 MS (.)1365 5097 MS (.)1386 5097 MS (.)1407 5097 MS (.)1428 5097 MS (.)1449 5097 MS (.)1470 5097 MS (.)1491 5097 MS (.)1512 5097 MS
(.)1533 5097 MS (.)1554 5097 MS (.)1575 5097 MS (.)1596 5097 MS (.)1617 5097 MS (.)1638 5097 MS (.)1659 5097 MS (.)1680 5097 MS (.)1701 5097 MS (.)1722 5097 MS (.)1743 5097 MS (.)1764 5097 MS (.)1785 5097 MS (.)1806 5097 MS (.)1827 5097 MS (.)1848 5097 MS
(.)1869 5097 MS (.)1890 5097 MS (.)1911 5097 MS (.)1932 5097 MS (.)1953 5097 MS (.)1974 5097 MS (.)1995 5097 MS (.)2016 5097 MS (.)2037 5097 MS (.)2058 5097 MS (.)2079 5097 MS (.)2100 5097 MS (.)2121 5097 MS (.)2142 5097 MS (.)2163 5097 MS (.)2184 5097 MS
(.)2205 5097 MS (.)2226 5097 MS (.)2247 5097 MS (.)2268 5097 MS (.)2289 5097 MS (.)2310 5097 MS (.)2331 5097 MS (.)2352 5097 MS (.)2373 5097 MS (.)2394 5097 MS (.)2415 5097 MS (.)2436 5097 MS (.)2457 5097 MS (.)2478 5097 MS (.)2499 5097 MS (.)2520 5097 MS
(.)2541 5097 MS (.)2562 5097 MS (.)2583 5097 MS (.)2604 5097 MS (.)2625 5097 MS (.)2646 5097 MS (.)2667 5097 MS (.)2688 5097 MS (.)2709 5097 MS (.)2730 5097 MS (.)2751 5097 MS (.)2772 5097 MS (.)2793 5097 MS (.)2814 5097 MS (.)2835 5097 MS (.)2856 5097 MS
(.)2877 5097 MS (.)2898 5097 MS (.)2919 5097 MS (.)2940 5097 MS (.)2961 5097 MS (.)2982 5097 MS (.)3003 5097 MS (.)3024 5097 MS (.)3045 5097 MS (.)3066 5097 MS (.)3087 5097 MS (.)3108 5097 MS (.)3129 5097 MS (.)3150 5097 MS (.)3171 5097 MS (.)3192 5097 MS
(.)3213 5097 MS (.)3234 5097 MS (.)3255 5097 MS (.)3276 5097 MS (.)3297 5097 MS (.)3318 5097 MS (.)3339 5097 MS (.)3360 5097 MS (.)3381 5097 MS (.)3402 5097 MS (.)3423 5097 MS (.)3444 5097 MS (.)3465 5097 MS (.)3486 5097 MS (.)3507 5097 MS (.)3528 5097 MS
(.)3549 5097 MS (.)3570 5097 MS (.)3591 5097 MS (.)3612 5097 MS (.)3633 5097 MS (.)3654 5097 MS (.)3675 5097 MS (.)3696 5097 MS (.)3717 5097 MS (.)3738 5097 MS (.)3759 5097 MS (.)3780 5097 MS (.)3801 5097 MS (.)3822 5097 MS (.)3843 5097 MS (.)3864 5097 MS
(.)3885 5097 MS (.)3906 5097 MS (.)3927 5097 MS (.)3948 5097 MS (.)3969 5097 MS (.)3990 5097 MS (.)4011 5097 MS (.)4032 5097 MS (.)4053 5097 MS (.)4074 5097 MS (.)4095 5097 MS (.)4116 5097 MS (.)4137 5097 MS (.)4158 5097 MS (.)4179 5097 MS (.)4200 5097 MS
(.)4221 5097 MS (.)4242 5097 MS (.)4263 5097 MS (.)4284 5097 MS (.)4305 5097 MS (.)4326 5097 MS (.)4347 5097 MS (.)4368 5097 MS (.)4389 5097 MS (.)4410 5097 MS (.)4431 5097 MS (.)4452 5097 MS (.)4473 5097 MS
(3)4498 5097 MS
(3.1)442 5195 MS
( Header Field Prefixes)547 5195 MS
(.)1302 5195 MS (.)1323 5195 MS (.)1344 5195 MS (.)1365 5195 MS (.)1386 5195 MS (.)1407 5195 MS (.)1428 5195 MS (.)1449 5195 MS (.)1470 5195 MS (.)1491 5195 MS (.)1512 5195 MS (.)1533 5195 MS (.)1554 5195 MS (.)1575 5195 MS (.)1596 5195 MS (.)1617 5195 MS
(.)1638 5195 MS (.)1659 5195 MS (.)1680 5195 MS (.)1701 5195 MS (.)1722 5195 MS (.)1743 5195 MS (.)1764 5195 MS (.)1785 5195 MS (.)1806 5195 MS (.)1827 5195 MS (.)1848 5195 MS (.)1869 5195 MS (.)1890 5195 MS (.)1911 5195 MS (.)1932 5195 MS (.)1953 5195 MS
(.)1974 5195 MS (.)1995 5195 MS (.)2016 5195 MS (.)2037 5195 MS (.)2058 5195 MS (.)2079 5195 MS (.)2100 5195 MS (.)2121 5195 MS (.)2142 5195 MS (.)2163 5195 MS (.)2184 5195 MS (.)2205 5195 MS (.)2226 5195 MS (.)2247 5195 MS (.)2268 5195 MS (.)2289 5195 MS
(.)2310 5195 MS (.)2331 5195 MS (.)2352 5195 MS (.)2373 5195 MS (.)2394 5195 MS (.)2415 5195 MS (.)2436 5195 MS (.)2457 5195 MS (.)2478 5195 MS (.)2499 5195 MS (.)2520 5195 MS (.)2541 5195 MS (.)2562 5195 MS (.)2583 5195 MS (.)2604 5195 MS (.)2625 5195 MS
(.)2646 5195 MS (.)2667 5195 MS (.)2688 5195 MS (.)2709 5195 MS (.)2730 5195 MS (.)2751 5195 MS (.)2772 5195 MS (.)2793 5195 MS (.)2814 5195 MS (.)2835 5195 MS (.)2856 5195 MS (.)2877 5195 MS (.)2898 5195 MS (.)2919 5195 MS (.)2940 5195 MS (.)2961 5195 MS
(.)2982 5195 MS (.)3003 5195 MS (.)3024 5195 MS (.)3045 5195 MS (.)3066 5195 MS (.)3087 5195 MS (.)3108 5195 MS (.)3129 5195 MS (.)3150 5195 MS (.)3171 5195 MS (.)3192 5195 MS (.)3213 5195 MS (.)3234 5195 MS (.)3255 5195 MS (.)3276 5195 MS (.)3297 5195 MS
(.)3318 5195 MS (.)3339 5195 MS (.)3360 5195 MS (.)3381 5195 MS (.)3402 5195 MS (.)3423 5195 MS (.)3444 5195 MS (.)3465 5195 MS (.)3486 5195 MS (.)3507 5195 MS (.)3528 5195 MS (.)3549 5195 MS (.)3570 5195 MS (.)3591 5195 MS (.)3612 5195 MS (.)3633 5195 MS
(.)3654 5195 MS (.)3675 5195 MS (.)3696 5195 MS (.)3717 5195 MS (.)3738 5195 MS (.)3759 5195 MS (.)3780 5195 MS (.)3801 5195 MS (.)3822 5195 MS (.)3843 5195 MS (.)3864 5195 MS (.)3885 5195 MS (.)3906 5195 MS (.)3927 5195 MS (.)3948 5195 MS (.)3969 5195 MS
(.)3990 5195 MS (.)4011 5195 MS (.)4032 5195 MS (.)4053 5195 MS (.)4074 5195 MS (.)4095 5195 MS (.)4116 5195 MS (.)4137 5195 MS (.)4158 5195 MS (.)4179 5195 MS (.)4200 5195 MS (.)4221 5195 MS (.)4242 5195 MS (.)4263 5195 MS (.)4284 5195 MS (.)4305 5195 MS
(.)4326 5195 MS (.)4347 5195 MS (.)4368 5195 MS (.)4389 5195 MS (.)4410 5195 MS (.)4431 5195 MS (.)4452 5195 MS (.)4473 5195 MS
(3)4498 5195 MS
(4. Extension Header Fields)340 5293 MS
(.)1260 5293 MS (.)1281 5293 MS (.)1302 5293 MS (.)1323 5293 MS (.)1344 5293 MS (.)1365 5293 MS (.)1386 5293 MS (.)1407 5293 MS (.)1428 5293 MS (.)1449 5293 MS (.)1470 5293 MS (.)1491 5293 MS (.)1512 5293 MS (.)1533 5293 MS (.)1554 5293 MS (.)1575 5293 MS
(.)1596 5293 MS (.)1617 5293 MS (.)1638 5293 MS (.)1659 5293 MS (.)1680 5293 MS (.)1701 5293 MS (.)1722 5293 MS (.)1743 5293 MS (.)1764 5293 MS (.)1785 5293 MS (.)1806 5293 MS (.)1827 5293 MS (.)1848 5293 MS (.)1869 5293 MS (.)1890 5293 MS (.)1911 5293 MS
(.)1932 5293 MS (.)1953 5293 MS (.)1974 5293 MS (.)1995 5293 MS (.)2016 5293 MS (.)2037 5293 MS (.)2058 5293 MS (.)2079 5293 MS (.)2100 5293 MS (.)2121 5293 MS (.)2142 5293 MS (.)2163 5293 MS (.)2184 5293 MS (.)2205 5293 MS (.)2226 5293 MS (.)2247 5293 MS
(.)2268 5293 MS (.)2289 5293 MS (.)2310 5293 MS (.)2331 5293 MS (.)2352 5293 MS (.)2373 5293 MS (.)2394 5293 MS (.)2415 5293 MS (.)2436 5293 MS (.)2457 5293 MS (.)2478 5293 MS (.)2499 5293 MS (.)2520 5293 MS (.)2541 5293 MS (.)2562 5293 MS (.)2583 5293 MS
(.)2604 5293 MS (.)2625 5293 MS (.)2646 5293 MS (.)2667 5293 MS (.)2688 5293 MS (.)2709 5293 MS (.)2730 5293 MS (.)2751 5293 MS (.)2772 5293 MS (.)2793 5293 MS (.)2814 5293 MS (.)2835 5293 MS (.)2856 5293 MS (.)2877 5293 MS (.)2898 5293 MS (.)2919 5293 MS
(.)2940 5293 MS (.)2961 5293 MS (.)2982 5293 MS (.)3003 5293 MS (.)3024 5293 MS (.)3045 5293 MS (.)3066 5293 MS (.)3087 5293 MS (.)3108 5293 MS (.)3129 5293 MS (.)3150 5293 MS (.)3171 5293 MS (.)3192 5293 MS (.)3213 5293 MS (.)3234 5293 MS (.)3255 5293 MS
(.)3276 5293 MS (.)3297 5293 MS (.)3318 5293 MS (.)3339 5293 MS (.)3360 5293 MS (.)3381 5293 MS (.)3402 5293 MS (.)3423 5293 MS (.)3444 5293 MS (.)3465 5293 MS (.)3486 5293 MS (.)3507 5293 MS (.)3528 5293 MS (.)3549 5293 MS (.)3570 5293 MS (.)3591 5293 MS
(.)3612 5293 MS (.)3633 5293 MS (.)3654 5293 MS (.)3675 5293 MS (.)3696 5293 MS (.)3717 5293 MS (.)3738 5293 MS (.)3759 5293 MS (.)3780 5293 MS (.)3801 5293 MS (.)3822 5293 MS (.)3843 5293 MS (.)3864 5293 MS (.)3885 5293 MS (.)3906 5293 MS (.)3927 5293 MS
(.)3948 5293 MS (.)3969 5293 MS (.)3990 5293 MS (.)4011 5293 MS (.)4032 5293 MS (.)4053 5293 MS (.)4074 5293 MS (.)4095 5293 MS (.)4116 5293 MS (.)4137 5293 MS (.)4158 5293 MS (.)4179 5293 MS (.)4200 5293 MS (.)4221 5293 MS (.)4242 5293 MS (.)4263 5293 MS
(.)4284 5293 MS (.)4305 5293 MS (.)4326 5293 MS (.)4347 5293 MS (.)4368 5293 MS (.)4389 5293 MS (.)4410 5293 MS (.)4431 5293 MS (.)4452 5293 MS (.)4473 5293 MS
(4)4498 5293 MS
(4.1 End-to-End Extensions)442 5391 MS
(.)1344 5391 MS (.)1365 5391 MS (.)1386 5391 MS (.)1407 5391 MS (.)1428 5391 MS (.)1449 5391 MS (.)1470 5391 MS (.)1491 5391 MS (.)1512 5391 MS (.)1533 5391 MS (.)1554 5391 MS (.)1575 5391 MS (.)1596 5391 MS (.)1617 5391 MS (.)1638 5391 MS (.)1659 5391 MS
(.)1680 5391 MS (.)1701 5391 MS (.)1722 5391 MS (.)1743 5391 MS (.)1764 5391 MS (.)1785 5391 MS (.)1806 5391 MS (.)1827 5391 MS (.)1848 5391 MS (.)1869 5391 MS (.)1890 5391 MS (.)1911 5391 MS (.)1932 5391 MS (.)1953 5391 MS (.)1974 5391 MS (.)1995 5391 MS
(.)2016 5391 MS (.)2037 5391 MS (.)2058 5391 MS (.)2079 5391 MS (.)2100 5391 MS (.)2121 5391 MS (.)2142 5391 MS (.)2163 5391 MS (.)2184 5391 MS (.)2205 5391 MS (.)2226 5391 MS (.)2247 5391 MS (.)2268 5391 MS (.)2289 5391 MS (.)2310 5391 MS (.)2331 5391 MS
(.)2352 5391 MS (.)2373 5391 MS (.)2394 5391 MS (.)2415 5391 MS (.)2436 5391 MS (.)2457 5391 MS (.)2478 5391 MS (.)2499 5391 MS (.)2520 5391 MS (.)2541 5391 MS (.)2562 5391 MS (.)2583 5391 MS (.)2604 5391 MS (.)2625 5391 MS (.)2646 5391 MS (.)2667 5391 MS
(.)2688 5391 MS (.)2709 5391 MS (.)2730 5391 MS (.)2751 5391 MS (.)2772 5391 MS (.)2793 5391 MS (.)2814 5391 MS (.)2835 5391 MS (.)2856 5391 MS (.)2877 5391 MS (.)2898 5391 MS (.)2919 5391 MS (.)2940 5391 MS (.)2961 5391 MS (.)2982 5391 MS (.)3003 5391 MS
(.)3024 5391 MS (.)3045 5391 MS (.)3066 5391 MS (.)3087 5391 MS (.)3108 5391 MS (.)3129 5391 MS (.)3150 5391 MS (.)3171 5391 MS (.)3192 5391 MS (.)3213 5391 MS (.)3234 5391 MS (.)3255 5391 MS (.)3276 5391 MS (.)3297 5391 MS (.)3318 5391 MS (.)3339 5391 MS
(.)3360 5391 MS (.)3381 5391 MS (.)3402 5391 MS (.)3423 5391 MS (.)3444 5391 MS (.)3465 5391 MS (.)3486 5391 MS (.)3507 5391 MS (.)3528 5391 MS (.)3549 5391 MS (.)3570 5391 MS (.)3591 5391 MS (.)3612 5391 MS (.)3633 5391 MS (.)3654 5391 MS (.)3675 5391 MS
(.)3696 5391 MS (.)3717 5391 MS (.)3738 5391 MS (.)3759 5391 MS (.)3780 5391 MS (.)3801 5391 MS (.)3822 5391 MS (.)3843 5391 MS (.)3864 5391 MS (.)3885 5391 MS (.)3906 5391 MS (.)3927 5391 MS (.)3948 5391 MS (.)3969 5391 MS (.)3990 5391 MS (.)4011 5391 MS
(.)4032 5391 MS (.)4053 5391 MS (.)4074 5391 MS (.)4095 5391 MS (.)4116 5391 MS (.)4137 5391 MS (.)4158 5391 MS (.)4179 5391 MS (.)4200 5391 MS (.)4221 5391 MS (.)4242 5391 MS (.)4263 5391 MS (.)4284 5391 MS (.)4305 5391 MS (.)4326 5391 MS (.)4347 5391 MS
(.)4368 5391 MS (.)4389 5391 MS (.)4410 5391 MS (.)4431 5391 MS (.)4452 5391 MS (.)4473 5391 MS
(4)4498 5391 MS
(4.2 Hop-by-Hop Extensions)442 5489 MS
(.)1386 5489 MS (.)1407 5489 MS (.)1428 5489 MS (.)1449 5489 MS (.)1470 5489 MS (.)1491 5489 MS (.)1512 5489 MS (.)1533 5489 MS (.)1554 5489 MS (.)1575 5489 MS (.)1596 5489 MS (.)1617 5489 MS (.)1638 5489 MS (.)1659 5489 MS (.)1680 5489 MS (.)1701 5489 MS
(.)1722 5489 MS (.)1743 5489 MS (.)1764 5489 MS (.)1785 5489 MS (.)1806 5489 MS (.)1827 5489 MS (.)1848 5489 MS (.)1869 5489 MS (.)1890 5489 MS (.)1911 5489 MS (.)1932 5489 MS (.)1953 5489 MS (.)1974 5489 MS (.)1995 5489 MS (.)2016 5489 MS (.)2037 5489 MS
(.)2058 5489 MS (.)2079 5489 MS (.)2100 5489 MS (.)2121 5489 MS (.)2142 5489 MS (.)2163 5489 MS (.)2184 5489 MS (.)2205 5489 MS (.)2226 5489 MS (.)2247 5489 MS (.)2268 5489 MS (.)2289 5489 MS (.)2310 5489 MS (.)2331 5489 MS (.)2352 5489 MS (.)2373 5489 MS
(.)2394 5489 MS (.)2415 5489 MS (.)2436 5489 MS (.)2457 5489 MS (.)2478 5489 MS (.)2499 5489 MS (.)2520 5489 MS (.)2541 5489 MS (.)2562 5489 MS (.)2583 5489 MS (.)2604 5489 MS (.)2625 5489 MS (.)2646 5489 MS (.)2667 5489 MS (.)2688 5489 MS (.)2709 5489 MS
(.)2730 5489 MS (.)2751 5489 MS (.)2772 5489 MS (.)2793 5489 MS (.)2814 5489 MS (.)2835 5489 MS (.)2856 5489 MS (.)2877 5489 MS (.)2898 5489 MS (.)2919 5489 MS (.)2940 5489 MS (.)2961 5489 MS (.)2982 5489 MS (.)3003 5489 MS (.)3024 5489 MS (.)3045 5489 MS
(.)3066 5489 MS (.)3087 5489 MS (.)3108 5489 MS (.)3129 5489 MS (.)3150 5489 MS (.)3171 5489 MS (.)3192 5489 MS (.)3213 5489 MS (.)3234 5489 MS (.)3255 5489 MS (.)3276 5489 MS (.)3297 5489 MS (.)3318 5489 MS (.)3339 5489 MS (.)3360 5489 MS (.)3381 5489 MS
(.)3402 5489 MS (.)3423 5489 MS (.)3444 5489 MS (.)3465 5489 MS (.)3486 5489 MS (.)3507 5489 MS (.)3528 5489 MS (.)3549 5489 MS (.)3570 5489 MS (.)3591 5489 MS (.)3612 5489 MS (.)3633 5489 MS (.)3654 5489 MS (.)3675 5489 MS (.)3696 5489 MS (.)3717 5489 MS
(.)3738 5489 MS (.)3759 5489 MS (.)3780 5489 MS (.)3801 5489 MS (.)3822 5489 MS (.)3843 5489 MS (.)3864 5489 MS (.)3885 5489 MS (.)3906 5489 MS (.)3927 5489 MS (.)3948 5489 MS (.)3969 5489 MS (.)3990 5489 MS (.)4011 5489 MS (.)4032 5489 MS (.)4053 5489 MS
(.)4074 5489 MS (.)4095 5489 MS (.)4116 5489 MS (.)4137 5489 MS (.)4158 5489 MS (.)4179 5489 MS (.)4200 5489 MS (.)4221 5489 MS (.)4242 5489 MS (.)4263 5489 MS (.)4284 5489 MS (.)4305 5489 MS (.)4326 5489 MS (.)4347 5489 MS (.)4368 5489 MS (.)4389 5489 MS
(.)4410 5489 MS (.)4431 5489 MS (.)4452 5489 MS (.)4473 5489 MS
(5)4498 5489 MS
(5. Mandatory HTTP Requests)340 5587 MS
(.)1344 5587 MS (.)1365 5587 MS (.)1386 5587 MS (.)1407 5587 MS (.)1428 5587 MS (.)1449 5587 MS (.)1470 5587 MS (.)1491 5587 MS (.)1512 5587 MS (.)1533 5587 MS (.)1554 5587 MS (.)1575 5587 MS (.)1596 5587 MS (.)1617 5587 MS (.)1638 5587 MS (.)1659 5587 MS
(.)1680 5587 MS (.)1701 5587 MS (.)1722 5587 MS (.)1743 5587 MS (.)1764 5587 MS (.)1785 5587 MS (.)1806 5587 MS (.)1827 5587 MS (.)1848 5587 MS (.)1869 5587 MS (.)1890 5587 MS (.)1911 5587 MS (.)1932 5587 MS (.)1953 5587 MS (.)1974 5587 MS (.)1995 5587 MS
(.)2016 5587 MS (.)2037 5587 MS (.)2058 5587 MS (.)2079 5587 MS (.)2100 5587 MS (.)2121 5587 MS (.)2142 5587 MS (.)2163 5587 MS (.)2184 5587 MS (.)2205 5587 MS (.)2226 5587 MS (.)2247 5587 MS (.)2268 5587 MS (.)2289 5587 MS (.)2310 5587 MS (.)2331 5587 MS
(.)2352 5587 MS (.)2373 5587 MS (.)2394 5587 MS (.)2415 5587 MS (.)2436 5587 MS (.)2457 5587 MS (.)2478 5587 MS (.)2499 5587 MS (.)2520 5587 MS (.)2541 5587 MS (.)2562 5587 MS (.)2583 5587 MS (.)2604 5587 MS (.)2625 5587 MS (.)2646 5587 MS (.)2667 5587 MS
(.)2688 5587 MS (.)2709 5587 MS (.)2730 5587 MS (.)2751 5587 MS (.)2772 5587 MS (.)2793 5587 MS (.)2814 5587 MS (.)2835 5587 MS (.)2856 5587 MS (.)2877 5587 MS (.)2898 5587 MS (.)2919 5587 MS (.)2940 5587 MS (.)2961 5587 MS (.)2982 5587 MS (.)3003 5587 MS
(.)3024 5587 MS (.)3045 5587 MS (.)3066 5587 MS (.)3087 5587 MS (.)3108 5587 MS (.)3129 5587 MS (.)3150 5587 MS (.)3171 5587 MS (.)3192 5587 MS (.)3213 5587 MS (.)3234 5587 MS (.)3255 5587 MS (.)3276 5587 MS (.)3297 5587 MS (.)3318 5587 MS (.)3339 5587 MS
(.)3360 5587 MS (.)3381 5587 MS (.)3402 5587 MS (.)3423 5587 MS (.)3444 5587 MS (.)3465 5587 MS (.)3486 5587 MS (.)3507 5587 MS (.)3528 5587 MS (.)3549 5587 MS (.)3570 5587 MS (.)3591 5587 MS (.)3612 5587 MS (.)3633 5587 MS (.)3654 5587 MS (.)3675 5587 MS
(.)3696 5587 MS (.)3717 5587 MS (.)3738 5587 MS (.)3759 5587 MS (.)3780 5587 MS (.)3801 5587 MS (.)3822 5587 MS (.)3843 5587 MS (.)3864 5587 MS (.)3885 5587 MS (.)3906 5587 MS (.)3927 5587 MS (.)3948 5587 MS (.)3969 5587 MS (.)3990 5587 MS (.)4011 5587 MS
(.)4032 5587 MS (.)4053 5587 MS (.)4074 5587 MS (.)4095 5587 MS (.)4116 5587 MS (.)4137 5587 MS (.)4158 5587 MS (.)4179 5587 MS (.)4200 5587 MS (.)4221 5587 MS (.)4242 5587 MS (.)4263 5587 MS (.)4284 5587 MS (.)4305 5587 MS (.)4326 5587 MS (.)4347 5587 MS
(.)4368 5587 MS (.)4389 5587 MS (.)4410 5587 MS (.)4431 5587 MS (.)4452 5587 MS (.)4473 5587 MS
(5)4498 5587 MS
showpage
%%Page: 2 2
13.238 780.059 translate 72 600 div dup neg scale
0 0 transform .25 add round .25 sub exch .25 add round .25 sub exch itransform translate
[83 0 0 -83 0 0]/Times-Roman MF
(INTERNET-DRAFT)340 629 MS
(Mandatory)2258 629 MS
(Friday, August 07, 1998)3730 629 MS
(Frystyk, et al)340 5831 MS
([Page )4259 5831 MS
(2)4470 5831 MS
(])4512 5831 MS
(6. Mandatory HTTP Responses)340 777 MS
(.)1407 777 MS (.)1428 777 MS (.)1449 777 MS (.)1470 777 MS (.)1491 777 MS (.)1512 777 MS (.)1533 777 MS (.)1554 777 MS (.)1575 777 MS (.)1596 777 MS (.)1617 777 MS (.)1638 777 MS (.)1659 777 MS (.)1680 777 MS (.)1701 777 MS (.)1722 777 MS
(.)1743 777 MS (.)1764 777 MS (.)1785 777 MS (.)1806 777 MS (.)1827 777 MS (.)1848 777 MS (.)1869 777 MS (.)1890 777 MS (.)1911 777 MS (.)1932 777 MS (.)1953 777 MS (.)1974 777 MS (.)1995 777 MS (.)2016 777 MS (.)2037 777 MS (.)2058 777 MS
(.)2079 777 MS (.)2100 777 MS (.)2121 777 MS (.)2142 777 MS (.)2163 777 MS (.)2184 777 MS (.)2205 777 MS (.)2226 777 MS (.)2247 777 MS (.)2268 777 MS (.)2289 777 MS (.)2310 777 MS (.)2331 777 MS (.)2352 777 MS (.)2373 777 MS (.)2394 777 MS
(.)2415 777 MS (.)2436 777 MS (.)2457 777 MS (.)2478 777 MS (.)2499 777 MS (.)2520 777 MS (.)2541 777 MS (.)2562 777 MS (.)2583 777 MS (.)2604 777 MS (.)2625 777 MS (.)2646 777 MS (.)2667 777 MS (.)2688 777 MS (.)2709 777 MS (.)2730 777 MS
(.)2751 777 MS (.)2772 777 MS (.)2793 777 MS (.)2814 777 MS (.)2835 777 MS (.)2856 777 MS (.)2877 777 MS (.)2898 777 MS (.)2919 777 MS (.)2940 777 MS (.)2961 777 MS (.)2982 777 MS (.)3003 777 MS (.)3024 777 MS (.)3045 777 MS (.)3066 777 MS
(.)3087 777 MS (.)3108 777 MS (.)3129 777 MS (.)3150 777 MS (.)3171 777 MS (.)3192 777 MS (.)3213 777 MS (.)3234 777 MS (.)3255 777 MS (.)3276 777 MS (.)3297 777 MS (.)3318 777 MS (.)3339 777 MS (.)3360 777 MS (.)3381 777 MS (.)3402 777 MS
(.)3423 777 MS (.)3444 777 MS (.)3465 777 MS (.)3486 777 MS (.)3507 777 MS (.)3528 777 MS (.)3549 777 MS (.)3570 777 MS (.)3591 777 MS (.)3612 777 MS (.)3633 777 MS (.)3654 777 MS (.)3675 777 MS (.)3696 777 MS (.)3717 777 MS (.)3738 777 MS
(.)3759 777 MS (.)3780 777 MS (.)3801 777 MS (.)3822 777 MS (.)3843 777 MS (.)3864 777 MS (.)3885 777 MS (.)3906 777 MS (.)3927 777 MS (.)3948 777 MS (.)3969 777 MS (.)3990 777 MS (.)4011 777 MS (.)4032 777 MS (.)4053 777 MS (.)4074 777 MS
(.)4095 777 MS (.)4116 777 MS (.)4137 777 MS (.)4158 777 MS (.)4179 777 MS (.)4200 777 MS (.)4221 777 MS (.)4242 777 MS (.)4263 777 MS (.)4284 777 MS (.)4305 777 MS (.)4326 777 MS (.)4347 777 MS (.)4368 777 MS (.)4389 777 MS (.)4410 777 MS
(.)4431 777 MS (.)4452 777 MS (.)4473 777 MS
(6)4498 777 MS
(7. 102 Extended)340 875 MS
(.)903 875 MS (.)924 875 MS (.)945 875 MS (.)966 875 MS (.)987 875 MS (.)1008 875 MS (.)1029 875 MS (.)1050 875 MS (.)1071 875 MS (.)1092 875 MS (.)1113 875 MS (.)1134 875 MS (.)1155 875 MS (.)1176 875 MS (.)1197 875 MS (.)1218 875 MS
(.)1239 875 MS (.)1260 875 MS (.)1281 875 MS (.)1302 875 MS (.)1323 875 MS (.)1344 875 MS (.)1365 875 MS (.)1386 875 MS (.)1407 875 MS (.)1428 875 MS (.)1449 875 MS (.)1470 875 MS (.)1491 875 MS (.)1512 875 MS (.)1533 875 MS (.)1554 875 MS
(.)1575 875 MS (.)1596 875 MS (.)1617 875 MS (.)1638 875 MS (.)1659 875 MS (.)1680 875 MS (.)1701 875 MS (.)1722 875 MS (.)1743 875 MS (.)1764 875 MS (.)1785 875 MS (.)1806 875 MS (.)1827 875 MS (.)1848 875 MS (.)1869 875 MS (.)1890 875 MS
(.)1911 875 MS (.)1932 875 MS (.)1953 875 MS (.)1974 875 MS (.)1995 875 MS (.)2016 875 MS (.)2037 875 MS (.)2058 875 MS (.)2079 875 MS (.)2100 875 MS (.)2121 875 MS (.)2142 875 MS (.)2163 875 MS (.)2184 875 MS (.)2205 875 MS (.)2226 875 MS
(.)2247 875 MS (.)2268 875 MS (.)2289 875 MS (.)2310 875 MS (.)2331 875 MS (.)2352 875 MS (.)2373 875 MS (.)2394 875 MS (.)2415 875 MS (.)2436 875 MS (.)2457 875 MS (.)2478 875 MS (.)2499 875 MS (.)2520 875 MS (.)2541 875 MS (.)2562 875 MS
(.)2583 875 MS (.)2604 875 MS (.)2625 875 MS (.)2646 875 MS (.)2667 875 MS (.)2688 875 MS (.)2709 875 MS (.)2730 875 MS (.)2751 875 MS (.)2772 875 MS (.)2793 875 MS (.)2814 875 MS (.)2835 875 MS (.)2856 875 MS (.)2877 875 MS (.)2898 875 MS
(.)2919 875 MS (.)2940 875 MS (.)2961 875 MS (.)2982 875 MS (.)3003 875 MS (.)3024 875 MS (.)3045 875 MS (.)3066 875 MS (.)3087 875 MS (.)3108 875 MS (.)3129 875 MS (.)3150 875 MS (.)3171 875 MS (.)3192 875 MS (.)3213 875 MS (.)3234 875 MS
(.)3255 875 MS (.)3276 875 MS (.)3297 875 MS (.)3318 875 MS (.)3339 875 MS (.)3360 875 MS (.)3381 875 MS (.)3402 875 MS (.)3423 875 MS (.)3444 875 MS (.)3465 875 MS (.)3486 875 MS (.)3507 875 MS (.)3528 875 MS (.)3549 875 MS (.)3570 875 MS
(.)3591 875 MS (.)3612 875 MS (.)3633 875 MS (.)3654 875 MS (.)3675 875 MS (.)3696 875 MS (.)3717 875 MS (.)3738 875 MS (.)3759 875 MS (.)3780 875 MS (.)3801 875 MS (.)3822 875 MS (.)3843 875 MS (.)3864 875 MS (.)3885 875 MS (.)3906 875 MS
(.)3927 875 MS (.)3948 875 MS (.)3969 875 MS (.)3990 875 MS (.)4011 875 MS (.)4032 875 MS (.)4053 875 MS (.)4074 875 MS (.)4095 875 MS (.)4116 875 MS (.)4137 875 MS (.)4158 875 MS (.)4179 875 MS (.)4200 875 MS (.)4221 875 MS (.)4242 875 MS
(.)4263 875 MS (.)4284 875 MS (.)4305 875 MS (.)4326 875 MS (.)4347 875 MS (.)4368 875 MS (.)4389 875 MS (.)4410 875 MS (.)4431 875 MS (.)4452 875 MS (.)4473 875 MS
(6)4498 875 MS
(8. 510 Not Extended)340 973 MS
(.)1050 973 MS (.)1071 973 MS (.)1092 973 MS (.)1113 973 MS (.)1134 973 MS (.)1155 973 MS (.)1176 973 MS (.)1197 973 MS (.)1218 973 MS (.)1239 973 MS (.)1260 973 MS (.)1281 973 MS (.)1302 973 MS (.)1323 973 MS (.)1344 973 MS (.)1365 973 MS
(.)1386 973 MS (.)1407 973 MS (.)1428 973 MS (.)1449 973 MS (.)1470 973 MS (.)1491 973 MS (.)1512 973 MS (.)1533 973 MS (.)1554 973 MS (.)1575 973 MS (.)1596 973 MS (.)1617 973 MS (.)1638 973 MS (.)1659 973 MS (.)1680 973 MS (.)1701 973 MS
(.)1722 973 MS (.)1743 973 MS (.)1764 973 MS (.)1785 973 MS (.)1806 973 MS (.)1827 973 MS (.)1848 973 MS (.)1869 973 MS (.)1890 973 MS (.)1911 973 MS (.)1932 973 MS (.)1953 973 MS (.)1974 973 MS (.)1995 973 MS (.)2016 973 MS (.)2037 973 MS
(.)2058 973 MS (.)2079 973 MS (.)2100 973 MS (.)2121 973 MS (.)2142 973 MS (.)2163 973 MS (.)2184 973 MS (.)2205 973 MS (.)2226 973 MS (.)2247 973 MS (.)2268 973 MS (.)2289 973 MS (.)2310 973 MS (.)2331 973 MS (.)2352 973 MS (.)2373 973 MS
(.)2394 973 MS (.)2415 973 MS (.)2436 973 MS (.)2457 973 MS (.)2478 973 MS (.)2499 973 MS (.)2520 973 MS (.)2541 973 MS (.)2562 973 MS (.)2583 973 MS (.)2604 973 MS (.)2625 973 MS (.)2646 973 MS (.)2667 973 MS (.)2688 973 MS (.)2709 973 MS
(.)2730 973 MS (.)2751 973 MS (.)2772 973 MS (.)2793 973 MS (.)2814 973 MS (.)2835 973 MS (.)2856 973 MS (.)2877 973 MS (.)2898 973 MS (.)2919 973 MS (.)2940 973 MS (.)2961 973 MS (.)2982 973 MS (.)3003 973 MS (.)3024 973 MS (.)3045 973 MS
(.)3066 973 MS (.)3087 973 MS (.)3108 973 MS (.)3129 973 MS (.)3150 973 MS (.)3171 973 MS (.)3192 973 MS (.)3213 973 MS (.)3234 973 MS (.)3255 973 MS (.)3276 973 MS (.)3297 973 MS (.)3318 973 MS (.)3339 973 MS (.)3360 973 MS (.)3381 973 MS
(.)3402 973 MS (.)3423 973 MS (.)3444 973 MS (.)3465 973 MS (.)3486 973 MS (.)3507 973 MS (.)3528 973 MS (.)3549 973 MS (.)3570 973 MS (.)3591 973 MS (.)3612 973 MS (.)3633 973 MS (.)3654 973 MS (.)3675 973 MS (.)3696 973 MS (.)3717 973 MS
(.)3738 973 MS (.)3759 973 MS (.)3780 973 MS (.)3801 973 MS (.)3822 973 MS (.)3843 973 MS (.)3864 973 MS (.)3885 973 MS (.)3906 973 MS (.)3927 973 MS (.)3948 973 MS (.)3969 973 MS (.)3990 973 MS (.)4011 973 MS (.)4032 973 MS (.)4053 973 MS
(.)4074 973 MS (.)4095 973 MS (.)4116 973 MS (.)4137 973 MS (.)4158 973 MS (.)4179 973 MS (.)4200 973 MS (.)4221 973 MS (.)4242 973 MS (.)4263 973 MS (.)4284 973 MS (.)4305 973 MS (.)4326 973 MS (.)4347 973 MS (.)4368 973 MS (.)4389 973 MS
(.)4410 973 MS (.)4431 973 MS (.)4452 973 MS (.)4473 973 MS
(6)4498 973 MS
(9. Publishing an Extension)340 1071 MS
(.)1239 1071 MS (.)1260 1071 MS (.)1281 1071 MS (.)1302 1071 MS (.)1323 1071 MS (.)1344 1071 MS (.)1365 1071 MS (.)1386 1071 MS (.)1407 1071 MS (.)1428 1071 MS (.)1449 1071 MS (.)1470 1071 MS (.)1491 1071 MS (.)1512 1071 MS (.)1533 1071 MS (.)1554 1071 MS
(.)1575 1071 MS (.)1596 1071 MS (.)1617 1071 MS (.)1638 1071 MS (.)1659 1071 MS (.)1680 1071 MS (.)1701 1071 MS (.)1722 1071 MS (.)1743 1071 MS (.)1764 1071 MS (.)1785 1071 MS (.)1806 1071 MS (.)1827 1071 MS (.)1848 1071 MS (.)1869 1071 MS (.)1890 1071 MS
(.)1911 1071 MS (.)1932 1071 MS (.)1953 1071 MS (.)1974 1071 MS (.)1995 1071 MS (.)2016 1071 MS (.)2037 1071 MS (.)2058 1071 MS (.)2079 1071 MS (.)2100 1071 MS (.)2121 1071 MS (.)2142 1071 MS (.)2163 1071 MS (.)2184 1071 MS (.)2205 1071 MS (.)2226 1071 MS
(.)2247 1071 MS (.)2268 1071 MS (.)2289 1071 MS (.)2310 1071 MS (.)2331 1071 MS (.)2352 1071 MS (.)2373 1071 MS (.)2394 1071 MS (.)2415 1071 MS (.)2436 1071 MS (.)2457 1071 MS (.)2478 1071 MS (.)2499 1071 MS (.)2520 1071 MS (.)2541 1071 MS (.)2562 1071 MS
(.)2583 1071 MS (.)2604 1071 MS (.)2625 1071 MS (.)2646 1071 MS (.)2667 1071 MS (.)2688 1071 MS (.)2709 1071 MS (.)2730 1071 MS (.)2751 1071 MS (.)2772 1071 MS (.)2793 1071 MS (.)2814 1071 MS (.)2835 1071 MS (.)2856 1071 MS (.)2877 1071 MS (.)2898 1071 MS
(.)2919 1071 MS (.)2940 1071 MS (.)2961 1071 MS (.)2982 1071 MS (.)3003 1071 MS (.)3024 1071 MS (.)3045 1071 MS (.)3066 1071 MS (.)3087 1071 MS (.)3108 1071 MS (.)3129 1071 MS (.)3150 1071 MS (.)3171 1071 MS (.)3192 1071 MS (.)3213 1071 MS (.)3234 1071 MS
(.)3255 1071 MS (.)3276 1071 MS (.)3297 1071 MS (.)3318 1071 MS (.)3339 1071 MS (.)3360 1071 MS (.)3381 1071 MS (.)3402 1071 MS (.)3423 1071 MS (.)3444 1071 MS (.)3465 1071 MS (.)3486 1071 MS (.)3507 1071 MS (.)3528 1071 MS (.)3549 1071 MS (.)3570 1071 MS
(.)3591 1071 MS (.)3612 1071 MS (.)3633 1071 MS (.)3654 1071 MS (.)3675 1071 MS (.)3696 1071 MS (.)3717 1071 MS (.)3738 1071 MS (.)3759 1071 MS (.)3780 1071 MS (.)3801 1071 MS (.)3822 1071 MS (.)3843 1071 MS (.)3864 1071 MS (.)3885 1071 MS (.)3906 1071 MS
(.)3927 1071 MS (.)3948 1071 MS (.)3969 1071 MS (.)3990 1071 MS (.)4011 1071 MS (.)4032 1071 MS (.)4053 1071 MS (.)4074 1071 MS (.)4095 1071 MS (.)4116 1071 MS (.)4137 1071 MS (.)4158 1071 MS (.)4179 1071 MS (.)4200 1071 MS (.)4221 1071 MS (.)4242 1071 MS
(.)4263 1071 MS (.)4284 1071 MS (.)4305 1071 MS (.)4326 1071 MS (.)4347 1071 MS (.)4368 1071 MS (.)4389 1071 MS (.)4410 1071 MS (.)4431 1071 MS (.)4452 1071 MS (.)4473 1071 MS
(7)4498 1071 MS
(10. Security Considerations)340 1169 MS
(.)1260 1169 MS (.)1281 1169 MS (.)1302 1169 MS (.)1323 1169 MS (.)1344 1169 MS (.)1365 1169 MS (.)1386 1169 MS (.)1407 1169 MS (.)1428 1169 MS (.)1449 1169 MS (.)1470 1169 MS (.)1491 1169 MS (.)1512 1169 MS (.)1533 1169 MS (.)1554 1169 MS (.)1575 1169 MS
(.)1596 1169 MS (.)1617 1169 MS (.)1638 1169 MS (.)1659 1169 MS (.)1680 1169 MS (.)1701 1169 MS (.)1722 1169 MS (.)1743 1169 MS (.)1764 1169 MS (.)1785 1169 MS (.)1806 1169 MS (.)1827 1169 MS (.)1848 1169 MS (.)1869 1169 MS (.)1890 1169 MS (.)1911 1169 MS
(.)1932 1169 MS (.)1953 1169 MS (.)1974 1169 MS (.)1995 1169 MS (.)2016 1169 MS (.)2037 1169 MS (.)2058 1169 MS (.)2079 1169 MS (.)2100 1169 MS (.)2121 1169 MS (.)2142 1169 MS (.)2163 1169 MS (.)2184 1169 MS (.)2205 1169 MS (.)2226 1169 MS (.)2247 1169 MS
(.)2268 1169 MS (.)2289 1169 MS (.)2310 1169 MS (.)2331 1169 MS (.)2352 1169 MS (.)2373 1169 MS (.)2394 1169 MS (.)2415 1169 MS (.)2436 1169 MS (.)2457 1169 MS (.)2478 1169 MS (.)2499 1169 MS (.)2520 1169 MS (.)2541 1169 MS (.)2562 1169 MS (.)2583 1169 MS
(.)2604 1169 MS (.)2625 1169 MS (.)2646 1169 MS (.)2667 1169 MS (.)2688 1169 MS (.)2709 1169 MS (.)2730 1169 MS (.)2751 1169 MS (.)2772 1169 MS (.)2793 1169 MS (.)2814 1169 MS (.)2835 1169 MS (.)2856 1169 MS (.)2877 1169 MS (.)2898 1169 MS (.)2919 1169 MS
(.)2940 1169 MS (.)2961 1169 MS (.)2982 1169 MS (.)3003 1169 MS (.)3024 1169 MS (.)3045 1169 MS (.)3066 1169 MS (.)3087 1169 MS (.)3108 1169 MS (.)3129 1169 MS (.)3150 1169 MS (.)3171 1169 MS (.)3192 1169 MS (.)3213 1169 MS (.)3234 1169 MS (.)3255 1169 MS
(.)3276 1169 MS (.)3297 1169 MS (.)3318 1169 MS (.)3339 1169 MS (.)3360 1169 MS (.)3381 1169 MS (.)3402 1169 MS (.)3423 1169 MS (.)3444 1169 MS (.)3465 1169 MS (.)3486 1169 MS (.)3507 1169 MS (.)3528 1169 MS (.)3549 1169 MS (.)3570 1169 MS (.)3591 1169 MS
(.)3612 1169 MS (.)3633 1169 MS (.)3654 1169 MS (.)3675 1169 MS (.)3696 1169 MS (.)3717 1169 MS (.)3738 1169 MS (.)3759 1169 MS (.)3780 1169 MS (.)3801 1169 MS (.)3822 1169 MS (.)3843 1169 MS (.)3864 1169 MS (.)3885 1169 MS (.)3906 1169 MS (.)3927 1169 MS
(.)3948 1169 MS (.)3969 1169 MS (.)3990 1169 MS (.)4011 1169 MS (.)4032 1169 MS (.)4053 1169 MS (.)4074 1169 MS (.)4095 1169 MS (.)4116 1169 MS (.)4137 1169 MS (.)4158 1169 MS (.)4179 1169 MS (.)4200 1169 MS (.)4221 1169 MS (.)4242 1169 MS (.)4263 1169 MS
(.)4284 1169 MS (.)4305 1169 MS (.)4326 1169 MS (.)4347 1169 MS (.)4368 1169 MS (.)4389 1169 MS (.)4410 1169 MS (.)4431 1169 MS (.)4452 1169 MS (.)4473 1169 MS
(7)4498 1169 MS
(11. References)340 1267 MS
(.)840 1267 MS (.)861 1267 MS (.)882 1267 MS (.)903 1267 MS (.)924 1267 MS (.)945 1267 MS (.)966 1267 MS (.)987 1267 MS (.)1008 1267 MS (.)1029 1267 MS (.)1050 1267 MS (.)1071 1267 MS (.)1092 1267 MS (.)1113 1267 MS (.)1134 1267 MS (.)1155 1267 MS
(.)1176 1267 MS (.)1197 1267 MS (.)1218 1267 MS (.)1239 1267 MS (.)1260 1267 MS (.)1281 1267 MS (.)1302 1267 MS (.)1323 1267 MS (.)1344 1267 MS (.)1365 1267 MS (.)1386 1267 MS (.)1407 1267 MS (.)1428 1267 MS (.)1449 1267 MS (.)1470 1267 MS (.)1491 1267 MS
(.)1512 1267 MS (.)1533 1267 MS (.)1554 1267 MS (.)1575 1267 MS (.)1596 1267 MS (.)1617 1267 MS (.)1638 1267 MS (.)1659 1267 MS (.)1680 1267 MS (.)1701 1267 MS (.)1722 1267 MS (.)1743 1267 MS (.)1764 1267 MS (.)1785 1267 MS (.)1806 1267 MS (.)1827 1267 MS
(.)1848 1267 MS (.)1869 1267 MS (.)1890 1267 MS (.)1911 1267 MS (.)1932 1267 MS (.)1953 1267 MS (.)1974 1267 MS (.)1995 1267 MS (.)2016 1267 MS (.)2037 1267 MS (.)2058 1267 MS (.)2079 1267 MS (.)2100 1267 MS (.)2121 1267 MS (.)2142 1267 MS (.)2163 1267 MS
(.)2184 1267 MS (.)2205 1267 MS (.)2226 1267 MS (.)2247 1267 MS (.)2268 1267 MS (.)2289 1267 MS (.)2310 1267 MS (.)2331 1267 MS (.)2352 1267 MS (.)2373 1267 MS (.)2394 1267 MS (.)2415 1267 MS (.)2436 1267 MS (.)2457 1267 MS (.)2478 1267 MS (.)2499 1267 MS
(.)2520 1267 MS (.)2541 1267 MS (.)2562 1267 MS (.)2583 1267 MS (.)2604 1267 MS (.)2625 1267 MS (.)2646 1267 MS (.)2667 1267 MS (.)2688 1267 MS (.)2709 1267 MS (.)2730 1267 MS (.)2751 1267 MS (.)2772 1267 MS (.)2793 1267 MS (.)2814 1267 MS (.)2835 1267 MS
(.)2856 1267 MS (.)2877 1267 MS (.)2898 1267 MS (.)2919 1267 MS (.)2940 1267 MS (.)2961 1267 MS (.)2982 1267 MS (.)3003 1267 MS (.)3024 1267 MS (.)3045 1267 MS (.)3066 1267 MS (.)3087 1267 MS (.)3108 1267 MS (.)3129 1267 MS (.)3150 1267 MS (.)3171 1267 MS
(.)3192 1267 MS (.)3213 1267 MS (.)3234 1267 MS (.)3255 1267 MS (.)3276 1267 MS (.)3297 1267 MS (.)3318 1267 MS (.)3339 1267 MS (.)3360 1267 MS (.)3381 1267 MS (.)3402 1267 MS (.)3423 1267 MS (.)3444 1267 MS (.)3465 1267 MS (.)3486 1267 MS (.)3507 1267 MS
(.)3528 1267 MS (.)3549 1267 MS (.)3570 1267 MS (.)3591 1267 MS (.)3612 1267 MS (.)3633 1267 MS (.)3654 1267 MS (.)3675 1267 MS (.)3696 1267 MS (.)3717 1267 MS (.)3738 1267 MS (.)3759 1267 MS (.)3780 1267 MS (.)3801 1267 MS (.)3822 1267 MS (.)3843 1267 MS
(.)3864 1267 MS (.)3885 1267 MS (.)3906 1267 MS (.)3927 1267 MS (.)3948 1267 MS (.)3969 1267 MS (.)3990 1267 MS (.)4011 1267 MS (.)4032 1267 MS (.)4053 1267 MS (.)4074 1267 MS (.)4095 1267 MS (.)4116 1267 MS (.)4137 1267 MS (.)4158 1267 MS (.)4179 1267 MS
(.)4200 1267 MS (.)4221 1267 MS (.)4242 1267 MS (.)4263 1267 MS (.)4284 1267 MS (.)4305 1267 MS (.)4326 1267 MS (.)4347 1267 MS (.)4368 1267 MS (.)4389 1267 MS (.)4410 1267 MS (.)4431 1267 MS (.)4452 1267 MS (.)4473 1267 MS
(7)4498 1267 MS
(12. Acknowledgements)340 1365 MS
(.)1134 1365 MS (.)1155 1365 MS (.)1176 1365 MS (.)1197 1365 MS (.)1218 1365 MS (.)1239 1365 MS (.)1260 1365 MS (.)1281 1365 MS (.)1302 1365 MS (.)1323 1365 MS (.)1344 1365 MS (.)1365 1365 MS (.)1386 1365 MS (.)1407 1365 MS (.)1428 1365 MS (.)1449 1365 MS
(.)1470 1365 MS (.)1491 1365 MS (.)1512 1365 MS (.)1533 1365 MS (.)1554 1365 MS (.)1575 1365 MS (.)1596 1365 MS (.)1617 1365 MS (.)1638 1365 MS (.)1659 1365 MS (.)1680 1365 MS (.)1701 1365 MS (.)1722 1365 MS (.)1743 1365 MS (.)1764 1365 MS (.)1785 1365 MS
(.)1806 1365 MS (.)1827 1365 MS (.)1848 1365 MS (.)1869 1365 MS (.)1890 1365 MS (.)1911 1365 MS (.)1932 1365 MS (.)1953 1365 MS (.)1974 1365 MS (.)1995 1365 MS (.)2016 1365 MS (.)2037 1365 MS (.)2058 1365 MS (.)2079 1365 MS (.)2100 1365 MS (.)2121 1365 MS
(.)2142 1365 MS (.)2163 1365 MS (.)2184 1365 MS (.)2205 1365 MS (.)2226 1365 MS (.)2247 1365 MS (.)2268 1365 MS (.)2289 1365 MS (.)2310 1365 MS (.)2331 1365 MS (.)2352 1365 MS (.)2373 1365 MS (.)2394 1365 MS (.)2415 1365 MS (.)2436 1365 MS (.)2457 1365 MS
(.)2478 1365 MS (.)2499 1365 MS (.)2520 1365 MS (.)2541 1365 MS (.)2562 1365 MS (.)2583 1365 MS (.)2604 1365 MS (.)2625 1365 MS (.)2646 1365 MS (.)2667 1365 MS (.)2688 1365 MS (.)2709 1365 MS (.)2730 1365 MS (.)2751 1365 MS (.)2772 1365 MS (.)2793 1365 MS
(.)2814 1365 MS (.)2835 1365 MS (.)2856 1365 MS (.)2877 1365 MS (.)2898 1365 MS (.)2919 1365 MS (.)2940 1365 MS (.)2961 1365 MS (.)2982 1365 MS (.)3003 1365 MS (.)3024 1365 MS (.)3045 1365 MS (.)3066 1365 MS (.)3087 1365 MS (.)3108 1365 MS (.)3129 1365 MS
(.)3150 1365 MS (.)3171 1365 MS (.)3192 1365 MS (.)3213 1365 MS (.)3234 1365 MS (.)3255 1365 MS (.)3276 1365 MS (.)3297 1365 MS (.)3318 1365 MS (.)3339 1365 MS (.)3360 1365 MS (.)3381 1365 MS (.)3402 1365 MS (.)3423 1365 MS (.)3444 1365 MS (.)3465 1365 MS
(.)3486 1365 MS (.)3507 1365 MS (.)3528 1365 MS (.)3549 1365 MS (.)3570 1365 MS (.)3591 1365 MS (.)3612 1365 MS (.)3633 1365 MS (.)3654 1365 MS (.)3675 1365 MS (.)3696 1365 MS (.)3717 1365 MS (.)3738 1365 MS (.)3759 1365 MS (.)3780 1365 MS (.)3801 1365 MS
(.)3822 1365 MS (.)3843 1365 MS (.)3864 1365 MS (.)3885 1365 MS (.)3906 1365 MS (.)3927 1365 MS (.)3948 1365 MS (.)3969 1365 MS (.)3990 1365 MS (.)4011 1365 MS (.)4032 1365 MS (.)4053 1365 MS (.)4074 1365 MS (.)4095 1365 MS (.)4116 1365 MS (.)4137 1365 MS
(.)4158 1365 MS (.)4179 1365 MS (.)4200 1365 MS (.)4221 1365 MS (.)4242 1365 MS (.)4263 1365 MS (.)4284 1365 MS (.)4305 1365 MS (.)4326 1365 MS (.)4347 1365 MS (.)4368 1365 MS (.)4389 1365 MS (.)4410 1365 MS (.)4431 1365 MS (.)4452 1365 MS (.)4473 1365 MS
(8)4498 1365 MS
(13. Authors Addresses)340 1463 MS
(.)1113 1463 MS (.)1134 1463 MS (.)1155 1463 MS (.)1176 1463 MS (.)1197 1463 MS (.)1218 1463 MS (.)1239 1463 MS (.)1260 1463 MS (.)1281 1463 MS (.)1302 1463 MS (.)1323 1463 MS (.)1344 1463 MS (.)1365 1463 MS (.)1386 1463 MS (.)1407 1463 MS (.)1428 1463 MS
(.)1449 1463 MS (.)1470 1463 MS (.)1491 1463 MS (.)1512 1463 MS (.)1533 1463 MS (.)1554 1463 MS (.)1575 1463 MS (.)1596 1463 MS (.)1617 1463 MS (.)1638 1463 MS (.)1659 1463 MS (.)1680 1463 MS (.)1701 1463 MS (.)1722 1463 MS (.)1743 1463 MS (.)1764 1463 MS
(.)1785 1463 MS (.)1806 1463 MS (.)1827 1463 MS (.)1848 1463 MS (.)1869 1463 MS (.)1890 1463 MS (.)1911 1463 MS (.)1932 1463 MS (.)1953 1463 MS (.)1974 1463 MS (.)1995 1463 MS (.)2016 1463 MS (.)2037 1463 MS (.)2058 1463 MS (.)2079 1463 MS (.)2100 1463 MS
(.)2121 1463 MS (.)2142 1463 MS (.)2163 1463 MS (.)2184 1463 MS (.)2205 1463 MS (.)2226 1463 MS (.)2247 1463 MS (.)2268 1463 MS (.)2289 1463 MS (.)2310 1463 MS (.)2331 1463 MS (.)2352 1463 MS (.)2373 1463 MS (.)2394 1463 MS (.)2415 1463 MS (.)2436 1463 MS
(.)2457 1463 MS (.)2478 1463 MS (.)2499 1463 MS (.)2520 1463 MS (.)2541 1463 MS (.)2562 1463 MS (.)2583 1463 MS (.)2604 1463 MS (.)2625 1463 MS (.)2646 1463 MS (.)2667 1463 MS (.)2688 1463 MS (.)2709 1463 MS (.)2730 1463 MS (.)2751 1463 MS (.)2772 1463 MS
(.)2793 1463 MS (.)2814 1463 MS (.)2835 1463 MS (.)2856 1463 MS (.)2877 1463 MS (.)2898 1463 MS (.)2919 1463 MS (.)2940 1463 MS (.)2961 1463 MS (.)2982 1463 MS (.)3003 1463 MS (.)3024 1463 MS (.)3045 1463 MS (.)3066 1463 MS (.)3087 1463 MS (.)3108 1463 MS
(.)3129 1463 MS (.)3150 1463 MS (.)3171 1463 MS (.)3192 1463 MS (.)3213 1463 MS (.)3234 1463 MS (.)3255 1463 MS (.)3276 1463 MS (.)3297 1463 MS (.)3318 1463 MS (.)3339 1463 MS (.)3360 1463 MS (.)3381 1463 MS (.)3402 1463 MS (.)3423 1463 MS (.)3444 1463 MS
(.)3465 1463 MS (.)3486 1463 MS (.)3507 1463 MS (.)3528 1463 MS (.)3549 1463 MS (.)3570 1463 MS (.)3591 1463 MS (.)3612 1463 MS (.)3633 1463 MS (.)3654 1463 MS (.)3675 1463 MS (.)3696 1463 MS (.)3717 1463 MS (.)3738 1463 MS (.)3759 1463 MS (.)3780 1463 MS
(.)3801 1463 MS (.)3822 1463 MS (.)3843 1463 MS (.)3864 1463 MS (.)3885 1463 MS (.)3906 1463 MS (.)3927 1463 MS (.)3948 1463 MS (.)3969 1463 MS (.)3990 1463 MS (.)4011 1463 MS (.)4032 1463 MS (.)4053 1463 MS (.)4074 1463 MS (.)4095 1463 MS (.)4116 1463 MS
(.)4137 1463 MS (.)4158 1463 MS (.)4179 1463 MS (.)4200 1463 MS (.)4221 1463 MS (.)4242 1463 MS (.)4263 1463 MS (.)4284 1463 MS (.)4305 1463 MS (.)4326 1463 MS (.)4347 1463 MS (.)4368 1463 MS (.)4389 1463 MS (.)4410 1463 MS (.)4431 1463 MS (.)4452 1463 MS
(.)4473 1463 MS
(8)4498 1463 MS
(14. Summary of Protocol Interactions)340 1561 MS
(.)1596 1561 MS (.)1617 1561 MS (.)1638 1561 MS (.)1659 1561 MS (.)1680 1561 MS (.)1701 1561 MS (.)1722 1561 MS (.)1743 1561 MS (.)1764 1561 MS (.)1785 1561 MS (.)1806 1561 MS (.)1827 1561 MS (.)1848 1561 MS (.)1869 1561 MS (.)1890 1561 MS (.)1911 1561 MS
(.)1932 1561 MS (.)1953 1561 MS (.)1974 1561 MS (.)1995 1561 MS (.)2016 1561 MS (.)2037 1561 MS (.)2058 1561 MS (.)2079 1561 MS (.)2100 1561 MS (.)2121 1561 MS (.)2142 1561 MS (.)2163 1561 MS (.)2184 1561 MS (.)2205 1561 MS (.)2226 1561 MS (.)2247 1561 MS
(.)2268 1561 MS (.)2289 1561 MS (.)2310 1561 MS (.)2331 1561 MS (.)2352 1561 MS (.)2373 1561 MS (.)2394 1561 MS (.)2415 1561 MS (.)2436 1561 MS (.)2457 1561 MS (.)2478 1561 MS (.)2499 1561 MS (.)2520 1561 MS (.)2541 1561 MS (.)2562 1561 MS (.)2583 1561 MS
(.)2604 1561 MS (.)2625 1561 MS (.)2646 1561 MS (.)2667 1561 MS (.)2688 1561 MS (.)2709 1561 MS (.)2730 1561 MS (.)2751 1561 MS (.)2772 1561 MS (.)2793 1561 MS (.)2814 1561 MS (.)2835 1561 MS (.)2856 1561 MS (.)2877 1561 MS (.)2898 1561 MS (.)2919 1561 MS
(.)2940 1561 MS (.)2961 1561 MS (.)2982 1561 MS (.)3003 1561 MS (.)3024 1561 MS (.)3045 1561 MS (.)3066 1561 MS (.)3087 1561 MS (.)3108 1561 MS (.)3129 1561 MS (.)3150 1561 MS (.)3171 1561 MS (.)3192 1561 MS (.)3213 1561 MS (.)3234 1561 MS (.)3255 1561 MS
(.)3276 1561 MS (.)3297 1561 MS (.)3318 1561 MS (.)3339 1561 MS (.)3360 1561 MS (.)3381 1561 MS (.)3402 1561 MS (.)3423 1561 MS (.)3444 1561 MS (.)3465 1561 MS (.)3486 1561 MS (.)3507 1561 MS (.)3528 1561 MS (.)3549 1561 MS (.)3570 1561 MS (.)3591 1561 MS
(.)3612 1561 MS (.)3633 1561 MS (.)3654 1561 MS (.)3675 1561 MS (.)3696 1561 MS (.)3717 1561 MS (.)3738 1561 MS (.)3759 1561 MS (.)3780 1561 MS (.)3801 1561 MS (.)3822 1561 MS (.)3843 1561 MS (.)3864 1561 MS (.)3885 1561 MS (.)3906 1561 MS (.)3927 1561 MS
(.)3948 1561 MS (.)3969 1561 MS (.)3990 1561 MS (.)4011 1561 MS (.)4032 1561 MS (.)4053 1561 MS (.)4074 1561 MS (.)4095 1561 MS (.)4116 1561 MS (.)4137 1561 MS (.)4158 1561 MS (.)4179 1561 MS (.)4200 1561 MS (.)4221 1561 MS (.)4242 1561 MS (.)4263 1561 MS
(.)4284 1561 MS (.)4305 1561 MS (.)4326 1561 MS (.)4347 1561 MS (.)4368 1561 MS (.)4389 1561 MS (.)4410 1561 MS (.)4431 1561 MS (.)4452 1561 MS (.)4473 1561 MS
(9)4498 1561 MS
(15. Examples)340 1659 MS
(.)798 1659 MS (.)819 1659 MS (.)840 1659 MS (.)861 1659 MS (.)882 1659 MS (.)903 1659 MS (.)924 1659 MS (.)945 1659 MS (.)966 1659 MS (.)987 1659 MS (.)1008 1659 MS (.)1029 1659 MS (.)1050 1659 MS (.)1071 1659 MS (.)1092 1659 MS (.)1113 1659 MS
(.)1134 1659 MS (.)1155 1659 MS (.)1176 1659 MS (.)1197 1659 MS (.)1218 1659 MS (.)1239 1659 MS (.)1260 1659 MS (.)1281 1659 MS (.)1302 1659 MS (.)1323 1659 MS (.)1344 1659 MS (.)1365 1659 MS (.)1386 1659 MS (.)1407 1659 MS (.)1428 1659 MS (.)1449 1659 MS
(.)1470 1659 MS (.)1491 1659 MS (.)1512 1659 MS (.)1533 1659 MS (.)1554 1659 MS (.)1575 1659 MS (.)1596 1659 MS (.)1617 1659 MS (.)1638 1659 MS (.)1659 1659 MS (.)1680 1659 MS (.)1701 1659 MS (.)1722 1659 MS (.)1743 1659 MS (.)1764 1659 MS (.)1785 1659 MS
(.)1806 1659 MS (.)1827 1659 MS (.)1848 1659 MS (.)1869 1659 MS (.)1890 1659 MS (.)1911 1659 MS (.)1932 1659 MS (.)1953 1659 MS (.)1974 1659 MS (.)1995 1659 MS (.)2016 1659 MS (.)2037 1659 MS (.)2058 1659 MS (.)2079 1659 MS (.)2100 1659 MS (.)2121 1659 MS
(.)2142 1659 MS (.)2163 1659 MS (.)2184 1659 MS (.)2205 1659 MS (.)2226 1659 MS (.)2247 1659 MS (.)2268 1659 MS (.)2289 1659 MS (.)2310 1659 MS (.)2331 1659 MS (.)2352 1659 MS (.)2373 1659 MS (.)2394 1659 MS (.)2415 1659 MS (.)2436 1659 MS (.)2457 1659 MS
(.)2478 1659 MS (.)2499 1659 MS (.)2520 1659 MS (.)2541 1659 MS (.)2562 1659 MS (.)2583 1659 MS (.)2604 1659 MS (.)2625 1659 MS (.)2646 1659 MS (.)2667 1659 MS (.)2688 1659 MS (.)2709 1659 MS (.)2730 1659 MS (.)2751 1659 MS (.)2772 1659 MS (.)2793 1659 MS
(.)2814 1659 MS (.)2835 1659 MS (.)2856 1659 MS (.)2877 1659 MS (.)2898 1659 MS (.)2919 1659 MS (.)2940 1659 MS (.)2961 1659 MS (.)2982 1659 MS (.)3003 1659 MS (.)3024 1659 MS (.)3045 1659 MS (.)3066 1659 MS (.)3087 1659 MS (.)3108 1659 MS (.)3129 1659 MS
(.)3150 1659 MS (.)3171 1659 MS (.)3192 1659 MS (.)3213 1659 MS (.)3234 1659 MS (.)3255 1659 MS (.)3276 1659 MS (.)3297 1659 MS (.)3318 1659 MS (.)3339 1659 MS (.)3360 1659 MS (.)3381 1659 MS (.)3402 1659 MS (.)3423 1659 MS (.)3444 1659 MS (.)3465 1659 MS
(.)3486 1659 MS (.)3507 1659 MS (.)3528 1659 MS (.)3549 1659 MS (.)3570 1659 MS (.)3591 1659 MS (.)3612 1659 MS (.)3633 1659 MS (.)3654 1659 MS (.)3675 1659 MS (.)3696 1659 MS (.)3717 1659 MS (.)3738 1659 MS (.)3759 1659 MS (.)3780 1659 MS (.)3801 1659 MS
(.)3822 1659 MS (.)3843 1659 MS (.)3864 1659 MS (.)3885 1659 MS (.)3906 1659 MS (.)3927 1659 MS (.)3948 1659 MS (.)3969 1659 MS (.)3990 1659 MS (.)4011 1659 MS (.)4032 1659 MS (.)4053 1659 MS (.)4074 1659 MS (.)4095 1659 MS (.)4116 1659 MS (.)4137 1659 MS
(.)4158 1659 MS (.)4179 1659 MS (.)4200 1659 MS (.)4221 1659 MS (.)4242 1659 MS (.)4263 1659 MS (.)4284 1659 MS (.)4305 1659 MS (.)4326 1659 MS (.)4347 1659 MS (.)4368 1659 MS (.)4389 1659 MS (.)4410 1659 MS (.)4431 1659 MS (.)4452 1659 MS (.)4473 1659 MS
(9)4498 1659 MS
(15.1 Client Requests Server to use an Extension)442 1757 MS
(.)2058 1757 MS (.)2079 1757 MS (.)2100 1757 MS (.)2121 1757 MS (.)2142 1757 MS (.)2163 1757 MS (.)2184 1757 MS (.)2205 1757 MS (.)2226 1757 MS (.)2247 1757 MS (.)2268 1757 MS (.)2289 1757 MS (.)2310 1757 MS (.)2331 1757 MS (.)2352 1757 MS (.)2373 1757 MS
(.)2394 1757 MS (.)2415 1757 MS (.)2436 1757 MS (.)2457 1757 MS (.)2478 1757 MS (.)2499 1757 MS (.)2520 1757 MS (.)2541 1757 MS (.)2562 1757 MS (.)2583 1757 MS (.)2604 1757 MS (.)2625 1757 MS (.)2646 1757 MS (.)2667 1757 MS (.)2688 1757 MS (.)2709 1757 MS
(.)2730 1757 MS (.)2751 1757 MS (.)2772 1757 MS (.)2793 1757 MS (.)2814 1757 MS (.)2835 1757 MS (.)2856 1757 MS (.)2877 1757 MS (.)2898 1757 MS (.)2919 1757 MS (.)2940 1757 MS (.)2961 1757 MS (.)2982 1757 MS (.)3003 1757 MS (.)3024 1757 MS (.)3045 1757 MS
(.)3066 1757 MS (.)3087 1757 MS (.)3108 1757 MS (.)3129 1757 MS (.)3150 1757 MS (.)3171 1757 MS (.)3192 1757 MS (.)3213 1757 MS (.)3234 1757 MS (.)3255 1757 MS (.)3276 1757 MS (.)3297 1757 MS (.)3318 1757 MS (.)3339 1757 MS (.)3360 1757 MS (.)3381 1757 MS
(.)3402 1757 MS (.)3423 1757 MS (.)3444 1757 MS (.)3465 1757 MS (.)3486 1757 MS (.)3507 1757 MS (.)3528 1757 MS (.)3549 1757 MS (.)3570 1757 MS (.)3591 1757 MS (.)3612 1757 MS (.)3633 1757 MS (.)3654 1757 MS (.)3675 1757 MS (.)3696 1757 MS (.)3717 1757 MS
(.)3738 1757 MS (.)3759 1757 MS (.)3780 1757 MS (.)3801 1757 MS (.)3822 1757 MS (.)3843 1757 MS (.)3864 1757 MS (.)3885 1757 MS (.)3906 1757 MS (.)3927 1757 MS (.)3948 1757 MS (.)3969 1757 MS (.)3990 1757 MS (.)4011 1757 MS (.)4032 1757 MS (.)4053 1757 MS
(.)4074 1757 MS (.)4095 1757 MS (.)4116 1757 MS (.)4137 1757 MS (.)4158 1757 MS (.)4179 1757 MS (.)4200 1757 MS (.)4221 1757 MS (.)4242 1757 MS (.)4263 1757 MS (.)4284 1757 MS (.)4305 1757 MS (.)4326 1757 MS (.)4347 1757 MS (.)4368 1757 MS (.)4389 1757 MS
(.)4410 1757 MS (.)4431 1757 MS (.)4452 1757 MS (.)4473 1757 MS
(9)4498 1757 MS
(15.2 Server proposes the use of an Extension)442 1855 MS
(.)1953 1855 MS (.)1974 1855 MS (.)1995 1855 MS (.)2016 1855 MS (.)2037 1855 MS (.)2058 1855 MS (.)2079 1855 MS (.)2100 1855 MS (.)2121 1855 MS (.)2142 1855 MS (.)2163 1855 MS (.)2184 1855 MS (.)2205 1855 MS (.)2226 1855 MS (.)2247 1855 MS (.)2268 1855 MS
(.)2289 1855 MS (.)2310 1855 MS (.)2331 1855 MS (.)2352 1855 MS (.)2373 1855 MS (.)2394 1855 MS (.)2415 1855 MS (.)2436 1855 MS (.)2457 1855 MS (.)2478 1855 MS (.)2499 1855 MS (.)2520 1855 MS (.)2541 1855 MS (.)2562 1855 MS (.)2583 1855 MS (.)2604 1855 MS
(.)2625 1855 MS (.)2646 1855 MS (.)2667 1855 MS (.)2688 1855 MS (.)2709 1855 MS (.)2730 1855 MS (.)2751 1855 MS (.)2772 1855 MS (.)2793 1855 MS (.)2814 1855 MS (.)2835 1855 MS (.)2856 1855 MS (.)2877 1855 MS (.)2898 1855 MS (.)2919 1855 MS (.)2940 1855 MS
(.)2961 1855 MS (.)2982 1855 MS (.)3003 1855 MS (.)3024 1855 MS (.)3045 1855 MS (.)3066 1855 MS (.)3087 1855 MS (.)3108 1855 MS (.)3129 1855 MS (.)3150 1855 MS (.)3171 1855 MS (.)3192 1855 MS (.)3213 1855 MS (.)3234 1855 MS (.)3255 1855 MS (.)3276 1855 MS
(.)3297 1855 MS (.)3318 1855 MS (.)3339 1855 MS (.)3360 1855 MS (.)3381 1855 MS (.)3402 1855 MS (.)3423 1855 MS (.)3444 1855 MS (.)3465 1855 MS (.)3486 1855 MS (.)3507 1855 MS (.)3528 1855 MS (.)3549 1855 MS (.)3570 1855 MS (.)3591 1855 MS (.)3612 1855 MS
(.)3633 1855 MS (.)3654 1855 MS (.)3675 1855 MS (.)3696 1855 MS (.)3717 1855 MS (.)3738 1855 MS (.)3759 1855 MS (.)3780 1855 MS (.)3801 1855 MS (.)3822 1855 MS (.)3843 1855 MS (.)3864 1855 MS (.)3885 1855 MS (.)3906 1855 MS (.)3927 1855 MS (.)3948 1855 MS
(.)3969 1855 MS (.)3990 1855 MS (.)4011 1855 MS (.)4032 1855 MS (.)4053 1855 MS (.)4074 1855 MS (.)4095 1855 MS (.)4116 1855 MS (.)4137 1855 MS (.)4158 1855 MS (.)4179 1855 MS (.)4200 1855 MS (.)4221 1855 MS (.)4242 1855 MS (.)4263 1855 MS (.)4284 1855 MS
(.)4305 1855 MS (.)4326 1855 MS (.)4347 1855 MS (.)4368 1855 MS (.)4389 1855 MS (.)4410 1855 MS (.)4431 1855 MS
(10)4456 1855 MS
[150 0 0 -150 0 0]/Times-Bold MF
(1)340 2118 MS (.)415 2118 MS ( )453 2118 MS
(I)513 2118 MS (n)571 2118 MS (t)654 2118 MS (r)704 2118 MS (o)768 2118 MS (d)843 2118 MS (u)926 2118 MS (c)1009 2118 MS (t)1076 2118 MS (i)1126 2118 MS (o)1168 2118 MS (n)1243 2118 MS
[83 0 0 -83 0 0]/Times-Roman MF
(The mandatory proposal is designed to accommodate dynamic extension of HTTP clients and servers by software)340 2304 MS
(components; and to address the tension between private agreement and public specification. The kind of extensions capable of)340 2402 MS
(being introduced range from:)340 2500 MS
(o)490 2648 MS ( )532 2648 MS
(extending a single HTTP message;)640 2648 MS
(o)490 2746 MS ( )532 2746 MS
(introducing new encodings;)640 2746 MS
(o)490 2844 MS ( )532 2844 MS
(initiating HTTP-derived protocols for new applications; to...)640 2844 MS
(o)490 2942 MS ( )532 2942 MS
(switching to protocols which, once initiated, run independent of the original protocol stack.)640 2942 MS
(The  proposal is intended to be used as follows:)340 3090 MS
(o)490 3238 MS ( )532 3238 MS
(Some party designs and specifies an extension; the party assigns the extension an identifier, which is a URI, and)640 3238 MS
(makes one or more representations of the extension available at that address \(see section )640 3336 MS
(9)3597 3336 MS
(\).)3639 3336 MS
(o)490 3434 MS ( )532 3434 MS
(An HTTP client, server, or proxy that implements the Mandatory extension mechanism \(hereafter called an )640 3434 MS
%%IncludeFont: Times-Italic
[83 0 0 -83 0 0]/Times-Italic MF
(agent)4222 3434 MS
[83 0 0 -83 0 0]/Times-Roman MF
(\))4408 3434 MS
(declares the use of the extension by referencing its URI in an extension declaration in an HTTP message \(see section)640 3532 MS
(3)640 3630 MS
(\).)682 3630 MS
(o)490 3728 MS ( )532 3728 MS
(The )640 3728 MS
[83 0 0 -83 0 0]/Times-Italic MF
(ultimate recipient)791 3728 MS
[83 0 0 -83 0 0]/Times-Roman MF
( of the extension declaration which can be the origin server, the user agent, or any intermediary)1381 3728 MS
(in the request/response chain can based on the extension declaration deduce how to properly interpret the extended)640 3826 MS
(message.)640 3924 MS
(The proposal uses features in HTTP/1.1 but is compatible with both HTTP/1.0 and HTTP/1.1 applications in such a way that)340 4072 MS
(extended applications can coexist with existing HTTP applications.)340 4170 MS
(By providing a more robust framework for describing extensions, this proposal )340 4368 MS
(supersedes )2986 4368 MS
(several )3367 4368 MS
(existing )3623 4368 MS
(extension)3905 4368 MS
(mechanisms )340 4466 MS
(like)767 4466 MS
( the HTTP/1.1 Expect and Upgrade header fields as well as avoids existing problems with non-compliant)891 4466 MS
(CGI scripts handling unknown HTTP methods.)340 4564 MS
[150 0 0 -150 0 0]/Times-Bold MF
(2)340 4877 MS (.)415 4877 MS ( )453 4877 MS
(N)513 4877 MS (o)621 4877 MS (t)696 4877 MS (a)746 4877 MS (t)821 4877 MS (i)871 4877 MS (o)913 4877 MS (n)988 4877 MS (a)1071 4877 MS (l)1146 4877 MS ( )1188 4877 MS (C)1226 4877 MS (o)1334 4877 MS (n)1409 4877 MS (v)1492 4877 MS (e)1567 4877 MS
(n)1634 4877 MS (t)1717 4877 MS (i)1767 4877 MS (o)1809 4877 MS (n)1884 4877 MS (s)1967 4877 MS
[83 0 0 -83 0 0]/Times-Roman MF
(This specification uses the same notational conventions and basic parsing constructs as )340 5063 MS
0.105 g
(RFC 2068)3248 5063 MS
0 g
([)3593 5063 MS
(7)3621 5063 MS
(]. In particular the BNF)3663 5063 MS
(constructs ")340 5161 MS
%%IncludeFont: Courier
[83 0 0 -83 0 0]/Courier MF
(token)732 5161 MS
[83 0 0 -83 0 0]/Times-Roman MF
(", ")982 5161 MS
[83 0 0 -83 0 0]/Courier MF
(quoted-string)1094 5161 MS
[83 0 0 -83 0 0]/Times-Roman MF
(", ")1744 5161 MS
[83 0 0 -83 0 0]/Courier MF
(field-name)1856 5161 MS
[83 0 0 -83 0 0]/Times-Roman MF
(", and ")2356 5161 MS
[83 0 0 -83 0 0]/Courier MF
(URI)2609 5161 MS
[83 0 0 -83 0 0]/Times-Roman MF
(" in this document are to be interpreted as described)2759 5161 MS
(in )340 5262 MS
0.105 g
(RFC 2068)425 5262 MS
0 g
([)770 5262 MS
(7)798 5262 MS
(].)840 5262 MS
(The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT",)340 5460 MS
("RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in )340 5558 MS
0.105 g
(RFC 2119)3835 5558 MS
0 g
([)4180 5558 MS
(9)4208 5558 MS
(].)4250 5558 MS
showpage
%%Page: 3 3
13.238 780.059 translate 72 600 div dup neg scale
0 0 transform .25 add round .25 sub exch .25 add round .25 sub exch itransform translate
[83 0 0 -83 0 0]/Times-Roman MF
(INTERNET-DRAFT)340 629 MS
(Mandatory)2258 629 MS
(Friday, August 07, 1998)3730 629 MS
(Frystyk, et al)340 5831 MS
([Page )4259 5831 MS
(3)4470 5831 MS
(])4512 5831 MS
(This proposal does not rely on particular features defined in URLs [)340 777 MS
(3)2596 777 MS
(] that cannot potentially be expressed using URNs \(see)2638 777 MS
(section )340 875 MS
(9)596 875 MS
(\). Therefore, the more generic term URI[)638 875 MS
(2)2000 875 MS
(] is used throughout the specification.)2042 875 MS
[150 0 0 -150 0 0]/Times-Bold MF
(3)340 1188 MS (.)415 1188 MS ( )453 1188 MS
(E)513 1188 MS (x)613 1188 MS (t)688 1188 MS (e)738 1188 MS (n)805 1188 MS (s)888 1188 MS (i)946 1188 MS (o)988 1188 MS (n)1063 1188 MS ( )1146 1188 MS (D)1184 1188 MS (e)1292 1188 MS (c)1359 1188 MS (l)1426 1188 MS (a)1468 1188 MS (r)1543 1188 MS
(a)1610 1188 MS (t)1685 1188 MS (i)1735 1188 MS (o)1777 1188 MS (n)1852 1188 MS (s)1935 1188 MS
[83 0 0 -83 0 0]/Times-Roman MF
(An extension declaration can be used to indicate that an extension has been applied to a message and possibly to reserve a)340 1374 MS
(part of the header namespace identified by a header field prefix \(see )340 1472 MS
(3.1)2620 1472 MS
(\).)2725 1472 MS
(This specification does not define any ramifications of applying an extension to a message nor whether two extensions can or)340 1670 MS
(cannot logically coexist within the same message. It is strictly a framework for describing which extensions have been applied)340 1768 MS
(and what the ultimate recipient either must or may do in order to properly interpret any extension declarations within that)340 1866 MS
(message.)340 1964 MS
(The grammar for an extension declaration is as follows:)340 2162 MS
[83 0 0 -83 0 0]/Courier MF
(    ext-decl        = <"> URI <"> )340 2297 MS
(";" namespace )2040 2297 MS
([ ext-params ])2740 2297 MS
(    ext-params)340 2385 MS
(      = *\( ext-extension \))1040 2385 MS
(    namespace    )340 2561 MS
(   = )1190 2561 MS
("ns" "=" )1440 2561 MS
(header-)1890 2561 MS
(prefix)2240 2561 MS
(    header-prefix   = 2*DIGIT "-")340 2649 MS
(    ext-extension   = )340 2737 MS
(";" token)1440 2737 MS
( [ "=" \( token | quoted-string)1890 2737 MS
( \) ])3390 2737 MS
[83 0 0 -83 0 0]/Times-Roman MF
(An extension is identified by a URI. Extension identifier URIs can be either relative or absolute. Relative extension identifiers)340 2888 MS
(MUST specify header-fields defined in an IETF RFC)340 2986 MS
( )2114 2986 MS
(\(see )2135 2986 MS
0.105 g
(RFC 1808)2290 2986 MS
0 g
([)2635 2986 MS
(4)2663 2986 MS
(]\). Examples of extension declarations are)2705 2986 MS
[83 0 0 -83 0 0]/Courier MF
(    "Content-FooBar")340 3121 MS
(    "New-Registered-Header")340 3209 MS
(    "http://www.temporary.com/extension"; ns=33-)340 3297 MS
[83 0 0 -83 0 0]/Times-Roman MF
(An extension declaration can be extended through the use of one or more )340 3448 MS
[83 0 0 -83 0 0]/Courier MF
(ext-extension)2791 3448 MS
[83 0 0 -83 0 0]/Times-Roman MF
( parameters. Unrecognized)3441 3448 MS
[83 0 0 -83 0 0]/Courier MF
(ext-extension)340 3549 MS
[83 0 0 -83 0 0]/Times-Roman MF
( parameters SHOULD be ignored and MUST NOT be removed by proxies when forwarding the extension)990 3549 MS
(declaration.)340 3650 MS
[133 0 0 -133 0 0]/Times-Bold MF
(3)340 3948 MS (.)407 3948 MS
(1)440 3948 MS ( )507 3948 MS
(Header Field Prefixes)567 3948 MS
[83 0 0 -83 0 0]/Times-Roman MF
(The )340 4130 MS
[83 0 0 -83 0 0]/Courier MF
(header-prefix)491 4130 MS
[83 0 0 -83 0 0]/Times-Roman MF
( )1141 4130 MS
(are dynamically ge)1162 4130 MS
(nerated header field prefix strings that )1790 4130 MS
(can be used to indicate that all header fields)3077 4130 MS
(in the message matching the )340 4231 MS
[83 0 0 -83 0 0]/Courier MF
(header-prefix)1296 4231 MS
[83 0 0 -83 0 0]/Times-Roman MF
( value using string prefix-matching are introduced by this extension instance.)1946 4231 MS
(This allows an extension instance to dynamically reserve a subspace of the header space in a protocol message in order to)340 4332 MS
(prevent header field name clashes.)340 4430 MS
(Linear white space \(LWS\) MUST NOT be used between the )340 4628 MS
(digits)2375 4628 MS
( and the "-". The format of the prefix using a combination)2559 4628 MS
(of digits and the dash ")340 4726 MS
(-" guarantees that no extension declaration can reserve the whole header field name)1106 4726 MS
( space.)3877 4726 MS
(Prefixes are primarily intended to avoid header field name conflicts and to allow multiple instances of a single extension using)340 4924 MS
(its own header fields to be applied to the same message without conflicting with each other.)340 5022 MS
(Agents SHOULD NOT reuse )340 5220 MS
[83 0 0 -83 0 0]/Courier MF
(header-prefix)1340 5220 MS
[83 0 0 -83 0 0]/Times-Roman MF
( values in the same message unless explicitly allowed by the extension \(see)1990 5220 MS
(section )340 5321 MS
(4.1)596 5321 MS
( for a discussion of the ultimate recipient of an extension declaration\).)701 5321 MS
(Examples of )340 5519 MS
[83 0 0 -83 0 0]/Courier MF
(header-prefix)777 5519 MS
[83 0 0 -83 0 0]/Times-Roman MF
( values are)1427 5519 MS
showpage
%%Page: 4 4
13.238 780.059 translate 72 600 div dup neg scale
0 0 transform .25 add round .25 sub exch .25 add round .25 sub exch itransform translate
[83 0 0 -83 0 0]/Times-Roman MF
(INTERNET-DRAFT)340 629 MS
(Mandatory)2258 629 MS
(Friday, August 07, 1998)3730 629 MS
(Frystyk, et al)340 5831 MS
([Page )4259 5831 MS
(4)4470 5831 MS
(])4512 5831 MS
[83 0 0 -83 0 0]/Courier MF
(    1234-)340 764 MS
(    546-)340 852 MS
(    234345653-)340 940 MS
[83 0 0 -83 0 0]/Times-Roman MF
(Old applications may introduce header fields independent of this extension mechanism, potentially conflicting with header)340 1091 MS
(fields introduced by the prefix mechanism. In order to minimize this risk, prefixes MUST contain at least 2 digits.)340 1189 MS
[150 0 0 -150 0 0]/Times-Bold MF
(4)340 1502 MS (.)415 1502 MS ( )453 1502 MS
(E)513 1502 MS (x)613 1502 MS (t)688 1502 MS (e)738 1502 MS (n)805 1502 MS (s)888 1502 MS (i)946 1502 MS (o)988 1502 MS (n)1063 1502 MS ( )1146 1502 MS (H)1184 1502 MS (e)1301 1502 MS (a)1368 1502 MS (d)1443 1502 MS (e)1526 1502 MS (r)1593 1502 MS
( )1657 1502 MS (F)1695 1502 MS (i)1787 1502 MS (e)1829 1502 MS (l)1896 1502 MS (d)1938 1502 MS (s)2021 1502 MS
[83 0 0 -83 0 0]/Times-Roman MF
(This proposal introduces two types of extension declaration strength: m)340 1688 MS
(andatory)2716 1688 MS
( and )3006 1688 MS
(optional,)3168 1688 MS
( and two types of extension)3462 1688 MS
(declaration scope: hop-by-hop and end-to-end \(see section )340 1786 MS
(4.1)2304 1786 MS
( and )2409 1786 MS
(4.2)2571 1786 MS
(\).)2676 1786 MS
(A mandatory extension declaration indicates that the ultimate recipient MUST consult and adhere to the rules given by the)340 1984 MS
(extension when processing the message or report an error \(see section )340 2082 MS
(5)2680 2082 MS
( and )2722 2082 MS
(8)2884 2082 MS
(\).)2926 2082 MS
(An optional extension declaration indicates that the ultimate recipient of the extension MAY consult and adhere to the rules)340 2280 MS
(given by the extension when processing the message, or ignore the extension declaration completely. An agent may not be)340 2378 MS
(able to distinguish whether the ultimate recipient does not understand an extension referred to by an optional extension or)340 2476 MS
(simply ignores the extension declaration.)340 2574 MS
(The combination of the declaration strength and scope defines a 2x2 matrix which is distinguished by four new general HTTP)340 2772 MS
(header fields: )340 2870 MS
[83 0 0 -83 0 0]/Courier MF
(Man)811 2870 MS
[83 0 0 -83 0 0]/Times-Roman MF
(, )961 2870 MS
[83 0 0 -83 0 0]/Courier MF
(Opt)1003 2870 MS
[83 0 0 -83 0 0]/Times-Roman MF
(, )1153 2870 MS
[83 0 0 -83 0 0]/Courier MF
(C-Man)1195 2870 MS
[83 0 0 -83 0 0]/Times-Roman MF
(, and )1445 2870 MS
[83 0 0 -83 0 0]/Courier MF
(C-Opt.)1628 2870 MS
[83 0 0 -83 0 0]/Times-Roman MF
( \(See section )1928 2870 MS
(4.1)2374 2870 MS
( and )2479 2870 MS
(4.2)2641 2870 MS
(, and appendix )2746 2870 MS
(14)3255 2870 MS
( for a table of interactions with)3339 2870 MS
(origin servers and proxies.\))340 2971 MS
(The header fields are general header fields as they describe which extensions actually are applied to an  HTTP message.)340 3169 MS
(Optional declarations MAY be applied to any HTTP message without any change to existing HTTP semantics. Mandatory)340 3267 MS
(declarations MUST be applied to a request message as described in section )340 3365 MS
(5)2860 3365 MS
( and to a response message as described in)2902 3365 MS
(section )340 3463 MS
(6)596 3463 MS
(.)638 3463 MS
[133 0 0 -133 0 0]/Times-Bold MF
(4)340 3761 MS (.)407 3761 MS
(1)440 3761 MS ( )507 3761 MS
(End-to-End Extensions)567 3761 MS
[83 0 0 -83 0 0]/Times-Roman MF
(End-to-end declarations MUST be transmitted to the ultimate recipient of the declaration. The )340 3943 MS
[83 0 0 -83 0 0]/Courier MF
(Man)3489 3943 MS
[83 0 0 -83 0 0]/Times-Roman MF
( and the )3639 3943 MS
[83 0 0 -83 0 0]/Courier MF
(Opt)3923 3943 MS
[83 0 0 -83 0 0]/Times-Roman MF
( general)4073 3943 MS
(header fields are end-to-end header fields and are defined as follows:)340 4044 MS
[83 0 0 -83 0 0]/Courier MF
(    mandatory       = "Man" ":" 1#ext-decl)340 4179 MS
(    optional        = "Opt" ":" 1#ext-decl)340 4267 MS
[83 0 0 -83 0 0]/Times-Roman MF
(For example)340 4418 MS
[83 0 0 -83 0 0]/Courier MF
(    HTTP/1.1 200 OK)340 4553 MS
(    Content-Length: 421)340 4641 MS
(    Opt: "http://www.digest.org/Digest"; ns=55-)340 4729 MS
(    55-digest: "snfksjgor2tsajkt52")340 4817 MS
(    ...)340 4905 MS
[83 0 0 -83 0 0]/Times-Roman MF
(If a proxy is the ultimate recipient of a mandatory end-to-end extension declaration then it MUST handle that extension)340 5056 MS
(declaration as described in section )340 5154 MS
(5)1503 5154 MS
(. The proxy SHOULD remove all parts of the extension declaration from the message)1545 5154 MS
(before forwarding it.)340 5252 MS
showpage
%%Page: 5 5
13.238 780.059 translate 72 600 div dup neg scale
0 0 transform .25 add round .25 sub exch .25 add round .25 sub exch itransform translate
[83 0 0 -83 0 0]/Times-Roman MF
(INTERNET-DRAFT)340 629 MS
(Mandatory)2258 629 MS
(Friday, August 07, 1998)3730 629 MS
(Frystyk, et al)340 5831 MS
([Page )4259 5831 MS
(5)4470 5831 MS
(])4512 5831 MS
[133 0 0 -133 0 0]/Times-Bold MF
(4)340 827 MS (.)407 827 MS
(2)440 827 MS ( )507 827 MS
(Hop-by-Hop Extensions)567 827 MS
[83 0 0 -83 0 0]/Times-Roman MF
(Hop-by-hop extension declarations are meaningful only for a single transport-level connection. The )340 1009 MS
[83 0 0 -83 0 0]/Courier MF
(C)3668 1009 MS
(-Man)3718 1009 MS
[83 0 0 -83 0 0]/Times-Roman MF
( and the )3918 1009 MS
[83 0 0 -83 0 0]/Courier MF
(C-Opt)4202 1009 MS
[83 0 0 -83 0 0]/Times-Roman MF
(general header field are hop-by-hop header fields and MUST NOT be communicated by proxies over further connections.)340 1110 MS
(The two headers have the following grammar:)340 1208 MS
[83 0 0 -83 0 0]/Courier MF
(    c-mandatory     = "C-Man" ":" 1#ext-decl)340 1343 MS
(    c-optional      = "C-Opt" ":" 1#ext-decl)340 1431 MS
[83 0 0 -83 0 0]/Times-Roman MF
(For example)340 1582 MS
[83 0 0 -83 0 0]/Courier MF
(    GET / HTTP/1.1)340 1717 MS
(    Host: some.host)340 1805 MS
(    C-Man: "http://www.digest.org/ProxyAuth"; Credentials="g5gj262jdw@4df")340 1893 MS
(    Connection: C-Man)340 1981 MS
[83 0 0 -83 0 0]/Times-Roman MF
(In HTTP/1.1, the )340 2132 MS
[83 0 0 -83 0 0]/Courier MF
(C-Man)933 2132 MS
[83 0 0 -83 0 0]/Times-Roman MF
( and the )1183 2132 MS
[83 0 0 -83 0 0]/Courier MF
(C-Opt)1467 2132 MS
[83 0 0 -83 0 0]/Times-Roman MF
( header field MUST be protected by a )1717 2132 MS
[83 0 0 -83 0 0]/Courier MF
(Connection)3000 2132 MS
[83 0 0 -83 0 0]/Times-Roman MF
( header. That is, the header)3500 2132 MS
(fields are to be included  as )340 2233 MS
[83 0 0 -83 0 0]/Courier MF
(Connection)1272 2233 MS
[83 0 0 -83 0 0]/Times-Roman MF
( header directives \(see section [)1772 2233 MS
(7)2819 2233 MS
(], section 14.10\).)2861 2233 MS
(An agent MUST NOT send the )340 2434 MS
[83 0 0 -83 0 0]/Courier MF
(C-Man)1402 2434 MS
[83 0 0 -83 0 0]/Times-Roman MF
( or the )1652 2434 MS
[83 0 0 -83 0 0]/Courier MF
(C-Opt)1886 2434 MS
[83 0 0 -83 0 0]/Times-Roman MF
( header field to an HTTP/1.0 proxy as it does not obey the HTTP/1.1)2136 2434 MS
(rules for parsing the )340 2535 MS
[83 0 0 -83 0 0]/Courier MF
(Connection)1027 2535 MS
[83 0 0 -83 0 0]/Times-Roman MF
( header field \(see [)1527 2535 MS
(7)2147 2535 MS
(]\).)2189 2535 MS
[150 0 0 -150 0 0]/Times-Bold MF
(5)340 2851 MS (.)415 2851 MS ( )453 2851 MS
(M)513 2851 MS (a)655 2851 MS (n)730 2851 MS (d)813 2851 MS (a)896 2851 MS (t)971 2851 MS (o)1021 2851 MS (r)1096 2851 MS (y)1163 2851 MS ( )1239 2851 MS (H)1277 2851 MS (T)1394 2851 MS (T)1494 2851 MS (P)1594 2851 MS ( )1678 2851 MS (R)1716 2851 MS
(e)1824 2851 MS (q)1891 2851 MS (u)1974 2851 MS (e)2057 2851 MS (s)2124 2851 MS (t)2182 2851 MS (s)2232 2851 MS
[83 0 0 -83 0 0]/Times-Roman MF
(An HTTP request is called a mandatory request if it includes at least one mandatory extension declaration \(using the )340 3037 MS
[83 0 0 -83 0 0]/Courier MF
(Man)4225 3037 MS
[83 0 0 -83 0 0]/Times-Roman MF
( or)4375 3037 MS
(the )340 3138 MS
[83 0 0 -83 0 0]/Courier MF
(C-Man)462 3138 MS
[83 0 0 -83 0 0]/Times-Roman MF
( header fields\). The method name of a mandatory request MUST be prefixed by  ")712 3138 MS
[83 0 0 -83 0 0]/Courier MF
(M-)3442 3138 MS
[83 0 0 -83 0 0]/Times-Roman MF
(". For example, a client might)3542 3138 MS
(express the binding rights-management constraints in an HTTP PUT request as follows:)340 3239 MS
[83 0 0 -83 0 0]/Courier MF
(    M-PUT /a-resource HTTP/1.1)340 3374 MS
(    Man: "http://www.copyright.org/rights-management"; ns=43-)340 3462 MS
(    43-copyright: http://www.copyright.org/COPYRIGHT.html)340 3550 MS
(    43-contributions: http://www.copyright.org/PATCHES.html)340 3638 MS
(    Host: www.w3.org)340 3726 MS
(    Content-Length: 1203)340 3814 MS
(    Content-Type: text/html)340 3902 MS
(    <!doctype html ...)340 4078 MS
[83 0 0 -83 0 0]/Times-Roman MF
(An HTTP server MUST NOT return a 2xx )340 4229 MS
[83 0 0 -83 0 0]/Courier MF
(status-code)1785 4229 MS
[83 0 0 -83 0 0]/Times-Roman MF
( without understanding and obeying all mandatory extension)2335 4229 MS
(declaration\(s\) in a mandatory request. A mandatory HTTP request invalidates cached entries as described in [)340 4330 MS
(7)3983 4330 MS
(], section)4025 4330 MS
(13.10.)340 4428 MS
(The ultimate recipient of a mandatory HTTP request with the ")340 4626 MS
[83 0 0 -83 0 0]/Courier MF
(M-)2432 4626 MS
[83 0 0 -83 0 0]/Times-Roman MF
(" prefix on the method name MUST process the request by)2532 4626 MS
(performing the following actions in the order they are listed below:)340 4727 MS
(1)490 4875 MS (.)532 4875 MS ( )553 4875 MS
(Identify all mandatory extension declarations \(both hop-by-hop and end-to-end\); the server MAY ignore optional)730 4875 MS
(declarations without affecting the result of the transaction;)730 4973 MS
(2)490 5071 MS (.)532 5071 MS ( )553 5071 MS
(If one or more mandatory extension declarations are present )730 5071 MS
(and the )2748 5071 MS
(following is )3011 5071 MS
(not )3428 5071 MS
(true)3555 5071 MS
( then respond with a )3684 5071 MS
(505)4377 5071 MS
(\(HTTP Version Not Supported\):)730 5169 MS
(o)790 5267 MS ( )832 5267 MS
(T)940 5267 MS
(he )992 5267 MS
(request)1091 5267 MS
( )1331 5267 MS
(MUST NOT )1352 5267 MS
(come from a HTTP/1.0 client)1798 5267 MS
(; and)2781 5267 MS
(o)790 5365 MS ( )832 5365 MS
(The request )940 5365 MS
(MUST NOT )1352 5365 MS
(have )1798 5365 MS
(any )1975 5365 MS
(HTTP/1.0 )2114 5365 MS
(client)2474 5365 MS
(s)2658 5365 MS
( )2690 5365 MS
(indicated by th)2711 5365 MS
(e HTTP/1.1)3204 5365 MS
( )3601 5365 MS
[83 0 0 -83 0 0]/Courier MF
(Via)3622 5365 MS
[83 0 0 -83 0 0]/Times-Roman MF
( header field.)3772 5365 MS
(3)490 5466 MS (.)532 5466 MS ( )553 5466 MS
(If 2\) is fulfilled then evaluate )730 5466 MS
(and process the extensions identified in 1\) or if the extension declarations do not)1720 5466 MS
(match the policy for accessing the resource then respond with a 510 \()730 5564 MS
(Not Extended)3030 5564 MS
(\) )3490 5564 MS
(status-code)3539 5564 MS
( \(see section )3912 5564 MS
(8)4344 5564 MS
(\);)4386 5564 MS
showpage
%%Page: 6 6
13.238 780.059 translate 72 600 div dup neg scale
0 0 transform .25 add round .25 sub exch .25 add round .25 sub exch itransform translate
[83 0 0 -83 0 0]/Times-Roman MF
(INTERNET-DRAFT)340 629 MS
(Mandatory)2258 629 MS
(Friday, August 07, 1998)3730 629 MS
(Frystyk, et al)340 5831 MS
([Page )4259 5831 MS
(6)4470 5831 MS
(])4512 5831 MS
(4)490 777 MS (.)532 777 MS ( )553 777 MS
(If the evaluat)730 777 MS
(ion in )1167 777 MS
(3)1379 777 MS
(\) is)1421 777 MS
( successful )1525 777 MS
(\(not resulting in a 510 \(Not Extended\) status code\) )1906 777 MS
(then )3614 777 MS
(strip)3777 777 MS
( the ")3925 777 MS
[83 0 0 -83 0 0]/Courier MF
(M-)4103 777 MS
[83 0 0 -83 0 0]/Times-Roman MF
(" prefix)4203 777 MS
(from the method name and process the reminder of the request according to the semantics of the existing)730 878 MS
(HTTP/1.1 method name as defined in [)730 976 MS
(7)2031 976 MS
(].)2073 976 MS
(5)490 1074 MS (.)532 1074 MS ( )553 1074 MS
(If )730 1074 MS
(one or more mandatory extension declarations were present in the original request )806 1074 MS
(and )3553 1074 MS
(the evaluation in 3\) was)3694 1074 MS
(successful )730 1172 MS
(then the server MUST reply by sending )1090 1172 MS
(a )2424 1172 MS
(102 \(Extended\) followed by a HTTP/1.1 )2482 1172 MS
(response)3856 1172 MS
( containing)4147 1172 MS
(the appropriate HTTP header fields)730 1270 MS
(.)1913 1270 MS
(An ")340 1418 MS
[83 0 0 -83 0 0]/Courier MF
(M-)496 1418 MS
[83 0 0 -83 0 0]/Times-Roman MF
(" aware proxy  that does not act as the ultimate recipient of a mandatory extension declaration MUST NOT remove)596 1418 MS
(the declaration or the ")340 1519 MS
[83 0 0 -83 0 0]/Courier MF
(M-)1101 1519 MS
[83 0 0 -83 0 0]/Times-Roman MF
(" method name prefix when forwarding the message.)1201 1519 MS
(An agent receiving an HTTP/1.0 \(or lower-version\) message that includes a )340 1720 MS
[83 0 0 -83 0 0]/Courier MF
(Connection)2876 1720 MS
[83 0 0 -83 0 0]/Times-Roman MF
( header MUST, for each)3376 1720 MS
(connection-token)340 1821 MS
( in this field, remove and ignore any header field\(s\) from the message with the same name as the connection-)915 1821 MS
(token. Any ")340 1919 MS
[83 0 0 -83 0 0]/Courier MF
(M-)762 1919 MS
[83 0 0 -83 0 0]/Times-Roman MF
(" method name prefix introduced as a result of  discarded hop-by-hop extensions MUST be ignored and)862 1919 MS
(removed by a proxy when forwarding the message.)340 2020 MS
(HTTP proxies that do not understand the ")340 2218 MS
[83 0 0 -83 0 0]/Courier MF
(M-)1757 2218 MS
[83 0 0 -83 0 0]/Times-Roman MF
(" method name prefix SHOULD return 501 \(Not Implemented\) or turn)1857 2218 MS
(themselves into a tunnel \([)340 2319 MS
(7)1218 2319 MS
(]\) in which case they do not take any part in the communication.)1260 2319 MS
(The ")340 2517 MS
[83 0 0 -83 0 0]/Courier MF
(M-)526 2517 MS
[83 0 0 -83 0 0]/Times-Roman MF
(" prefix is reserved by this proposal and MUST NOT be used by other HTTP extensions.)626 2517 MS
[150 0 0 -150 0 0]/Times-Bold MF
(6)340 2833 MS (.)415 2833 MS ( )453 2833 MS
(M)513 2833 MS (a)655 2833 MS (n)730 2833 MS (d)813 2833 MS (a)896 2833 MS (t)971 2833 MS (o)1021 2833 MS (r)1096 2833 MS (y)1163 2833 MS ( )1239 2833 MS (H)1277 2833 MS (T)1394 2833 MS (T)1494 2833 MS (P)1594 2833 MS ( )1678 2833 MS (R)1716 2833 MS
(e)1824 2833 MS (s)1891 2833 MS (p)1949 2833 MS (o)2032 2833 MS (n)2107 2833 MS (s)2190 2833 MS (e)2248 2833 MS (s)2315 2833 MS
[83 0 0 -83 0 0]/Times-Roman MF
(A server SHOULD )340 3019 MS
(NOT )1001 3019 MS
(include mandatory extension declaration)1194 3019 MS
(s)2541 3019 MS
( in )2573 3019 MS
(an )2679 3019 MS
(HTTP )2778 3019 MS
(response )3010 3019 MS
(unless )3322 3019 MS
(it is )3549 3019 MS
(respon)3692 3019 MS
(ding)3914 3019 MS
( to )4061 3019 MS
(a)4168 3019 MS
(mandatory )340 3117 MS
(HTTP )714 3117 MS
(request)946 3117 MS
(. )1186 3117 MS
(A server MAY include )1228 3117 MS
(o)2011 3117 MS
(ptional extension declarations )2053 3117 MS
(in any HTTP response )3066 3117 MS
(\(see section )3834 3117 MS
(4)4245 3117 MS
(\).)4287 3117 MS
(If a client receives an HTTP response which contains a Mandatory extension declaration which it does not understand or does)340 3315 MS
(not want to use, it SHOULD treat it as if the message was of type ")340 3413 MS
[83 0 0 -83 0 0]/Courier MF
(application/octet-stream)2564 3413 MS
[83 0 0 -83 0 0]/Times-Roman MF
(".)3764 3413 MS
[150 0 0 -150 0 0]/Times-Bold MF
(7)340 3729 MS (.)415 3729 MS ( )453 3729 MS
(1)513 3729 MS (0)588 3729 MS (2)663 3729 MS ( )738 3729 MS (E)776 3729 MS (x)876 3729 MS (t)951 3729 MS (e)1001 3729 MS (n)1068 3729 MS (d)1151 3729 MS (e)1234 3729 MS (d)1301 3729 MS
[83 0 0 -83 0 0]/Times-Roman MF
/IsChar{exch/CharStrings get exch known}bd/MapCh{3 -1 roll/Encoding get 3 1
roll put}bd/MapDegree{dup 16#b0 exch/degree IsChar{/degree}{/ring}ifelse MapCh}
bd/MapBB{dup 16#a6 exch/brokenbar IsChar{/brokenbar}{/bar}ifelse MapCh}bd
/reencode{findfont begin currentdict dup length dict begin{1 index/FID ne{def}
{pop pop}ifelse}forall/FontName exch def dup length 0 ne{/Encoding Encoding 256
array copy def 0 exch{dup type/nametype eq{Encoding 2 index 2 index put pop 1
add}{exch pop}ifelse}forall}if pop currentdict dup end end/FontName get exch
definefont dup MapDegree MapBB}bd/LATENC[0/grave/acute/circumflex/tilde/macron
/breve/dotaccent/dieresis/ring/cedilla/hungarumlaut/ogonek/caron/dotlessi/fi/fl
/Lslash/lslash/Zcaron/zcaron/minus/.notdef/.notdef/.notdef/.notdef/.notdef
/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/space/exclam/quotedbl
/numbersign/dollar/percent/ampersand/quotesingle/parenleft/parenright/asterisk
/plus/comma/hyphen/period/slash/zero/one/two/three/four/five/six/seven/eight
/nine/colon/semicolon/less/equal/greater/question/at/A/B/C/D/E/F/G/H/I/J/K/L/M
/N/O/P/Q/R/S/T/U/V/W/X/Y/Z/bracketleft/backslash/bracketright/asciicircum
/underscore/grave/a/b/c/d/e/f/g/h/i/j/k/l/m/n/o/p/q/r/s/t/u/v/w/x/y/z/braceleft
/bar/braceright/asciitilde/.notdef/.notdef/.notdef/quotesinglbase/florin
/quotedblbase/ellipsis/dagger/daggerdbl/circumflex/perthousand/Scaron
/guilsinglleft/OE/.notdef/.notdef/.notdef/.notdef/quoteleft/quoteright
/quotedblleft/quotedblright/bullet/endash/emdash/tilde/trademark/scaron
/guilsinglright/oe/.notdef/.notdef/Ydieresis/.notdef/exclamdown/cent/sterling
/currency/yen/brokenbar/section/dieresis/copyright/ordfeminine/guillemotleft
/logicalnot/hyphen/registered/macron/degree/plusminus/twosuperior/threesuperior
/acute/mu/paragraph/periodcentered/cedilla/onesuperior/ordmasculine
/guillemotright/onequarter/onehalf/threequarters/questiondown/Agrave/Aacute
/Acircumflex/Atilde/Adieresis/Aring/AE/Ccedilla/Egrave/Eacute/Ecircumflex
/Edieresis/Igrave/Iacute/Icircumflex/Idieresis/Eth/Ntilde/Ograve/Oacute
/Ocircumflex/Otilde/Odieresis/multiply/Oslash/Ugrave/Uacute/Ucircumflex
/Udieresis/Yacute/Thorn/germandbls/agrave/aacute/acircumflex/atilde/adieresis
/aring/ae/ccedilla/egrave/eacute/ecircumflex/edieresis/igrave/iacute
/icircumflex/idieresis/eth/ntilde/ograve/oacute/ocircumflex/otilde/odieresis
/divide/oslash/ugrave/uacute/ucircumflex/udieresis/yacute/thorn/ydieresis]def
LATENC /_Times-Roman /Times-Roman reencode
[83 0 0 -83 0 0]/_Times-Roman MF
(The server understands and is willing to comply with the client\222s extended request)340 3915 MS
( using mandatory extension declara)3069 3915 MS
(t)4242 3915 MS
(ion)4265 3915 MS
(s)4371 3915 MS
(\(section)340 4013 MS
( )603 4013 MS
(4)624 4013 MS
(\). The )666 4013 MS
(102 )887 4013 MS
(\(Extended\) )1034 4013 MS
(response is followed by a normal HTTP/1.1 style response indicating the final status code)1425 4013 MS
(and parameters of the response.)340 4111 MS
(The 102 \(Extended\) status code prevents that existing HTTP/1.1 servers using non-conformant CGI scripts )340 4309 MS
(mistakenly give)3916 4309 MS
(the false impression )340 4407 MS
(that the extended request was fulfilled by )1023 4407 MS
(responding with a 200 \(Ok\) response.)2410 4407 MS
[150 0 0 -150 0 0]/Times-Bold MF
(8)340 4720 MS (.)415 4720 MS ( )453 4720 MS
(5)513 4720 MS (1)588 4720 MS (0)663 4720 MS ( )738 4720 MS (N)776 4720 MS (o)884 4720 MS (t)959 4720 MS ( )1009 4720 MS (E)1047 4720 MS (x)1147 4720 MS (t)1222 4720 MS (e)1272 4720 MS (n)1339 4720 MS (d)1422 4720 MS (e)1505 4720 MS (d)1572 4720 MS
[83 0 0 -83 0 0]/_Times-Roman MF
(The policy for accessing the resource has not been met in the request. The server SHOULD send back all the information)340 4906 MS
(necessary for the client to issue an extended request. It is outside the scope of this specification to specify how the extensions)340 5004 MS
(inform the client.)340 5102 MS
(If the )340 5300 MS
(510 )538 5300 MS
(response )685 5300 MS
(contains in)997 5300 MS
(formation about extensions that were )1358 5300 MS
(not )2607 5300 MS
(present in the initial request then the client MAY)2734 5300 MS
(repeat the request if it has reason to believe it can fulfill the extension policy by modifyin)340 5398 MS
(g)3305 5398 MS
( the request )3346 5398 MS
(according to the)3750 5398 MS
(information provided in the 510 response.)340 5496 MS
( Otherwise the client MAY present any entity included in the 510 response to the)1735 5496 MS
(user, since that entity may include relevant diagnostic information.)340 5594 MS
showpage
%%Page: 7 7
13.238 780.059 translate 72 600 div dup neg scale
0 0 transform .25 add round .25 sub exch .25 add round .25 sub exch itransform translate
[83 0 0 -83 0 0]/Times-Roman MF
(INTERNET-DRAFT)340 629 MS
(Mandatory)2258 629 MS
(Friday, August 07, 1998)3730 629 MS
(Frystyk, et al)340 5831 MS
([Page )4259 5831 MS
(7)4470 5831 MS
(])4512 5831 MS
[150 0 0 -150 0 0]/Times-Bold MF
(9)340 1288 MS (.)415 1288 MS ( )453 1288 MS
(P)513 1288 MS (u)605 1288 MS (b)688 1288 MS (l)771 1288 MS (i)813 1288 MS (s)855 1288 MS (h)913 1288 MS (i)996 1288 MS (n)1038 1288 MS (g)1121 1288 MS ( )1196 1288 MS (a)1234 1288 MS (n)1309 1288 MS ( )1392 1288 MS (E)1430 1288 MS (x)1530 1288 MS
(t)1605 1288 MS (e)1655 1288 MS (n)1722 1288 MS (s)1805 1288 MS (i)1863 1288 MS (o)1905 1288 MS (n)1980 1288 MS
[83 0 0 -83 0 0]/Times-Roman MF
(While the protocol extension definition should be published at the address of the extension identifier, this is not a requirement)340 1474 MS
(of this specification. The only absolute requirement is that )340 1572 MS
(extension )2294 1572 MS
(identifiers )2632 1572 MS
(MUST )2989 1572 MS
(be )3242 1572 MS
(globally unique identifiers )3342 1572 MS
(and that)4237 1572 MS
(distinct names be used for distinct semantics. For example, one way to achieve this is to use a )340 1670 MS
[83 0 0 -83 0 0]/Times-Italic MF
(mid)3466 1670 MS
[83 0 0 -83 0 0]/Times-Roman MF
(, )3591 1670 MS
[83 0 0 -83 0 0]/Times-Italic MF
(cid)3633 1670 MS
[83 0 0 -83 0 0]/Times-Roman MF
([)3735 1670 MS
(8)3763 1670 MS
(], or )3805 1670 MS
[83 0 0 -83 0 0]/Times-Italic MF
(uuid)3966 1670 MS
[83 0 0 -83 0 0]/Times-Roman MF
([)4115 1670 MS
(12)4143 1670 MS
(] URI.)4227 1670 MS
(Likewise, applications are not required to attempt resolving extension identifiers included in extension declarations. )340 1868 MS
(The only)4208 1868 MS
(absolute requirement is that an application )340 1966 MS
(MUST NOT claim conformance with an extension that it does not recognize)1770 1966 MS
(regardless of whether it )340 2064 MS
(has)1141 2064 MS
( tried to resolve the extension identifier or not.)1251 2064 MS
( This document does not provide any policy for how)2796 2064 MS
(long or how often an application should attempt to resolve an extension identifier.)340 2162 MS
(The association between the extension identifier and the specification might be made by distributing a specification, which)340 2360 MS
(references the extension identifier.)340 2458 MS
(It is strongly recommended that the integrity and persistence of the extension identifier be maintained and kept unquestioned)340 2656 MS
(throughout the lifetime of the extension. Care should be taken not to distribute conflicting specifications that reference the)340 2754 MS
(same name. Even when )340 2852 MS
(an )1139 2852 MS
(extension specification)1238 2852 MS
( )2000 2852 MS
(is)2021 2852 MS
( made available at the )2076 2852 MS
(address)2821 2852 MS
( of the URI)3071 2852 MS
(, care must be taken that the)3447 2852 MS
(specification made available at that address does not change significantly over time. One agent may associate the identifier)340 2950 MS
(with the old semantics, and another might associate it with the new semantics.)340 3048 MS
(The extension definition may be made available in different representations ranging from)340 3246 MS
(o)490 3394 MS ( )532 3394 MS
(a human-readable specification defining the extension semantics,)640 3394 MS
(o)490 3492 MS ( )532 3492 MS
(downloadable code which implements the semantics defined by the extension,)640 3492 MS
(o)490 3590 MS ( )532 3590 MS
(a formal interface description provided by the extension, to)640 3590 MS
(o)490 3688 MS ( )532 3688 MS
(a machine-readable specification defining the extension semantics.)640 3688 MS
(For example, a software component that implements the specification may reside at the same address as a human-readable)340 3836 MS
(specification \(distinguished by content negotiation\). The human-readable representation serves to document the extension and)340 3934 MS
(encourage deployment, while the software component allows clients and servers to be dynamically extended.)340 4032 MS
[150 0 0 -150 0 0]/Times-Bold MF
(1)340 4345 MS (0)415 4345 MS (.)490 4345 MS ( )528 4345 MS
(S)588 4345 MS (e)671 4345 MS (c)738 4345 MS (u)805 4345 MS (r)888 4345 MS (i)955 4345 MS (t)997 4345 MS (y)1047 4345 MS ( )1123 4345 MS (C)1161 4345 MS (o)1269 4345 MS (n)1344 4345 MS (s)1427 4345 MS (i)1485 4345 MS (d)1527 4345 MS (e)1610 4345 MS
(r)1677 4345 MS (a)1744 4345 MS (t)1819 4345 MS (i)1869 4345 MS (o)1911 4345 MS (n)1986 4345 MS (s)2069 4345 MS
[83 0 0 -83 0 0]/Times-Roman MF
(o)490 4481 MS ( )532 4481 MS
(Dynamic installation of extension facilities as described in the introduction involves software written by one party)640 4481 MS
(\(the provider of the implementation\) to be executed under the authority of another \(the party operating the host)640 4579 MS
(software\). This opens the host party to a variety of "Trojan horse" attacks by the provider, or a malicious third party)640 4677 MS
(that forges implementations under a provider's name. See, for example )640 4775 MS
0.105 g
(RFC2046)3003 4775 MS
0 g
([)3327 4775 MS
(6)3355 4775 MS
(], section 4.5.2 for a discussion of)3397 4775 MS
(these risks.)640 4873 MS
[150 0 0 -150 0 0]/Times-Bold MF
(1)340 5136 MS (1)415 5136 MS (.)490 5136 MS ( )528 5136 MS
(R)588 5136 MS (e)696 5136 MS (f)763 5136 MS (e)813 5136 MS (r)880 5136 MS (e)944 5136 MS (n)1011 5136 MS (c)1094 5136 MS (e)1161 5136 MS (s)1228 5136 MS
[83 0 0 -83 0 0]/Times-Roman MF
([)340 5272 MS (1)368 5272 MS (])410 5272 MS ( )438 5272 MS
(D. H. Crocker. )640 5272 MS
[83 0 0 -83 0 0]/Times-Italic MF
("Standard for the Format of ARPA Internet Text Messages")1154 5272 MS
[83 0 0 -83 0 0]/Times-Roman MF
(, STD 11, )3149 5272 MS
0.105 g
(RFC 822)3496 5272 MS
0 g
(, UDEL, August 1982)3799 5272 MS
([)340 5370 MS (2)368 5370 MS (])410 5370 MS ( )438 5370 MS
(T. Berners-Lee, )640 5370 MS
[83 0 0 -83 0 0]/Times-Italic MF
("Universal Resource Identifiers in WWW. A Unifying Syntax for the Expression of Names and)1186 5370 MS
(Addresses of Objects on the Network as used in the World-Wide Web")640 5468 MS
[83 0 0 -83 0 0]/Times-Roman MF
(, )2976 5468 MS
0.105 g
(RFC 1630)3018 5468 MS
0 g
(, CERN, June 1994.)3363 5468 MS
([)340 5566 MS (3)368 5566 MS (])410 5566 MS ( )438 5566 MS
(T. Berners-Lee, L. Masinter, M. McCahill. )640 5566 MS
[83 0 0 -83 0 0]/Times-Italic MF
("Uniform Resource Locators \(URL\)")2086 5566 MS
[83 0 0 -83 0 0]/Times-Roman MF
( )3320 5566 MS
0.105 g
(RFC 1738)3341 5566 MS
0 g
(, CERN, Xerox PARC,)3686 5566 MS
(University of Minnesota, December 1994.)640 5664 MS
showpage
%%Page: 8 8
13.238 780.059 translate 72 600 div dup neg scale
0 0 transform .25 add round .25 sub exch .25 add round .25 sub exch itransform translate
[83 0 0 -83 0 0]/Times-Roman MF
(INTERNET-DRAFT)340 629 MS
(Mandatory)2258 629 MS
(Friday, August 07, 1998)3730 629 MS
(Frystyk, et al)340 5831 MS
([Page )4259 5831 MS
(8)4470 5831 MS
(])4512 5831 MS
([)340 777 MS (4)368 777 MS (])410 777 MS ( )438 777 MS
(R. Fielding, )640 777 MS
[83 0 0 -83 0 0]/Times-Italic MF
("Relative Uniform Resource Locators")1055 777 MS
[83 0 0 -83 0 0]/Times-Roman MF
(, )2351 777 MS
0.105 g
(RFC 1808)2393 777 MS
0 g
(, UC Irvine, June 1995.)2738 777 MS
([)340 875 MS (5)368 875 MS (])410 875 MS ( )438 875 MS
(T. Berners-Lee, R. Fielding, H. Frystyk, )640 875 MS
[83 0 0 -83 0 0]/Times-Italic MF
("Hypertext Transfer Protocol -- HTTP/1.0")1995 875 MS
[83 0 0 -83 0 0]/Times-Roman MF
(, )3444 875 MS
0.105 g
(RFC 1945)3486 875 MS
0 g
(, W3C/MIT, UC)3831 875 MS
(Irvine, W3C/MIT, May 1996.)640 973 MS
([)340 1071 MS (6)368 1071 MS (])410 1071 MS ( )438 1071 MS
(N. Freed, N. Borenstein, )640 1071 MS
[83 0 0 -83 0 0]/Times-Italic MF
("Multipurpose Internet Mail Extensions \(MIME\) Part Two: Media Types")1478 1071 MS
[83 0 0 -83 0 0]/Times-Roman MF
(, )3946 1071 MS
0.105 g
(RFC 2046)3988 1071 MS
0 g
(,)4333 1071 MS
(Innosoft, First Virtual, November 1996.)640 1169 MS
([)340 1267 MS (7)368 1267 MS (])410 1267 MS ( )438 1267 MS
(R. Fielding, J. Gettys, J. C. Mogul, H. Frystyk, T. Berners-Lee, )640 1267 MS
[83 0 0 -83 0 0]/Times-Italic MF
("Hypertext Transfer Protocol -- HTTP/1.1")2762 1267 MS
[83 0 0 -83 0 0]/Times-Roman MF
(, )4211 1267 MS
0.105 g
(RFC)4253 1267 MS
(2068)640 1365 MS
0 g
(, U.C. Irvine, DEC W3C/MIT, DEC, W3C/MIT, W3C/MIT, January 1997)808 1365 MS
([)340 1463 MS (8)368 1463 MS (])410 1463 MS ( )438 1463 MS
(E. Levinson, ")640 1463 MS
[83 0 0 -83 0 0]/Times-Italic MF
(Content-ID and Message-ID Uniform Resource Locators)1117 1463 MS
[83 0 0 -83 0 0]/Times-Roman MF
(", RFC 2111, March 1997)3023 1463 MS
([)340 1561 MS (9)368 1561 MS (])410 1561 MS ( )438 1561 MS
(S. Bradner, )640 1561 MS
[83 0 0 -83 0 0]/Times-Italic MF
("Key words for use in RFCs to Indicate Requirement Levels")1039 1561 MS
[83 0 0 -83 0 0]/Times-Roman MF
(, )3071 1561 MS
0.105 g
(RFC 2119)3113 1561 MS
0 g
(, Harvard University, March)3458 1561 MS
(1997)640 1659 MS
([)340 1757 MS (1)368 1757 MS (0)410 1757 MS (])452 1757 MS ( )480 1757 MS
(Y. Y. Goland et al, )640 1757 MS
[83 0 0 -83 0 0]/Times-Italic MF
("Extensions for Distributed Authoring and Versioning")1293 1757 MS
[83 0 0 -83 0 0]/Times-Roman MF
(, Internet Draft, )3138 1757 MS
0.105 g
(draft-jensen-webdav-ext-)3676 1757 MS
(01)640 1855 MS
0 g
(, 26 March 1997. This is work in progress.)724 1855 MS
([)340 1953 MS (1)368 1953 MS (1)410 1953 MS (])452 1953 MS ( )480 1953 MS
(H. F. Nielsen, D. Connolly, R. Khare, )640 1953 MS
[83 0 0 -83 0 0]/Times-Italic MF
("PEP - an extension mechanism for HTTP")1918 1953 MS
[83 0 0 -83 0 0]/Times-Roman MF
(, draft-http-pep-05.txt, November)3371 1953 MS
(21, 1997)640 2051 MS
([)340 2149 MS (1)368 2149 MS (2)410 2149 MS (])452 2149 MS ( )480 2149 MS
(Charlie Kindel, ")640 2149 MS
[83 0 0 -83 0 0]/Times-Italic MF
(The uuid: URI scheme)1208 2149 MS
[83 0 0 -83 0 0]/Times-Roman MF
(", )1957 2149 MS
(draft-kindel-uuid-uri-00.txt, November, 24 1997. This is work in progress)2034 2149 MS
[150 0 0 -150 0 0]/Times-Bold MF
(1)340 2412 MS (2)415 2412 MS (.)490 2412 MS ( )528 2412 MS
(A)588 2412 MS (c)696 2412 MS (k)763 2412 MS (n)846 2412 MS (o)929 2412 MS (w)1004 2412 MS (l)1114 2412 MS (e)1156 2412 MS (d)1223 2412 MS (g)1306 2412 MS (e)1381 2412 MS (m)1448 2412 MS (e)1573 2412 MS (n)1640 2412 MS (t)1723 2412 MS (s)1773 2412 MS
[83 0 0 -83 0 0]/Times-Roman MF
(Rohit Khare deserves special recognition for his efforts in commenting in the design phase of the protocol. Also thanks to)340 2598 MS
(Josh Cohen, Ross Patterson, Jim Gettys and all the people who have been involved in PEP.)340 2696 MS
[150 0 0 -150 0 0]/Times-Bold MF
(1)340 3009 MS (3)415 3009 MS (.)490 3009 MS ( )528 3009 MS
(A)588 3009 MS (u)696 3009 MS (t)779 3009 MS (h)829 3009 MS (o)912 3009 MS (r)987 3009 MS (s)1054 3009 MS ( )1112 3009 MS (A)1142 3009 MS (d)1250 3009 MS (d)1333 3009 MS (r)1416 3009 MS (e)1480 3009 MS (s)1547 3009 MS (s)1605 3009 MS (e)1663 3009 MS
(s)1730 3009 MS
[83 0 0 -83 0 0]/Times-Roman MF
0.105 g
(Henrik Frystyk Nielsen)340 3195 MS
0 g
(Technical Staff, World Wide Web Consortium)340 3293 MS
(MIT Laboratory for Computer Science)340 3391 MS
(545 Technology Square)340 3489 MS
(Cambridge, MA 02139, USA)340 3587 MS
(Email: )340 3685 MS
0.105 g
(frystyk@w3.org)581 3685 MS
(Paul J. Leach)340 3883 MS
0 g
(Microsoft Corporation)340 3981 MS
(1 Microsoft Way)340 4079 MS
(Redmond, WA 98052, USA)340 4177 MS
(Email: )340 4275 MS
0.105 g
(paulle@microsoft.com)581 4275 MS
(Scott Lawrence)340 4473 MS
0 g
(Agranat Systems, Inc.)340 4571 MS
(1345 Main Street)340 4669 MS
(Waltham, MA 02154, USA)340 4767 MS
(Email: )340 4865 MS
0.105 g
(lawrence@agranat.com)581 4865 MS
showpage
%%Page: 9 9
13.238 780.059 translate 72 600 div dup neg scale
0 0 transform .25 add round .25 sub exch .25 add round .25 sub exch itransform translate
[83 0 0 -83 0 0]/Times-Roman MF
(INTERNET-DRAFT)340 629 MS
(Mandatory)2258 629 MS
(Friday, August 07, 1998)3730 629 MS
(Frystyk, et al)340 5831 MS
([Page )4259 5831 MS
(9)4470 5831 MS
(])4512 5831 MS
[150 0 0 -150 0 0]/Times-Bold MF
(A)340 842 MS (p)448 842 MS (p)531 842 MS (e)614 842 MS (n)681 842 MS (d)764 842 MS (i)847 842 MS (c)889 842 MS (e)956 842 MS (s)1023 842 MS
(1)340 1143 MS (4)415 1143 MS (.)490 1143 MS ( )528 1143 MS
(S)588 1143 MS (u)671 1143 MS (m)754 1143 MS (m)879 1143 MS (a)1004 1143 MS (r)1079 1143 MS (y)1146 1143 MS ( )1222 1143 MS (o)1260 1143 MS (f)1335 1143 MS ( )1385 1143 MS (P)1423 1143 MS (r)1515 1143 MS (o)1579 1143 MS (t)1654 1143 MS (o)1704 1143 MS
(c)1779 1143 MS (o)1846 1143 MS (l)1921 1143 MS ( )1963 1143 MS (I)2001 1143 MS (n)2059 1143 MS (t)2142 1143 MS (e)2192 1143 MS (r)2259 1143 MS (a)2326 1143 MS (c)2401 1143 MS (t)2468 1143 MS (i)2518 1143 MS (o)2560 1143 MS (n)2635 1143 MS (s)2718 1143 MS
[83 0 0 -83 0 0]/Times-Roman MF
(The following tables summarize the outcome of strength and scope rules of the mandatory proposal of compliant and non-)340 1329 MS
(compliant HTTP proxies and origin servers. The summary is intended as a guide and index to the text, but is necessarily)340 1427 MS
(cryptic and incomplete. This summary should never be used or referenced separately from the complete specification.)340 1525 MS
[83 0 0 -83 0 0]/Times-Bold MF
(Table )2036 1774 MS
(1)2260 1774 MS
(: Origin Server)2302 1774 MS
%%IncludeFont: Helvetica-Narrow-Bold
[83 0 0 -83 0 0]/Helvetica-Narrow-Bold MF
(Scope)705 1926 MS
(Hop-by-hop)1801 1926 MS
(End-to-end)3352 1926 MS
n
5 5 390 1792 B
f
n
5 5 390 1792 B
f
n
824 5 396 1792 B
f
n
5 5 1221 1792 B
f
n
1533 5 1227 1792 B
f
n
5 5 2761 1792 B
f
n
1533 5 2767 1792 B
f
n
5 5 4301 1792 B
f
n
5 5 4301 1792 B
f
n
5 146 390 1798 B
f
n
5 146 1221 1798 B
f
n
5 146 2761 1798 B
f
n
5 146 4301 1798 B
f
(Strength)667 2079 MS
(Optional \(may\))1368 2079 MS
(Required \(must\))2116 2079 MS
(Optional \(may\))2908 2079 MS
(Required \(must\))3656 2079 MS
n
5 5 390 1945 B
f
n
824 5 396 1945 B
f
n
5 5 1221 1945 B
f
n
763 5 1227 1945 B
f
n
5 5 1991 1945 B
f
n
763 5 1997 1945 B
f
n
5 5 2761 1945 B
f
n
763 5 2767 1945 B
f
n
5 5 3531 1945 B
f
n
763 5 3537 1945 B
f
n
5 5 4301 1945 B
f
n
5 146 390 1951 B
f
n
5 146 1221 1951 B
f
n
5 146 1991 1951 B
f
n
5 146 2761 1951 B
f
n
5 146 3531 1951 B
f
n
5 146 4301 1951 B
f
(Mandatory unsupported)405 2232 MS
%%IncludeFont: Helvetica-Narrow
[83 0 0 -83 0 0]/Helvetica-Narrow MF
(Standard processing)1236 2233 MS
(501 \(Not Implemented\))2006 2233 MS
(Standard processing)2776 2233 MS
(501 \(Not Implemented\))3546 2233 MS
n
5 5 390 2098 B
f
n
824 5 396 2098 B
f
n
5 5 1221 2098 B
f
n
763 5 1227 2098 B
f
n
5 5 1991 2098 B
f
n
763 5 1997 2098 B
f
n
5 5 2761 2098 B
f
n
763 5 2767 2098 B
f
n
5 5 3531 2098 B
f
n
763 5 3537 2098 B
f
n
5 5 4301 2098 B
f
n
5 147 390 2104 B
f
n
5 147 1221 2104 B
f
n
5 147 1991 2104 B
f
n
5 147 2761 2104 B
f
n
5 147 3531 2104 B
f
n
5 147 4301 2104 B
f
[83 0 0 -83 0 0]/Helvetica-Narrow-Bold MF
(Extension unsupported)405 2386 MS
[83 0 0 -83 0 0]/Helvetica-Narrow MF
(Standard processing)1236 2387 MS
(510 \()2006 2387 MS
(Not Extended)2162 2387 MS
(\))2575 2387 MS
(Standard processing)2776 2387 MS
(510 \()3546 2387 MS
(Not Extended)3702 2387 MS
(\))4115 2387 MS
n
5 5 390 2252 B
f
n
824 5 396 2252 B
f
n
5 5 1221 2252 B
f
n
763 5 1227 2252 B
f
n
5 5 1991 2252 B
f
n
763 5 1997 2252 B
f
n
5 5 2761 2252 B
f
n
763 5 2767 2252 B
f
n
5 5 3531 2252 B
f
n
763 5 3537 2252 B
f
n
5 5 4301 2252 B
f
n
5 147 390 2258 B
f
n
5 147 1221 2258 B
f
n
5 147 1991 2258 B
f
n
5 147 2761 2258 B
f
n
5 147 3531 2258 B
f
n
5 147 4301 2258 B
f
[83 0 0 -83 0 0]/Helvetica-Narrow-Bold MF
(Extension supported)405 2540 MS
[83 0 0 -83 0 0]/Helvetica-Narrow MF
(Extended processing)1236 2541 MS
(Extended processing)2006 2541 MS
(Extended processing)2776 2541 MS
(Extended processing)3546 2541 MS
n
5 5 390 2406 B
f
n
824 5 396 2406 B
f
n
5 5 1221 2406 B
f
n
763 5 1227 2406 B
f
n
5 5 1991 2406 B
f
n
763 5 1997 2406 B
f
n
5 5 2761 2406 B
f
n
763 5 2767 2406 B
f
n
5 5 3531 2406 B
f
n
763 5 3537 2406 B
f
n
5 5 4301 2406 B
f
n
5 147 390 2412 B
f
n
5 5 390 2560 B
f
n
5 5 390 2560 B
f
n
824 5 396 2560 B
f
n
5 147 1221 2412 B
f
n
5 5 1221 2560 B
f
n
763 5 1227 2560 B
f
n
5 147 1991 2412 B
f
n
5 5 1991 2560 B
f
n
763 5 1997 2560 B
f
n
5 147 2761 2412 B
f
n
5 5 2761 2560 B
f
n
763 5 2767 2560 B
f
n
5 147 3531 2412 B
f
n
5 5 3531 2560 B
f
n
763 5 3537 2560 B
f
n
5 147 4301 2412 B
f
n
5 5 4301 2560 B
f
n
5 5 4301 2560 B
f
[83 0 0 -83 0 0]/Times-Bold MF
(Table )2047 2745 MS
(2)2271 2745 MS
(: Proxy Server)2313 2745 MS
[83 0 0 -83 0 0]/Helvetica-Narrow-Bold MF
(Scope)704 2897 MS
(Hop-by-hop)1801 2897 MS
(End-to-end)3354 2897 MS
n
5 5 387 2763 B
f
n
5 5 387 2763 B
f
n
826 5 393 2763 B
f
n
5 5 1220 2763 B
f
n
1535 5 1226 2763 B
f
n
5 5 2762 2763 B
f
n
1534 5 2768 2763 B
f
n
5 5 4303 2763 B
f
n
5 5 4303 2763 B
f
n
5 146 387 2769 B
f
n
5 146 1220 2769 B
f
n
5 146 2762 2769 B
f
n
5 146 4303 2769 B
f
(Strength)666 3050 MS
(Optional \(may\))1368 3050 MS
(Required \(must\))2116 3050 MS
(Optional \(may\))2910 3050 MS
(Required \(must\))3658 3050 MS
n
5 5 387 2916 B
f
n
826 5 393 2916 B
f
n
5 5 1220 2916 B
f
n
764 5 1226 2916 B
f
n
5 5 1991 2916 B
f
n
764 5 1997 2916 B
f
n
5 5 2762 2916 B
f
n
763 5 2768 2916 B
f
n
5 5 3532 2916 B
f
n
764 5 3538 2916 B
f
n
5 5 4303 2916 B
f
n
5 146 387 2922 B
f
n
5 146 1220 2922 B
f
n
5 146 1991 2922 B
f
n
5 146 2762 2922 B
f
n
5 146 3532 2922 B
f
n
5 146 4303 2922 B
f
(Mandatory unsupported)403 3203 MS
[83 0 0 -83 0 0]/Helvetica-Narrow MF
(Strip extension)1236 3204 MS
(501 \(Not Implemented\))2006 3204 MS
(or tunnel)2006 3302 MS
(Forward extension)2777 3204 MS
(501 \(Not Implemented\))3548 3204 MS
(or tunnel)3548 3302 MS
n
5 5 387 3069 B
f
n
826 5 393 3069 B
f
n
5 5 1220 3069 B
f
n
764 5 1226 3069 B
f
n
5 5 1991 3069 B
f
n
764 5 1997 3069 B
f
n
5 5 2762 3069 B
f
n
763 5 2768 3069 B
f
n
5 5 3532 3069 B
f
n
764 5 3538 3069 B
f
n
5 5 4303 3069 B
f
n
5 245 387 3075 B
f
n
5 245 1220 3075 B
f
n
5 245 1991 3075 B
f
n
5 245 2762 3075 B
f
n
5 245 3532 3075 B
f
n
5 245 4303 3075 B
f
[83 0 0 -83 0 0]/Helvetica-Narrow-Bold MF
(Extension unsupported)403 3455 MS
[83 0 0 -83 0 0]/Helvetica-Narrow MF
(Strip extension)1236 3456 MS
(510 \()2006 3456 MS
(Not Extended)2162 3456 MS
(\))2575 3456 MS
(Forward extension)2777 3456 MS
(Forward extension)3548 3456 MS
n
5 5 387 3321 B
f
n
826 5 393 3321 B
f
n
5 5 1220 3321 B
f
n
764 5 1226 3321 B
f
n
5 5 1991 3321 B
f
n
764 5 1997 3321 B
f
n
5 5 2762 3321 B
f
n
763 5 2768 3321 B
f
n
5 5 3532 3321 B
f
n
764 5 3538 3321 B
f
n
5 5 4303 3321 B
f
n
5 147 387 3327 B
f
n
5 147 1220 3327 B
f
n
5 147 1991 3327 B
f
n
5 147 2762 3327 B
f
n
5 147 3532 3327 B
f
n
5 147 4303 3327 B
f
[83 0 0 -83 0 0]/Helvetica-Narrow-Bold MF
(Extension supported)403 3609 MS
[83 0 0 -83 0 0]/Helvetica-Narrow MF
(Extended processing)1236 3610 MS
(and strip)1236 3708 MS
(Extended processing)2006 3610 MS
(and strip)2006 3708 MS
(Extended processing,)2777 3610 MS
(may strip)2777 3708 MS
(Extended processing,)3548 3610 MS
(may strip)3548 3708 MS
n
5 5 387 3475 B
f
n
826 5 393 3475 B
f
n
5 5 1220 3475 B
f
n
764 5 1226 3475 B
f
n
5 5 1991 3475 B
f
n
764 5 1997 3475 B
f
n
5 5 2762 3475 B
f
n
763 5 2768 3475 B
f
n
5 5 3532 3475 B
f
n
764 5 3538 3475 B
f
n
5 5 4303 3475 B
f
n
5 245 387 3481 B
f
n
5 5 387 3727 B
f
n
5 5 387 3727 B
f
n
826 5 393 3727 B
f
n
5 245 1220 3481 B
f
n
5 5 1220 3727 B
f
n
764 5 1226 3727 B
f
n
5 245 1991 3481 B
f
n
5 5 1991 3727 B
f
n
764 5 1997 3727 B
f
n
5 245 2762 3481 B
f
n
5 5 2762 3727 B
f
n
763 5 2768 3727 B
f
n
5 245 3532 3481 B
f
n
5 5 3532 3727 B
f
n
764 5 3538 3727 B
f
n
5 245 4303 3481 B
f
n
5 5 4303 3727 B
f
n
5 5 4303 3727 B
f
[150 0 0 -150 0 0]/Times-Bold MF
(1)340 3976 MS (5)415 3976 MS (.)490 3976 MS ( )528 3976 MS
(E)588 3976 MS (x)688 3976 MS (a)763 3976 MS (m)838 3976 MS (p)963 3976 MS (l)1046 3976 MS (e)1088 3976 MS (s)1155 3976 MS
[83 0 0 -83 0 0]/Times-Roman MF
(The following examples show various scenarios using mandatory in HTTP/1.1 requests and responses. Information not)340 4162 MS
/IsChar{exch/CharStrings get exch known}bd/MapCh{3 -1 roll/Encoding get 3 1
roll put}bd/MapDegree{dup 16#b0 exch/degree IsChar{/degree}{/ring}ifelse MapCh}
bd/MapBB{dup 16#a6 exch/brokenbar IsChar{/brokenbar}{/bar}ifelse MapCh}bd
/reencode{findfont begin currentdict dup length dict begin{1 index/FID ne{def}
{pop pop}ifelse}forall/FontName exch def dup length 0 ne{/Encoding Encoding 256
array copy def 0 exch{dup type/nametype eq{Encoding 2 index 2 index put pop 1
add}{exch pop}ifelse}forall}if pop currentdict dup end end/FontName get exch
definefont dup MapDegree MapBB}bd/LATENC[0/grave/acute/circumflex/tilde/macron
/breve/dotaccent/dieresis/ring/cedilla/hungarumlaut/ogonek/caron/dotlessi/fi/fl
/Lslash/lslash/Zcaron/zcaron/minus/.notdef/.notdef/.notdef/.notdef/.notdef
/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/space/exclam/quotedbl
/numbersign/dollar/percent/ampersand/quotesingle/parenleft/parenright/asterisk
/plus/comma/hyphen/period/slash/zero/one/two/three/four/five/six/seven/eight
/nine/colon/semicolon/less/equal/greater/question/at/A/B/C/D/E/F/G/H/I/J/K/L/M
/N/O/P/Q/R/S/T/U/V/W/X/Y/Z/bracketleft/backslash/bracketright/asciicircum
/underscore/grave/a/b/c/d/e/f/g/h/i/j/k/l/m/n/o/p/q/r/s/t/u/v/w/x/y/z/braceleft
/bar/braceright/asciitilde/.notdef/.notdef/.notdef/quotesinglbase/florin
/quotedblbase/ellipsis/dagger/daggerdbl/circumflex/perthousand/Scaron
/guilsinglleft/OE/.notdef/.notdef/.notdef/.notdef/quoteleft/quoteright
/quotedblleft/quotedblright/bullet/endash/emdash/tilde/trademark/scaron
/guilsinglright/oe/.notdef/.notdef/Ydieresis/.notdef/exclamdown/cent/sterling
/currency/yen/brokenbar/section/dieresis/copyright/ordfeminine/guillemotleft
/logicalnot/hyphen/registered/macron/degree/plusminus/twosuperior/threesuperior
/acute/mu/paragraph/periodcentered/cedilla/onesuperior/ordmasculine
/guillemotright/onequarter/onehalf/threequarters/questiondown/Agrave/Aacute
/Acircumflex/Atilde/Adieresis/Aring/AE/Ccedilla/Egrave/Eacute/Ecircumflex
/Edieresis/Igrave/Iacute/Icircumflex/Idieresis/Eth/Ntilde/Ograve/Oacute
/Ocircumflex/Otilde/Odieresis/multiply/Oslash/Ugrave/Uacute/Ucircumflex
/Udieresis/Yacute/Thorn/germandbls/agrave/aacute/acircumflex/atilde/adieresis
/aring/ae/ccedilla/egrave/eacute/ecircumflex/edieresis/igrave/iacute
/icircumflex/idieresis/eth/ntilde/ograve/oacute/ocircumflex/otilde/odieresis
/divide/oslash/ugrave/uacute/ucircumflex/udieresis/yacute/thorn/ydieresis]def
LATENC /_Times-Roman /Times-Roman reencode
[83 0 0 -83 0 0]/_Times-Roman MF
(essential for illustrating the examples is left out \(referred to as "\205"\))340 4260 MS
[133 0 0 -133 0 0]/Times-Bold MF
(1)340 4558 MS (5)407 4558 MS (.)474 4558 MS
(1)507 4558 MS ( )574 4558 MS
(Client Requests Server to use an Extension)634 4558 MS
[83 0 0 -83 0 0]/_Times-Roman MF
(In this example, the client requires that the server supports and uses the extension identified by the URI ")340 4740 MS
(http://www.distributed.org/some.extension". By making the request mandatory \(see section )340 4838 MS
(5)3385 4838 MS
(\), the client forces the server to)3427 4838 MS
(process the extension declaration and obey the extension or report an error.)340 4936 MS
[83 0 0 -83 0 0]/Courier MF
(    M-GET /some.url HTTP/1.1)340 5071 MS
(    Host: some.host)340 5159 MS
(    Man: "http://www.distributed.org/some.extension")340 5247 MS
(    ...)340 5335 MS
(    HTTP/1.1 102 Extended)340 5511 MS
showpage
%%Page: 10 10
13.238 780.059 translate 72 600 div dup neg scale
0 0 transform .25 add round .25 sub exch .25 add round .25 sub exch itransform translate
[83 0 0 -83 0 0]/Times-Roman MF
(INTERNET-DRAFT)340 629 MS
(Mandatory)2258 629 MS
(Friday, August 07, 1998)3730 629 MS
(Frystyk, et al)340 5831 MS
([Page )4217 5831 MS
(10)4428 5831 MS
(])4512 5831 MS
[83 0 0 -83 0 0]/Courier MF
(    HTTP/1.1 200 OK)340 764 MS
(    ...)340 852 MS
[83 0 0 -83 0 0]/Times-Roman MF
(The response shows that the server does understand the requested extension.)340 1003 MS
[133 0 0 -133 0 0]/Times-Bold MF
(1)340 1301 MS (5)407 1301 MS (.)474 1301 MS
(2)507 1301 MS ( )574 1301 MS
(Server proposes the use of an Extension)634 1301 MS
[83 0 0 -83 0 0]/Times-Roman MF
(By including an optional extension declaration in the response, the server indicates that the response has been extended but)340 1483 MS
(that it is OK if the client ignores the extension:)340 1581 MS
[83 0 0 -83 0 0]/Courier MF
(    GET /Index HTTP/1.1)340 1716 MS
(    Host: some.host)340 1804 MS
(    HTTP/1.1 200 OK)340 1980 MS
(    Opt: "http://www.cache.com/cache-index", ns=23-)340 2068 MS
(    23-index: "http://some.host/index")340 2156 MS
(    ...)340 2244 MS
[83 0 0 -83 0 0]/Times-Roman MF
(The server has no direct mechanism of knowing whether the client accepted and used the optional extension declaration.)340 2395 MS
showpage
PageSV restore
%%Trailer
%%DocumentNeededFonts:
%%+ Courier
%%+ Helvetica-Narrow
%%+ Helvetica-Narrow-Bold
%%+ Times-Bold
%%+ Times-Italic
%%+ Times-Roman
%%DocumentSuppliedFonts:
end
%%Pages: 10
%%EOF
%-12345X@PJL EOJ
%-12345X