Ignore:
Timestamp:
Feb 9, 2008, 2:03:01 PM (12 years ago)
Author:
julian.reschke@…
Message:

Work on referencing ABNF rules adopted from other parts (done for P2 and P3); relates to #36.

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1 edited

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  • draft-ietf-httpbis/latest/p2-semantics.html

    r205 r206  
    633633  quoted-string = &lt;quoted-string, defined in <a href="#Part1" id="rfc.xref.Part1.6"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#basic.rules" title="Basic Rules">Section 2.2</a>&gt;
    634634  token         = &lt;token, defined in <a href="#Part1" id="rfc.xref.Part1.7"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#basic.rules" title="Basic Rules">Section 2.2</a>&gt;
     635</pre><p id="rfc.section.2.p.4">The ABNF rules below are defined in other parts:</p>
     636      <div id="rfc.figure.u.3"></div><pre class="inline">  absoluteURI   = &lt;absoluteURI, defined in <a href="#Part1" id="rfc.xref.Part1.8"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#general.syntax" title="General Syntax">Section 3.2.1</a>&gt;
     637  Accept        = &lt;Accept, defined in <a href="#Part3" id="rfc.xref.Part3.1"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>, <a href="p3-payload.html#header.accept" title="Accept">Section 6.1</a>&gt;
     638  Accept-Charset =
     639             &lt;Accept-Charset, defined in <a href="#Part3" id="rfc.xref.Part3.2"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>, <a href="p3-payload.html#header.accept-charset" title="Accept-Charset">Section 6.2</a>&gt;
     640  Accept-Encoding =
     641             &lt;Accept-Encoding, defined in <a href="#Part3" id="rfc.xref.Part3.3"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>, <a href="p3-payload.html#header.accept-encoding" title="Accept-Encoding">Section 6.3</a>&gt;
     642  Accept-Language =
     643             &lt;Accept-Language, defined in <a href="#Part3" id="rfc.xref.Part3.4"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>, <a href="p3-payload.html#header.accept-language" title="Accept-Language">Section 6.4</a>&gt;
     644  Accept-Ranges = &lt;Accept-Ranges, defined in <a href="#Part5" id="rfc.xref.Part5.1"><cite title="HTTP/1.1, part 5: Range Requests and Partial Responses">[Part5]</cite></a>, <a href="p5-range.html#header.accept-ranges" title="Accept-Ranges">Section 6.1</a>&gt;
     645  Age           = &lt;Age, defined in <a href="#Part6" id="rfc.xref.Part6.1"><cite title="HTTP/1.1, part 6: Caching">[Part6]</cite></a>, <a href="p6-cache.html#header.age" title="Age">Section 16.1</a>&gt;
     646  Authorization = &lt;Authorization, defined in <a href="#Part7" id="rfc.xref.Part7.1"><cite title="HTTP/1.1, part 7: Authentication">[Part7]</cite></a>, <a href="p7-auth.html#header.authorization" title="Authorization">Section 4.1</a>&gt;
     647  delta-seconds = &lt;delta-seconds, defined in <a href="#Part6" id="rfc.xref.Part6.2"><cite title="HTTP/1.1, part 6: Caching">[Part6]</cite></a>, <a href="p6-cache.html#header.age" title="Age">Section 16.1</a>&gt;
     648  ETag          = &lt;ETag, defined in <a href="#Part4" id="rfc.xref.Part4.1"><cite title="HTTP/1.1, part 4: Conditional Requests">[Part4]</cite></a>, <a href="p4-conditional.html#header.etag" title="ETag">Section 7.1</a>&gt;
     649  fragment      = &lt;fragment, defined in <a href="#Part1" id="rfc.xref.Part1.9"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#general.syntax" title="General Syntax">Section 3.2.1</a>&gt;
     650  HTTP-date     = &lt;HTTP-date, defined in <a href="#Part1" id="rfc.xref.Part1.10"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#full.date" title="Full Date">Section 3.3.1</a>&gt;
     651  Host          = &lt;Host, defined in <a href="#Part1" id="rfc.xref.Part1.11"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#header.host" title="Host">Section 8.4</a>&gt;
     652  If-Match      = &lt;If-Match, defined in <a href="#Part4" id="rfc.xref.Part4.2"><cite title="HTTP/1.1, part 4: Conditional Requests">[Part4]</cite></a>, <a href="p4-conditional.html#header.if-match" title="If-Match">Section 7.2</a>&gt;
     653  If-Modified-Since =
     654             &lt;If-Modified-Since, defined in <a href="#Part4" id="rfc.xref.Part4.3"><cite title="HTTP/1.1, part 4: Conditional Requests">[Part4]</cite></a>, <a href="p4-conditional.html#header.if-modified-since" title="If-Modified-Since">Section 7.3</a>&gt;
     655  If-None-Match = &lt;If-None-Match, defined in <a href="#Part4" id="rfc.xref.Part4.4"><cite title="HTTP/1.1, part 4: Conditional Requests">[Part4]</cite></a>, <a href="p4-conditional.html#header.if-none-match" title="If-None-Match">Section 7.4</a>&gt;
     656  If-Range      = &lt;If-Range, defined in <a href="#Part5" id="rfc.xref.Part5.2"><cite title="HTTP/1.1, part 5: Range Requests and Partial Responses">[Part5]</cite></a>, <a href="p5-range.html#header.if-range" title="If-Range">Section 6.3</a>&gt;
     657  If-Unmodified-Since =
     658             &lt;If-Unmodified-Since, defined in <a href="#Part4" id="rfc.xref.Part4.5"><cite title="HTTP/1.1, part 4: Conditional Requests">[Part4]</cite></a>, <a href="p4-conditional.html#header.if-unmodified-since" title="If-Unmodified-Since">Section 7.5</a>&gt;
     659  product       = &lt;product, defined in <a href="#Part1" id="rfc.xref.Part1.12"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#product.tokens" title="Product Tokens">Section 3.5</a>&gt;
     660  Proxy-Authenticate =
     661             &lt;Proxy-Authenticate, defined in <a href="#Part7" id="rfc.xref.Part7.2"><cite title="HTTP/1.1, part 7: Authentication">[Part7]</cite></a>, <a href="p7-auth.html#header.proxy-authenticate" title="Proxy-Authenticate">Section 4.2</a>&gt;
     662  Proxy-Authorization =
     663             &lt;Proxy-Authorization, defined in <a href="#Part7" id="rfc.xref.Part7.3"><cite title="HTTP/1.1, part 7: Authentication">[Part7]</cite></a>, <a href="p7-auth.html#header.proxy-authorization" title="Proxy-Authorization">Section 4.3</a>&gt;
     664  Range         = &lt;Range, defined in <a href="#Part5" id="rfc.xref.Part5.3"><cite title="HTTP/1.1, part 5: Range Requests and Partial Responses">[Part5]</cite></a>, <a href="p5-range.html#header.range" title="Range">Section 6.4</a>&gt;
     665  relativeURI   = &lt;relativeURI, defined in <a href="#Part1" id="rfc.xref.Part1.13"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#general.syntax" title="General Syntax">Section 3.2.1</a>&gt;
     666  TE            = &lt;TE, defined in <a href="#Part1" id="rfc.xref.Part1.14"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#header.upgrade" title="Upgrade">Section 8.8</a>&gt;
     667  Vary          = &lt;Vary, defined in <a href="#Part6" id="rfc.xref.Part6.3"><cite title="HTTP/1.1, part 6: Caching">[Part6]</cite></a>, <a href="p6-cache.html#header.vary" title="Vary">Section 16.5</a>&gt;
     668  WWW-Authenticate =
     669             &lt;WWW-Authenticate, defined in <a href="#Part7" id="rfc.xref.Part7.4"><cite title="HTTP/1.1, part 7: Authentication">[Part7]</cite></a>, <a href="p7-auth.html#header.www-authenticate" title="WWW-Authenticate">Section 4.4</a>&gt;
    635670</pre><h1 id="rfc.section.3"><a href="#rfc.section.3">3.</a>&nbsp;<a id="method" href="#method">Method</a></h1>
    636671      <p id="rfc.section.3.p.1">The Method token indicates the method to be performed on the resource identified by the Request-URI. The method is case-sensitive.</p>
    637       <div id="rfc.figure.u.3"></div><pre class="inline"><span id="rfc.iref.g.1"></span><span id="rfc.iref.g.2"></span>  Method         = "OPTIONS"                ; <a href="#OPTIONS" id="rfc.xref.OPTIONS.1" title="OPTIONS">Section&nbsp;8.2</a>
     672      <div id="rfc.figure.u.4"></div><pre class="inline"><span id="rfc.iref.g.1"></span><span id="rfc.iref.g.2"></span>  Method         = "OPTIONS"                ; <a href="#OPTIONS" id="rfc.xref.OPTIONS.1" title="OPTIONS">Section&nbsp;8.2</a>
    638673                 | "GET"                    ; <a href="#GET" id="rfc.xref.GET.1" title="GET">Section&nbsp;8.3</a>
    639674                 | "HEAD"                   ; <a href="#HEAD" id="rfc.xref.HEAD.1" title="HEAD">Section&nbsp;8.4</a>
    … …  
    655690         method invocation.
    656691      </p>
    657       <div id="rfc.figure.u.4"></div><pre class="inline"><span id="rfc.iref.g.3"></span>  request-header = Accept                   ; <a href="#Part3" id="rfc.xref.Part3.1"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>, <a href="p3-payload.html#header.accept" title="Accept">Section 6.1</a>
    658                  | Accept-Charset           ; <a href="#Part3" id="rfc.xref.Part3.2"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>, <a href="p3-payload.html#header.accept-charset" title="Accept-Charset">Section 6.2</a>
    659                  | Accept-Encoding          ; <a href="#Part3" id="rfc.xref.Part3.3"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>, <a href="p3-payload.html#header.accept-encoding" title="Accept-Encoding">Section 6.3</a>
    660                  | Accept-Language          ; <a href="#Part3" id="rfc.xref.Part3.4"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>, <a href="p3-payload.html#header.accept-language" title="Accept-Language">Section 6.4</a>
    661                  | Authorization            ; <a href="#Part7" id="rfc.xref.Part7.1"><cite title="HTTP/1.1, part 7: Authentication">[Part7]</cite></a>, <a href="p7-auth.html#header.authorization" title="Authorization">Section 4.1</a>
     692      <div id="rfc.figure.u.5"></div><pre class="inline"><span id="rfc.iref.g.3"></span>  request-header = Accept                   ; <a href="#Part3" id="rfc.xref.Part3.5"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>, <a href="p3-payload.html#header.accept" title="Accept">Section 6.1</a>
     693                 | Accept-Charset           ; <a href="#Part3" id="rfc.xref.Part3.6"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>, <a href="p3-payload.html#header.accept-charset" title="Accept-Charset">Section 6.2</a>
     694                 | Accept-Encoding          ; <a href="#Part3" id="rfc.xref.Part3.7"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>, <a href="p3-payload.html#header.accept-encoding" title="Accept-Encoding">Section 6.3</a>
     695                 | Accept-Language          ; <a href="#Part3" id="rfc.xref.Part3.8"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>, <a href="p3-payload.html#header.accept-language" title="Accept-Language">Section 6.4</a>
     696                 | Authorization            ; <a href="#Part7" id="rfc.xref.Part7.5"><cite title="HTTP/1.1, part 7: Authentication">[Part7]</cite></a>, <a href="p7-auth.html#header.authorization" title="Authorization">Section 4.1</a>
    662697                 | Expect                   ; <a href="#header.expect" id="rfc.xref.header.expect.1" title="Expect">Section&nbsp;10.2</a>
    663698                 | From                     ; <a href="#header.from" id="rfc.xref.header.from.1" title="From">Section&nbsp;10.3</a>
    664                  | Host                     ; <a href="#Part1" id="rfc.xref.Part1.8"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#header.host" title="Host">Section 8.4</a>
    665                  | If-Match                 ; <a href="#Part4" id="rfc.xref.Part4.1"><cite title="HTTP/1.1, part 4: Conditional Requests">[Part4]</cite></a>, <a href="p4-conditional.html#header.if-match" title="If-Match">Section 7.2</a>
    666                  | If-Modified-Since        ; <a href="#Part4" id="rfc.xref.Part4.2"><cite title="HTTP/1.1, part 4: Conditional Requests">[Part4]</cite></a>, <a href="p4-conditional.html#header.if-modified-since" title="If-Modified-Since">Section 7.3</a>
    667                  | If-None-Match            ; <a href="#Part4" id="rfc.xref.Part4.3"><cite title="HTTP/1.1, part 4: Conditional Requests">[Part4]</cite></a>, <a href="p4-conditional.html#header.if-none-match" title="If-None-Match">Section 7.4</a>
    668                  | If-Range                 ; <a href="#Part5" id="rfc.xref.Part5.1"><cite title="HTTP/1.1, part 5: Range Requests and Partial Responses">[Part5]</cite></a>, <a href="p5-range.html#header.if-range" title="If-Range">Section 6.3</a>
    669                  | If-Unmodified-Since      ; <a href="#Part4" id="rfc.xref.Part4.4"><cite title="HTTP/1.1, part 4: Conditional Requests">[Part4]</cite></a>, <a href="p4-conditional.html#header.if-unmodified-since" title="If-Unmodified-Since">Section 7.5</a>
     699                 | Host                     ; <a href="#Part1" id="rfc.xref.Part1.15"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#header.host" title="Host">Section 8.4</a>
     700                 | If-Match                 ; <a href="#Part4" id="rfc.xref.Part4.6"><cite title="HTTP/1.1, part 4: Conditional Requests">[Part4]</cite></a>, <a href="p4-conditional.html#header.if-match" title="If-Match">Section 7.2</a>
     701                 | If-Modified-Since        ; <a href="#Part4" id="rfc.xref.Part4.7"><cite title="HTTP/1.1, part 4: Conditional Requests">[Part4]</cite></a>, <a href="p4-conditional.html#header.if-modified-since" title="If-Modified-Since">Section 7.3</a>
     702                 | If-None-Match            ; <a href="#Part4" id="rfc.xref.Part4.8"><cite title="HTTP/1.1, part 4: Conditional Requests">[Part4]</cite></a>, <a href="p4-conditional.html#header.if-none-match" title="If-None-Match">Section 7.4</a>
     703                 | If-Range                 ; <a href="#Part5" id="rfc.xref.Part5.4"><cite title="HTTP/1.1, part 5: Range Requests and Partial Responses">[Part5]</cite></a>, <a href="p5-range.html#header.if-range" title="If-Range">Section 6.3</a>
     704                 | If-Unmodified-Since      ; <a href="#Part4" id="rfc.xref.Part4.9"><cite title="HTTP/1.1, part 4: Conditional Requests">[Part4]</cite></a>, <a href="p4-conditional.html#header.if-unmodified-since" title="If-Unmodified-Since">Section 7.5</a>
    670705                 | Max-Forwards             ; <a href="#header.max-forwards" id="rfc.xref.header.max-forwards.1" title="Max-Forwards">Section&nbsp;10.5</a>
    671                  | Proxy-Authorization      ; <a href="#Part7" id="rfc.xref.Part7.2"><cite title="HTTP/1.1, part 7: Authentication">[Part7]</cite></a>, <a href="p7-auth.html#header.proxy-authorization" title="Proxy-Authorization">Section 4.3</a>
    672                  | Range                    ; <a href="#Part5" id="rfc.xref.Part5.2"><cite title="HTTP/1.1, part 5: Range Requests and Partial Responses">[Part5]</cite></a>, <a href="p5-range.html#header.range" title="Range">Section 6.4</a>
     706                 | Proxy-Authorization      ; <a href="#Part7" id="rfc.xref.Part7.6"><cite title="HTTP/1.1, part 7: Authentication">[Part7]</cite></a>, <a href="p7-auth.html#header.proxy-authorization" title="Proxy-Authorization">Section 4.3</a>
     707                 | Range                    ; <a href="#Part5" id="rfc.xref.Part5.5"><cite title="HTTP/1.1, part 5: Range Requests and Partial Responses">[Part5]</cite></a>, <a href="p5-range.html#header.range" title="Range">Section 6.4</a>
    673708                 | Referer                  ; <a href="#header.referer" id="rfc.xref.header.referer.1" title="Referer">Section&nbsp;10.6</a>
    674                  | TE                       ; <a href="#Part1" id="rfc.xref.Part1.9"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#header.upgrade" title="Upgrade">Section 8.8</a>
     709                 | TE                       ; <a href="#Part1" id="rfc.xref.Part1.16"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#header.upgrade" title="Upgrade">Section 8.8</a>
    675710                 | User-Agent               ; <a href="#header.user-agent" id="rfc.xref.header.user-agent.1" title="User-Agent">Section&nbsp;10.9</a>
    676711</pre><p id="rfc.section.4.p.3">Request-header field names can be extended reliably only in combination with a change in the protocol version. However, new
    … …  
    686721         are presented below. The reason phrases listed here are only recommendations -- they <em class="bcp14">MAY</em> be replaced by local equivalents without affecting the protocol.
    687722      </p>
    688       <div id="rfc.figure.u.5"></div><pre class="inline"><span id="rfc.iref.g.4"></span><span id="rfc.iref.g.5"></span><span id="rfc.iref.g.6"></span>  Status-Code    =
     723      <div id="rfc.figure.u.6"></div><pre class="inline"><span id="rfc.iref.g.4"></span><span id="rfc.iref.g.5"></span><span id="rfc.iref.g.6"></span>  Status-Code    =
    689724         "100"  ; <a href="#status.100" id="rfc.xref.status.100.1" title="100 Continue">Section&nbsp;9.1.1</a>: Continue
    690725       | "101"  ; <a href="#status.101" id="rfc.xref.status.101.1" title="101 Switching Protocols">Section&nbsp;9.1.2</a>: Switching Protocols
    … …  
    742777         the Request-URI.
    743778      </p>
    744       <div id="rfc.figure.u.6"></div><pre class="inline"><span id="rfc.iref.g.7"></span>  response-header = Accept-Ranges           ; <a href="#Part5" id="rfc.xref.Part5.3"><cite title="HTTP/1.1, part 5: Range Requests and Partial Responses">[Part5]</cite></a>, <a href="p5-range.html#header.accept-ranges" title="Accept-Ranges">Section 6.1</a>
    745                   | Age                     ; <a href="#Part6" id="rfc.xref.Part6.1"><cite title="HTTP/1.1, part 6: Caching">[Part6]</cite></a>, <a href="p6-cache.html#header.age" title="Age">Section 16.1</a>
    746                   | ETag                    ; <a href="#Part4" id="rfc.xref.Part4.5"><cite title="HTTP/1.1, part 4: Conditional Requests">[Part4]</cite></a>, <a href="p4-conditional.html#header.etag" title="ETag">Section 7.1</a>
     779      <div id="rfc.figure.u.7"></div><pre class="inline"><span id="rfc.iref.g.7"></span>  response-header = Accept-Ranges           ; <a href="#Part5" id="rfc.xref.Part5.6"><cite title="HTTP/1.1, part 5: Range Requests and Partial Responses">[Part5]</cite></a>, <a href="p5-range.html#header.accept-ranges" title="Accept-Ranges">Section 6.1</a>
     780                  | Age                     ; <a href="#Part6" id="rfc.xref.Part6.4"><cite title="HTTP/1.1, part 6: Caching">[Part6]</cite></a>, <a href="p6-cache.html#header.age" title="Age">Section 16.1</a>
     781                  | ETag                    ; <a href="#Part4" id="rfc.xref.Part4.10"><cite title="HTTP/1.1, part 4: Conditional Requests">[Part4]</cite></a>, <a href="p4-conditional.html#header.etag" title="ETag">Section 7.1</a>
    747782                  | Location                ; <a href="#header.location" id="rfc.xref.header.location.1" title="Location">Section&nbsp;10.4</a>
    748                   | Proxy-Authenticate      ; <a href="#Part7" id="rfc.xref.Part7.3"><cite title="HTTP/1.1, part 7: Authentication">[Part7]</cite></a>, <a href="p7-auth.html#header.proxy-authenticate" title="Proxy-Authenticate">Section 4.2</a>
     783                  | Proxy-Authenticate      ; <a href="#Part7" id="rfc.xref.Part7.7"><cite title="HTTP/1.1, part 7: Authentication">[Part7]</cite></a>, <a href="p7-auth.html#header.proxy-authenticate" title="Proxy-Authenticate">Section 4.2</a>
    749784                  | Retry-After             ; <a href="#header.retry-after" id="rfc.xref.header.retry-after.1" title="Retry-After">Section&nbsp;10.7</a>
    750785                  | Server                  ; <a href="#header.server" id="rfc.xref.header.server.1" title="Server">Section&nbsp;10.8</a>
    751                   | Vary                    ; <a href="#Part6" id="rfc.xref.Part6.2"><cite title="HTTP/1.1, part 6: Caching">[Part6]</cite></a>, <a href="p6-cache.html#header.vary" title="Vary">Section 16.5</a>
    752                   | WWW-Authenticate        ; <a href="#Part7" id="rfc.xref.Part7.4"><cite title="HTTP/1.1, part 7: Authentication">[Part7]</cite></a>, <a href="p7-auth.html#header.www-authenticate" title="WWW-Authenticate">Section 4.4</a>
     786                  | Vary                    ; <a href="#Part6" id="rfc.xref.Part6.5"><cite title="HTTP/1.1, part 6: Caching">[Part6]</cite></a>, <a href="p6-cache.html#header.vary" title="Vary">Section 16.5</a>
     787                  | WWW-Authenticate        ; <a href="#Part7" id="rfc.xref.Part7.8"><cite title="HTTP/1.1, part 7: Authentication">[Part7]</cite></a>, <a href="p7-auth.html#header.www-authenticate" title="WWW-Authenticate">Section 4.4</a>
    753788</pre><p id="rfc.section.6.p.3">Response-header field names can be extended reliably only in combination with a change in the protocol version. However, new
    754789         or experimental header fields <em class="bcp14">MAY</em> be given the semantics of response-header fields if all parties in the communication recognize them to be response-header
    … …  
    758793      <p id="rfc.section.7.p.1">Request and Response messages <em class="bcp14">MAY</em> transfer an entity if not otherwise restricted by the request method or response status code. An entity consists of entity-header
    759794         fields and an entity-body, although some responses will only include the entity-headers. HTTP entity-body and entity-header
    760          fields are defined in <a href="#Part3" id="rfc.xref.Part3.5"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>.
    761       </p>
    762       <p id="rfc.section.7.p.2">An entity-body is only present in a message when a message-body is present, as described in <a href="p1-messaging.html#message.body" title="Message Body">Section 4.3</a> of <a href="#Part1" id="rfc.xref.Part1.10"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>. The entity-body is obtained from the message-body by decoding any Transfer-Encoding that might have been applied to ensure
     795         fields are defined in <a href="#Part3" id="rfc.xref.Part3.9"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>.
     796      </p>
     797      <p id="rfc.section.7.p.2">An entity-body is only present in a message when a message-body is present, as described in <a href="p1-messaging.html#message.body" title="Message Body">Section 4.3</a> of <a href="#Part1" id="rfc.xref.Part1.17"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>. The entity-body is obtained from the message-body by decoding any Transfer-Encoding that might have been applied to ensure
    763798         safe and proper transfer of the message.
    764799      </p>
    … …  
    836871      </p>
    837872      <p id="rfc.section.8.3.p.3">The semantics of the GET method change to a "partial GET" if the request message includes a Range header field. A partial
    838          GET requests that only part of the entity be transferred, as described in <a href="p5-range.html#header.range" title="Range">Section 6.4</a> of <a href="#Part5" id="rfc.xref.Part5.4"><cite title="HTTP/1.1, part 5: Range Requests and Partial Responses">[Part5]</cite></a>. The partial GET method is intended to reduce unnecessary network usage by allowing partially-retrieved entities to be completed
     873         GET requests that only part of the entity be transferred, as described in <a href="p5-range.html#header.range" title="Range">Section 6.4</a> of <a href="#Part5" id="rfc.xref.Part5.7"><cite title="HTTP/1.1, part 5: Range Requests and Partial Responses">[Part5]</cite></a>. The partial GET method is intended to reduce unnecessary network usage by allowing partially-retrieved entities to be completed
    839874         without transferring data already held by the client.
    840875      </p>
    841       <p id="rfc.section.8.3.p.4">The response to a GET request is cacheable if and only if it meets the requirements for HTTP caching described in <a href="#Part6" id="rfc.xref.Part6.3"><cite title="HTTP/1.1, part 6: Caching">[Part6]</cite></a>.
     876      <p id="rfc.section.8.3.p.4">The response to a GET request is cacheable if and only if it meets the requirements for HTTP caching described in <a href="#Part6" id="rfc.xref.Part6.6"><cite title="HTTP/1.1, part 6: Caching">[Part6]</cite></a>.
    842877      </p>
    843878      <p id="rfc.section.8.3.p.5">See <a href="#encoding.sensitive.information.in.uris" title="Encoding Sensitive Information in URIs">Section&nbsp;12.2</a> for security considerations when used for forms.
    … …  
    924959      </p>
    925960      <p id="rfc.section.8.8.p.2">TRACE allows the client to see what is being received at the other end of the request chain and use that data for testing
    926          or diagnostic information. The value of the Via header field (<a href="p1-messaging.html#header.via" title="Via">Section 8.9</a> of <a href="#Part1" id="rfc.xref.Part1.11"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>) is of particular interest, since it acts as a trace of the request chain. Use of the Max-Forwards header field allows the
     961         or diagnostic information. The value of the Via header field (<a href="p1-messaging.html#header.via" title="Via">Section 8.9</a> of <a href="#Part1" id="rfc.xref.Part1.18"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>) is of particular interest, since it acts as a trace of the request chain. Use of the Max-Forwards header field allows the
    927962         client to limit the length of the request chain, which is useful for testing a chain of proxies forwarding messages in an
    928963         infinite loop.
    … …  
    957992      <p id="rfc.section.9.1.1.p.1">The client <em class="bcp14">SHOULD</em> continue with its request. This interim response is used to inform the client that the initial part of the request has been
    958993         received and has not yet been rejected by the server. The client <em class="bcp14">SHOULD</em> continue by sending the remainder of the request or, if the request has already been completed, ignore this response. The
    959          server <em class="bcp14">MUST</em> send a final response after the request has been completed. See <a href="p1-messaging.html#use.of.the.100.status" title="Use of the 100 (Continue) Status">Section 7.2.3</a> of <a href="#Part1" id="rfc.xref.Part1.12"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a> for detailed discussion of the use and handling of this status code.
     994         server <em class="bcp14">MUST</em> send a final response after the request has been completed. See <a href="p1-messaging.html#use.of.the.100.status" title="Use of the 100 (Continue) Status">Section 7.2.3</a> of <a href="#Part1" id="rfc.xref.Part1.19"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a> for detailed discussion of the use and handling of this status code.
    960995      </p>
    961996      <div id="rfc.iref.24"></div>
    962997      <div id="rfc.iref.s.2"></div>
    963998      <h3 id="rfc.section.9.1.2"><a href="#rfc.section.9.1.2">9.1.2</a>&nbsp;<a id="status.101" href="#status.101">101 Switching Protocols</a></h3>
    964       <p id="rfc.section.9.1.2.p.1">The server understands and is willing to comply with the client's request, via the Upgrade message header field (<a href="p5-range.html#header.range" title="Range">Section 6.4</a> of <a href="#Part5" id="rfc.xref.Part5.5"><cite title="HTTP/1.1, part 5: Range Requests and Partial Responses">[Part5]</cite></a>), for a change in the application protocol being used on this connection. The server will switch protocols to those defined
     999      <p id="rfc.section.9.1.2.p.1">The server understands and is willing to comply with the client's request, via the Upgrade message header field (<a href="p5-range.html#header.range" title="Range">Section 6.4</a> of <a href="#Part5" id="rfc.xref.Part5.8"><cite title="HTTP/1.1, part 5: Range Requests and Partial Responses">[Part5]</cite></a>), for a change in the application protocol being used on this connection. The server will switch protocols to those defined
    9651000         by the response's Upgrade header field immediately after the empty line which terminates the 101 response.
    9661001      </p>
    … …  
    9971032      </p>
    9981033      <p id="rfc.section.9.2.2.p.2">A 201 response <em class="bcp14">MAY</em> contain an ETag response header field indicating the current value of the entity tag for the requested variant just created,
    999          see <a href="p4-conditional.html#header.etag" title="ETag">Section 7.1</a> of <a href="#Part4" id="rfc.xref.Part4.6"><cite title="HTTP/1.1, part 4: Conditional Requests">[Part4]</cite></a>.
     1034         see <a href="p4-conditional.html#header.etag" title="ETag">Section 7.1</a> of <a href="#Part4" id="rfc.xref.Part4.11"><cite title="HTTP/1.1, part 4: Conditional Requests">[Part4]</cite></a>.
    10001035      </p>
    10011036      <div id="rfc.iref.27"></div>
    … …  
    10411076      <h3 id="rfc.section.9.2.7"><a href="#rfc.section.9.2.7">9.2.7</a>&nbsp;<a id="status.206" href="#status.206">206 Partial Content</a></h3>
    10421077      <p id="rfc.section.9.2.7.p.1">The server has fulfilled the partial GET request for the resource and the enclosed entity is a partial representation as defined
    1043          in <a href="#Part5" id="rfc.xref.Part5.6"><cite title="HTTP/1.1, part 5: Range Requests and Partial Responses">[Part5]</cite></a>.
     1078         in <a href="#Part5" id="rfc.xref.Part5.9"><cite title="HTTP/1.1, part 5: Range Requests and Partial Responses">[Part5]</cite></a>.
    10441079      </p>
    10451080      <h2 id="rfc.section.9.3"><a href="#rfc.section.9.3">9.3</a>&nbsp;<a id="status.3xx" href="#status.3xx">Redirection 3xx</a></h2>
    … …  
    10571092      <h3 id="rfc.section.9.3.1"><a href="#rfc.section.9.3.1">9.3.1</a>&nbsp;<a id="status.300" href="#status.300">300 Multiple Choices</a></h3>
    10581093      <p id="rfc.section.9.3.1.p.1">The requested resource corresponds to any one of a set of representations, each with its own specific location, and agent-driven
    1059          negotiation information (<a href="p3-payload.html#content.negotiation" title="Content Negotiation">Section 5</a> of <a href="#Part3" id="rfc.xref.Part3.6"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>) is being provided so that the user (or user agent) can select a preferred representation and redirect its request to that
     1094         negotiation information (<a href="p3-payload.html#content.negotiation" title="Content Negotiation">Section 5</a> of <a href="#Part3" id="rfc.xref.Part3.10"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>) is being provided so that the user (or user agent) can select a preferred representation and redirect its request to that
    10601095         location.
    10611096      </p>
    … …  
    11191154      <h3 id="rfc.section.9.3.5"><a href="#rfc.section.9.3.5">9.3.5</a>&nbsp;<a id="status.304" href="#status.304">304 Not Modified</a></h3>
    11201155      <p id="rfc.section.9.3.5.p.1">The response to the request has not been modified since the conditions indicated by the client's conditional GET request,
    1121          as defined in <a href="#Part4" id="rfc.xref.Part4.7"><cite title="HTTP/1.1, part 4: Conditional Requests">[Part4]</cite></a>.
     1156         as defined in <a href="#Part4" id="rfc.xref.Part4.12"><cite title="HTTP/1.1, part 4: Conditional Requests">[Part4]</cite></a>.
    11221157      </p>
    11231158      <div id="rfc.iref.37"></div>
    … …  
    11661201      <div id="rfc.iref.s.19"></div>
    11671202      <h3 id="rfc.section.9.4.2"><a href="#rfc.section.9.4.2">9.4.2</a>&nbsp;<a id="status.401" href="#status.401">401 Unauthorized</a></h3>
    1168       <p id="rfc.section.9.4.2.p.1">The request requires user authentication (see <a href="#Part7" id="rfc.xref.Part7.5"><cite title="HTTP/1.1, part 7: Authentication">[Part7]</cite></a>).
     1203      <p id="rfc.section.9.4.2.p.1">The request requires user authentication (see <a href="#Part7" id="rfc.xref.Part7.9"><cite title="HTTP/1.1, part 7: Authentication">[Part7]</cite></a>).
    11691204      </p>
    11701205      <div id="rfc.iref.42"></div>
    … …  
    12131248      <div id="rfc.iref.s.25"></div>
    12141249      <h3 id="rfc.section.9.4.8"><a href="#rfc.section.9.4.8">9.4.8</a>&nbsp;<a id="status.407" href="#status.407">407 Proxy Authentication Required</a></h3>
    1215       <p id="rfc.section.9.4.8.p.1">This code is similar to 401 (Unauthorized), but indicates that the client must first authenticate itself with the proxy (see <a href="#Part7" id="rfc.xref.Part7.6"><cite title="HTTP/1.1, part 7: Authentication">[Part7]</cite></a>).
     1250      <p id="rfc.section.9.4.8.p.1">This code is similar to 401 (Unauthorized), but indicates that the client must first authenticate itself with the proxy (see <a href="#Part7" id="rfc.xref.Part7.10"><cite title="HTTP/1.1, part 7: Authentication">[Part7]</cite></a>).
    12161251      </p>
    12171252      <div id="rfc.iref.48"></div>
    … …  
    12561291      <h3 id="rfc.section.9.4.13"><a href="#rfc.section.9.4.13">9.4.13</a>&nbsp;<a id="status.412" href="#status.412">412 Precondition Failed</a></h3>
    12571292      <p id="rfc.section.9.4.13.p.1">The precondition given in one or more of the request-header fields evaluated to false when it was tested on the server, as
    1258          defined in <a href="#Part4" id="rfc.xref.Part4.8"><cite title="HTTP/1.1, part 4: Conditional Requests">[Part4]</cite></a>.
     1293         defined in <a href="#Part4" id="rfc.xref.Part4.13"><cite title="HTTP/1.1, part 4: Conditional Requests">[Part4]</cite></a>.
    12591294      </p>
    12601295      <div id="rfc.iref.53"></div>
    … …  
    12841319      <div id="rfc.iref.s.34"></div>
    12851320      <h3 id="rfc.section.9.4.17"><a href="#rfc.section.9.4.17">9.4.17</a>&nbsp;<a id="status.416" href="#status.416">416 Requested Range Not Satisfiable</a></h3>
    1286       <p id="rfc.section.9.4.17.p.1">The request included a Range request-header field (<a href="p5-range.html#header.range" title="Range">Section 6.4</a> of <a href="#Part5" id="rfc.xref.Part5.7"><cite title="HTTP/1.1, part 5: Range Requests and Partial Responses">[Part5]</cite></a>) and none of the range-specifier values in this field overlap the current extent of the selected resource.
     1321      <p id="rfc.section.9.4.17.p.1">The request included a Range request-header field (<a href="p5-range.html#header.range" title="Range">Section 6.4</a> of <a href="#Part5" id="rfc.xref.Part5.10"><cite title="HTTP/1.1, part 5: Range Requests and Partial Responses">[Part5]</cite></a>) and none of the range-specifier values in this field overlap the current extent of the selected resource.
    12871322      </p>
    12881323      <div id="rfc.iref.57"></div>
    … …  
    13391374      <p id="rfc.section.9.5.6.p.1">The server does not support, or refuses to support, the protocol version that was used in the request message. The server
    13401375         is indicating that it is unable or unwilling to complete the request using the same major version as the client, as described
    1341          in <a href="p1-messaging.html#http.version" title="HTTP Version">Section 3.1</a> of <a href="#Part1" id="rfc.xref.Part1.13"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, other than with this error message. The response <em class="bcp14">SHOULD</em> contain an entity describing why that version is not supported and what other protocols are supported by that server.
     1376         in <a href="p1-messaging.html#http.version" title="HTTP Version">Section 3.1</a> of <a href="#Part1" id="rfc.xref.Part1.20"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, other than with this error message. The response <em class="bcp14">SHOULD</em> contain an entity describing why that version is not supported and what other protocols are supported by that server.
    13421377      </p>
    13431378      <h1 id="rfc.section.10"><a href="#rfc.section.10">10.</a>&nbsp;<a id="header.fields" href="#header.fields">Header Field Definitions</a></h1>
    … …  
    13521387         of this field is strictly to inform the recipient of valid methods associated with the resource. An Allow header field <em class="bcp14">MUST</em> be present in a 405 (Method Not Allowed) response.
    13531388      </p>
    1354       <div id="rfc.figure.u.7"></div><pre class="inline"><span id="rfc.iref.g.9"></span>  Allow   = "Allow" ":" #Method
     1389      <div id="rfc.figure.u.8"></div><pre class="inline"><span id="rfc.iref.g.9"></span>  Allow   = "Allow" ":" #Method
    13551390</pre><p id="rfc.section.10.1.p.3">Example of use:</p>
    1356       <div id="rfc.figure.u.8"></div><pre class="text">       Allow: GET, HEAD, PUT
     1391      <div id="rfc.figure.u.9"></div><pre class="text">       Allow: GET, HEAD, PUT
    13571392</pre><p id="rfc.section.10.1.p.5">This field cannot prevent a client from trying other methods. However, the indications given by the Allow header field value <em class="bcp14">SHOULD</em> be followed. The actual set of allowed methods is defined by the origin server at the time of each request.
    13581393      </p>
    … …  
    13671402      <h2 id="rfc.section.10.2"><a href="#rfc.section.10.2">10.2</a>&nbsp;<a id="header.expect" href="#header.expect">Expect</a></h2>
    13681403      <p id="rfc.section.10.2.p.1">The Expect request-header field is used to indicate that particular server behaviors are required by the client.</p>
    1369       <div id="rfc.figure.u.9"></div><pre class="inline"><span id="rfc.iref.g.10"></span><span id="rfc.iref.g.11"></span><span id="rfc.iref.g.12"></span><span id="rfc.iref.g.13"></span>  Expect       =  "Expect" ":" 1#expectation
     1404      <div id="rfc.figure.u.10"></div><pre class="inline"><span id="rfc.iref.g.10"></span><span id="rfc.iref.g.11"></span><span id="rfc.iref.g.12"></span><span id="rfc.iref.g.13"></span>  Expect       =  "Expect" ":" 1#expectation
    13701405 
    13711406  expectation  =  "100-continue" | expectation-extension
    … …  
    13861421      </p>
    13871422      <p id="rfc.section.10.2.p.7">Many older HTTP/1.0 and HTTP/1.1 applications do not understand the Expect header.</p>
    1388       <p id="rfc.section.10.2.p.8">See <a href="p1-messaging.html#use.of.the.100.status" title="Use of the 100 (Continue) Status">Section 7.2.3</a> of <a href="#Part1" id="rfc.xref.Part1.14"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a> for the use of the 100 (Continue) status.
     1423      <p id="rfc.section.10.2.p.8">See <a href="p1-messaging.html#use.of.the.100.status" title="Use of the 100 (Continue) Status">Section 7.2.3</a> of <a href="#Part1" id="rfc.xref.Part1.21"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a> for the use of the 100 (Continue) status.
    13891424      </p>
    13901425      <div id="rfc.iref.f.1"></div>
    … …  
    13931428      <p id="rfc.section.10.3.p.1">The From request-header field, if given, <em class="bcp14">SHOULD</em> contain an Internet e-mail address for the human user who controls the requesting user agent. The address <em class="bcp14">SHOULD</em> be machine-usable, as defined by "mailbox" in <a href="http://tools.ietf.org/html/rfc2822#section-3.4">Section 3.4</a> of <a href="#RFC2822" id="rfc.xref.RFC2822.1"><cite title="Internet Message Format">[RFC2822]</cite></a>:
    13941429      </p>
    1395       <div id="rfc.figure.u.10"></div><pre class="inline"><span id="rfc.iref.g.14"></span>  From   = "From" ":" mailbox
     1430      <div id="rfc.figure.u.11"></div><pre class="inline"><span id="rfc.iref.g.14"></span>  From    = "From" ":" mailbox
     1431 
     1432  mailbox = &lt;mailbox, defined in <a href="#RFC2822" id="rfc.xref.RFC2822.2"><cite title="Internet Message Format">[RFC2822]</cite></a>, <a href="http://tools.ietf.org/html/rfc2822#section-3.4">Section 3.4</a>&gt;
    13961433</pre><p id="rfc.section.10.3.p.3">An example is:</p>
    1397       <div id="rfc.figure.u.11"></div><pre class="text">    From: webmaster@example.org
     1434      <div id="rfc.figure.u.12"></div><pre class="text">    From: webmaster@example.org
    13981435</pre><p id="rfc.section.10.3.p.5">This header field <em class="bcp14">MAY</em> be used for logging purposes and as a means for identifying the source of invalid or unwanted requests. It <em class="bcp14">SHOULD NOT</em> be used as an insecure form of access protection. The interpretation of this field is that the request is being performed
    13991436         on behalf of the person given, who accepts responsibility for the method performed. In particular, robot agents <em class="bcp14">SHOULD</em> include this header so that the person responsible for running the robot can be contacted if problems occur on the receiving
    … …  
    14151452         URI.
    14161453      </p>
    1417       <div id="rfc.figure.u.12"></div><pre class="inline"><span id="rfc.iref.g.15"></span>  Location       = "Location" ":" absoluteURI [ "#" fragment ]
     1454      <div id="rfc.figure.u.13"></div><pre class="inline"><span id="rfc.iref.g.15"></span>  Location       = "Location" ":" absoluteURI [ "#" fragment ]
    14181455</pre><p id="rfc.section.10.4.p.3">An example is:</p>
    1419       <div id="rfc.figure.u.13"></div><pre class="text">    Location: http://www.example.org/pub/WWW/People.html
     1456      <div id="rfc.figure.u.14"></div><pre class="text">    Location: http://www.example.org/pub/WWW/People.html
    14201457</pre><p id="rfc.section.10.4.p.5"> </p>
    14211458      <dl class="empty">
    1422          <dd> <b>Note:</b> The Content-Location header field (<a href="p3-payload.html#header.content-location" title="Content-Location">Section 6.7</a> of <a href="#Part3" id="rfc.xref.Part3.7"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>) differs from Location in that the Content-Location identifies the original location of the entity enclosed in the request.
     1459         <dd> <b>Note:</b> The Content-Location header field (<a href="p3-payload.html#header.content-location" title="Content-Location">Section 6.7</a> of <a href="#Part3" id="rfc.xref.Part3.11"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>) differs from Location in that the Content-Location identifies the original location of the entity enclosed in the request.
    14231460            It is therefore possible for a response to contain header fields for both Location and Content-Location.
    14241461         </dd>
    … …  
    14381475         useful when the client is attempting to trace a request chain which appears to be failing or looping in mid-chain.
    14391476      </p>
    1440       <div id="rfc.figure.u.14"></div><pre class="inline"><span id="rfc.iref.g.16"></span>  Max-Forwards   = "Max-Forwards" ":" 1*DIGIT
     1477      <div id="rfc.figure.u.15"></div><pre class="inline"><span id="rfc.iref.g.16"></span>  Max-Forwards   = "Max-Forwards" ":" 1*DIGIT
    14411478</pre><p id="rfc.section.10.5.p.3">The Max-Forwards value is a decimal integer indicating the remaining number of times this request message may be forwarded.</p>
    14421479      <p id="rfc.section.10.5.p.4">Each proxy or gateway recipient of a TRACE or OPTIONS request containing a Max-Forwards header field <em class="bcp14">MUST</em> check and update its value prior to forwarding the request. If the received value is zero (0), the recipient <em class="bcp14">MUST NOT</em> forward the request; instead, it <em class="bcp14">MUST</em> respond as the final recipient. If the received Max-Forwards value is greater than zero, then the forwarded message <em class="bcp14">MUST</em> contain an updated Max-Forwards field with a value decremented by one (1).
    … …  
    14531490         obsolete or mistyped links to be traced for maintenance. The Referer field <em class="bcp14">MUST NOT</em> be sent if the Request-URI was obtained from a source that does not have its own URI, such as input from the user keyboard.
    14541491      </p>
    1455       <div id="rfc.figure.u.15"></div><pre class="inline"><span id="rfc.iref.g.17"></span>  Referer        = "Referer" ":" ( absoluteURI | relativeURI )
     1492      <div id="rfc.figure.u.16"></div><pre class="inline"><span id="rfc.iref.g.17"></span>  Referer        = "Referer" ":" ( absoluteURI | relativeURI )
    14561493</pre><p id="rfc.section.10.6.p.3">Example:</p>
    1457       <div id="rfc.figure.u.16"></div><pre class="text">    Referer: http://www.example.org/hypertext/Overview.html
     1494      <div id="rfc.figure.u.17"></div><pre class="text">    Referer: http://www.example.org/hypertext/Overview.html
    14581495</pre><p id="rfc.section.10.6.p.5">If the field value is a relative URI, it <em class="bcp14">SHOULD</em> be interpreted relative to the Request-URI. The URI <em class="bcp14">MUST NOT</em> include a fragment. See <a href="#encoding.sensitive.information.in.uris" title="Encoding Sensitive Information in URIs">Section&nbsp;12.2</a> for security considerations.
    14591496      </p>
    … …  
    14661503         the time of the response.
    14671504      </p>
    1468       <div id="rfc.figure.u.17"></div><pre class="inline"><span id="rfc.iref.g.18"></span>  Retry-After  = "Retry-After" ":" ( HTTP-date | delta-seconds )
     1505      <div id="rfc.figure.u.18"></div><pre class="inline"><span id="rfc.iref.g.18"></span>  Retry-After  = "Retry-After" ":" ( HTTP-date | delta-seconds )
    14691506</pre><p id="rfc.section.10.7.p.3">Two examples of its use are</p>
    1470       <div id="rfc.figure.u.18"></div><pre class="text">    Retry-After: Fri, 31 Dec 1999 23:59:59 GMT
     1507      <div id="rfc.figure.u.19"></div><pre class="text">    Retry-After: Fri, 31 Dec 1999 23:59:59 GMT
    14711508    Retry-After: 120
    14721509</pre><p id="rfc.section.10.7.p.5">In the latter example, the delay is 2 minutes.</p>
    … …  
    14751512      <h2 id="rfc.section.10.8"><a href="#rfc.section.10.8">10.8</a>&nbsp;<a id="header.server" href="#header.server">Server</a></h2>
    14761513      <p id="rfc.section.10.8.p.1">The Server response-header field contains information about the software used by the origin server to handle the request.
    1477          The field can contain multiple product tokens (<a href="p1-messaging.html#product.tokens" title="Product Tokens">Section 3.5</a> of <a href="#Part1" id="rfc.xref.Part1.15"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>) and comments identifying the server and any significant subproducts. The product tokens are listed in order of their significance
     1514         The field can contain multiple product tokens (<a href="p1-messaging.html#product.tokens" title="Product Tokens">Section 3.5</a> of <a href="#Part1" id="rfc.xref.Part1.22"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>) and comments identifying the server and any significant subproducts. The product tokens are listed in order of their significance
    14781515         for identifying the application.
    14791516      </p>
    1480       <div id="rfc.figure.u.19"></div><pre class="inline"><span id="rfc.iref.g.19"></span>  Server         = "Server" ":" 1*( product | comment )
     1517      <div id="rfc.figure.u.20"></div><pre class="inline"><span id="rfc.iref.g.19"></span>  Server         = "Server" ":" 1*( product | comment )
    14811518</pre><p id="rfc.section.10.8.p.3">Example:</p>
    1482       <div id="rfc.figure.u.20"></div><pre class="text">    Server: CERN/3.0 libwww/2.17
    1483 </pre><p id="rfc.section.10.8.p.5">If the response is being forwarded through a proxy, the proxy application <em class="bcp14">MUST NOT</em> modify the Server response-header. Instead, it <em class="bcp14">MUST</em> include a Via field (as described in <a href="p1-messaging.html#header.via" title="Via">Section 8.9</a> of <a href="#Part1" id="rfc.xref.Part1.16"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>).
     1519      <div id="rfc.figure.u.21"></div><pre class="text">    Server: CERN/3.0 libwww/2.17
     1520</pre><p id="rfc.section.10.8.p.5">If the response is being forwarded through a proxy, the proxy application <em class="bcp14">MUST NOT</em> modify the Server response-header. Instead, it <em class="bcp14">MUST</em> include a Via field (as described in <a href="p1-messaging.html#header.via" title="Via">Section 8.9</a> of <a href="#Part1" id="rfc.xref.Part1.23"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>).
    14841521      </p>
    14851522      <dl class="empty">
    … …  
    14941531      <p id="rfc.section.10.9.p.1">The User-Agent request-header field contains information about the user agent originating the request. This is for statistical
    14951532         purposes, the tracing of protocol violations, and automated recognition of user agents for the sake of tailoring responses
    1496          to avoid particular user agent limitations. User agents <em class="bcp14">SHOULD</em> include this field with requests. The field can contain multiple product tokens (<a href="p1-messaging.html#product.tokens" title="Product Tokens">Section 3.5</a> of <a href="#Part1" id="rfc.xref.Part1.17"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>) and comments identifying the agent and any subproducts which form a significant part of the user agent. By convention, the
     1533         to avoid particular user agent limitations. User agents <em class="bcp14">SHOULD</em> include this field with requests. The field can contain multiple product tokens (<a href="p1-messaging.html#product.tokens" title="Product Tokens">Section 3.5</a> of <a href="#Part1" id="rfc.xref.Part1.24"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>) and comments identifying the agent and any subproducts which form a significant part of the user agent. By convention, the
    14971534         product tokens are listed in order of their significance for identifying the application.
    14981535      </p>
    1499       <div id="rfc.figure.u.21"></div><pre class="inline"><span id="rfc.iref.g.20"></span>  User-Agent     = "User-Agent" ":" 1*( product | comment )
     1536      <div id="rfc.figure.u.22"></div><pre class="inline"><span id="rfc.iref.g.20"></span>  User-Agent     = "User-Agent" ":" 1*( product | comment )
    15001537</pre><p id="rfc.section.10.9.p.3">Example:</p>
    1501       <div id="rfc.figure.u.22"></div><pre class="text">    User-Agent: CERN-LineMode/2.15 libwww/2.17b3
     1538      <div id="rfc.figure.u.23"></div><pre class="text">    User-Agent: CERN-LineMode/2.15 libwww/2.17b3
    15021539</pre><h1 id="rfc.section.11"><a href="#rfc.section.11">11.</a>&nbsp;<a id="IANA.considerations" href="#IANA.considerations">IANA Considerations</a></h1>
    15031540      <p id="rfc.section.11.p.1"> <span class="comment">[rfc.comment.1: TBD.]</span>
    … …  
    16751712      </p>
    16761713      <p id="rfc.section.A.2.p.4">In the description of the Server header, the Via field was described as a SHOULD. The requirement was and is stated correctly
    1677          in the description of the Via header in <a href="p1-messaging.html#header.via" title="Via">Section 8.9</a> of <a href="#Part1" id="rfc.xref.Part1.18"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>. (<a href="#header.server" id="rfc.xref.header.server.3" title="Server">Section&nbsp;10.8</a>)
     1714         in the description of the Via header in <a href="p1-messaging.html#header.via" title="Via">Section 8.9</a> of <a href="#Part1" id="rfc.xref.Part1.25"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>. (<a href="#header.server" id="rfc.xref.header.server.3" title="Server">Section&nbsp;10.8</a>)
    16781715      </p>
    16791716      <h1 id="rfc.section.B"><a href="#rfc.section.B">B.</a>&nbsp;Change Log (to be removed by RFC Editor before publication)
    … …  
    17061743      <p id="rfc.section.B.2.p.2">Other changes: </p>
    17071744      <ul>
    1708          <li>Move definitions of 304 and 412 condition codes to <a href="#Part4" id="rfc.xref.Part4.9"><cite title="HTTP/1.1, part 4: Conditional Requests">[Part4]</cite></a>
     1745         <li>Move definitions of 304 and 412 condition codes to <a href="#Part4" id="rfc.xref.Part4.14"><cite title="HTTP/1.1, part 4: Conditional Requests">[Part4]</cite></a>
    17091746         </li>
    17101747      </ul>
    … …  
    19061943            </li>
    19071944            <li class="indline0"><a id="rfc.index.P" href="#rfc.index.P"><b>P</b></a><ul class="ind">
    1908                   <li class="indline1"><em>Part1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.1">1</a>, <a class="iref" href="#rfc.xref.Part1.2">2</a>, <a class="iref" href="#rfc.xref.Part1.3">2</a>, <a class="iref" href="#rfc.xref.Part1.4">2</a>, <a class="iref" href="#rfc.xref.Part1.5">2</a>, <a class="iref" href="#rfc.xref.Part1.6">2</a>, <a class="iref" href="#rfc.xref.Part1.7">2</a>, <a class="iref" href="#rfc.xref.Part1.8">4</a>, <a class="iref" href="#rfc.xref.Part1.9">4</a>, <a class="iref" href="#rfc.xref.Part1.10">7</a>, <a class="iref" href="#rfc.xref.Part1.11">8.8</a>, <a class="iref" href="#rfc.xref.Part1.12">9.1.1</a>, <a class="iref" href="#rfc.xref.Part1.13">9.5.6</a>, <a class="iref" href="#rfc.xref.Part1.14">10.2</a>, <a class="iref" href="#rfc.xref.Part1.15">10.8</a>, <a class="iref" href="#rfc.xref.Part1.16">10.8</a>, <a class="iref" href="#rfc.xref.Part1.17">10.9</a>, <a class="iref" href="#Part1"><b>14.1</b></a>, <a class="iref" href="#rfc.xref.Part1.18">A.2</a><ul class="ind">
     1945                  <li class="indline1"><em>Part1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.1">1</a>, <a class="iref" href="#rfc.xref.Part1.2">2</a>, <a class="iref" href="#rfc.xref.Part1.3">2</a>, <a class="iref" href="#rfc.xref.Part1.4">2</a>, <a class="iref" href="#rfc.xref.Part1.5">2</a>, <a class="iref" href="#rfc.xref.Part1.6">2</a>, <a class="iref" href="#rfc.xref.Part1.7">2</a>, <a class="iref" href="#rfc.xref.Part1.8">2</a>, <a class="iref" href="#rfc.xref.Part1.9">2</a>, <a class="iref" href="#rfc.xref.Part1.10">2</a>, <a class="iref" href="#rfc.xref.Part1.11">2</a>, <a class="iref" href="#rfc.xref.Part1.12">2</a>, <a class="iref" href="#rfc.xref.Part1.13">2</a>, <a class="iref" href="#rfc.xref.Part1.14">2</a>, <a class="iref" href="#rfc.xref.Part1.15">4</a>, <a class="iref" href="#rfc.xref.Part1.16">4</a>, <a class="iref" href="#rfc.xref.Part1.17">7</a>, <a class="iref" href="#rfc.xref.Part1.18">8.8</a>, <a class="iref" href="#rfc.xref.Part1.19">9.1.1</a>, <a class="iref" href="#rfc.xref.Part1.20">9.5.6</a>, <a class="iref" href="#rfc.xref.Part1.21">10.2</a>, <a class="iref" href="#rfc.xref.Part1.22">10.8</a>, <a class="iref" href="#rfc.xref.Part1.23">10.8</a>, <a class="iref" href="#rfc.xref.Part1.24">10.9</a>, <a class="iref" href="#Part1"><b>14.1</b></a>, <a class="iref" href="#rfc.xref.Part1.25">A.2</a><ul class="ind">
    19091946                        <li class="indline1"><em>Section 2.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.2">2</a></li>
    19101947                        <li class="indline1"><em>Section 2.2</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.3">2</a>, <a class="iref" href="#rfc.xref.Part1.4">2</a>, <a class="iref" href="#rfc.xref.Part1.5">2</a>, <a class="iref" href="#rfc.xref.Part1.6">2</a>, <a class="iref" href="#rfc.xref.Part1.7">2</a></li>
    1911                         <li class="indline1"><em>Section 3.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.13">9.5.6</a></li>
    1912                         <li class="indline1"><em>Section 3.5</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.15">10.8</a>, <a class="iref" href="#rfc.xref.Part1.17">10.9</a></li>
    1913                         <li class="indline1"><em>Section 4.3</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.10">7</a></li>
    1914                         <li class="indline1"><em>Section 7.2.3</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.12">9.1.1</a>, <a class="iref" href="#rfc.xref.Part1.14">10.2</a></li>
    1915                         <li class="indline1"><em>Section 8.4</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.8">4</a></li>
    1916                         <li class="indline1"><em>Section 8.8</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.9">4</a></li>
    1917                         <li class="indline1"><em>Section 8.9</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.11">8.8</a>, <a class="iref" href="#rfc.xref.Part1.16">10.8</a>, <a class="iref" href="#rfc.xref.Part1.18">A.2</a></li>
     1948                        <li class="indline1"><em>Section 3.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.20">9.5.6</a></li>
     1949                        <li class="indline1"><em>Section 3.2.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.8">2</a>, <a class="iref" href="#rfc.xref.Part1.9">2</a>, <a class="iref" href="#rfc.xref.Part1.13">2</a></li>
     1950                        <li class="indline1"><em>Section 3.3.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.10">2</a></li>
     1951                        <li class="indline1"><em>Section 3.5</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.12">2</a>, <a class="iref" href="#rfc.xref.Part1.22">10.8</a>, <a class="iref" href="#rfc.xref.Part1.24">10.9</a></li>
     1952                        <li class="indline1"><em>Section 4.3</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.17">7</a></li>
     1953                        <li class="indline1"><em>Section 7.2.3</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.19">9.1.1</a>, <a class="iref" href="#rfc.xref.Part1.21">10.2</a></li>
     1954                        <li class="indline1"><em>Section 8.4</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.11">2</a>, <a class="iref" href="#rfc.xref.Part1.15">4</a></li>
     1955                        <li class="indline1"><em>Section 8.8</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.14">2</a>, <a class="iref" href="#rfc.xref.Part1.16">4</a></li>
     1956                        <li class="indline1"><em>Section 8.9</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.18">8.8</a>, <a class="iref" href="#rfc.xref.Part1.23">10.8</a>, <a class="iref" href="#rfc.xref.Part1.25">A.2</a></li>
    19181957                     </ul>
    19191958                  </li>
    1920                   <li class="indline1"><em>Part3</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part3.1">4</a>, <a class="iref" href="#rfc.xref.Part3.2">4</a>, <a class="iref" href="#rfc.xref.Part3.3">4</a>, <a class="iref" href="#rfc.xref.Part3.4">4</a>, <a class="iref" href="#rfc.xref.Part3.5">7</a>, <a class="iref" href="#rfc.xref.Part3.6">9.3.1</a>, <a class="iref" href="#rfc.xref.Part3.7">10.4</a>, <a class="iref" href="#Part3"><b>14.1</b></a><ul class="ind">
    1921                         <li class="indline1"><em>Section 5</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part3.6">9.3.1</a></li>
    1922                         <li class="indline1"><em>Section 6.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part3.1">4</a></li>
    1923                         <li class="indline1"><em>Section 6.2</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part3.2">4</a></li>
    1924                         <li class="indline1"><em>Section 6.3</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part3.3">4</a></li>
    1925                         <li class="indline1"><em>Section 6.4</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part3.4">4</a></li>
    1926                         <li class="indline1"><em>Section 6.7</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part3.7">10.4</a></li>
     1959                  <li class="indline1"><em>Part3</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part3.1">2</a>, <a class="iref" href="#rfc.xref.Part3.2">2</a>, <a class="iref" href="#rfc.xref.Part3.3">2</a>, <a class="iref" href="#rfc.xref.Part3.4">2</a>, <a class="iref" href="#rfc.xref.Part3.5">4</a>, <a class="iref" href="#rfc.xref.Part3.6">4</a>, <a class="iref" href="#rfc.xref.Part3.7">4</a>, <a class="iref" href="#rfc.xref.Part3.8">4</a>, <a class="iref" href="#rfc.xref.Part3.9">7</a>, <a class="iref" href="#rfc.xref.Part3.10">9.3.1</a>, <a class="iref" href="#rfc.xref.Part3.11">10.4</a>, <a class="iref" href="#Part3"><b>14.1</b></a><ul class="ind">
     1960                        <li class="indline1"><em>Section 5</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part3.10">9.3.1</a></li>
     1961                        <li class="indline1"><em>Section 6.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part3.1">2</a>, <a class="iref" href="#rfc.xref.Part3.5">4</a></li>
     1962                        <li class="indline1"><em>Section 6.2</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part3.2">2</a>, <a class="iref" href="#rfc.xref.Part3.6">4</a></li>
     1963                        <li class="indline1"><em>Section 6.3</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part3.3">2</a>, <a class="iref" href="#rfc.xref.Part3.7">4</a></li>
     1964                        <li class="indline1"><em>Section 6.4</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part3.4">2</a>, <a class="iref" href="#rfc.xref.Part3.8">4</a></li>
     1965                        <li class="indline1"><em>Section 6.7</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part3.11">10.4</a></li>
    19271966                     </ul>
    19281967                  </li>
    1929                   <li class="indline1"><em>Part4</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part4.1">4</a>, <a class="iref" href="#rfc.xref.Part4.2">4</a>, <a class="iref" href="#rfc.xref.Part4.3">4</a>, <a class="iref" href="#rfc.xref.Part4.4">4</a>, <a class="iref" href="#rfc.xref.Part4.5">6</a>, <a class="iref" href="#rfc.xref.Part4.6">9.2.2</a>, <a class="iref" href="#rfc.xref.Part4.7">9.3.5</a>, <a class="iref" href="#rfc.xref.Part4.8">9.4.13</a>, <a class="iref" href="#Part4"><b>14.1</b></a>, <a class="iref" href="#rfc.xref.Part4.9">B.2</a><ul class="ind">
    1930                         <li class="indline1"><em>Section 7.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part4.5">6</a>, <a class="iref" href="#rfc.xref.Part4.6">9.2.2</a></li>
    1931                         <li class="indline1"><em>Section 7.2</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part4.1">4</a></li>
    1932                         <li class="indline1"><em>Section 7.3</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part4.2">4</a></li>
    1933                         <li class="indline1"><em>Section 7.4</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part4.3">4</a></li>
    1934                         <li class="indline1"><em>Section 7.5</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part4.4">4</a></li>
     1968                  <li class="indline1"><em>Part4</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part4.1">2</a>, <a class="iref" href="#rfc.xref.Part4.2">2</a>, <a class="iref" href="#rfc.xref.Part4.3">2</a>, <a class="iref" href="#rfc.xref.Part4.4">2</a>, <a class="iref" href="#rfc.xref.Part4.5">2</a>, <a class="iref" href="#rfc.xref.Part4.6">4</a>, <a class="iref" href="#rfc.xref.Part4.7">4</a>, <a class="iref" href="#rfc.xref.Part4.8">4</a>, <a class="iref" href="#rfc.xref.Part4.9">4</a>, <a class="iref" href="#rfc.xref.Part4.10">6</a>, <a class="iref" href="#rfc.xref.Part4.11">9.2.2</a>, <a class="iref" href="#rfc.xref.Part4.12">9.3.5</a>, <a class="iref" href="#rfc.xref.Part4.13">9.4.13</a>, <a class="iref" href="#Part4"><b>14.1</b></a>, <a class="iref" href="#rfc.xref.Part4.14">B.2</a><ul class="ind">
     1969                        <li class="indline1"><em>Section 7.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part4.1">2</a>, <a class="iref" href="#rfc.xref.Part4.10">6</a>, <a class="iref" href="#rfc.xref.Part4.11">9.2.2</a></li>
     1970                        <li class="indline1"><em>Section 7.2</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part4.2">2</a>, <a class="iref" href="#rfc.xref.Part4.6">4</a></li>
     1971                        <li class="indline1"><em>Section 7.3</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part4.3">2</a>, <a class="iref" href="#rfc.xref.Part4.7">4</a></li>
     1972                        <li class="indline1"><em>Section 7.4</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part4.4">2</a>, <a class="iref" href="#rfc.xref.Part4.8">4</a></li>
     1973                        <li class="indline1"><em>Section 7.5</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part4.5">2</a>, <a class="iref" href="#rfc.xref.Part4.9">4</a></li>
    19351974                     </ul>
    19361975                  </li>
    1937                   <li class="indline1"><em>Part5</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part5.1">4</a>, <a class="iref" href="#rfc.xref.Part5.2">4</a>, <a class="iref" href="#rfc.xref.Part5.3">6</a>, <a class="iref" href="#rfc.xref.Part5.4">8.3</a>, <a class="iref" href="#rfc.xref.Part5.5">9.1.2</a>, <a class="iref" href="#rfc.xref.Part5.6">9.2.7</a>, <a class="iref" href="#rfc.xref.Part5.7">9.4.17</a>, <a class="iref" href="#Part5"><b>14.1</b></a><ul class="ind">
    1938                         <li class="indline1"><em>Section 6.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part5.3">6</a></li>
    1939                         <li class="indline1"><em>Section 6.3</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part5.1">4</a></li>
    1940                         <li class="indline1"><em>Section 6.4</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part5.2">4</a>, <a class="iref" href="#rfc.xref.Part5.4">8.3</a>, <a class="iref" href="#rfc.xref.Part5.5">9.1.2</a>, <a class="iref" href="#rfc.xref.Part5.7">9.4.17</a></li>
     1976                  <li class="indline1"><em>Part5</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part5.1">2</a>, <a class="iref" href="#rfc.xref.Part5.2">2</a>, <a class="iref" href="#rfc.xref.Part5.3">2</a>, <a class="iref" href="#rfc.xref.Part5.4">4</a>, <a class="iref" href="#rfc.xref.Part5.5">4</a>, <a class="iref" href="#rfc.xref.Part5.6">6</a>, <a class="iref" href="#rfc.xref.Part5.7">8.3</a>, <a class="iref" href="#rfc.xref.Part5.8">9.1.2</a>, <a class="iref" href="#rfc.xref.Part5.9">9.2.7</a>, <a class="iref" href="#rfc.xref.Part5.10">9.4.17</a>, <a class="iref" href="#Part5"><b>14.1</b></a><ul class="ind">
     1977                        <li class="indline1"><em>Section 6.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part5.1">2</a>, <a class="iref" href="#rfc.xref.Part5.6">6</a></li>
     1978                        <li class="indline1"><em>Section 6.3</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part5.2">2</a>, <a class="iref" href="#rfc.xref.Part5.4">4</a></li>
     1979                        <li class="indline1"><em>Section 6.4</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part5.3">2</a>, <a class="iref" href="#rfc.xref.Part5.5">4</a>, <a class="iref" href="#rfc.xref.Part5.7">8.3</a>, <a class="iref" href="#rfc.xref.Part5.8">9.1.2</a>, <a class="iref" href="#rfc.xref.Part5.10">9.4.17</a></li>
    19411980                     </ul>
    19421981                  </li>
    1943                   <li class="indline1"><em>Part6</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part6.1">6</a>, <a class="iref" href="#rfc.xref.Part6.2">6</a>, <a class="iref" href="#rfc.xref.Part6.3">8.3</a>, <a class="iref" href="#Part6"><b>14.1</b></a><ul class="ind">
    1944                         <li class="indline1"><em>Section 16.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part6.1">6</a></li>
    1945                         <li class="indline1"><em>Section 16.5</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part6.2">6</a></li>
     1982                  <li class="indline1"><em>Part6</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part6.1">2</a>, <a class="iref" href="#rfc.xref.Part6.2">2</a>, <a class="iref" href="#rfc.xref.Part6.3">2</a>, <a class="iref" href="#rfc.xref.Part6.4">6</a>, <a class="iref" href="#rfc.xref.Part6.5">6</a>, <a class="iref" href="#rfc.xref.Part6.6">8.3</a>, <a class="iref" href="#Part6"><b>14.1</b></a><ul class="ind">
     1983                        <li class="indline1"><em>Section 16.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part6.1">2</a>, <a class="iref" href="#rfc.xref.Part6.2">2</a>, <a class="iref" href="#rfc.xref.Part6.4">6</a></li>
     1984                        <li class="indline1"><em>Section 16.5</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part6.3">2</a>, <a class="iref" href="#rfc.xref.Part6.5">6</a></li>
    19461985                     </ul>
    19471986                  </li>
    1948                   <li class="indline1"><em>Part7</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part7.1">4</a>, <a class="iref" href="#rfc.xref.Part7.2">4</a>, <a class="iref" href="#rfc.xref.Part7.3">6</a>, <a class="iref" href="#rfc.xref.Part7.4">6</a>, <a class="iref" href="#rfc.xref.Part7.5">9.4.2</a>, <a class="iref" href="#rfc.xref.Part7.6">9.4.8</a>, <a class="iref" href="#Part7"><b>14.1</b></a><ul class="ind">
    1949                         <li class="indline1"><em>Section 4.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part7.1">4</a></li>
    1950                         <li class="indline1"><em>Section 4.2</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part7.3">6</a></li>
    1951                         <li class="indline1"><em>Section 4.3</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part7.2">4</a></li>
    1952                         <li class="indline1"><em>Section 4.4</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part7.4">6</a></li>
     1987                  <li class="indline1"><em>Part7</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part7.1">2</a>, <a class="iref" href="#rfc.xref.Part7.2">2</a>, <a class="iref" href="#rfc.xref.Part7.3">2</a>, <a class="iref" href="#rfc.xref.Part7.4">2</a>, <a class="iref" href="#rfc.xref.Part7.5">4</a>, <a class="iref" href="#rfc.xref.Part7.6">4</a>, <a class="iref" href="#rfc.xref.Part7.7">6</a>, <a class="iref" href="#rfc.xref.Part7.8">6</a>, <a class="iref" href="#rfc.xref.Part7.9">9.4.2</a>, <a class="iref" href="#rfc.xref.Part7.10">9.4.8</a>, <a class="iref" href="#Part7"><b>14.1</b></a><ul class="ind">
     1988                        <li class="indline1"><em>Section 4.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part7.1">2</a>, <a class="iref" href="#rfc.xref.Part7.5">4</a></li>
     1989                        <li class="indline1"><em>Section 4.2</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part7.2">2</a>, <a class="iref" href="#rfc.xref.Part7.7">6</a></li>
     1990                        <li class="indline1"><em>Section 4.3</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part7.3">2</a>, <a class="iref" href="#rfc.xref.Part7.6">4</a></li>
     1991                        <li class="indline1"><em>Section 4.4</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part7.4">2</a>, <a class="iref" href="#rfc.xref.Part7.8">6</a></li>
    19531992                     </ul>
    19541993                  </li>
    … …  
    19652004                  <li class="indline1"><em>RFC2119</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC2119.1">1.1</a>, <a class="iref" href="#RFC2119"><b>14.1</b></a></li>
    19662005                  <li class="indline1"><em>RFC2616</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC2616.1">1</a>, <a class="iref" href="#RFC2616"><b>14.2</b></a>, <a class="iref" href="#rfc.xref.RFC2616.2">B.1</a></li>
    1967                   <li class="indline1"><em>RFC2822</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC2822.1">10.3</a>, <a class="iref" href="#RFC2822"><b>14.2</b></a><ul class="ind">
    1968                         <li class="indline1"><em>Section 3.4</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC2822.1">10.3</a></li>
     2006                  <li class="indline1"><em>RFC2822</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC2822.1">10.3</a>, <a class="iref" href="#rfc.xref.RFC2822.2">10.3</a>, <a class="iref" href="#RFC2822"><b>14.2</b></a><ul class="ind">
     2007                        <li class="indline1"><em>Section 3.4</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC2822.1">10.3</a>, <a class="iref" href="#rfc.xref.RFC2822.2">10.3</a></li>
    19692008                     </ul>
    19702009                  </li>
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