Changeset 1900


Ignore:
Timestamp:
16/09/12 06:35:33 (10 years ago)
Author:
fielding@…
Message:

(editorial) further simplify representation; remove bits that are defined under payload

Location:
draft-ietf-httpbis/latest
Files:
2 edited

Legend:

Unmodified
Added
Removed

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

    r1898 r1900  
    890890      </p>
    891891      <p id="rfc.section.3.p.4">For example, a representation in the payload of a PUT request (<a href="#PUT" id="rfc.xref.PUT.1" title="PUT">Section&nbsp;5.3.4</a>) represents the desired state of the target resource if the request is successfully applied, whereas a representation in
    892          the payload of a POST request (<a href="#POST" id="rfc.xref.POST.1" title="POST">Section&nbsp;5.3.3</a>) represents an anonymous resource for providing data to be processed, such as a specific encoding format for the information
    893          that a user entered within an HTML form.
    894       </p>
    895       <p id="rfc.section.3.p.5">Likewise, the payload of a <a href="#status.200" class="smpl">200 (OK)</a> response to GET (<a href="#GET" id="rfc.xref.GET.1" title="GET">Section&nbsp;5.3.1</a>) contains a representation of the target resource, as observed at the time of the message origination date (<a href="#header.date" id="rfc.xref.header.date.1" title="Date">Section&nbsp;8.2.1</a>), whereas the same response to POST might contain either a representation of the processing result or a current representation
    896          of the target resource after applying the processing. Response messages with an error status code usually contain a representation
    897          that describes the error and what next steps are suggested for resolving it.
    898       </p>
    899       <p id="rfc.section.3.p.6">A representation 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 3.3</a> of <a href="#Part1" id="rfc.xref.Part1.7"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>. The representation body is obtained from the message body by decoding any <a href="p1-messaging.html#header.transfer-encoding" class="smpl">Transfer-Encoding</a> that might have been applied to ensure safe and proper transfer of the message.
     892         the payload of a POST request (<a href="#POST" id="rfc.xref.POST.1" title="POST">Section&nbsp;5.3.3</a>) represents an anonymous resource for providing data to be processed, such as the information that a user entered within
     893         an HTML form.
     894      </p>
     895      <p id="rfc.section.3.p.5">Likewise, the payload of a <a href="#status.200" class="smpl">200 (OK)</a> response to GET (<a href="#GET" id="rfc.xref.GET.1" title="GET">Section&nbsp;5.3.1</a>) contains a representation of the target resource, as observed at the time of the message origination date (<a href="#header.date" id="rfc.xref.header.date.1" title="Date">Section&nbsp;8.2.1</a>), whereas the same status code in a response to POST might contain either a representation of the processing result or a
     896         current representation of the target resource after applying the processing. Some responses only contain the representation's
     897         header fields as the payload. Response messages with an error status code usually contain a representation that describes
     898         the error and what next steps are suggested for resolving it.
    900899      </p>
    901900      <h2 id="rfc.section.3.1"><a href="#rfc.section.3.1">3.1</a>&nbsp;<a id="associating.representation.with.resource" href="#associating.representation.with.resource">Associating a Representation with its Resource</a></h2>
    902901      <p id="rfc.section.3.1.p.1">It is sometimes necessary to determine an identifier for the resource associated with a representation.</p>
    903902      <p id="rfc.section.3.1.p.2">An HTTP request representation, when present, is always associated with an anonymous (i.e., unidentified) resource.</p>
    904       <p id="rfc.section.3.1.p.3">In the common case, an HTTP response is a representation of the target resource (see <a href="p1-messaging.html#effective.request.uri" title="Effective Request URI">Section 5.5</a> of <a href="#Part1" id="rfc.xref.Part1.8"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>). However, this is not always the case. To determine the URI of the resource a response is associated with, the following
     903      <p id="rfc.section.3.1.p.3">In the common case, an HTTP response is a representation of the target resource (see <a href="p1-messaging.html#effective.request.uri" title="Effective Request URI">Section 5.5</a> of <a href="#Part1" id="rfc.xref.Part1.7"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>). However, this is not always the case. To determine the URI of the resource a response is associated with, the following
    905904         rules are used (with the first applicable one being selected):
    906905      </p>
    … …  
    10291028      </p>
    10301029      <div id="rfc.figure.u.8"></div><pre class="inline"><span id="rfc.iref.g.4"></span>  <a href="#header.content-location" class="smpl">Content-Location</a> = <a href="#imported.abnf" class="smpl">absolute-URI</a> / <a href="#imported.abnf" class="smpl">partial-URI</a>
    1031 </pre><p id="rfc.section.3.2.4.p.3">The Content-Location value is not a replacement for the effective Request URI (<a href="p1-messaging.html#effective.request.uri" title="Effective Request URI">Section 5.5</a> of <a href="#Part1" id="rfc.xref.Part1.9"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>). It is representation metadata. It has the same syntax and semantics as the header field of the same name defined for MIME
     1030</pre><p id="rfc.section.3.2.4.p.3">The Content-Location value is not a replacement for the effective Request URI (<a href="p1-messaging.html#effective.request.uri" title="Effective Request URI">Section 5.5</a> of <a href="#Part1" id="rfc.xref.Part1.8"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>). It is representation metadata. It has the same syntax and semantics as the header field of the same name defined for MIME
    10321031         body parts in <a href="http://tools.ietf.org/html/rfc2557#section-4">Section 4</a> of <a href="#RFC2557" id="rfc.xref.RFC2557.1"><cite title="MIME Encapsulation of Aggregate Documents, such as HTML (MHTML)">[RFC2557]</cite></a>. However, its appearance in an HTTP message has some special implications for HTTP recipients.
    10331032      </p>
    … …  
    12201219               <tr>
    12211220                  <td class="left">Content-Length</td>
    1222                   <td class="left"><a href="p1-messaging.html#header.content-length" title="Content-Length">Section 3.3.2</a> of <a href="#Part1" id="rfc.xref.Part1.10"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a></td>
     1221                  <td class="left"><a href="p1-messaging.html#header.content-length" title="Content-Length">Section 3.3.2</a> of <a href="#Part1" id="rfc.xref.Part1.9"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a></td>
    12231222               </tr>
    12241223               <tr>
    … …  
    12301229      </div>
    12311230      <h2 id="rfc.section.4.2"><a href="#rfc.section.4.2">4.2</a>&nbsp;<a id="payload.body" href="#payload.body">Payload Body</a></h2>
    1232       <p id="rfc.section.4.2.p.1">A payload 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 3.3</a> of <a href="#Part1" id="rfc.xref.Part1.11"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>. The payload body is obtained from the message body by decoding any <a href="p1-messaging.html#header.transfer-encoding" class="smpl">Transfer-Encoding</a> that might have been applied to ensure safe and proper transfer of the message.
     1231      <p id="rfc.section.4.2.p.1">A payload 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 3.3</a> of <a href="#Part1" id="rfc.xref.Part1.10"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>. The payload body is obtained from the message body by decoding any <a href="p1-messaging.html#header.transfer-encoding" class="smpl">Transfer-Encoding</a> that might have been applied to ensure safe and proper transfer of the message.
    12331232      </p>
    12341233      <h1 id="rfc.section.5"><a href="#rfc.section.5">5.</a>&nbsp;<a id="methods" href="#methods">Request Methods</a></h1>
    … …  
    15021501         its behavior to blind forwarding of packets until the connection is closed.
    15031502      </p>
    1504       <p id="rfc.section.5.3.6.p.2">When using CONNECT, the request-target <em class="bcp14">MUST</em> use the authority form (<a href="p1-messaging.html#request-target" title="Request Target">Section 5.3</a> of <a href="#Part1" id="rfc.xref.Part1.12"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>); i.e., the request-target consists of only the host name and port number of the tunnel destination, separated by a colon.
     1503      <p id="rfc.section.5.3.6.p.2">When using CONNECT, the request-target <em class="bcp14">MUST</em> use the authority form (<a href="p1-messaging.html#request-target" title="Request Target">Section 5.3</a> of <a href="#Part1" id="rfc.xref.Part1.11"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>); i.e., the request-target consists of only the host name and port number of the tunnel destination, separated by a colon.
    15051504         For example,
    15061505      </p>
    … …  
    15471546         body to make more detailed queries on the server.
    15481547      </p>
    1549       <p id="rfc.section.5.3.7.p.4">If the request-target (<a href="p1-messaging.html#request-target" title="Request Target">Section 5.3</a> of <a href="#Part1" id="rfc.xref.Part1.13"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>) is an asterisk ("*"), the OPTIONS request is intended to apply to the server in general rather than to a specific resource.
     1548      <p id="rfc.section.5.3.7.p.4">If the request-target (<a href="p1-messaging.html#request-target" title="Request Target">Section 5.3</a> of <a href="#Part1" id="rfc.xref.Part1.12"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>) is an asterisk ("*"), the OPTIONS request is intended to apply to the server in general rather than to a specific resource.
    15501549         Since a server's communication options typically depend on the resource, the "*" request is only useful as a "ping" or "no-op"
    15511550         type of method; it does nothing beyond allowing the client to test the capabilities of the server. For example, this can be
    … …  
    15651564      </p>
    15661565      <p id="rfc.section.5.3.8.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
    1567          or diagnostic information. The value of the <a href="p1-messaging.html#header.via" class="smpl">Via</a> header field (<a href="p1-messaging.html#header.via" title="Via">Section 5.7</a> of <a href="#Part1" id="rfc.xref.Part1.14"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>) is of particular interest, since it acts as a trace of the request chain. Use of the <a href="#header.max-forwards" class="smpl">Max-Forwards</a> header field allows the client to limit the length of the request chain, which is useful for testing a chain of proxies forwarding
     1566         or diagnostic information. The value of the <a href="p1-messaging.html#header.via" class="smpl">Via</a> header field (<a href="p1-messaging.html#header.via" title="Via">Section 5.7</a> of <a href="#Part1" id="rfc.xref.Part1.13"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>) is of particular interest, since it acts as a trace of the request chain. Use of the <a href="#header.max-forwards" class="smpl">Max-Forwards</a> header field allows the client to limit the length of the request chain, which is useful for testing a chain of proxies forwarding
    15681567         messages in an infinite loop.
    15691568      </p>
    1570       <p id="rfc.section.5.3.8.p.3">If the request is valid, the response <em class="bcp14">SHOULD</em> have a <a href="#header.content-type" class="smpl">Content-Type</a> of "message/http" (see <a href="p1-messaging.html#internet.media.type.message.http" title="Internet Media Type message/http">Section 7.3.1</a> of <a href="#Part1" id="rfc.xref.Part1.15"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>) and contain a message body that encloses a copy of the entire request message. Responses to the TRACE method are not cacheable.
     1569      <p id="rfc.section.5.3.8.p.3">If the request is valid, the response <em class="bcp14">SHOULD</em> have a <a href="#header.content-type" class="smpl">Content-Type</a> of "message/http" (see <a href="p1-messaging.html#internet.media.type.message.http" title="Internet Media Type message/http">Section 7.3.1</a> of <a href="#Part1" id="rfc.xref.Part1.14"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>) and contain a message body that encloses a copy of the entire request message. Responses to the TRACE method are not cacheable.
    15711570      </p>
    15721571      <h1 id="rfc.section.6"><a href="#rfc.section.6">6.</a>&nbsp;<a id="request.header.fields" href="#request.header.fields">Request Header Fields</a></h1>
    … …  
    15891588               <tr>
    15901589                  <td class="left">Host</td>
    1591                   <td class="left"><a href="p1-messaging.html#header.host" title="Host">Section 5.4</a> of <a href="#Part1" id="rfc.xref.Part1.16"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a></td>
     1590                  <td class="left"><a href="p1-messaging.html#header.host" title="Host">Section 5.4</a> of <a href="#Part1" id="rfc.xref.Part1.15"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a></td>
    15921591               </tr>
    15931592               <tr>
    … …  
    20012000               <tr>
    20022001                  <td class="left">TE</td>
    2003                   <td class="left"><a href="p1-messaging.html#header.te" title="TE">Section 4.3</a> of <a href="#Part1" id="rfc.xref.Part1.17"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a></td>
     2002                  <td class="left"><a href="p1-messaging.html#header.te" title="TE">Section 4.3</a> of <a href="#Part1" id="rfc.xref.Part1.16"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a></td>
    20042003               </tr>
    20052004               <tr>
    … …  
    20552054         user agent limitations.
    20562055      </p>
    2057       <p id="rfc.section.6.5.3.p.3">The field can contain multiple product tokens (<a href="#product.tokens" title="Product Tokens">Section&nbsp;9.2</a>) and comments (<a href="p1-messaging.html#header.fields" title="Header Fields">Section 3.2</a> of <a href="#Part1" id="rfc.xref.Part1.18"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>) identifying the agent and its significant subproducts. By convention, the product tokens are listed in order of their significance
     2056      <p id="rfc.section.6.5.3.p.3">The field can contain multiple product tokens (<a href="#product.tokens" title="Product Tokens">Section&nbsp;9.2</a>) and comments (<a href="p1-messaging.html#header.fields" title="Header Fields">Section 3.2</a> of <a href="#Part1" id="rfc.xref.Part1.17"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>) identifying the agent and its significant subproducts. By convention, the product tokens are listed in order of their significance
    20582057         for identifying the application.
    20592058      </p>
    … …  
    23392338      <div id="rfc.iref.55"></div>
    23402339      <h3 id="rfc.section.7.2.2"><a href="#rfc.section.7.2.2">7.2.2</a>&nbsp;<a id="status.101" href="#status.101">101 Switching Protocols</a></h3>
    2341       <p id="rfc.section.7.2.2.p.1">The server understands and is willing to comply with the client's request, via the <a href="p1-messaging.html#header.upgrade" class="smpl">Upgrade</a> message header field (<a href="p1-messaging.html#header.upgrade" title="Upgrade">Section 6.3</a> of <a href="#Part1" id="rfc.xref.Part1.19"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>), for a change in the application protocol being used on this connection. The server will switch protocols to those defined
     2340      <p id="rfc.section.7.2.2.p.1">The server understands and is willing to comply with the client's request, via the <a href="p1-messaging.html#header.upgrade" class="smpl">Upgrade</a> message header field (<a href="p1-messaging.html#header.upgrade" title="Upgrade">Section 6.3</a> of <a href="#Part1" id="rfc.xref.Part1.18"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>), for a change in the application protocol being used on this connection. The server will switch protocols to those defined
    23422341         by the response's Upgrade header field immediately after the empty line which terminates the 101 response.
    23432342      </p>
    … …  
    23902389      <div id="rfc.iref.56"></div>
    23912390      <h3 id="rfc.section.7.3.4"><a href="#rfc.section.7.3.4">7.3.4</a>&nbsp;<a id="status.203" href="#status.203">203 Non-Authoritative Information</a></h3>
    2392       <p id="rfc.section.7.3.4.p.1">The representation in the response has been transformed or otherwise modified by a transforming proxy (<a href="p1-messaging.html#intermediaries" title="Intermediaries">Section 2.3</a> of <a href="#Part1" id="rfc.xref.Part1.20"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>). Note that the behavior of transforming intermediaries is controlled by the no-transform Cache-Control directive (<a href="p6-cache.html#header.cache-control" title="Cache-Control">Section 7.2</a> of <a href="#Part6" id="rfc.xref.Part6.9"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Caching">[Part6]</cite></a>).
     2391      <p id="rfc.section.7.3.4.p.1">The representation in the response has been transformed or otherwise modified by a transforming proxy (<a href="p1-messaging.html#intermediaries" title="Intermediaries">Section 2.3</a> of <a href="#Part1" id="rfc.xref.Part1.19"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>). Note that the behavior of transforming intermediaries is controlled by the no-transform Cache-Control directive (<a href="p6-cache.html#header.cache-control" title="Cache-Control">Section 7.2</a> of <a href="#Part6" id="rfc.xref.Part6.9"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Caching">[Part6]</cite></a>).
    23932392      </p>
    23942393      <p id="rfc.section.7.3.4.p.2">This status code is only appropriate when the response status code would have been <a href="#status.200" class="smpl">200 (OK)</a> otherwise. When the status code before transformation would have been different, the 214 Transformation Applied warn-code
    … …  
    24232422         another input action.
    24242423      </p>
    2425       <p id="rfc.section.7.3.6.p.2">The message body included with the response <em class="bcp14">MUST</em> be empty. Note that receivers still need to parse the response according to the algorithm defined in <a href="p1-messaging.html#message.body" title="Message Body">Section 3.3</a> of <a href="#Part1" id="rfc.xref.Part1.21"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>.
     2424      <p id="rfc.section.7.3.6.p.2">The message body included with the response <em class="bcp14">MUST</em> be empty. Note that receivers still need to parse the response according to the algorithm defined in <a href="p1-messaging.html#message.body" title="Message Body">Section 3.3</a> of <a href="#Part1" id="rfc.xref.Part1.20"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>.
    24262425      </p>
    24272426      <h2 id="rfc.section.7.4"><a href="#rfc.section.7.4">7.4</a>&nbsp;<a id="status.3xx" href="#status.3xx">Redirection 3xx</a></h2>
    … …  
    26602659      <div id="rfc.iref.58"></div>
    26612660      <h3 id="rfc.section.7.5.15"><a href="#rfc.section.7.5.15">7.5.15</a>&nbsp;<a id="status.426" href="#status.426">426 Upgrade Required</a></h3>
    2662       <p id="rfc.section.7.5.15.p.1">The request can not be completed without a prior protocol upgrade. This response <em class="bcp14">MUST</em> include an <a href="p1-messaging.html#header.upgrade" class="smpl">Upgrade</a> header field (<a href="p1-messaging.html#header.upgrade" title="Upgrade">Section 6.3</a> of <a href="#Part1" id="rfc.xref.Part1.22"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>) specifying the required protocols.
     2661      <p id="rfc.section.7.5.15.p.1">The request can not be completed without a prior protocol upgrade. This response <em class="bcp14">MUST</em> include an <a href="p1-messaging.html#header.upgrade" class="smpl">Upgrade</a> header field (<a href="p1-messaging.html#header.upgrade" title="Upgrade">Section 6.3</a> of <a href="#Part1" id="rfc.xref.Part1.21"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>) specifying the required protocols.
    26632662      </p>
    26642663      <div id="rfc.figure.u.33"></div>
    … …  
    27192718      <p id="rfc.section.7.6.6.p.1">The server does not support, or refuses to support, the protocol version that was used in the request message. The server
    27202719         is indicating that it is unable or unwilling to complete the request using the same major version as the client, as described
    2721          in <a href="p1-messaging.html#http.version" title="Protocol Versioning">Section 2.6</a> of <a href="#Part1" id="rfc.xref.Part1.23"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>, other than with this error message. The response <em class="bcp14">SHOULD</em> contain a representation describing why that version is not supported and what other protocols are supported by that server.
     2720         in <a href="p1-messaging.html#http.version" title="Protocol Versioning">Section 2.6</a> of <a href="#Part1" id="rfc.xref.Part1.22"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>, other than with this error message. The response <em class="bcp14">SHOULD</em> contain a representation describing why that version is not supported and what other protocols are supported by that server.
    27222721      </p>
    27232722      <h1 id="rfc.section.8"><a href="#rfc.section.8">8.</a>&nbsp;<a id="response.header.fields" href="#response.header.fields">Response Header Fields</a></h1>
    27242723      <p id="rfc.section.8.p.1">The response header fields allow the server to pass additional information about the response which cannot be placed in the
    2725          status-line. These header fields give information about the server and about further access to the target resource (<a href="p1-messaging.html#effective.request.uri" title="Effective Request URI">Section 5.5</a> of <a href="#Part1" id="rfc.xref.Part1.24"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>).
     2724         status-line. These header fields give information about the server and about further access to the target resource (<a href="p1-messaging.html#effective.request.uri" title="Effective Request URI">Section 5.5</a> of <a href="#Part1" id="rfc.xref.Part1.23"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>).
    27262725      </p>
    27272726      <h2 id="rfc.section.8.1"><a href="#rfc.section.8.1">8.1</a>&nbsp;<a id="response.control.data" href="#response.control.data">Control Data</a></h2>
    … …  
    29342933      <h3 id="rfc.section.8.4.2"><a href="#rfc.section.8.4.2">8.4.2</a>&nbsp;<a id="header.server" href="#header.server">Server</a></h3>
    29352934      <p id="rfc.section.8.4.2.p.1">The "Server" header field contains information about the software used by the origin server to handle the request.</p>
    2936       <p id="rfc.section.8.4.2.p.2">The field can contain multiple product tokens (<a href="#product.tokens" title="Product Tokens">Section&nbsp;9.2</a>) and comments (<a href="p1-messaging.html#header.fields" title="Header Fields">Section 3.2</a> of <a href="#Part1" id="rfc.xref.Part1.25"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>) identifying the server and any significant subproducts. The product tokens are listed in order of their significance for
     2935      <p id="rfc.section.8.4.2.p.2">The field can contain multiple product tokens (<a href="#product.tokens" title="Product Tokens">Section&nbsp;9.2</a>) and comments (<a href="p1-messaging.html#header.fields" title="Header Fields">Section 3.2</a> of <a href="#Part1" id="rfc.xref.Part1.24"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>) identifying the server and any significant subproducts. The product tokens are listed in order of their significance for
    29372936         identifying the application.
    29382937      </p>
    … …  
    29402939</pre><p id="rfc.section.8.4.2.p.4">Example:</p>
    29412940      <div id="rfc.figure.u.46"></div><pre class="text">  Server: CERN/3.0 libwww/2.17
    2942 </pre><p id="rfc.section.8.4.2.p.6">If the response is being forwarded through a proxy, the proxy application <em class="bcp14">MUST NOT</em> modify the <a href="#header.server" class="smpl">Server</a> header field. Instead, it <em class="bcp14">MUST</em> include a <a href="p1-messaging.html#header.via" class="smpl">Via</a> field (as described in <a href="p1-messaging.html#header.via" title="Via">Section 5.7</a> of <a href="#Part1" id="rfc.xref.Part1.26"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>).
     2941</pre><p id="rfc.section.8.4.2.p.6">If the response is being forwarded through a proxy, the proxy application <em class="bcp14">MUST NOT</em> modify the <a href="#header.server" class="smpl">Server</a> header field. Instead, it <em class="bcp14">MUST</em> include a <a href="p1-messaging.html#header.via" class="smpl">Via</a> field (as described in <a href="p1-messaging.html#header.via" title="Via">Section 5.7</a> of <a href="#Part1" id="rfc.xref.Part1.25"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>).
    29432942      </p>
    29442943      <div class="note" id="rfc.section.8.4.2.p.7">
    … …  
    30753074      </p>
    30763075      <ul class="empty">
    3077          <li>See <a href="p1-messaging.html#compress.coding" title="Compress Coding">Section 4.2.1</a> of <a href="#Part1" id="rfc.xref.Part1.27"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>.
     3076         <li>See <a href="p1-messaging.html#compress.coding" title="Compress Coding">Section 4.2.1</a> of <a href="#Part1" id="rfc.xref.Part1.26"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>.
    30783077         </li>
    30793078      </ul>
    … …  
    30813080      </p>
    30823081      <ul class="empty">
    3083          <li>See <a href="p1-messaging.html#deflate.coding" title="Deflate Coding">Section 4.2.2</a> of <a href="#Part1" id="rfc.xref.Part1.28"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>.
     3082         <li>See <a href="p1-messaging.html#deflate.coding" title="Deflate Coding">Section 4.2.2</a> of <a href="#Part1" id="rfc.xref.Part1.27"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>.
    30843083         </li>
    30853084      </ul>
    … …  
    30873086      </p>
    30883087      <ul class="empty">
    3089          <li>See <a href="p1-messaging.html#gzip.coding" title="Gzip Coding">Section 4.2.3</a> of <a href="#Part1" id="rfc.xref.Part1.29"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>.
     3088         <li>See <a href="p1-messaging.html#gzip.coding" title="Gzip Coding">Section 4.2.3</a> of <a href="#Part1" id="rfc.xref.Part1.28"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>.
    30903089         </li>
    30913090      </ul>
    … …  
    31783177         specific to a single application or data format, since orthogonal technologies deserve orthogonal specification.
    31793178      </p>
    3180       <p id="rfc.section.10.1.2.p.2">Since HTTP message parsing (<a href="p1-messaging.html#message.body" title="Message Body">Section 3.3</a> of <a href="#Part1" id="rfc.xref.Part1.30"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>) is independent of method semantics (aside from responses to HEAD), definitions of new HTTP methods cannot change the parsing
     3179      <p id="rfc.section.10.1.2.p.2">Since HTTP message parsing (<a href="p1-messaging.html#message.body" title="Message Body">Section 3.3</a> of <a href="#Part1" id="rfc.xref.Part1.29"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>) is independent of method semantics (aside from responses to HEAD), definitions of new HTTP methods cannot change the parsing
    31813180         algorithm or prohibit the presence of a message body on either the request or the response message. Definitions of new methods
    31823181         can specify that only zero-length bodies are allowed, which would imply that each such messages would be required to contain
    … …  
    35223521      <h3 id="rfc.section.10.3.1"><a href="#rfc.section.10.3.1">10.3.1</a>&nbsp;<a id="considerations.for.new.header.fields" href="#considerations.for.new.header.fields">Considerations for New Header Fields</a></h3>
    35233522      <p id="rfc.section.10.3.1.p.1">Header fields are key:value pairs that can be used to communicate data about the message, its payload, the target resource,
    3524          or the connection (i.e., control data). See <a href="p1-messaging.html#header.fields" title="Header Fields">Section 3.2</a> of <a href="#Part1" id="rfc.xref.Part1.31"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a> for a general definition of header field syntax in HTTP messages.
     3523         or the connection (i.e., control data). See <a href="p1-messaging.html#header.fields" title="Header Fields">Section 3.2</a> of <a href="#Part1" id="rfc.xref.Part1.30"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a> for a general definition of header field syntax in HTTP messages.
    35253524      </p>
    35263525      <p id="rfc.section.10.3.1.p.2">The requirements for header field names are defined in <a href="http://tools.ietf.org/html/rfc3864#section-4.1">Section 4.1</a> of <a href="#RFC3864" id="rfc.xref.RFC3864.2"><cite title="Registration Procedures for Message Header Fields">[RFC3864]</cite></a>. Authors of specifications defining new fields are advised to keep the name as short as practical, and not to prefix them
    35273526         with "X-" if they are to be registered (either immediately or in the future).
    35283527      </p>
    3529       <p id="rfc.section.10.3.1.p.3">New header field values typically have their syntax defined using ABNF (<a href="#RFC5234" id="rfc.xref.RFC5234.2"><cite title="Augmented BNF for Syntax Specifications: ABNF">[RFC5234]</cite></a>), using the extension defined in <a href="p1-messaging.html#abnf.extension" title="ABNF list extension: #rule">Appendix B</a> of <a href="#Part1" id="rfc.xref.Part1.32"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a> as necessary, and are usually constrained to the range of ASCII characters. Header fields needing a greater range of characters
     3528      <p id="rfc.section.10.3.1.p.3">New header field values typically have their syntax defined using ABNF (<a href="#RFC5234" id="rfc.xref.RFC5234.2"><cite title="Augmented BNF for Syntax Specifications: ABNF">[RFC5234]</cite></a>), using the extension defined in <a href="p1-messaging.html#abnf.extension" title="ABNF list extension: #rule">Appendix B</a> of <a href="#Part1" id="rfc.xref.Part1.31"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a> as necessary, and are usually constrained to the range of ASCII characters. Header fields needing a greater range of characters
    35303529         can use an encoding such as the one defined in <a href="#RFC5987" id="rfc.xref.RFC5987.1"><cite title="Character Set and Language Encoding for Hypertext Transfer Protocol (HTTP) Header Field Parameters">[RFC5987]</cite></a>.
    35313530      </p>
    35323531      <p id="rfc.section.10.3.1.p.4">Because commas (",") are used as a generic delimiter between field-values, they need to be treated with care if they are allowed
    35333532         in the field-value's payload. Typically, components that might contain a comma are protected with double-quotes using the
    3534          quoted-string ABNF production (<a href="p1-messaging.html#field.components" title="Field value components">Section 3.2.4</a> of <a href="#Part1" id="rfc.xref.Part1.33"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>).
     3533         quoted-string ABNF production (<a href="p1-messaging.html#field.components" title="Field value components">Section 3.2.4</a> of <a href="#Part1" id="rfc.xref.Part1.32"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>).
    35353534      </p>
    35363535      <p id="rfc.section.10.3.1.p.5">For example, a textual date and a URI (either of which might contain a comma) could be safely carried in field-values like
    … …  
    35503549      <ul>
    35513550         <li>
    3552             <p>Whether the field is a single value, or whether it can be a list (delimited by commas; see <a href="p1-messaging.html#header.fields" title="Header Fields">Section 3.2</a> of <a href="#Part1" id="rfc.xref.Part1.34"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>).
     3551            <p>Whether the field is a single value, or whether it can be a list (delimited by commas; see <a href="p1-messaging.html#header.fields" title="Header Fields">Section 3.2</a> of <a href="#Part1" id="rfc.xref.Part1.33"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>).
    35533552            </p>
    35543553            <p>If it does not use the list syntax, document how to treat messages where the header field occurs multiple times (a sensible
    … …  
    35663565         </li>
    35673566         <li>
    3568             <p>Whether it is appropriate to list the field-name in the <a href="p1-messaging.html#header.connection" class="smpl">Connection</a> header field (i.e., if the header field is to be hop-by-hop, see <a href="p1-messaging.html#header.connection" title="Connection">Section 6.1</a> of <a href="#Part1" id="rfc.xref.Part1.35"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>).
     3567            <p>Whether it is appropriate to list the field-name in the <a href="p1-messaging.html#header.connection" class="smpl">Connection</a> header field (i.e., if the header field is to be hop-by-hop, see <a href="p1-messaging.html#header.connection" title="Connection">Section 6.1</a> of <a href="#Part1" id="rfc.xref.Part1.34"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>).
    35693568            </p>
    35703569         </li>
    … …  
    35773576         </li>
    35783577         <li>
    3579             <p>Whether the header field is useful or allowable in trailers (see <a href="p1-messaging.html#chunked.encoding" title="Chunked Transfer Coding">Section 4.1</a> of <a href="#Part1" id="rfc.xref.Part1.36"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>).
     3578            <p>Whether the header field is useful or allowable in trailers (see <a href="p1-messaging.html#chunked.encoding" title="Chunked Transfer Coding">Section 4.1</a> of <a href="#Part1" id="rfc.xref.Part1.35"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>).
    35803579            </p>
    35813580         </li>
    … …  
    37433742      <p id="rfc.section.10.3.2.p.2">The change controller for the above registrations is: "IETF (iesg@ietf.org) - Internet Engineering Task Force".</p>
    37443743      <h2 id="rfc.section.10.4"><a href="#rfc.section.10.4">10.4</a>&nbsp;<a id="content.coding.registry" href="#content.coding.registry">Content Coding Registry</a></h2>
    3745       <p id="rfc.section.10.4.p.1">The HTTP Content Coding Registry defines the name space for content coding names (<a href="p1-messaging.html#compression.codings" title="Compression Codings">Section 4.2</a> of <a href="#Part1" id="rfc.xref.Part1.37"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>). The content coding registry is maintained at &lt;<a href="http://www.iana.org/assignments/http-parameters">http://www.iana.org/assignments/http-parameters</a>&gt;.
     3744      <p id="rfc.section.10.4.p.1">The HTTP Content Coding Registry defines the name space for content coding names (<a href="p1-messaging.html#compression.codings" title="Compression Codings">Section 4.2</a> of <a href="#Part1" id="rfc.xref.Part1.36"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>). The content coding registry is maintained at &lt;<a href="http://www.iana.org/assignments/http-parameters">http://www.iana.org/assignments/http-parameters</a>&gt;.
    37463745      </p>
    37473746      <h3 id="rfc.section.10.4.1"><a href="#rfc.section.10.4.1">10.4.1</a>&nbsp;<a id="content.coding.procedure" href="#content.coding.procedure">Procedure</a></h3>
    … …  
    37533752         <li>Pointer to specification text</li>
    37543753      </ul>
    3755       <p id="rfc.section.10.4.1.p.2">Names of content codings <em class="bcp14">MUST NOT</em> overlap with names of transfer codings (<a href="p1-messaging.html#transfer.codings" title="Transfer Codings">Section 4</a> of <a href="#Part1" id="rfc.xref.Part1.38"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>), unless the encoding transformation is identical (as is the case for the compression codings defined in <a href="p1-messaging.html#compression.codings" title="Compression Codings">Section 4.2</a> of <a href="#Part1" id="rfc.xref.Part1.39"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>).
     3754      <p id="rfc.section.10.4.1.p.2">Names of content codings <em class="bcp14">MUST NOT</em> overlap with names of transfer codings (<a href="p1-messaging.html#transfer.codings" title="Transfer Codings">Section 4</a> of <a href="#Part1" id="rfc.xref.Part1.37"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>), unless the encoding transformation is identical (as is the case for the compression codings defined in <a href="p1-messaging.html#compression.codings" title="Compression Codings">Section 4.2</a> of <a href="#Part1" id="rfc.xref.Part1.38"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>).
    37563755      </p>
    37573756      <p id="rfc.section.10.4.1.p.3">Values to be added to this name space require IETF Review (see <a href="http://tools.ietf.org/html/rfc5226#section-4.1">Section 4.1</a> of <a href="#RFC5226" id="rfc.xref.RFC5226.3"><cite title="Guidelines for Writing an IANA Considerations Section in RFCs">[RFC5226]</cite></a>), and <em class="bcp14">MUST</em> conform to the purpose of content coding defined in this section.
    … …  
    37733772                  <td class="left">compress</td>
    37743773                  <td class="left">UNIX "compress" program method</td>
    3775                   <td class="left"> <a href="p1-messaging.html#compress.coding" title="Compress Coding">Section 4.2.1</a> of <a href="#Part1" id="rfc.xref.Part1.40"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>
     3774                  <td class="left"> <a href="p1-messaging.html#compress.coding" title="Compress Coding">Section 4.2.1</a> of <a href="#Part1" id="rfc.xref.Part1.39"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>
    37763775                  </td>
    37773776               </tr>
    … …  
    37803779                  <td class="left">"deflate" compression mechanism (<a href="#RFC1951" id="rfc.xref.RFC1951.1"><cite title="DEFLATE Compressed Data Format Specification version 1.3">[RFC1951]</cite></a>) used inside the "zlib" data format (<a href="#RFC1950" id="rfc.xref.RFC1950.1"><cite title="ZLIB Compressed Data Format Specification version 3.3">[RFC1950]</cite></a>)
    37813780                  </td>
    3782                   <td class="left"> <a href="p1-messaging.html#deflate.coding" title="Deflate Coding">Section 4.2.2</a> of <a href="#Part1" id="rfc.xref.Part1.41"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>
     3781                  <td class="left"> <a href="p1-messaging.html#deflate.coding" title="Deflate Coding">Section 4.2.2</a> of <a href="#Part1" id="rfc.xref.Part1.40"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>
    37833782                  </td>
    37843783               </tr>
    … …  
    37863785                  <td class="left">gzip</td>
    37873786                  <td class="left">Same as GNU zip <a href="#RFC1952" id="rfc.xref.RFC1952.1"><cite title="GZIP file format specification version 4.3">[RFC1952]</cite></a></td>
    3788                   <td class="left"> <a href="p1-messaging.html#gzip.coding" title="Gzip Coding">Section 4.2.3</a> of <a href="#Part1" id="rfc.xref.Part1.42"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>
     3787                  <td class="left"> <a href="p1-messaging.html#gzip.coding" title="Gzip Coding">Section 4.2.3</a> of <a href="#Part1" id="rfc.xref.Part1.41"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>
    37893788                  </td>
    37903789               </tr>
    … …  
    38783877      </p>
    38793878      <h1 id="rfc.section.12"><a href="#rfc.section.12">12.</a>&nbsp;<a id="acks" href="#acks">Acknowledgments</a></h1>
    3880       <p id="rfc.section.12.p.1">See <a href="p1-messaging.html#acks" title="Acknowledgments">Section 9</a> of <a href="#Part1" id="rfc.xref.Part1.43"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>.
     3879      <p id="rfc.section.12.p.1">See <a href="p1-messaging.html#acks" title="Acknowledgments">Section 9</a> of <a href="#Part1" id="rfc.xref.Part1.42"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>.
    38813880      </p>
    38823881      <h1 id="rfc.references"><a id="rfc.section.13" href="#rfc.section.13">13.</a> References
    … …  
    41894188      </p>
    41904189      <p id="rfc.section.C.p.16">In the description of the "<a href="#header.server" class="smpl">Server</a>" header field, the "<a href="p1-messaging.html#header.via" class="smpl">Via</a>" field was described as a SHOULD. The requirement was and is stated correctly in the description of the Via header field
    4191          in <a href="p1-messaging.html#header.via" title="Via">Section 5.7</a> of <a href="#Part1" id="rfc.xref.Part1.44"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>. (<a href="#header.server" id="rfc.xref.header.server.4" title="Server">Section&nbsp;8.4.2</a>)
     4190         in <a href="p1-messaging.html#header.via" title="Via">Section 5.7</a> of <a href="#Part1" id="rfc.xref.Part1.43"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>. (<a href="#header.server" id="rfc.xref.header.server.4" title="Server">Section&nbsp;8.4.2</a>)
    41924191      </p>
    41934192      <p id="rfc.section.C.p.17">Clarify contexts that charset is used in. (<a href="#character.sets" title="Character Encodings (charset)">Section&nbsp;9.3</a>)
    … …  
    42144213         (any visible US-ASCII character).
    42154214      </p>
    4216       <p id="rfc.section.D.p.2">The rules below are defined in <a href="#Part1" id="rfc.xref.Part1.45"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>:
    4217       </p>
    4218       <div id="rfc.figure.u.64"></div><pre class="inline">  <a href="#imported.abnf" class="smpl">BWS</a>           = &lt;BWS, defined in <a href="#Part1" id="rfc.xref.Part1.46"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>, <a href="p1-messaging.html#whitespace" title="Whitespace">Section 3.2.1</a>&gt;
    4219   <a href="#imported.abnf" class="smpl">OWS</a>           = &lt;OWS, defined in <a href="#Part1" id="rfc.xref.Part1.47"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>, <a href="p1-messaging.html#whitespace" title="Whitespace">Section 3.2.1</a>&gt;
    4220   <a href="#imported.abnf" class="smpl">RWS</a>           = &lt;RWS, defined in <a href="#Part1" id="rfc.xref.Part1.48"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>, <a href="p1-messaging.html#whitespace" title="Whitespace">Section 3.2.1</a>&gt;
    4221   <a href="#imported.abnf" class="smpl">URI-reference</a> = &lt;URI-reference, defined in <a href="#Part1" id="rfc.xref.Part1.49"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>, <a href="p1-messaging.html#uri" title="Uniform Resource Identifiers">Section 2.7</a>&gt;
    4222   <a href="#imported.abnf" class="smpl">absolute-URI</a>  = &lt;absolute-URI, defined in <a href="#Part1" id="rfc.xref.Part1.50"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>, <a href="p1-messaging.html#uri" title="Uniform Resource Identifiers">Section 2.7</a>&gt;
    4223   <a href="#imported.abnf" class="smpl">comment</a>       = &lt;comment, defined in <a href="#Part1" id="rfc.xref.Part1.51"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>, <a href="p1-messaging.html#field.components" title="Field value components">Section 3.2.4</a>&gt;
    4224   <a href="#imported.abnf" class="smpl">field-name</a>    = &lt;comment, defined in <a href="#Part1" id="rfc.xref.Part1.52"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>, <a href="p1-messaging.html#header.fields" title="Header Fields">Section 3.2</a>&gt;
    4225   <a href="#imported.abnf" class="smpl">partial-URI</a>   = &lt;partial-URI, defined in <a href="#Part1" id="rfc.xref.Part1.53"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>, <a href="p1-messaging.html#uri" title="Uniform Resource Identifiers">Section 2.7</a>&gt;
    4226   <a href="#imported.abnf" class="smpl">quoted-string</a> = &lt;quoted-string, defined in <a href="#Part1" id="rfc.xref.Part1.54"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>, <a href="p1-messaging.html#field.components" title="Field value components">Section 3.2.4</a>&gt;
    4227   <a href="#imported.abnf" class="smpl">token</a>         = &lt;token, defined in <a href="#Part1" id="rfc.xref.Part1.55"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>, <a href="p1-messaging.html#field.components" title="Field value components">Section 3.2.4</a>&gt;
    4228   <a href="#imported.abnf" class="smpl">word</a>          = &lt;word, defined in <a href="#Part1" id="rfc.xref.Part1.56"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>, <a href="p1-messaging.html#field.components" title="Field value components">Section 3.2.4</a>&gt;
     4215      <p id="rfc.section.D.p.2">The rules below are defined in <a href="#Part1" id="rfc.xref.Part1.44"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>:
     4216      </p>
     4217      <div id="rfc.figure.u.64"></div><pre class="inline">  <a href="#imported.abnf" class="smpl">BWS</a>           = &lt;BWS, defined in <a href="#Part1" id="rfc.xref.Part1.45"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>, <a href="p1-messaging.html#whitespace" title="Whitespace">Section 3.2.1</a>&gt;
     4218  <a href="#imported.abnf" class="smpl">OWS</a>           = &lt;OWS, defined in <a href="#Part1" id="rfc.xref.Part1.46"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>, <a href="p1-messaging.html#whitespace" title="Whitespace">Section 3.2.1</a>&gt;
     4219  <a href="#imported.abnf" class="smpl">RWS</a>           = &lt;RWS, defined in <a href="#Part1" id="rfc.xref.Part1.47"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>, <a href="p1-messaging.html#whitespace" title="Whitespace">Section 3.2.1</a>&gt;
     4220  <a href="#imported.abnf" class="smpl">URI-reference</a> = &lt;URI-reference, defined in <a href="#Part1" id="rfc.xref.Part1.48"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>, <a href="p1-messaging.html#uri" title="Uniform Resource Identifiers">Section 2.7</a>&gt;
     4221  <a href="#imported.abnf" class="smpl">absolute-URI</a>  = &lt;absolute-URI, defined in <a href="#Part1" id="rfc.xref.Part1.49"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>, <a href="p1-messaging.html#uri" title="Uniform Resource Identifiers">Section 2.7</a>&gt;
     4222  <a href="#imported.abnf" class="smpl">comment</a>       = &lt;comment, defined in <a href="#Part1" id="rfc.xref.Part1.50"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>, <a href="p1-messaging.html#field.components" title="Field value components">Section 3.2.4</a>&gt;
     4223  <a href="#imported.abnf" class="smpl">field-name</a>    = &lt;comment, defined in <a href="#Part1" id="rfc.xref.Part1.51"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>, <a href="p1-messaging.html#header.fields" title="Header Fields">Section 3.2</a>&gt;
     4224  <a href="#imported.abnf" class="smpl">partial-URI</a>   = &lt;partial-URI, defined in <a href="#Part1" id="rfc.xref.Part1.52"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>, <a href="p1-messaging.html#uri" title="Uniform Resource Identifiers">Section 2.7</a>&gt;
     4225  <a href="#imported.abnf" class="smpl">quoted-string</a> = &lt;quoted-string, defined in <a href="#Part1" id="rfc.xref.Part1.53"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>, <a href="p1-messaging.html#field.components" title="Field value components">Section 3.2.4</a>&gt;
     4226  <a href="#imported.abnf" class="smpl">token</a>         = &lt;token, defined in <a href="#Part1" id="rfc.xref.Part1.54"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>, <a href="p1-messaging.html#field.components" title="Field value components">Section 3.2.4</a>&gt;
     4227  <a href="#imported.abnf" class="smpl">word</a>          = &lt;word, defined in <a href="#Part1" id="rfc.xref.Part1.55"><cite title="Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing">[Part1]</cite></a>, <a href="p1-messaging.html#field.components" title="Field value components">Section 3.2.4</a>&gt;
    42294228</pre><h1 id="rfc.section.E"><a href="#rfc.section.E">E.</a>&nbsp;<a id="collected.abnf" href="#collected.abnf">Collected ABNF</a></h1>
    42304229      <div id="rfc.figure.u.65"></div> <pre class="inline"><a href="#header.accept" class="smpl">Accept</a> = [ ( "," / ( media-range [ accept-params ] ) ) *( OWS "," [
    … …  
    51485147            </li>
    51495148            <li><a id="rfc.index.P" href="#rfc.index.P"><b>P</b></a><ul>
    5150                   <li><em>Part1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.1">1</a>, <a href="#rfc.xref.Part1.2">1.1</a>, <a href="#rfc.xref.Part1.3">1.2</a>, <a href="#rfc.xref.Part1.4">2</a>, <a href="#rfc.xref.Part1.5">2</a>, <a href="#rfc.xref.Part1.6">2</a>, <a href="#rfc.xref.Part1.7">3</a>, <a href="#rfc.xref.Part1.8">3.1</a>, <a href="#rfc.xref.Part1.9">3.2.4</a>, <a href="#rfc.xref.Part1.10">4.1</a>, <a href="#rfc.xref.Part1.11">4.2</a>, <a href="#rfc.xref.Part1.12">5.3.6</a>, <a href="#rfc.xref.Part1.13">5.3.7</a>, <a href="#rfc.xref.Part1.14">5.3.8</a>, <a href="#rfc.xref.Part1.15">5.3.8</a>, <a href="#rfc.xref.Part1.16">6.1</a>, <a href="#rfc.xref.Part1.17">6.5</a>, <a href="#rfc.xref.Part1.18">6.5.3</a>, <a href="#rfc.xref.Part1.19">7.2.2</a>, <a href="#rfc.xref.Part1.20">7.3.4</a>, <a href="#rfc.xref.Part1.21">7.3.6</a>, <a href="#rfc.xref.Part1.22">7.5.15</a>, <a href="#rfc.xref.Part1.23">7.6.6</a>, <a href="#rfc.xref.Part1.24">8</a>, <a href="#rfc.xref.Part1.25">8.4.2</a>, <a href="#rfc.xref.Part1.26">8.4.2</a>, <a href="#rfc.xref.Part1.27">9.4</a>, <a href="#rfc.xref.Part1.28">9.4</a>, <a href="#rfc.xref.Part1.29">9.4</a>, <a href="#rfc.xref.Part1.30">10.1.2</a>, <a href="#rfc.xref.Part1.31">10.3.1</a>, <a href="#rfc.xref.Part1.32">10.3.1</a>, <a href="#rfc.xref.Part1.33">10.3.1</a>, <a href="#rfc.xref.Part1.34">10.3.1</a>, <a href="#rfc.xref.Part1.35">10.3.1</a>, <a href="#rfc.xref.Part1.36">10.3.1</a>, <a href="#rfc.xref.Part1.37">10.4</a>, <a href="#rfc.xref.Part1.38">10.4.1</a>, <a href="#rfc.xref.Part1.39">10.4.1</a>, <a href="#rfc.xref.Part1.40">10.4.2</a>, <a href="#rfc.xref.Part1.41">10.4.2</a>, <a href="#rfc.xref.Part1.42">10.4.2</a>, <a href="#rfc.xref.Part1.43">12</a>, <a href="#Part1"><b>13.1</b></a>, <a href="#rfc.xref.Part1.44">C</a>, <a href="#rfc.xref.Part1.45">D</a>, <a href="#rfc.xref.Part1.46">D</a>, <a href="#rfc.xref.Part1.47">D</a>, <a href="#rfc.xref.Part1.48">D</a>, <a href="#rfc.xref.Part1.49">D</a>, <a href="#rfc.xref.Part1.50">D</a>, <a href="#rfc.xref.Part1.51">D</a>, <a href="#rfc.xref.Part1.52">D</a>, <a href="#rfc.xref.Part1.53">D</a>, <a href="#rfc.xref.Part1.54">D</a>, <a href="#rfc.xref.Part1.55">D</a>, <a href="#rfc.xref.Part1.56">D</a><ul>
     5149                  <li><em>Part1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.1">1</a>, <a href="#rfc.xref.Part1.2">1.1</a>, <a href="#rfc.xref.Part1.3">1.2</a>, <a href="#rfc.xref.Part1.4">2</a>, <a href="#rfc.xref.Part1.5">2</a>, <a href="#rfc.xref.Part1.6">2</a>, <a href="#rfc.xref.Part1.7">3.1</a>, <a href="#rfc.xref.Part1.8">3.2.4</a>, <a href="#rfc.xref.Part1.9">4.1</a>, <a href="#rfc.xref.Part1.10">4.2</a>, <a href="#rfc.xref.Part1.11">5.3.6</a>, <a href="#rfc.xref.Part1.12">5.3.7</a>, <a href="#rfc.xref.Part1.13">5.3.8</a>, <a href="#rfc.xref.Part1.14">5.3.8</a>, <a href="#rfc.xref.Part1.15">6.1</a>, <a href="#rfc.xref.Part1.16">6.5</a>, <a href="#rfc.xref.Part1.17">6.5.3</a>, <a href="#rfc.xref.Part1.18">7.2.2</a>, <a href="#rfc.xref.Part1.19">7.3.4</a>, <a href="#rfc.xref.Part1.20">7.3.6</a>, <a href="#rfc.xref.Part1.21">7.5.15</a>, <a href="#rfc.xref.Part1.22">7.6.6</a>, <a href="#rfc.xref.Part1.23">8</a>, <a href="#rfc.xref.Part1.24">8.4.2</a>, <a href="#rfc.xref.Part1.25">8.4.2</a>, <a href="#rfc.xref.Part1.26">9.4</a>, <a href="#rfc.xref.Part1.27">9.4</a>, <a href="#rfc.xref.Part1.28">9.4</a>, <a href="#rfc.xref.Part1.29">10.1.2</a>, <a href="#rfc.xref.Part1.30">10.3.1</a>, <a href="#rfc.xref.Part1.31">10.3.1</a>, <a href="#rfc.xref.Part1.32">10.3.1</a>, <a href="#rfc.xref.Part1.33">10.3.1</a>, <a href="#rfc.xref.Part1.34">10.3.1</a>, <a href="#rfc.xref.Part1.35">10.3.1</a>, <a href="#rfc.xref.Part1.36">10.4</a>, <a href="#rfc.xref.Part1.37">10.4.1</a>, <a href="#rfc.xref.Part1.38">10.4.1</a>, <a href="#rfc.xref.Part1.39">10.4.2</a>, <a href="#rfc.xref.Part1.40">10.4.2</a>, <a href="#rfc.xref.Part1.41">10.4.2</a>, <a href="#rfc.xref.Part1.42">12</a>, <a href="#Part1"><b>13.1</b></a>, <a href="#rfc.xref.Part1.43">C</a>, <a href="#rfc.xref.Part1.44">D</a>, <a href="#rfc.xref.Part1.45">D</a>, <a href="#rfc.xref.Part1.46">D</a>, <a href="#rfc.xref.Part1.47">D</a>, <a href="#rfc.xref.Part1.48">D</a>, <a href="#rfc.xref.Part1.49">D</a>, <a href="#rfc.xref.Part1.50">D</a>, <a href="#rfc.xref.Part1.51">D</a>, <a href="#rfc.xref.Part1.52">D</a>, <a href="#rfc.xref.Part1.53">D</a>, <a href="#rfc.xref.Part1.54">D</a>, <a href="#rfc.xref.Part1.55">D</a><ul>
    51515150                        <li><em>Section 1.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.3">1.2</a></li>
    5152                         <li><em>Section 2.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.20">7.3.4</a></li>
     5151                        <li><em>Section 2.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.19">7.3.4</a></li>
    51535152                        <li><em>Section 2.5</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.2">1.1</a></li>
    5154                         <li><em>Section 2.6</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.23">7.6.6</a></li>
    5155                         <li><em>Section 2.7</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.4">2</a>, <a href="#rfc.xref.Part1.49">D</a>, <a href="#rfc.xref.Part1.50">D</a>, <a href="#rfc.xref.Part1.53">D</a></li>
    5156                         <li><em>Section 3.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.18">6.5.3</a>, <a href="#rfc.xref.Part1.25">8.4.2</a>, <a href="#rfc.xref.Part1.31">10.3.1</a>, <a href="#rfc.xref.Part1.34">10.3.1</a>, <a href="#rfc.xref.Part1.52">D</a></li>
    5157                         <li><em>Section 3.2.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.46">D</a>, <a href="#rfc.xref.Part1.47">D</a>, <a href="#rfc.xref.Part1.48">D</a></li>
    5158                         <li><em>Section 3.2.4</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.33">10.3.1</a>, <a href="#rfc.xref.Part1.51">D</a>, <a href="#rfc.xref.Part1.54">D</a>, <a href="#rfc.xref.Part1.55">D</a>, <a href="#rfc.xref.Part1.56">D</a></li>
    5159                         <li><em>Section 3.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.7">3</a>, <a href="#rfc.xref.Part1.11">4.2</a>, <a href="#rfc.xref.Part1.21">7.3.6</a>, <a href="#rfc.xref.Part1.30">10.1.2</a></li>
    5160                         <li><em>Section 3.3.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.10">4.1</a></li>
    5161                         <li><em>Section 4</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.38">10.4.1</a></li>
    5162                         <li><em>Section 4.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.36">10.3.1</a></li>
    5163                         <li><em>Section 4.2.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.27">9.4</a>, <a href="#rfc.xref.Part1.40">10.4.2</a></li>
    5164                         <li><em>Section 4.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.37">10.4</a>, <a href="#rfc.xref.Part1.39">10.4.1</a></li>
    5165                         <li><em>Section 4.2.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.28">9.4</a>, <a href="#rfc.xref.Part1.41">10.4.2</a></li>
    5166                         <li><em>Section 4.2.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.29">9.4</a>, <a href="#rfc.xref.Part1.42">10.4.2</a></li>
    5167                         <li><em>Section 4.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.17">6.5</a></li>
    5168                         <li><em>Section 5.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.5">2</a>, <a href="#rfc.xref.Part1.12">5.3.6</a>, <a href="#rfc.xref.Part1.13">5.3.7</a></li>
    5169                         <li><em>Section 5.4</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.16">6.1</a></li>
    5170                         <li><em>Section 5.5</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.6">2</a>, <a href="#rfc.xref.Part1.8">3.1</a>, <a href="#rfc.xref.Part1.9">3.2.4</a>, <a href="#rfc.xref.Part1.24">8</a></li>
    5171                         <li><em>Section 5.7</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.14">5.3.8</a>, <a href="#rfc.xref.Part1.26">8.4.2</a>, <a href="#rfc.xref.Part1.44">C</a></li>
    5172                         <li><em>Section 6.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.35">10.3.1</a></li>
    5173                         <li><em>Section 6.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.19">7.2.2</a>, <a href="#rfc.xref.Part1.22">7.5.15</a></li>
    5174                         <li><em>Section 7.3.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.15">5.3.8</a></li>
    5175                         <li><em>Section 9</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.43">12</a></li>
    5176                         <li><em>Appendix B</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.32">10.3.1</a></li>
     5153                        <li><em>Section 2.6</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.22">7.6.6</a></li>
     5154                        <li><em>Section 2.7</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.4">2</a>, <a href="#rfc.xref.Part1.48">D</a>, <a href="#rfc.xref.Part1.49">D</a>, <a href="#rfc.xref.Part1.52">D</a></li>
     5155                        <li><em>Section 3.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.17">6.5.3</a>, <a href="#rfc.xref.Part1.24">8.4.2</a>, <a href="#rfc.xref.Part1.30">10.3.1</a>, <a href="#rfc.xref.Part1.33">10.3.1</a>, <a href="#rfc.xref.Part1.51">D</a></li>
     5156                        <li><em>Section 3.2.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.45">D</a>, <a href="#rfc.xref.Part1.46">D</a>, <a href="#rfc.xref.Part1.47">D</a></li>
     5157                        <li><em>Section 3.2.4</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.32">10.3.1</a>, <a href="#rfc.xref.Part1.50">D</a>, <a href="#rfc.xref.Part1.53">D</a>, <a href="#rfc.xref.Part1.54">D</a>, <a href="#rfc.xref.Part1.55">D</a></li>
     5158                        <li><em>Section 3.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.10">4.2</a>, <a href="#rfc.xref.Part1.20">7.3.6</a>, <a href="#rfc.xref.Part1.29">10.1.2</a></li>
     5159                        <li><em>Section 3.3.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.9">4.1</a></li>
     5160                        <li><em>Section 4</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.37">10.4.1</a></li>
     5161                        <li><em>Section 4.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.35">10.3.1</a></li>
     5162                        <li><em>Section 4.2.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.26">9.4</a>, <a href="#rfc.xref.Part1.39">10.4.2</a></li>
     5163                        <li><em>Section 4.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.36">10.4</a>, <a href="#rfc.xref.Part1.38">10.4.1</a></li>
     5164                        <li><em>Section 4.2.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.27">9.4</a>, <a href="#rfc.xref.Part1.40">10.4.2</a></li>
     5165                        <li><em>Section 4.2.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.28">9.4</a>, <a href="#rfc.xref.Part1.41">10.4.2</a></li>
     5166                        <li><em>Section 4.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.16">6.5</a></li>
     5167                        <li><em>Section 5.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.5">2</a>, <a href="#rfc.xref.Part1.11">5.3.6</a>, <a href="#rfc.xref.Part1.12">5.3.7</a></li>
     5168                        <li><em>Section 5.4</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.15">6.1</a></li>
     5169                        <li><em>Section 5.5</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.6">2</a>, <a href="#rfc.xref.Part1.7">3.1</a>, <a href="#rfc.xref.Part1.8">3.2.4</a>, <a href="#rfc.xref.Part1.23">8</a></li>
     5170                        <li><em>Section 5.7</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.13">5.3.8</a>, <a href="#rfc.xref.Part1.25">8.4.2</a>, <a href="#rfc.xref.Part1.43">C</a></li>
     5171                        <li><em>Section 6.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.34">10.3.1</a></li>
     5172                        <li><em>Section 6.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.18">7.2.2</a>, <a href="#rfc.xref.Part1.21">7.5.15</a></li>
     5173                        <li><em>Section 7.3.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.14">5.3.8</a></li>
     5174                        <li><em>Section 9</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.42">12</a></li>
     5175                        <li><em>Appendix B</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.31">10.3.1</a></li>
    51775176                     </ul>
    51785177                  </li>

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

    r1898 r1900  
    316316   if the request is successfully applied, whereas a representation in the
    317317   payload of a POST request (<xref target="POST"/>) represents an anonymous
    318    resource for providing data to be processed, such as a specific encoding
    319    format for the information that a user entered within an HTML form.
     318   resource for providing data to be processed, such as the information that
     319   a user entered within an HTML form.
    320320</t>
    321321<t>
    … …  
    323323   (<xref target="GET"/>) contains a representation of the target resource,
    324324   as observed at the time of the message origination date
    325    (<xref target="header.date"/>), whereas the same response to POST might
    326    contain either a representation of the processing result or a current
    327    representation of the target resource after applying the processing.
    328    Response messages with an error status code usually contain a
    329    representation that describes the error and what next steps are suggested
     325   (<xref target="header.date"/>), whereas the same status code in a response
     326   to POST might contain either a representation of the processing result or
     327   a current representation of the target resource after applying the
     328   processing. Some responses only contain the representation's header fields
     329   as the payload. Response messages with an error status code usually contain
     330   a representation that describes the error and what next steps are suggested
    330331   for resolving it.
    331 </t>
    332 <t>
    333    A representation body is only present in a message when a message body is
    334    present, as described in &message-body;. The representation body is obtained
    335    from the message body by decoding any <x:ref>Transfer-Encoding</x:ref> that
    336    might have been applied to ensure safe and proper transfer of the message.
    337332</t>
    338333
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