Changeset 600


Ignore:
Timestamp:
06/07/09 09:50:26 (13 years ago)
Author:
julian.reschke@…
Message:

Take out language that implied that there may be methods for which a request body MUST NOT be included (related to #88)

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

Legend:

Unmodified
Added
Removed

  • draft-ietf-httpbis/latest/p1-messaging.html

    r599 r600  
    471471         <tr>
    472472            <td class="header left"></td>
    473             <td class="header right">July 1, 2009</td>
     473            <td class="header right">July 6, 2009</td>
    474474         </tr>
    475475      </table>
    … …  
    12441244      <p id="rfc.section.4.3.p.4">The rules for when a message-body is allowed in a message differ for requests and responses.</p>
    12451245      <p id="rfc.section.4.3.p.5">The presence of a message-body in a request is signaled by the inclusion of a Content-Length or Transfer-Encoding header field
    1246          in the request's message-headers. A message-body <em class="bcp14">MUST NOT</em> be included in a request if the specification of the request method (<a href="p2-semantics.html#method" title="Method">Section 2</a> of <a href="#Part2" id="rfc.xref.Part2.3"><cite title="HTTP/1.1, part 2: Message Semantics">[Part2]</cite></a>) explicitly disallows an entity-body in requests. When a request message contains both a message-body of non-zero length
    1247          and a method that does not define any semantics for that request message-body, then an origin server <em class="bcp14">SHOULD</em> either ignore the message-body or respond with an appropriate error message (e.g., 413). A proxy or gateway, when presented
     1246         in the request's message-headers. When a request message contains both a message-body of non-zero length and a method that
     1247         does not define any semantics for that request message-body, then an origin server <em class="bcp14">SHOULD</em> either ignore the message-body or respond with an appropriate error message (e.g., 413). A proxy or gateway, when presented
    12481248         the same request, <em class="bcp14">SHOULD</em> either forward the request inbound with the message-body or ignore the message-body when determining a response.
    12491249      </p>
    … …  
    13231323      <div id="rfc.figure.u.38"></div><pre class="inline"><span id="rfc.iref.g.79"></span>  <a href="#request" class="smpl">Request</a>       = <a href="#request-line" class="smpl">Request-Line</a>              ; <a href="#request-line" title="Request-Line">Section&nbsp;5.1</a>
    13241324                  *(( <a href="#general.header.fields" class="smpl">general-header</a>        ; <a href="#general.header.fields" title="General Header Fields">Section&nbsp;4.5</a>
    1325                    / <a href="#abnf.dependencies" class="smpl">request-header</a>         ; <a href="#Part2" id="rfc.xref.Part2.4"><cite title="HTTP/1.1, part 2: Message Semantics">[Part2]</cite></a>, <a href="p2-semantics.html#request.header.fields" title="Request Header Fields">Section 3</a>
     1325                   / <a href="#abnf.dependencies" class="smpl">request-header</a>         ; <a href="#Part2" id="rfc.xref.Part2.3"><cite title="HTTP/1.1, part 2: Message Semantics">[Part2]</cite></a>, <a href="p2-semantics.html#request.header.fields" title="Request Header Fields">Section 3</a>
    13261326                   / <a href="#abnf.dependencies" class="smpl">entity-header</a> ) <a href="#core.rules" class="smpl">CRLF</a> )  ; <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#entity.header.fields" title="Entity Header Fields">Section 3.1</a>
    13271327                  <a href="#core.rules" class="smpl">CRLF</a>
    … …  
    13541354</pre><p id="rfc.section.5.1.2.p.7">To allow for transition to absolute-URIs in all requests in future versions of HTTP, all HTTP/1.1 servers <em class="bcp14">MUST</em> accept the absolute-URI form in requests, even though HTTP/1.1 clients will only generate them in requests to proxies.
    13551355      </p>
    1356       <p id="rfc.section.5.1.2.p.8">The authority form is only used by the CONNECT method (<a href="p2-semantics.html#CONNECT" title="CONNECT">Section 7.9</a> of <a href="#Part2" id="rfc.xref.Part2.5"><cite title="HTTP/1.1, part 2: Message Semantics">[Part2]</cite></a>).
     1356      <p id="rfc.section.5.1.2.p.8">The authority form is only used by the CONNECT method (<a href="p2-semantics.html#CONNECT" title="CONNECT">Section 7.9</a> of <a href="#Part2" id="rfc.xref.Part2.4"><cite title="HTTP/1.1, part 2: Message Semantics">[Part2]</cite></a>).
    13571357      </p>
    13581358      <p id="rfc.section.5.1.2.p.9">The most common form of request-target is that used to identify a resource on an origin server or gateway. In this case the
    … …  
    13861386      </div>
    13871387      <p id="rfc.section.5.1.2.p.18">HTTP does not place a pre-defined limit on the length of a request-target. A server <em class="bcp14">MUST</em> be prepared to receive URIs of unbounded length and respond with the 414 (URI Too Long) status if the received request-target
    1388          would be longer than the server wishes to handle (see <a href="p2-semantics.html#status.414" title="414 URI Too Long">Section 8.4.15</a> of <a href="#Part2" id="rfc.xref.Part2.6"><cite title="HTTP/1.1, part 2: Message Semantics">[Part2]</cite></a>).
     1388         would be longer than the server wishes to handle (see <a href="p2-semantics.html#status.414" title="414 URI Too Long">Section 8.4.15</a> of <a href="#Part2" id="rfc.xref.Part2.5"><cite title="HTTP/1.1, part 2: Message Semantics">[Part2]</cite></a>).
    13891389      </p>
    13901390      <p id="rfc.section.5.1.2.p.19">Various ad-hoc limitations on request-target length are found in practice. It is <em class="bcp14">RECOMMENDED</em> that all HTTP senders and recipients support request-target lengths of 8000 or more OCTETs.
    … …  
    14151415      <div id="rfc.figure.u.47"></div><pre class="inline"><span id="rfc.iref.g.84"></span>  <a href="#response" class="smpl">Response</a>      = <a href="#status-line" class="smpl">Status-Line</a>               ; <a href="#status-line" title="Status-Line">Section&nbsp;6.1</a>
    14161416                  *(( <a href="#general.header.fields" class="smpl">general-header</a>        ; <a href="#general.header.fields" title="General Header Fields">Section&nbsp;4.5</a>
    1417                    / <a href="#abnf.dependencies" class="smpl">response-header</a>        ; <a href="#Part2" id="rfc.xref.Part2.7"><cite title="HTTP/1.1, part 2: Message Semantics">[Part2]</cite></a>, <a href="p2-semantics.html#response.header.fields" title="Response Header Fields">Section 5</a>
     1417                   / <a href="#abnf.dependencies" class="smpl">response-header</a>        ; <a href="#Part2" id="rfc.xref.Part2.6"><cite title="HTTP/1.1, part 2: Message Semantics">[Part2]</cite></a>, <a href="p2-semantics.html#response.header.fields" title="Response Header Fields">Section 5</a>
    14181418                   / <a href="#abnf.dependencies" class="smpl">entity-header</a> ) <a href="#core.rules" class="smpl">CRLF</a> )  ; <a href="#Part3" id="rfc.xref.Part3.9"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>, <a href="p3-payload.html#entity.header.fields" title="Entity Header Fields">Section 3.1</a>
    14191419                  <a href="#core.rules" class="smpl">CRLF</a>
    … …  
    14271427</pre><h3 id="rfc.section.6.1.1"><a href="#rfc.section.6.1.1">6.1.1</a>&nbsp;<a id="status.code.and.reason.phrase" href="#status.code.and.reason.phrase">Status Code and Reason Phrase</a></h3>
    14281428      <p id="rfc.section.6.1.1.p.1">The Status-Code element is a 3-digit integer result code of the attempt to understand and satisfy the request. These codes
    1429          are fully defined in <a href="p2-semantics.html#status.codes" title="Status Code Definitions">Section 8</a> of <a href="#Part2" id="rfc.xref.Part2.8"><cite title="HTTP/1.1, part 2: Message Semantics">[Part2]</cite></a>. The Reason Phrase exists for the sole purpose of providing a textual description associated with the numeric status code,
     1429         are fully defined in <a href="p2-semantics.html#status.codes" title="Status Code Definitions">Section 8</a> of <a href="#Part2" id="rfc.xref.Part2.7"><cite title="HTTP/1.1, part 2: Message Semantics">[Part2]</cite></a>. The Reason Phrase exists for the sole purpose of providing a textual description associated with the numeric status code,
    14301430         out of deference to earlier Internet application protocols that were more frequently used with interactive text clients. A
    14311431         client <em class="bcp14">SHOULD</em> ignore the content of the Reason Phrase.
    … …  
    14971497      <p id="rfc.section.7.1.2.2.p.2">Clients which assume persistent connections and pipeline immediately after connection establishment <em class="bcp14">SHOULD</em> be prepared to retry their connection if the first pipelined attempt fails. If a client does such a retry, it <em class="bcp14">MUST NOT</em> pipeline before it knows the connection is persistent. Clients <em class="bcp14">MUST</em> also be prepared to resend their requests if the server closes the connection before sending all of the corresponding responses.
    14981498      </p>
    1499       <p id="rfc.section.7.1.2.2.p.3">Clients <em class="bcp14">SHOULD NOT</em> pipeline requests using non-idempotent methods or non-idempotent sequences of methods (see <a href="p2-semantics.html#idempotent.methods" title="Idempotent Methods">Section 7.1.2</a> of <a href="#Part2" id="rfc.xref.Part2.9"><cite title="HTTP/1.1, part 2: Message Semantics">[Part2]</cite></a>). Otherwise, a premature termination of the transport connection could lead to indeterminate results. A client wishing to
     1499      <p id="rfc.section.7.1.2.2.p.3">Clients <em class="bcp14">SHOULD NOT</em> pipeline requests using non-idempotent methods or non-idempotent sequences of methods (see <a href="p2-semantics.html#idempotent.methods" title="Idempotent Methods">Section 7.1.2</a> of <a href="#Part2" id="rfc.xref.Part2.8"><cite title="HTTP/1.1, part 2: Message Semantics">[Part2]</cite></a>). Otherwise, a premature termination of the transport connection could lead to indeterminate results. A client wishing to
    15001500         send a non-idempotent request <em class="bcp14">SHOULD</em> wait to send that request until it has received the response status for the previous request.
    15011501      </p>
    … …  
    15221522      </p>
    15231523      <p id="rfc.section.7.1.4.p.4">This means that clients, servers, and proxies <em class="bcp14">MUST</em> be able to recover from asynchronous close events. Client software <em class="bcp14">SHOULD</em> reopen the transport connection and retransmit the aborted sequence of requests without user interaction so long as the request
    1524          sequence is idempotent (see <a href="p2-semantics.html#idempotent.methods" title="Idempotent Methods">Section 7.1.2</a> of <a href="#Part2" id="rfc.xref.Part2.10"><cite title="HTTP/1.1, part 2: Message Semantics">[Part2]</cite></a>). Non-idempotent methods or sequences <em class="bcp14">MUST NOT</em> be automatically retried, although user agents <em class="bcp14">MAY</em> offer a human operator the choice of retrying the request(s). Confirmation by user-agent software with semantic understanding
     1524         sequence is idempotent (see <a href="p2-semantics.html#idempotent.methods" title="Idempotent Methods">Section 7.1.2</a> of <a href="#Part2" id="rfc.xref.Part2.9"><cite title="HTTP/1.1, part 2: Message Semantics">[Part2]</cite></a>). Non-idempotent methods or sequences <em class="bcp14">MUST NOT</em> be automatically retried, although user agents <em class="bcp14">MAY</em> offer a human operator the choice of retrying the request(s). Confirmation by user-agent software with semantic understanding
    15251525         of the application <em class="bcp14">MAY</em> substitute for user confirmation. The automatic retry <em class="bcp14">SHOULD NOT</em> be repeated if the second sequence of requests fails.
    15261526      </p>
    … …  
    15401540      </p>
    15411541      <h3 id="rfc.section.7.2.3"><a href="#rfc.section.7.2.3">7.2.3</a>&nbsp;<a id="use.of.the.100.status" href="#use.of.the.100.status">Use of the 100 (Continue) Status</a></h3>
    1542       <p id="rfc.section.7.2.3.p.1">The purpose of the 100 (Continue) status (see <a href="p2-semantics.html#status.100" title="100 Continue">Section 8.1.1</a> of <a href="#Part2" id="rfc.xref.Part2.11"><cite title="HTTP/1.1, part 2: Message Semantics">[Part2]</cite></a>) is to allow a client that is sending a request message with a request body to determine if the origin server is willing
     1542      <p id="rfc.section.7.2.3.p.1">The purpose of the 100 (Continue) status (see <a href="p2-semantics.html#status.100" title="100 Continue">Section 8.1.1</a> of <a href="#Part2" id="rfc.xref.Part2.10"><cite title="HTTP/1.1, part 2: Message Semantics">[Part2]</cite></a>) is to allow a client that is sending a request message with a request body to determine if the origin server is willing
    15431543         to accept the request (based on the request headers) before the client sends the request body. In some cases, it might either
    15441544         be inappropriate or highly inefficient for the client to send the body if the server will reject the message without looking
    … …  
    15471547      <p id="rfc.section.7.2.3.p.2">Requirements for HTTP/1.1 clients: </p>
    15481548      <ul>
    1549          <li>If a client will wait for a 100 (Continue) response before sending the request body, it <em class="bcp14">MUST</em> send an Expect request-header field (<a href="p2-semantics.html#header.expect" title="Expect">Section 9.2</a> of <a href="#Part2" id="rfc.xref.Part2.12"><cite title="HTTP/1.1, part 2: Message Semantics">[Part2]</cite></a>) with the "100-continue" expectation.
    1550          </li>
    1551          <li>A client <em class="bcp14">MUST NOT</em> send an Expect request-header field (<a href="p2-semantics.html#header.expect" title="Expect">Section 9.2</a> of <a href="#Part2" id="rfc.xref.Part2.13"><cite title="HTTP/1.1, part 2: Message Semantics">[Part2]</cite></a>) with the "100-continue" expectation if it does not intend to send a request body.
     1549         <li>If a client will wait for a 100 (Continue) response before sending the request body, it <em class="bcp14">MUST</em> send an Expect request-header field (<a href="p2-semantics.html#header.expect" title="Expect">Section 9.2</a> of <a href="#Part2" id="rfc.xref.Part2.11"><cite title="HTTP/1.1, part 2: Message Semantics">[Part2]</cite></a>) with the "100-continue" expectation.
     1550         </li>
     1551         <li>A client <em class="bcp14">MUST NOT</em> send an Expect request-header field (<a href="p2-semantics.html#header.expect" title="Expect">Section 9.2</a> of <a href="#Part2" id="rfc.xref.Part2.12"><cite title="HTTP/1.1, part 2: Message Semantics">[Part2]</cite></a>) with the "100-continue" expectation if it does not intend to send a request body.
    15521552         </li>
    15531553      </ul>
    … …  
    15931593         <li>A proxy <em class="bcp14">MUST NOT</em> forward a 100 (Continue) response if the request message was received from an HTTP/1.0 (or earlier) client and did not include
    15941594            an Expect request-header field with the "100-continue" expectation. This requirement overrides the general rule for forwarding
    1595             of 1xx responses (see <a href="p2-semantics.html#status.1xx" title="Informational 1xx">Section 8.1</a> of <a href="#Part2" id="rfc.xref.Part2.14"><cite title="HTTP/1.1, part 2: Message Semantics">[Part2]</cite></a>).
     1595            of 1xx responses (see <a href="p2-semantics.html#status.1xx" title="Informational 1xx">Section 8.1</a> of <a href="#Part2" id="rfc.xref.Part2.13"><cite title="HTTP/1.1, part 2: Message Semantics">[Part2]</cite></a>).
    15961596         </li>
    15971597      </ul>
    … …  
    30183018      <p id="rfc.section.E.8.p.2">Partly resolved issues: </p>
    30193019      <ul>
     3020         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/88">http://tools.ietf.org/wg/httpbis/trac/ticket/88</a>&gt;: "205 Bodies" (took out language that implied that there may be methods for which a request body MUST NOT be included)
     3021         </li>
    30203022         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/163">http://tools.ietf.org/wg/httpbis/trac/ticket/163</a>&gt;: "editorial improvements around HTTP-date"
    30213023         </li>
    … …  
    32223224            <li class="indline0"><a id="rfc.index.P" href="#rfc.index.P"><b>P</b></a><ul class="ind">
    32233225                  <li class="indline1"><em>Pad1995</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Pad1995.1">7.1.1</a>, <a class="iref" href="#Pad1995"><b>12.2</b></a></li>
    3224                   <li class="indline1"><em>Part2</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part2.1">1.2.3</a>, <a class="iref" href="#rfc.xref.Part2.2">1.2.3</a>, <a class="iref" href="#rfc.xref.Part2.3">4.3</a>, <a class="iref" href="#rfc.xref.Part2.4">5</a>, <a class="iref" href="#rfc.xref.Part2.5">5.1.2</a>, <a class="iref" href="#rfc.xref.Part2.6">5.1.2</a>, <a class="iref" href="#rfc.xref.Part2.7">6</a>, <a class="iref" href="#rfc.xref.Part2.8">6.1.1</a>, <a class="iref" href="#rfc.xref.Part2.9">7.1.2.2</a>, <a class="iref" href="#rfc.xref.Part2.10">7.1.4</a>, <a class="iref" href="#rfc.xref.Part2.11">7.2.3</a>, <a class="iref" href="#rfc.xref.Part2.12">7.2.3</a>, <a class="iref" href="#rfc.xref.Part2.13">7.2.3</a>, <a class="iref" href="#rfc.xref.Part2.14">7.2.3</a>, <a class="iref" href="#Part2"><b>12.1</b></a><ul class="ind">
    3225                         <li class="indline1"><em>Section 2</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part2.3">4.3</a></li>
    3226                         <li class="indline1"><em>Section 3</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part2.1">1.2.3</a>, <a class="iref" href="#rfc.xref.Part2.4">5</a></li>
    3227                         <li class="indline1"><em>Section 5</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part2.2">1.2.3</a>, <a class="iref" href="#rfc.xref.Part2.7">6</a></li>
    3228                         <li class="indline1"><em>Section 7.1.2</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part2.9">7.1.2.2</a>, <a class="iref" href="#rfc.xref.Part2.10">7.1.4</a></li>
    3229                         <li class="indline1"><em>Section 7.9</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part2.5">5.1.2</a></li>
    3230                         <li class="indline1"><em>Section 8</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part2.8">6.1.1</a></li>
    3231                         <li class="indline1"><em>Section 8.1.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part2.11">7.2.3</a></li>
    3232                         <li class="indline1"><em>Section 8.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part2.14">7.2.3</a></li>
    3233                         <li class="indline1"><em>Section 8.4.15</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part2.6">5.1.2</a></li>
    3234                         <li class="indline1"><em>Section 9.2</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part2.12">7.2.3</a>, <a class="iref" href="#rfc.xref.Part2.13">7.2.3</a></li>
     3226                  <li class="indline1"><em>Part2</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part2.1">1.2.3</a>, <a class="iref" href="#rfc.xref.Part2.2">1.2.3</a>, <a class="iref" href="#rfc.xref.Part2.3">5</a>, <a class="iref" href="#rfc.xref.Part2.4">5.1.2</a>, <a class="iref" href="#rfc.xref.Part2.5">5.1.2</a>, <a class="iref" href="#rfc.xref.Part2.6">6</a>, <a class="iref" href="#rfc.xref.Part2.7">6.1.1</a>, <a class="iref" href="#rfc.xref.Part2.8">7.1.2.2</a>, <a class="iref" href="#rfc.xref.Part2.9">7.1.4</a>, <a class="iref" href="#rfc.xref.Part2.10">7.2.3</a>, <a class="iref" href="#rfc.xref.Part2.11">7.2.3</a>, <a class="iref" href="#rfc.xref.Part2.12">7.2.3</a>, <a class="iref" href="#rfc.xref.Part2.13">7.2.3</a>, <a class="iref" href="#Part2"><b>12.1</b></a><ul class="ind">
     3227                        <li class="indline1"><em>Section 3</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part2.1">1.2.3</a>, <a class="iref" href="#rfc.xref.Part2.3">5</a></li>
     3228                        <li class="indline1"><em>Section 5</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part2.2">1.2.3</a>, <a class="iref" href="#rfc.xref.Part2.6">6</a></li>
     3229                        <li class="indline1"><em>Section 7.1.2</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part2.8">7.1.2.2</a>, <a class="iref" href="#rfc.xref.Part2.9">7.1.4</a></li>
     3230                        <li class="indline1"><em>Section 7.9</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part2.4">5.1.2</a></li>
     3231                        <li class="indline1"><em>Section 8</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part2.7">6.1.1</a></li>
     3232                        <li class="indline1"><em>Section 8.1.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part2.10">7.2.3</a></li>
     3233                        <li class="indline1"><em>Section 8.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part2.13">7.2.3</a></li>
     3234                        <li class="indline1"><em>Section 8.4.15</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part2.5">5.1.2</a></li>
     3235                        <li class="indline1"><em>Section 9.2</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part2.11">7.2.3</a>, <a class="iref" href="#rfc.xref.Part2.12">7.2.3</a></li>
    32353236                     </ul>
    32363237                  </li>

  • draft-ietf-httpbis/latest/p1-messaging.xml

    r599 r600  
    3232  <!ENTITY request-header-fields  "<xref target='Part2' x:rel='#request.header.fields' xmlns:x='http://purl.org/net/xml2rfc/ext'/>">
    3333  <!ENTITY response-header-fields "<xref target='Part2' x:rel='#response.header.fields' xmlns:x='http://purl.org/net/xml2rfc/ext'/>">
    34   <!ENTITY method                 "<xref target='Part2' x:rel='#method' xmlns:x='http://purl.org/net/xml2rfc/ext'/>">
    3534  <!ENTITY status-codes           "<xref target='Part2' x:rel='#status.codes' xmlns:x='http://purl.org/net/xml2rfc/ext'/>">
    3635  <!ENTITY status-100             "<xref target='Part2' x:rel='#status.100' xmlns:x='http://purl.org/net/xml2rfc/ext'/>">
    … …  
    13781377   The presence of a message-body in a request is signaled by the
    13791378   inclusion of a Content-Length or Transfer-Encoding header field in
    1380    the request's message-headers. A message-body &MUST-NOT; be included in
    1381    a request if the specification of the request method (&method;)
    1382    explicitly disallows an entity-body in requests.
     1379   the request's message-headers.
    13831380   When a request message contains both a message-body of non-zero
    13841381   length and a method that does not define any semantics for that
    … …  
    49524949  <list style="symbols">
    49534950    <t>
     4951      <eref target="http://tools.ietf.org/wg/httpbis/trac/ticket/88"/>:
     4952      "205 Bodies" (took out language that implied that there may be
     4953      methods for which a request body MUST NOT be included)
     4954    </t>
     4955    <t>
    49544956      <eref target="http://tools.ietf.org/wg/httpbis/trac/ticket/163"/>:
    49554957      "editorial improvements around HTTP-date"
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