<html xmlns="http://www.w3.org/1999/xhtml"><head></head><body><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="6" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[6]</anchor-end> <dfn><code class="HTTP" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">Accept-Datetime:</anchor></code></dfn> は、取得したい過去の状態の<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">日時</anchor>を表します。</p><section><h1>仕様書</h1><refs xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:"><ul xmlns="http://www.w3.org/1999/xhtml"><li><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="1" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[1]</anchor-end> <strong><cite xml:lang="en">RFC 7089 - HTTP Framework for Time-Based Access to Resource States -- Memento</cite> (<time>2014-10-05 16:32:34 +09:00</time> 版) <anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="http://tools.ietf.org/html/rfc7089#section-2.1.1">http://tools.ietf.org/html/rfc7089#section-2.1.1</anchor-external></strong></li><li><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="7" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[7]</anchor-end> <cite xml:lang="en">RFC 7089 - HTTP Framework for Time-Based Access to Resource States -- Memento</cite> (<time>2014-10-05 16:32:34 +09:00</time> 版) <anchor-external xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resScheme="URI" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:resParameter="http://tools.ietf.org/html/rfc7089#section-4.5.3">http://tools.ietf.org/html/rfc7089#section-4.5.3</anchor-external></li></ul></refs></section><section><h1>意味</h1><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="2" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[2]</anchor-end> <code class="HTTP" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">Accept-Datetime:</anchor></code> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">ヘッダー</anchor>は、
<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">利用者エージェント</anchor>が <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">Original Resource</anchor> の過去の状態を望むことを示します <src xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:10:"><anchor-internal xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="1" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">&gt;&gt;1</anchor-internal></src>。</p><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="4" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[4]</anchor-end> 値は、望む過去の状態の<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">日時</anchor>を表します <src xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:10:"><anchor-internal xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="1" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">&gt;&gt;1</anchor-internal></src>。</p></section><section><h1>構文</h1><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="5" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[5]</anchor-end> 値は、 <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">HTTPの日時形式</anchor>の1つである <code class="ABNF" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">rfc1123-date</anchor></code> です <src xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:10:"><anchor-internal xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="1" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">&gt;&gt;1</anchor-internal></src>。</p><figure class="railroad"><ol><li><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">HTTPの日時形式</anchor></li></ol></figure></section><section><h1>文脈</h1><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="3" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[3]</anchor-end> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">Original Resource</anchor> の <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">TimeGate</anchor> への<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">HTTP要求</anchor>で使います <src xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:10:"><anchor-internal xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="1" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">&gt;&gt;1</anchor-internal></src>。</p></section><section><h1>処理</h1><p><anchor-end xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="8" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">[8]</anchor-end> <code class="HTTP" xml:lang="en"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">Accept-Datetime:</anchor></code> <anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">ヘッダー</anchor>の構文が正しくなければ、
<code class="HTTP"><anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:">400</anchor></code> を返さなければ<anchor xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:"><strong xmlns="http://www.w3.org/1999/xhtml">なりません</strong></anchor> <src xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:10:"><anchor-internal xmlns="urn:x-suika-fam-cx:markup:suikawiki:0:9:" a0:anchor="7" xmlns:a0="urn:x-suika-fam-cx:markup:suikawiki:0:9:">&gt;&gt;7</anchor-internal></src>。</p></section></body></html>