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https://github.com/moparisthebest/xeps
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Merge commit 'refs/pull/593/head' of https://github.com/xsf/xeps into feature/xep-0153
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commit
8a7ab06821
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xep-0153.xml
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xep-0153.xml
@ -26,6 +26,12 @@
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<url>http://www.xmpp.org/schemas/vcard-avatar.xsd</url>
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<url>http://www.xmpp.org/schemas/vcard-avatar.xsd</url>
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</schemaloc>
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</schemaloc>
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&stpeter;
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&stpeter;
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<revision>
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<version>1.1</version>
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<date>2018-02-26</date>
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<initials>jwi</initials>
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<remark>Clarify encoding of the photo hash in the presence update.</remark>
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</revision>
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<revision>
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<revision>
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<version>1.0</version>
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<version>1.0</version>
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<date>2006-08-16</date>
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<date>2006-08-16</date>
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@ -110,14 +116,15 @@
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<example caption="User's Server Acknowledges Publish"><![CDATA[
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<example caption="User's Server Acknowledges Publish"><![CDATA[
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<iq to='juliet@capulet.com' type='result' id='vc1'/>
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<iq to='juliet@capulet.com' type='result' id='vc1'/>
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]]></example>
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]]></example>
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<p>Next, the user's client computes the SHA1 hash of the avatar image data itself (not the base64-encoded version) in accordance with &rfc3174;. This hash is then included in the user's presence information as the XML character data of the <photo/> child of an &X; element qualified by the 'vcard-temp:x:update' namespace, as shown in the following example:</p>
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<p>Next, the user's client computes the SHA1 hash of the avatar image data itself (not the base64-encoded version) in accordance with &rfc3174;. This hash is then included in the user's presence information. This is done by putting the hash encoded as hexadecimal digits as the XML character data of the <photo/> child of an &X; element qualified by the 'vcard-temp:x:update' namespace, as shown in the following example:</p>
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<example caption="User's Client Includes Avatar Hash in Presence Broadcast"><![CDATA[
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<example caption="User's Client Includes Avatar Hash in Presence Broadcast"><![CDATA[
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<presence from='juliet@capulet.com/balcony'>
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<presence from='juliet@capulet.com/balcony'>
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<x xmlns='vcard-temp:x:update'>
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<x xmlns='vcard-temp:x:update'>
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<photo>sha1-hash-of-image</photo>
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<photo>01b87fcd030b72895ff8e88db57ec525450f000d</photo>
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</x>
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</x>
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</presence>
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</presence>
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]]></example>
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]]></example>
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<p>Note that while XML Schema defines the canonical representation of hexadecimal values to be upper-case, the historical use throughout the XMPP ecosystem has established lower-case use. Entities need to be able to process both and may prefer to emit lower-case for compatibility.</p>
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<p>The user's server then broadcasts that presence information to all contacts who are subscribed to the user's presence information.</p>
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<p>The user's server then broadcasts that presence information to all contacts who are subscribed to the user's presence information.</p>
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</section2>
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</section2>
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<section2 topic='Contact Retrieves Avatar' anchor='retrieve'>
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<section2 topic='Contact Retrieves Avatar' anchor='retrieve'>
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@ -270,7 +277,7 @@
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<xs:element name='x'>
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<xs:element name='x'>
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<xs:complexType>
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<xs:complexType>
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<xs:sequence>
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<xs:sequence>
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<xs:element name='photo' minOccurs='0' type='xs:base64Binary'/>
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<xs:element name='photo' minOccurs='0' type='xs:hexBinary'/>
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</xs:sequence>
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</xs:sequence>
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</xs:complexType>
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</xs:complexType>
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</xs:element>
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</xs:element>
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