Legacy Entity Time

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Legacy Entity Time This specification provides historical documentation of the legacy jabber:iq:time namespace, which has been deprecated in favor the urn:xmpp:time namespace defined in XEP-0202. &LEGALNOTICE; 0090 Obsolete Historical Standards XMPP Core XEP-0202 iq-time http://www.xmpp.org/schemas/iq-time.xsd &stpeter; 1.2 2009-05-27 psa Per a vote of the XMPP Council, changed status to Obsolete. 1.1 2007-03-28 psa Per a vote of the XMPP Council, deprecated in favor of XEP-0202. 1.0 2003-10-08 psa Per a vote of the Jabber Council, changed status to Active. 0.1 2003-05-22 psa Initial version.

Note: This specification has been deprecated in favor of &xep0202;.

This document provides canonical documentation of the 'jabber:iq:time' namespace, which was long used by Jabber applications to discover the time at another entity's location. This document is of historical importance only, since it has been deprecated in favor of XEP-0202.

The 'jabber:iq:time' namespace provides a standard way for Jabber entities to exchange information about the local time (e.g., to "ping" another entity or check network latency). The information is communicated in a request/response pair using an &IQ; element that contains a &QUERY; scoped by the 'jabber:iq:time' namespace. The following children of the &QUERY; element are allowed in an IQ result:

<utc/> -- The time (in UTC) according to the responding entity. The format SHOULD be "CCYYMMDDThh:mm:ss" (see below). This element is REQUIRED in an IQ result.
<tz/> -- The time zone in which the responding entity is located. This can be either a three-letter acronym or the full natural-language name of the timezone. A list of time zone names and abbreviations is located at <http://www.timeanddate.com/library/abbreviations/timezones/>. This element is OPTIONAL in an IQ result.
<display/> -- The time in a human-readable format. This element is OPTIONAL in an IQ result.

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The standard error conditions described in &xep0086; apply (e.g., service unavailable if the entity does not support the namespace).

&xep0082; defines the lexical representation of dates, times, and datetimes in Jabber protocols. Unfortunately, the 'jabber:iq:time' namespace predates that definition, and uses a datetime format ("CCYYMMDDThh:mm:ss") that is inconsistent with XEP-0082 and &w3xmlschema2;. Because a large base of deployed software uses the old format, this document specifies that applications using 'jabber:iq:time' SHOULD use the old format, not the format defined in XEP-0082. In addition, note well that the datetime provided in the <utc/> element is explicitly UTC and therefore SHOULD NOT include the ending 'Z' character required by &iso8601;.

There are no security features or concerns related to this document.

This document requires no interaction with &IANA;.

The 'jabber:iq:time' namespace is registered in the protocol namespaces registry maintained by the ®ISTRAR;.





  
    
      The protocol documented by this schema is defined in
      XEP-0090: http://www.xmpp.org/extensions/xep-0090.html

      NOTE: This protocol has been deprecated in favor of the
            Entity Time protocol specified in XEP-0202:
            http://www.xmpp.org/extensions/xep-0202.html
    
  

  
    
      
        
        
        
      
    
  


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