[jdev] GEOLOC Support

[Stephen Pendleton]

Hi, I thought I would put together a simple "cookbook" on how to add GEOLOC XEP-0080 support to a client. Hopefully it will help someone else out. If anyone sees any problems with the steps below, please let me know. BTW, I am not sure why Step 1 is needed since Step 2 advertises the same capabilities.
 
STEPS TO ADD GEOLOC SUPPORT:
1) Client should respond to iq query http://jabber.org/protocol/disco#info with a stanza like: <iq type='result'...><<query xmlns='http://jabber.org/protocol/disco#info'><feature var='http://jabber.org/geoloc'/><feature var='http://jabber.org/geoloc+notify'/>
 
2) Client should add <c> stanza to presence stanza with the proper "ver" attribute indicating geoloc support. The "ver" attribute is a SHA-1 hash of a string like:"client/pc//fooclient 1.0<http://jabber.org/protcol/geoloc<http://jabber.org/protcol/geoloc+notify<"
 
The stanza looks something like:
<presence from='romeo at montague.lit/orchard'>  <c xmlns='http://jabber.org/protocol/caps'      hash='sha-1'     node='http://www.chatopus.com'     ver='zHyEOgxTrkpSdGcQKH8EFPLsriY='/></presence>
 
3) When location changes the client publishes its new location:
<iq type='set' from='portia at merchantofvenice.lit/pda' id='publish1'>  <pubsub xmlns='http://jabber.org/protocol/pubsub'>    <publish node='http://jabber.org/protocol/geoloc'>      <item>        <geoloc xmlns='http://jabber.org/protocol/geoloc' xml:lang='en'>          <country>Italy</country>          <lat>45.44</lat>          <locality>Venice</locality>          <lon>12.33</lon>        </geoloc>      </item>    </publish>  </pubsub></iq>
4) Subscribers will receive:<message from='portia at merchantofvenice.lit'          to='bassanio at merchantofvenice.lit'>  <event xmlns='http://jabber.org/protocol/pubsub#event'>    <items node='http://jabber.org/protocol/geoloc'>      <item id='d81a52b8-0f9c-11dc-9bc8-001143d5d5db'>        <geoloc xmlns='http://jabber.org/protocol/geoloc' xml:lang='en'>          <country>Italy</country>          <lat>45.44</lat>          <locality>Venice</locality>          <lon>12.33</lon>        </geoloc>      </item>    </items>  </event></message>
 
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