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Social networks are not closed off to the rest of the web anymore. Various standards like ActivityStreams, PubSubHubbub, WebFinger, OpenSocial, Salmon, OEmbed, XAuth or OExchange are emerging to open them up to other websites. I will introduce these protocols, show how they work together, how you can benefit from them and give an outlook on how they will change the world of social networks.
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Bastian Hofmann, VZnet Netzwerke Ltd
Opening up the Social Web
Standards that are bridging the Islands
Mittwoch, 13. Oktober 2010
Agenda
•OpenID•WebFinger•Well-Known URIs•Web Host Meta Data
•XRD•Portable Contacts
•Activity Strea.ms
•PubSubHubbub•Salmon•OExchange•XAuth•OEmbed•OpenSocial•SWAT0
Mittwoch, 13. Oktober 2010
nikko russano*
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... you could not send a mail to another provider
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... you could not call your friends at another carrier
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Back to reality
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Meet Bill and Steve
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Bill want‘s to comment on Steve‘s blog
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Has to sign up for an account
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OpenID
•Steve‘s blog can use Bill‘s Identy Provider to sign in
•Discovery through unique OpenID–http://openid.live.com/bill
•More info at my OpenID talk
http://openid.net/
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Bill want‘s to know more about Steve
paurian
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In the old days: Fingerbhofmann@svz-pcn-107 ~ $ finger bhofmann
Login: bhofmann Name: Bastian HofmannDirectory: /Users/bhofmann Shell: /bin/bashOn since Di 14 Sep 21:45 (CEST) on console, idle 1:36 (messages off)On since Di 14 Sep 23:02 (CEST) on ttys000No Mail.No Plan.
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Now: WebFinger
http://code.google.com/p/webfinger/
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http://example.com/.well-known/host-meta<?xml version='1.0' encoding='UTF-8'?><XRD xmlns='http://docs.oasis-open.org/ns/xri/xrd-1.0' xmlns:hm='http://host-meta.net/xrd/1.0'> <hm:Host>example.com</hm:Host> <Link rel='lrdd' template='http://example.com/describe?uri={uri}'> <Title>Resource Descriptor</Title> </Link></XRD>
http://tools.ietf.org/html/draft-nottingham-site-metahttp://tools.ietf.org/html/draft-hammer-hostmetahttp://docs.oasis-open.org/xri/xrd/v1.0/xrd-1.0.html
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http://example.com/describe?uri=acct:[email protected]<?xml version='1.0' encoding='UTF-8'?><XRD xmlns='http://docs.oasis-open.org/ns/xri/xrd-1.0'> <Subject>acct:[email protected]</Subject> <Alias>http://example.com/profiles/joe</Alias> <Link rel='http://portablecontacts.net/spec/1.0' href='http://example.com/api/people/' /> <Link rel='http://webfinger.net/rel/profile-page' type='text/html' href='http://example.com/profiles/joe' /> <Link rel='http://microformats.org/profile/hcard' type='text/html' href='http://example.com/profiles/joe' /> <Link rel='describedby' type='text/html' href='http://example.com/profiles/joe' /> <Link rel='http://webfinger.net/rel/avatar' href='http://example.com/profiles/joe/photo' /></XRD>
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Portable Contacts
{ "id" : "example.org:34KJDCSKJN2HHF0DW20394", "displayName" : "Janey", "name" : {"unstructured" : "Jane Doe"}, "gender" : "female"}
•standardized access to user data and their relations (Social Graph)
•simple to use
http://portablecontacts.net/
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DEMO
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He want‘s to follow Steve‘s status updates
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ActivityStrea.ms
•Standard for a stream of activities (Feed)
•Atom based
http://activitystrea.ms/
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PubSubHubbubretrieves Atom feed with Hub URL
Hub
posts sthpings everysubscriber
subscribes for feed
ackssubscription
http://code.google.com/p/pubsubhubbub/
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DEMO
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Now Bill mentions Steve to his pal
have a look at @steve stream
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and what about Comments?
new macs will have IE9
I would‘ve chosenChrome
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Salmon
http://www.salmon-protocol.org/
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Salmon
http://www.salmon-protocol.org/
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Salmon
http://www.salmon-protocol.org/
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DEMO
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Bill is now on his favourite Video Portal
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He want‘s to share a video with his friends
... but his favourite social network has no sharing button at YouTube
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Nascar Problem
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XAuth at Provider
•100% Client Technology
XAuth.extend({ token: "1", expire: new Date().getTime() + 60*60*24*1000, extend: ["*"], });
Login xauth.org/xauth.js
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XAuth at Consumer
Visits xauth.org/xauth.js
XAuth.retrieve({ retrieve: ['xauth.org'], callback: receiveTokens });
•But static server on central domain needed
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OExchange
•Common API for publishing sth. into social networks
http://www.example.com/share.php?url={URI}&title={title for the content}&description={short description of the content}&ctype=flash&swfurl={SWF URI}&height={preferred SWF height}&width={preferred swf width}&screenshot={screenshot URI}
http://www.oexchange.org/
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Discovery over XRD<?xml version='1.0' encoding='UTF-8'?><XRD xmlns="http://docs.oasis-open.org/ns/xri/xrd-1.0"> <Subject>http://www.example.com/linkeater</Subject> <Property type="http://www.oexchange.org/spec/0.8/prop/vendor"> Examples Inc.</Property> <Property type="http://www.oexchange.org/spec/0.8/prop/title"> A Link-Accepting Service</Property> <Link rel= "icon" href="http://www.example.com/favicon.ico" type="image/vnd.microsoft.icon" /> <Link rel= "http://www.oexchange.org/spec/0.8/rel/offer" href="http://www.example.com/linkeater/offer.php" type="text/html" /></XRD>
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DEMO
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Now there is a link in his status update
cool video:http://www.youtube.com/watch?v=OFzkTxiwziQ
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OEmbed
•Retrieves embeddable content for a given link
http://www.flickr.com/services/oembed/?url=http%3A//www.flickr.com/photos/bees/2341623661/
{ "version": "1.0", "type": "photo", "width": 240, "height": 160, "title": "ZB8T0193", "url": "http://farm4.static.flickr.com/3123/2341623661_7c99f48bbf_m.jpg", "author_name": "Bees", "author_url": "http://www.flickr.com/photos/bees/", "provider_name": "Flickr", "provider_url": "http://www.flickr.com/"} http://oembed.com/
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OEmbed Discovery
•Discoverable through meta tags at original resource
<link rel="alternate" type="application/json+oembed" href="http://flickr.com/services/oembed?url=http%3A//flickr.com/photos/bees/2362225867/&format=json" title="Bacon Lollys oEmbed Profile" /><link rel="alternate" type="text/xml+oembed" href="http://flickr.com/services/oembed?url=http%3A//flickr.com/photos/bees/2362225867/&format=xml" title="Bacon Lollys oEmbed Profile" />
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The embedded result
cool video:
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OEmbed Aggregation
•embed.ly•supports 112 services over one endpoint
•several libraries•easy implementation
http://embed.ly/
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DEMO
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Bill is really into social games
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Social Apps with OpenSocial
•One App, many containers•Users of one container can play with users on other containers
•Widely adopted into many social networks
•Also used in some enterprise applications
http://www.opensocial.org/
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OpenSocial Reach
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DEMO
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OpenSocial Europe Event06.12. - 07.12.
Utrecht (NL)
http://blog.opensocial.org/2010/10/first-european-opensocial-event-in.html
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Many standards available
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But still much to be done
•Friends and Friendships•Privacy•Access Control•What is the right identifier?•More than one provider with one E-Mail Address?
•Wide adoption•Easy implementation
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Many projects - one common goal
http://federatedsocialweb.net
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And many people working on it
http://federatedsocialweb.net
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Social Web Acid Test - Level 0
factoryjoe
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How far is VZnet?
•OpenSocial•OEmbed•OExchange•XRD•PortableContacts•ActivityStrea.ms•OpenID•WebFinger•PubsubHubbub
•Salmon•XAuth
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Thank you
http://studivz.net/bastianhttp://twitter.com/BastianHofmannhttp://slideshare.net/bashofmann
http://github.com/vznethttp://developer.studivz.net
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