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Session Mobility for Pervasive Collaborative Apps using XMPP

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LAYERS




 MOBILIS
                            Session Mobility for Pervasive
                            Collaborative Apps using XMPP
                                              PerCol 2013, San Diego - 2013-03-18

                                 István Koren, RWTH Aachen University, ACIS Group
                                             koren@dbis.rwth-aachen.de
                         Daniel Schuster & Thomas Springer, TU Dresden, Computer Networks
                                  {daniel.schuster | thomas.springer}@tu-dresden.de
Lehrstuhl Informatik 5
(Information Systems)
   Prof. Dr. M. Jarke
   I5-FL-0213-1                 This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
{Advanced | ATLAS | Awesome | Aachen}
 LAYERS                   Community Information Systems (ACIS)


 MOBILIS


                                                Responsive
                              Web Engineering                 Community




                                                                              Web Analytics
                                                   Open
                                                              Visualization
                                                Community
                                                                  and
                                                Information
                                                               Simulation
                                                  Systems



                                                Community      Community
                                                 Support        Analytics




Lehrstuhl Informatik 5
                                                  Requirements
(Information Systems)
   Prof. Dr. M. Jarke
   I5-FL-0213-2
                                                   Engineering
LAYERS                                   Session Mobility?
                            Refers to…
 MOBILIS                     – IP mobility protocols
                             – multimedia session mobility
                             – application migration

                            Examples                        fig.1: Cisco WebEx

                             – Card Game on a TV
                             – Collaborative Editing

                          our work is about Session Mobility for
Lehrstuhl Informatik 5
(Information Systems)
   Prof. Dr. M. Jarke
                             Collaborative Pervasive Apps!
   I5-FL-0213-3
LAYERS                                       Related Works
                            Plain SIP: session handoff and call
 MOBILIS                     transfer (INVITE, REFER, …)


                            Multi-Device Manager
                                                                               fig.2: SIP REFER
                             (Stähle et al.)

                            RFC 5631:
                             SIP Session Mobility

Lehrstuhl Informatik 5
(Information Systems)
   Prof. Dr. M. Jarke                                              fig.3: Multi-Device System
   I5-FL-0213-4
LAYERS                                      Requirements
                            Session Transfer
 MOBILIS



                                                    fig.4: Session Transfer
                            Session Split



                                                   fig.5: Session Split
                          Device Discovery
Lehrstuhl Informatik 5
(Information Systems)
   Prof. Dr. M. Jarke
                          Packet Filtering
   I5-FL-0213-5
LAYERS                                         Why XMPP?
                            Standard based solution
 MOBILIS
                            Real-time XML based message exchange
                            Supports multiple sessions per user
                             – alice@example.org/tablet
                            Various Extension Protocols (XEPs)
                             – Multi-User Chat, Pub Sub, File Transfer
                            Library availability!
Lehrstuhl Informatik 5
(Information Systems)
                             – Smack, Strophe etc.
   Prof. Dr. M. Jarke
   I5-FL-0213-6

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Session Mobility for Pervasive Collaborative Apps using XMPP

  • 1. LAYERS MOBILIS Session Mobility for Pervasive Collaborative Apps using XMPP PerCol 2013, San Diego - 2013-03-18 István Koren, RWTH Aachen University, ACIS Group koren@dbis.rwth-aachen.de Daniel Schuster & Thomas Springer, TU Dresden, Computer Networks {daniel.schuster | thomas.springer}@tu-dresden.de Lehrstuhl Informatik 5 (Information Systems) Prof. Dr. M. Jarke I5-FL-0213-1 This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
  • 2. {Advanced | ATLAS | Awesome | Aachen} LAYERS Community Information Systems (ACIS) MOBILIS Responsive Web Engineering Community Web Analytics Open Visualization Community and Information Simulation Systems Community Community Support Analytics Lehrstuhl Informatik 5 Requirements (Information Systems) Prof. Dr. M. Jarke I5-FL-0213-2 Engineering
  • 3. LAYERS Session Mobility?  Refers to… MOBILIS – IP mobility protocols – multimedia session mobility – application migration  Examples fig.1: Cisco WebEx – Card Game on a TV – Collaborative Editing  our work is about Session Mobility for Lehrstuhl Informatik 5 (Information Systems) Prof. Dr. M. Jarke Collaborative Pervasive Apps! I5-FL-0213-3
  • 4. LAYERS Related Works  Plain SIP: session handoff and call MOBILIS transfer (INVITE, REFER, …)  Multi-Device Manager fig.2: SIP REFER (Stähle et al.)  RFC 5631: SIP Session Mobility Lehrstuhl Informatik 5 (Information Systems) Prof. Dr. M. Jarke fig.3: Multi-Device System I5-FL-0213-4
  • 5. LAYERS Requirements  Session Transfer MOBILIS fig.4: Session Transfer  Session Split fig.5: Session Split  Device Discovery Lehrstuhl Informatik 5 (Information Systems) Prof. Dr. M. Jarke  Packet Filtering I5-FL-0213-5
  • 6. LAYERS Why XMPP?  Standard based solution MOBILIS  Real-time XML based message exchange  Supports multiple sessions per user – alice@example.org/tablet  Various Extension Protocols (XEPs) – Multi-User Chat, Pub Sub, File Transfer  Library availability! Lehrstuhl Informatik 5 (Information Systems) – Smack, Strophe etc. Prof. Dr. M. Jarke I5-FL-0213-6
  • 7. LAYERS Device Discovery ① Personal Device MOBILIS – Instant Messaging on tablet + phone Device Discovery fig.6: Session Split Session Transfer ② Public Device (Kiosk Mode) Session Split Packet Filtering – using a large public display at a metro station ③ Ad-Hoc – including presentation hardware in meeting rooms Lehrstuhl Informatik 5 (Information Systems) Prof. Dr. M. Jarke I5-FL-0213-7
  • 8. LAYERS (1) Personal Device Discovery  via QR codes, NFC MOBILIS  Resources! <!-- Out --> <iq from="alice@mobilis.inf.tu-dresden.de/desktop" Device Discovery to="alice@mobilis.inf.tu-dresden.de" type="get" id="1"> <query xmlns="http://jabber.org/protocol/disco#items"> Session Transfer </query> Session Split </iq> Packet Filtering <!-- In --> <iq type="result" from="alice@mobilis.inf.tu-dresden.de" to="alice@mobilis.inf.tu-dresden.de/desktop" id="123"> <query xmlns="http://jabber.org/protocol/disco#items"> <item jid="alice@mobilis.inf.tu-dresden.de/desktop"/> <item jid="alice@mobilis.inf.tu-dresden.de/phone"/> <item jid="alice@mobilis.inf.tu-dresden.de/tablet"/> </query> </iq> Lehrstuhl Informatik 5 lst.1: Querying own resources (Information Systems) Prof. Dr. M. Jarke I5-FL-0213-8
  • 9. LAYERS (2) Public Device Discovery  standalone device MOBILIS  XMPP daemon Device Discovery  using as personal device Session Transfer  remote login mechanism Session Split Packet Filtering fig.7: Kiosk Device QR discovery Lehrstuhl Informatik 5 (Information Systems) fig.8: Remote Login Prof. Dr. M. Jarke I5-FL-0213-9
  • 10. LAYERS (3) Ad-Hoc Discovery  XEP-0174: Serverless Messaging MOBILIS – over Multicast DNS – TXT Records jid=lightsensor@xmpp.org port.p2pj=5562 status=avail Device Discovery Session Transfer lst.2: Advertising Presence via mDNS Session Split Packet Filtering fig.9: mDNS Service Discovery Lehrstuhl Informatik 5 (Information Systems) fig.10: ad-hoc Light Switch Prof. Dr. M. Jarke I5-FL-0213-10
  • 11. LAYERS Session Transfer  two general approaches MOBILIS – packet logging and replay – application specific bundling Device Discovery Session Transfer <iq from="alice@example.org/mobile“ to="alice@example.org/tablet“ Session Split type="get" id="234"> <query xmlns="mobilis:iq:sessionmobility#sessiontransfer"> Packet Filtering <mechanisms xmlns="mobilis:params:sessiontransfer“> <mechanism>INBAND-XMPP</mechanism> <mechanism >FILES</mechanism > <mechanism>BUNDLE-COMPRESSED-ZIP</mechanism> </mechanisms> </query> </iq> lst.3: Offering Session Transfer Mechanisms Lehrstuhl Informatik 5 (Information Systems) Prof. Dr. M. Jarke I5-FL-0213-11
  • 12. LAYERS Session Split  packet sent to bare JID: delivery depends on server MOBILIS configuration Device Discovery Session Transfer  as fallback, we support client-based message Session Split Packet Filtering forwarding  calls for another requirement: Packet Filtering Lehrstuhl Informatik 5 (Information Systems) Prof. Dr. M. Jarke I5-FL-0213-12
  • 13. LAYERS Packet Filtering  intelligent packet routing MOBILIS  defined by endpoint Device Discovery Session Transfer Session Split fig.11: communication footprint of a LBG Packet Filtering  XEP-0273: Stanza Interception and Filtering Technology (SIFT) – Stanza (Message, IQ or Presence) – Sender/Recipient – Payload Lehrstuhl Informatik 5 (Information Systems) Prof. Dr. M. Jarke I5-FL-0213-13
  • 14. LAYERS Mobilis Framework MOBILIS Lehrstuhl Informatik 5 (Information Systems) Prof. Dr. M. Jarke I5-FL-0213-14
  • 15. LAYERS Conclusion  QR based discovery appreciated MOBILIS  Ad-Hoc – session transfer over local link – towards IoT  Problems – extension implementation & deferrals & experimentals  state transfer using publish-subscribe – as a more general approach Lehrstuhl Informatik 5 (Information Systems) Prof. Dr. M. Jarke I5-FL-0213-15
  • 16. LAYERS Current Tasks & Plans  integrate HTML5 technologies MOBILIS – XMPP over WebSocket – WebRTC  use XEP-0280: Message Carbons for Session Split Case A: Case B: Juliet sends Message to romeo@example.net: Juliet sends Message to romeo@example.net/home: Message is forked and sent to: Message is sent to: romeo@example.net/home romeo@example.net/home romeo@example.net/garden …and forwarded to: romeo@example.net/garden Lehrstuhl Informatik 5 (Information Systems)  commit an OAuth extension to the XMPP community Prof. Dr. M. Jarke I5-FL-0213-16
  • 17. LAYERS OAuth for Remote Login within XMPP  XEP-0235: OAuth Over XMPP – not the right scope MOBILIS  the Google Talk & Windows Live Messenger way… <auth xmlns="urn:ietf:params:xml:ns:xmpp-sasl" mechanism="X-OAUTH2" auth:service="oauth2" xmlns:auth="http://www.google.com/talk/protocol/auth"> base64("0" + user_name + "0" + oauth_token) </auth> lst.4: Google Talk OAuth1 <auth xmlns="urn:ietf:params:xml:ns:xmpp-sasl" mechanism="X-MESSENGER-OAUTH2"> ACCESS_TOKEN </auth> lst.5: Windows Live Messenger OAuth2 they integrate browser-based authentication Lehrstuhl Informatik 5 (Information Systems) 1) https://developers.google.com/talk/jep_extensions/oauth Prof. Dr. M. Jarke I5-FL-0213-17 2) http://msdn.microsoft.com/library/live/hh826554
  • 18. LAYERS Thank you!  Contacts: MOBILIS xmpp://koren@role.dbis.rwth-aachen.de koren@dbis.rwth-aachen.de http://dbis.rwth-aachen.de/cms/staff/koren  Check out the Mobilis framework of TU Dresden http://mobilis.inf.tu-dresden.de The research work described here is partially funded through the LAYERS FP7 ICT Lehrstuhl Informatik 5 (Information Systems) Integrated Project (grant agreement no 318209) of the European Union. Prof. Dr. M. Jarke I5-FL-0213-18
  • 19. LAYERS References [] R. Shacham, H. Schulzrinne, S. Thakolsri, and W. Kellerer, “Session initiation protocol (SIP) session mobility,” RFC 5631, IETF, 2009. MOBILIS [] T. Chang and Y. Li, “Deep shot: a framework for migrating tasks across devices using mobile phone cameras,” in Pro- ceedings of the 2011 annual conference on Human factors in computing systems, 2011. [] J. Hildebrand, J. Moffitt, and P. Saint-Andre, “Stanza inter- ception and filtering technology (SIFT),” 2011. [] P. Saint-Andre, “XEP-0174: Serverless messaging,” http://xmpp.org/extensions/xep- 0174.html, 2008. [] J. Hildebrand, J. Moffitt, and P. Saint-Andre, “XEP-0273: Stanza inter- ception and filtering technology (SIFT),” 2011. [] J. Hildebrand and M. Miller, “XEP-0280: Message Carbons” 2012. Lehrstuhl Informatik 5 (Information Systems) Prof. Dr. M. Jarke I5-FL-0213-19
  • 20. LAYERS fin MOBILIS Lehrstuhl Informatik 5 (Information Systems) Prof. Dr. M. Jarke I5-FL-0213-20