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Building Living Web Applications with HTML5 WebSockets

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Peter Moskovits
Peter Moskovits
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Building  Living  Web   ApplicaEons  with     HTML5  WebSockets   Creators  of  HTML5  WebSocket   WebSocket  Gateway   High  Performance   Enterprise  Support   Peter  Moskovits  -­‐  @pmoskovi   Developer  Evangelist   1   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
Agenda   •  Is  There  a  Problem?   •  How  Serious  is  the  Problem?   •  Any  Hope?   •  Demos     OFFER  BETTER  EXPERIENCE  EVERYWHERE   2   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
Architectural  (R)evoluEon   Client-­‐Server   Full  duplex   Client   Back-­‐end  server   3   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
Architectural  (R)evoluEon   Legacy  Web   Half  Duplex   Web   Browser   Web   Server   4   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
Architectural  (R)evoluEon   Legacy  Web   Half  Duplex   Full  duplex   Web   Browser   Web   Middleware   Back-­‐end     Tier   server   5   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
HTTP:  Polling  &  Long  Polling   I  want  Desktop-­‐ like  InteracEons   6   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
A  Parallel  Universe  Without  Mailman   7   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
HTTP:  Polling  &  Long  Polling   HTTP   •  Was  designed  to  serve  sta3c  documents   •  Half  duplex,  high  latency   •  Overhead:  800-­‐2000  bytes   •  Complex  architecture:  plugins,  polling,  legacy  applica3on  servers   •  Expensive  to  "Webscale"  applica3ons   8   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
HTTP  Overhead   788  bytes  +  1  byte   9   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
Workarounds  and  Hacks   AJAX:  Asynchronous  JavaScript  and  XML   Lack  of  standard  implementa3on   Used  for  building  highly  interac3ve  Web  apps   Comet  adds  lots  of  complexity   Content  can  change  without  full  page  refresh   User-­‐perceived  low  latency   "Real-­‐3me"  o`en  achieved  using  polling  and   long-­‐polling   10   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
Workarounds  and  Hacks   11   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
HTML5  WebSocket   §  Extends  TCP  across  the  Web   •  Full-­‐duplex,  single  socket,  very   low  overhead   •  Shares  port  with    HTTP  (80/443)   •  Enables  new  classes  of   networked  apps   §  W3C  API  (JavaScript)   §  IETF  Protocol   12   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
Architectural  (R)evoluEon   Legacy  Web   Half  Duplex   Full  duplex   Web   Browser   Web   Middleware   Back-­‐end     Tier   server   13   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
Architectural  (R)evoluEon   Living  Web   WebSocket   Full  duplex   Web   WebSocket  Server   Back-­‐end     server   14   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
Legacy  Web   Half  Duplex   Full  duplex   Web   Browser   Web   Middleware   Back-­‐end     Tier   server   Living  Web   WebSocket   Full  duplex   Web   WebSocket  Server   Back-­‐end     server   16   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
Browser  Support   17   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
Can  I  Use?   caniuse.com   18   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
Can  I  Use?   19   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
Can  I  Use?   websocketstest.com   20   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
How  Can  I  Use?   21   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
How  Can  I  Use?   22   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
The  WebSocket  Handshake   23   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
WebSocket  Frames   §  Only  a  few  header  bytes   §  Data  may  be  text  or  binary   §  Frames  from  client  to  server  are  masked  (XORed  w/   random  value)  to  avoid  confusing  proxies   24   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
InspecEng  WebSocket  Frames   Available  today  in  Chromium  and  Chrome  Canary   25   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
Demo!   Inspec,ng  WebSocket   Frames   26   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
27   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
28   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
Got  WebSockets  –  Now  What?   29   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
A  New  World   30   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
Build  Highly  Scalable  Web  Messaging  Apps     31   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
Extend  the  Reach  of     Your  Rich  Business  Protocols  to  the  Web   Living  Web   JMS,  AMQP,  XMPP/WebSocket   JMS,  AMQP,  XMPP/TCP   Web   Kaazing   Back-­‐end     WebSocket  Gateway   server   32   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
Demos!   33   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
Presso:  WebSocket  Powered  Social  HTML5  PresentaEon  Tool   34   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
Demos!   35   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
AddiEonal  Resources   kaazing.com/download   The  Zinger:    blog.kaazing.com   Pro  HTML5  Programming  Guide     More  Demos  &  Content     •  kaazing.com/demo   •  websocket.org   •  kaazing.com/about/collateral     Kaazing  University   •  HTML5  Fast  Track     •  HTML5  Mobile  Mastery   •  Kaazing  Master  Class       Rich  Real-­‐Time  User  Experience   36   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
37   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  

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Building Living Web Applications with HTML5 WebSockets

  • 1. Building  Living  Web   ApplicaEons  with     HTML5  WebSockets   Creators  of  HTML5  WebSocket   WebSocket  Gateway   High  Performance   Enterprise  Support   Peter  Moskovits  -­‐  @pmoskovi   Developer  Evangelist   1   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 2. Agenda   •  Is  There  a  Problem?   •  How  Serious  is  the  Problem?   •  Any  Hope?   •  Demos     OFFER  BETTER  EXPERIENCE  EVERYWHERE   2   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 3. Architectural  (R)evoluEon   Client-­‐Server   Full  duplex   Client   Back-­‐end  server   3   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 4. Architectural  (R)evoluEon   Legacy  Web   Half  Duplex   Web   Browser   Web   Server   4   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 5. Architectural  (R)evoluEon   Legacy  Web   Half  Duplex   Full  duplex   Web   Browser   Web   Middleware   Back-­‐end     Tier   server   5   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 6. HTTP:  Polling  &  Long  Polling   I  want  Desktop-­‐ like  InteracEons   6   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 7. A  Parallel  Universe  Without  Mailman   7   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 8. HTTP:  Polling  &  Long  Polling   HTTP   •  Was  designed  to  serve  sta3c  documents   •  Half  duplex,  high  latency   •  Overhead:  800-­‐2000  bytes   •  Complex  architecture:  plugins,  polling,  legacy  applica3on  servers   •  Expensive  to  "Webscale"  applica3ons   8   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 9. HTTP  Overhead   788  bytes  +  1  byte   9   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 10. Workarounds  and  Hacks   AJAX:  Asynchronous  JavaScript  and  XML   Lack  of  standard  implementa3on   Used  for  building  highly  interac3ve  Web  apps   Comet  adds  lots  of  complexity   Content  can  change  without  full  page  refresh   User-­‐perceived  low  latency   "Real-­‐3me"  o`en  achieved  using  polling  and   long-­‐polling   10   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 11. Workarounds  and  Hacks   11   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 12. HTML5  WebSocket   §  Extends  TCP  across  the  Web   •  Full-­‐duplex,  single  socket,  very   low  overhead   •  Shares  port  with    HTTP  (80/443)   •  Enables  new  classes  of   networked  apps   §  W3C  API  (JavaScript)   §  IETF  Protocol   12   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 13. Architectural  (R)evoluEon   Legacy  Web   Half  Duplex   Full  duplex   Web   Browser   Web   Middleware   Back-­‐end     Tier   server   13   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 14. Architectural  (R)evoluEon   Living  Web   WebSocket   Full  duplex   Web   WebSocket  Server   Back-­‐end     server   14   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 15. Legacy  Web   Half  Duplex   Full  duplex   Web   Browser   Web   Middleware   Back-­‐end     Tier   server   Living  Web   WebSocket   Full  duplex   Web   WebSocket  Server   Back-­‐end     server   16   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 16. Browser  Support   17   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 17. Can  I  Use?   caniuse.com   18   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 18. Can  I  Use?   19   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 19. Can  I  Use?   websocketstest.com   20   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 20. How  Can  I  Use?   21   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 21. How  Can  I  Use?   22   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 22. The  WebSocket  Handshake   23   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 23. WebSocket  Frames   §  Only  a  few  header  bytes   §  Data  may  be  text  or  binary   §  Frames  from  client  to  server  are  masked  (XORed  w/   random  value)  to  avoid  confusing  proxies   24   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 24. InspecEng  WebSocket  Frames   Available  today  in  Chromium  and  Chrome  Canary   25   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 25. Demo!   Inspec,ng  WebSocket   Frames   26   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 26. 27   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 27. 28   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 28. Got  WebSockets  –  Now  What?   29   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 29. A  New  World   30   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 30. Build  Highly  Scalable  Web  Messaging  Apps     31   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 31. Extend  the  Reach  of     Your  Rich  Business  Protocols  to  the  Web   Living  Web   JMS,  AMQP,  XMPP/WebSocket   JMS,  AMQP,  XMPP/TCP   Web   Kaazing   Back-­‐end     WebSocket  Gateway   server   32   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 32. Demos!   33   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 33. Presso:  WebSocket  Powered  Social  HTML5  PresentaEon  Tool   34   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 34. Demos!   35   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 35. AddiEonal  Resources   kaazing.com/download   The  Zinger:    blog.kaazing.com   Pro  HTML5  Programming  Guide     More  Demos  &  Content     •  kaazing.com/demo   •  websocket.org   •  kaazing.com/about/collateral     Kaazing  University   •  HTML5  Fast  Track     •  HTML5  Mobile  Mastery   •  Kaazing  Master  Class       Rich  Real-­‐Time  User  Experience   36   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.  
  • 36. 37   Copyright  ©  2012  Kaazing  Corpora3on.  All  Rights  Reserved.