socket, socket.io, node.js, nodejs, js

1. @diego_pacheco
Software Architect | Agile Coach

3. HotSpot(20x faster)
Lars Bak
JIT
Threads Assembler

5. non-blocking i/o VS blocking i/o

6. Http,Tcp,File Bindings
Evented I/O
Good Speed(Performance)
Good for concurrency
Everything Asynchronous
JS Server Side
Runs on Google V8
Supports for Redis & MongoDB
Real time apps with WebSockets(html 5)
Ruby's Event Machine or Python's Twisted

7. Why Socket.io? Why Not WebSockets?

8. Features
Transparent Transport API
Authorization
Timeouts
Heartbeats / Disconnection
Cross Browser + Mobile/Tablets
Reconnection + Buffering
Multiple Sockets with same connection
Modules (session, logger, node2node, mq)

9. Multi-Transport Socket for

10. Select the best transport option:
WebSocket
Adobe® Flash® Socket
AJAX long polling
AJAX multipart streaming
Forever Iframe
JSONP Polling

11. [server.js]

12. [index.html]

13. $ node server.js
info - socket.io started
debug - client authorized
info - handshake authorized 10976962382111866647
debug - setting request GET /socket.io/1/websocket/10976962382111866647
debug - set heartbeat interval for client 10976962382111866647
debug - client authorized for
debug - websocket writing 1::
debug - websocket writing 5:::{"name":"news","args":[{"hello":"world"}]}
{ my: 'data' }

14. [calc.html]

17. $ node calc.js
info - socket.io started
debug - client authorized
info - handshake authorized 19733746072008321086
debug - setting request GET /socket.io/1/websocket/19733746072008321086
debug - set heartbeat interval for client 19733746072008321086
debug - client authorized for
debug - websocket writing 1::
doop event received.
{ va: '10', vb: '21', op: '+' }
debug - websocket writing 5:::{"name":"result","args":[{"result":31}]}

18. Thank You!
@diego_pacheco
Software Architect | Agile Coach