×
Copy
Open
Link
Embed
Share
Beginning
This slide
Copy link URL
Copy link URL
Copy iframe embed code
Copy iframe embed code
Copy javascript embed code
Copy javascript embed code
Share
Tweet
Share
Tweet
Slide 1
Slide 1 text
WEBSOCKETS
Slide 2
Slide 2 text
• phpBB • Symfony2 • Silex • Composer igorw @igorwesome
Slide 3
Slide 3 text
No content
Slide 4
Slide 4 text
WEBSOCKETS
Slide 5
Slide 5 text
WEB
Slide 6
Slide 6 text
Application HTTP Presentation TCP Session TCP Transport TCP Network IP Data Link Physical
Slide 7
Slide 7 text
Application HTTP Presentation TCP Session TCP Transport TCP Network IP Data Link Physical
Slide 8
Slide 8 text
HTTP
Slide 9
Slide 9 text
client
Slide 10
Slide 10 text
request client
Slide 11
Slide 11 text
reponse client request
Slide 12
Slide 12 text
GET / HTTP/1.1 Host: igor.io >
Slide 13
Slide 13 text
HTTP/1.1 200 OK Server: nginx Content-Type: text/html; charset=UTF-8 Transfer-Encoding: chunked Connection: keep-alive cache-control: no-cache date: Mon, 14 May 2012 10:08:23 GMT Hello World! GET / HTTP/1.1 Host: igor.io > <
Slide 14
Slide 14 text
THIS IS A GOOD THING
Slide 15
Slide 15 text
BUT
Slide 16
Slide 16 text
NOT FOR EVERYTHING
Slide 17
Slide 17 text
UNIDIRECTIONAL
Slide 18
Slide 18 text
No content
Slide 19
Slide 19 text
LATENCY
Slide 20
Slide 20 text
LATENCY KEEP-ALIVE PIPELINING SPDY
Slide 21
Slide 21 text
STATELESS
Slide 22
Slide 22 text
Application HTTP Presentation TCP Session TCP Transport TCP Network IP Data Link Physical
Slide 23
Slide 23 text
Application HTTP Presentation TCP Session TCP Transport TCP Network IP Data Link Physical
Slide 24
Slide 24 text
WEBSOCKETS
Slide 25
Slide 25 text
SOCKETS
Slide 26
Slide 26 text
WEBSOCKETS
Slide 27
Slide 27 text
PROTOCOL API
Slide 28
Slide 28 text
THE WEBSOCKET PROTOCOL
Slide 29
Slide 29 text
browser
Slide 30
Slide 30 text
No content
Slide 31
Slide 31 text
GET /foo HTTP/1.1 Host: localhost Connection: Upgrade Upgrade: websocket Sec-WebSocket-Key: ZQqy3/N7NzBwMak/2+aFIQ== Sec-WebSocket-Origin: ws://localhost:8080/foo Sec-WebSocket-Version: 13 >
Slide 32
Slide 32 text
GET /foo HTTP/1.1 Host: localhost Connection: Upgrade Upgrade: websocket Sec-WebSocket-Key: ZQqy3/N7NzBwMak/2+aFIQ== Sec-WebSocket-Origin: ws://localhost:8080/foo Sec-WebSocket-Version: 13 HTTP/1.1 101 Switching Protocols Upgrade: websocket Connection: Upgrade Sec-WebSocket-Accept: p5XeX6xlMI7WflwlN4B8OFqdWPA= > <
Slide 33
Slide 33 text
• Handshake / Upgrade • TCP + framing • Proxies • Supports TLS (SSL)
Slide 34
Slide 34 text
No content
Slide 35
Slide 35 text
RFC 6455
Slide 36
Slide 36 text
COMET
Slide 37
Slide 37 text
THE WEBSOCKET API
Slide 38
Slide 38 text
browser
Slide 39
Slide 39 text
No content
Slide 40
Slide 40 text
var ws = new WebSocket('ws://example.org:8080/updates'); ws.onopen = function () { ws.send('hello'); }; ws.onmessage = function (event) { console.log(event.data); };
Slide 41
Slide 41 text
JS INTERFACE • WebSocket • onopen • onmessage • onerror • onclose • binaryType • MessageEvent • data
Slide 42
Slide 42 text
browser API PROTOCOL
Slide 43
Slide 43 text
USE CASES •Games •Notifications •Collaboration •Statistics •Chat
Slide 44
Slide 44 text
4.0+ (2009) 6.0+ (2011) 10.70+ (2012) 5.0+ (2010) 10+ (2012)
Slide 45
Slide 45 text
• transport abstraction (fallbacks) • broadcasting, reconnection, serialization, other stuff • monolithic! (and almost trying to fix it)
Slide 46
Slide 46 text
SOCKJS
Slide 47
Slide 47 text
TRANSPORTS • Native WebSocket • Streaming • Polling
Slide 48
Slide 48 text
TRANSPORTS • Native WebSocket (RFC6455, hixie-76, hybi-10) • Streaming (xhr-streaming, xdr-streaming, iframe-eventsource, iframe-htmlfile) • Polling (xhr-polling, xdr-polling, iframe-xhr-polling, jsonp- polling)
Slide 49
Slide 49 text
No content
Slide 50
Slide 50 text
ASYNC STACK Connect (fix it, sencha) Express SockJS
Slide 51
Slide 51 text
ASYNC STACK ? ? SockJS
Slide 52
Slide 52 text
ASYNC STACK EventMachine ? ? SockJS
Slide 53
Slide 53 text
ASYNC STACK ? ? SockJS
Slide 54
Slide 54 text
Y U NO PHP?
Slide 55
Slide 55 text
SYNC STACK Application
Slide 56
Slide 56 text
SYNC STACK Application
Slide 57
Slide 57 text
ASYNC Connect (fix it, sencha) Express SockJS SYNC Application
Slide 58
Slide 58 text
No content
Slide 59
Slide 59 text
No content
Slide 60
Slide 60 text
*MQ
Slide 61
Slide 61 text
*MQ Sync Async
Slide 62
Slide 62 text
DEMO
Slide 63
Slide 63 text
•Pub/Sub •RPC MESSAGING PATTERNS
Slide 64
Slide 64 text
No content
Slide 65
Slide 65 text
No content
Slide 66
Slide 66 text
NULLMQ
Slide 67
Slide 67 text
DEBUGGING •printf •chrome inspector •wssh •ngrep •zmqc
Slide 68
Slide 68 text
RECAP • Use SockJS • Polyglot is the future • Learn from the MQs
Slide 69
Slide 69 text
LINKS • tools.ietf.org/html/rfc6455 • dev.w3.org/html5/websockets • developer.mozilla.org/en/WebSockets (fix it) • sockjs.org • github.com/igorw/websockets-talk
Slide 70
Slide 70 text
github.com/igorw/websockets-talk
Slide 71
Slide 71 text
CREDITS • thenounproject.com • stopwatch
Slide 72
Slide 72 text
Questions? @igorwesome speakerdeck.com /u/igorw joind.in/6421