Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
WebSockets (jsday)
Search
Igor Wiedler
May 17, 2012
Programming
8
660
WebSockets (jsday)
Igor Wiedler
May 17, 2012
Tweet
Share
More Decks by Igor Wiedler
See All by Igor Wiedler
Redis Bedtime Stories
igorw
1
300
Wide Event Analytics (LISA19)
igorw
4
920
a day in the life of a request
igorw
0
130
production: an owner's manual
igorw
0
160
The Power of 2
igorw
0
280
LISP 1.5 Programmer's Manual: A Dramatic Reading
igorw
0
410
The Moral Character of Software
igorw
1
270
interdisciplinary computing (domcode)
igorw
0
280
miniKanren (clojure berlin)
igorw
1
290
Other Decks in Programming
See All in Programming
testingを眺める
matumoto
1
120
Ruby Parser progress report 2025
yui_knk
1
160
Azure SRE Agentで運用は楽になるのか?
kkamegawa
0
430
WebAssemblyインタプリタを書く ~Component Modelを添えて~
ruccho
1
930
MCPで実現するAIエージェント駆動のNext.jsアプリデバッグ手法
nyatinte
7
960
Vue・React マルチプロダクト開発を支える Vite
andpad
0
100
ワープロって実は計算機で
pepepper
2
1.4k
物語を動かす行動"量" #エンジニアニメ
konifar
14
5.6k
TDD 実践ミニトーク
contour_gara
1
240
フロントエンドのmonorepo化と責務分離のリアーキテクト
kajitack
2
140
CSC305 Summer Lecture 12
javiergs
PRO
0
130
Portapad紹介プレゼンテーション
gotoumakakeru
1
130
Featured
See All Featured
Fireside Chat
paigeccino
39
3.6k
Done Done
chrislema
185
16k
Visualizing Your Data: Incorporating Mongo into Loggly Infrastructure
mongodb
48
9.7k
Build your cross-platform service in a week with App Engine
jlugia
231
18k
Being A Developer After 40
akosma
90
590k
Code Reviewing Like a Champion
maltzj
525
40k
Keith and Marios Guide to Fast Websites
keithpitt
411
22k
Why You Should Never Use an ORM
jnunemaker
PRO
59
9.5k
What's in a price? How to price your products and services
michaelherold
246
12k
The Invisible Side of Design
smashingmag
301
51k
Building Adaptive Systems
keathley
43
2.7k
CoffeeScript is Beautiful & I Never Want to Write Plain JavaScript Again
sstephenson
161
15k
Transcript
WEBSOCKETS
• phpBB • Symfony2 • Silex • Composer igorw @igorwesome
None
WEBSOCKETS
WEB
Application HTTP Presentation TCP Session TCP Transport TCP Network IP
Data Link Physical
Application HTTP Presentation TCP Session TCP Transport TCP Network IP
Data Link Physical
HTTP
client
request client
reponse client request
GET / HTTP/1.1 Host: igor.io >
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 > <
THIS IS A GOOD THING
BUT
NOT FOR EVERYTHING
UNIDIRECTIONAL
None
LATENCY
LATENCY KEEP-ALIVE PIPELINING SPDY
STATELESS
Application HTTP Presentation TCP Session TCP Transport TCP Network IP
Data Link Physical
Application HTTP Presentation TCP Session TCP Transport TCP Network IP
Data Link Physical
WEBSOCKETS
SOCKETS
WEBSOCKETS
PROTOCOL API
THE WEBSOCKET PROTOCOL
browser
None
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 >
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= > <
• Handshake / Upgrade • TCP + framing • Proxies
• Supports TLS (SSL)
None
RFC 6455
COMET
THE WEBSOCKET API
browser
None
var ws = new WebSocket('ws://example.org:8080/updates'); ws.onopen = function () {
ws.send('hello'); }; ws.onmessage = function (event) { console.log(event.data); };
JS INTERFACE • WebSocket • onopen • onmessage • onerror
• onclose • binaryType • MessageEvent • data
browser API PROTOCOL
USE CASES •Games •Notifications •Collaboration •Statistics •Chat
4.0+ (2009) 6.0+ (2011) 10.70+ (2012) 5.0+ (2010) 10+ (2012)
• transport abstraction (fallbacks) • broadcasting, reconnection, serialization, other stuff
• monolithic! (and almost trying to fix it)
SOCKJS
TRANSPORTS • Native WebSocket • Streaming • Polling
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)
None
ASYNC STACK Connect (fix it, sencha) Express SockJS
ASYNC STACK ? ? SockJS
ASYNC STACK EventMachine ? ? SockJS
ASYNC STACK ? ? SockJS
Y U NO PHP?
SYNC STACK Application
SYNC STACK Application
ASYNC Connect (fix it, sencha) Express SockJS SYNC Application
None
None
*MQ
*MQ Sync Async
DEMO
•Pub/Sub •RPC MESSAGING PATTERNS
None
None
NULLMQ
DEBUGGING •printf •chrome inspector •wssh •ngrep •zmqc
RECAP • Use SockJS • Polyglot is the future •
Learn from the MQs
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
github.com/igorw/websockets-talk
CREDITS • thenounproject.com • stopwatch
Questions? @igorwesome speakerdeck.com /u/igorw joind.in/6421