WHY HTTP/2 ?

WHY IS IT SO

COOL ?

CLEMENT DELAFARGUE

@CLEMENTD

2013

Clement DELAFARGUE from Clever Cloud

@clementd on twitter – @divarvel on github

WHO AM I ?

MY DAY TO DAY WORK :

CLEVER CLOUD, MAKE YOUR

APP RUN ALL THE TIME

And learn a lot of things about your code, apps, and good/bad design…

KEEP YOUR APPS ONLINE. MADE WITH

NODE.JS, SCALA, JAVA, RUBY, PHP,

PYTHON, GO…

AND LEARN A LOT OF THINGS ABOUT

YOUR CODE, APPS, AND GOOD/BAD

DESIGN…

WHAT’S THE JOB OF HTTP?

THE SPEC IS MADE TO BE

EXTENSIBLE

BUT THE INTERNET IS

EVOLVING

FASTER FASTER FASTER

// REQUESTS ?

KEEP-ALIVE?

HTTP PIPELINING

THE HACKS WE ARE

DOING EVERYDAY

WITHOUT

THINKING IN

ORDER TO IMPROVE

PERFORMANCES

MULTIPLE DOMAIN NAMES FOR

MULTIPLE STREAMS

STATIC ASSETS DOMAIN NAME FOR FAT

COOKIES PROBLEM MANAGEMENT

COMET/WEBSOCKET/PULLING/SERVER

SENT ENVENT… BIDIRECTIONAL DATA

STREAMS HACKS

SO, WE NEED A NEW VERSION OF HTTP

WHO IS IN CHARGE ?

HTTPBIS

WORKING

GROUP

FIRST

HTTP/2

DRAFT IS

SPDY/3

DRAFT

BUILD ON SOMETHING

EVERYBODY IS AT THE TABLE

SO WHAT IS IN THE BOX ?

HTTP/2 IS A BINARY

PROTOCOL

COMPRESSION + SSL UNABLE

TO READ ANYTHING

WIRESHARK FOR ALL

PUT SOME STEAMS IN ONE

CONNECTION

STREAMS

~ 1 HTTP/1 REQUEST = 1 HTTP/2 STREAM

STREAMS ARE BUILT

OF FRAMES

FRAMES

Content a.html #1

Content dog.gif #1

Content a.html #2

Content dog.gif #2

Content a.html #4

Content a.html #3

Content cat.gif #1

Content dog.gif #4

…

BASICALLY

connection

streams

frames

BINARY GOODNESS =>

FRAMING IS EASY

KILL MULTIPART $*%Ù£

FORMAT

PUSH FROM THE SERVER A RESOURCE

TO THE CACHE

STREAMS PRIORITY

HEADERS

COMPRESSIONS

HPACK

*new RFC*

HEADERS

PERSISTENCE

FOCUS ON WEB

PERFORMANCES

TRANSITION

URLS

CANNOT

CHANGE

HOW TO UPDATE THE

WEB ?

HTTP

&

HTTPS

NEGOTIATE

A

PROTOCOL

ELEVATION

HTTP/1 BUILD IN METHOD

Upgrade: header

Code 101 Switching

WORKFLOW

WORKFLOW

IT’S STILL SLOW

ENCRYPT

THE WEB :

TLS

NEGOTIATE

TLS

VERSION

AND

CIPHER…

NEGOTIATE THE PROTOCOL AT

THE SAME TIME AS THE

ENCRYPTION NEGOTIATION

NPN (CLIENT)

&

ALPN (SERVER)

IS IT FOR

REAL?

LOOKS LIKE

IP V6

STORY?

MORE SPDY STORY

DRAFT – 14 / 15

- Firefox

- Chrome

- cURL

- IE (oh yeah)

- …

- Google

- Twitter

- Akamai

- ….

BENCH

CLEVER CLOUD POV

WORKING ON THIS

Client http2

reverse proxy http2

your app : http1

ALL THE

GOODNESS OF

HTTP2 IN

YOUR HTTP1

APP FOR FREE

:-)

WHY IT’S

SO COOL?

PERFORMANCES

REMOVE ALL THE SHITTY

HACKS

EXPLORE NEW POSSIBILITIES

IMPROVE THE USERS XP

I’m @clementd on twitter

I’m the CTO of

A PaaS provider, give it a try

;-)

THX FOR LISTENING

& QUESTIONS TIME