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HTTP/2 comes to Java (Dec. 2015 version)
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David Delabassee
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Latest iteration of my HTTP/2 deck, presented at JCConf (Taipei-Taiwan) end of 2015
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HTTP/2 comes to Java (Dec. 2015 version)
1.
HTTP/2&comes&to&Java!& JCConf&Taiwan&2015 David&Delabassee& @delabassee& Oracle Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved.* 1
2.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. @delabassee
3.
Safe*Harbor*Statement The* following* is*
intended* to* outline* our* general* product* direction.* It* is* intended* for* information* purposes* only,* and* may* not* be* incorporated* into* any* contract.* It* is* not* a* commitment*to*deliver*any*material,*code,*or*functionality,*and*should*not*be*relied*upon* in*making*purchasing*decisions.*The*development,*release,*and*timing*of*any*features*or* functionality*described*for*Oracle’s*products*remains*at*the*sole*discretion*of*Oracle. Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 3
4.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. @delabassee Agenda Why*HTTP/2?* HTTP/2* HTTP/2*and*Java*EE* HTTP/2*and*Java*SE* Summary
5.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. @delabassee Agenda Why*HTTP/2?* HTTP/2* HTTP/2*and*Java*SE* HTTP/2*and*Java*EE* Summary
6.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 6 @delabassee Data*Never*Sleeps*2.0 https://www.domo.com/learn/dataRneverRsleepsR2
7.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 7 @delabassee HTTP*1.x 1991*
1996* 1999* 2009* 2015* HTTP/0.9* HTTP/1.0* HTTP/1.1* SPDY* HTTP/2.0*
8.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 8 @delabassee
9.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 9 @delabassee
10.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 10 @delabassee
11.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 11 @delabassee
12.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 13 @delabassee Today index.html style1.css style2.css .& .& .& script1.js script9.js pic1.jpg pic8.jpg .& .& .& photo1.png photo2.png .& .& .&
13.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 14 @delabassee google.fr*(1st)* •
3*HTTP*Requests* • 21.355*bytes* - 1*HTML* - 1*image* - 1*.js Top*.FR*examples lefigaro.fr*(15th)* • 140*HTTP*Requests* • 2.736.562*bytes* - 1*HTML* - 130*images* - 6*.js* - 2*.css*
14.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 15 @delabassee •
If*a*page*takes*longer*than*4*sec*to*load,*1/4*people*abandons*that*page*(1)* • 57%*of*consumers*will*abandon*a*page*that*takes*longer*than*3*sec*to*load*(2)* • Page*load*slowdown*of*1*sec*could*cost*Amazon*$1.6*billion*in*sales*a*year*(1)* • Slowing*search*results*by*0.4*sec,*Google*could*lose*8*million*searches*per*day*(1) Latency*Vs.*Conversion*Rate Time&is&Money! (1)*http://www.fastcompany.com/1825005/howRoneRsecondRcouldRcostRamazonR16RbillionRsales* (2)*RadView*Spring*2015*State*of*the*Union:*Ecommerce*Page*Speed*&*Web*Performance
15.
@delabasseeCopyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. HTTP*1.1 HeadCofCLine&blocking 16 Client Server index.html index.html style1.css* script.js* ... style1.css* script.js* ...
16.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 17 @delabassee HTTP*1.1
17.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 18 @delabassee File*Concatenation*and*Image*Sprites •
Modern*web*page*consists*of*+90*resources*fetched*from*15*distinct* hosts*(http://httparchive.org)* • TCP*Efficiency*Improves*with*Larger*Files* • Shoving*more*than*one*logical*file*into*one*physical*file
18.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 19 @delabassee File*Concatenation*and*Image*Sprites
19.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 20 @delabassee HTTP*1.1 Workaround&C&Domain&Sharding
20.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 21 @delabassee Asset*inlining …* <img"src="data:image/gif;base64,R0lGODlhEAAOexs3eeALMAAOazToeHh0tLS/ 7LZv0jvb29tf3Ubge8WSLrhf3kdbW1mxsjkhfkjfhGHhcjGDSHJUYgJvhgtyrHgfGfHy t56HGfGH56ge8WSLf6GGHhfkjfhhfkjfhpBREzxvt6QAA4lsjkhfkjfhdxwqBnuIoYty GhBKoOjJj6GGHvvhdsbxus38GV3pBREzxvt6QAA4lsjkhfkjfhdxwqBnuIoYtyGhBKoO jJj6GGHvvhdsbxus38GV3vvhdsbxusbasbPmfyH5BAAAjAAAALAAfhGHhcjAAAAQAA4l sjkhfkjfhGHhcjGDSHJUYgJvhgtyrHgfhfkjfhpBREzxvt6QAA4lsjkhfkjfhdxwqBnu IoYtyGhBKoOjJj6GGHvvhdsbxus38GV3GfHyt56HGfGH56ge8WsjkhfkjfhGHhcjGDSH JUYgJvhgtyrHgfGfHyt56HGfGH56gebxus38G8WSLf6GGHvvhdsbxusbaSLf6GGHvvhd sbxusbaOiQA4lsjkhfkjf4lsjkhfkjf4lsjbxus38GkhfkjfhfkjfhpBREzxvt6QAA4l sjkhfkjfhdxwqBnuIoYtyGhBKoOjJj6GGHvvhdsbxus38GV3DcPjjBceXsplojj…”"/>" …
21.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 22 @delabassee •
HTTP*uses*TCP*poorly* - HTTP:*short*and*bursty*flows*Vs.*TCP:*optimized*for*longRlived*flows* • Solutions* - Sprites* - Domain*sharding* - Assets*Inlining* - File*concatenations* - … HTTP/1.1*circa*1999 Problems&Vs&Solutions 1991& 1996& 1999& 2009& 2015& HTTP/0.9& HTTP/1.0& HTTP/1.1& SPDY& HTTP/2.0&
22.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. @delabassee Agenda Why*HTTP/2?* HTTP/2* HTTP/2*and*Java*SE* HTTP/2*and*Java*EE* Summary
23.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. @delabassee HTTP/2 • Jan*2015* •
Feb*2015* • May*2015 24 Enabled*by*default*in*FireFox*(35)*and*Chrome*(40)* IESG*approved*HTTP/2* HTTP/2*in*10%*of*all*HTTP*responses*(FireFox)* HTTP/2*used*in*18%*of*global*traffic*(Google)* RFC*7540**“Hypertext*Transfer*Protocol*Version*2”* RFC*7541**“HPACK:*Header*Compression*for*HTTP/2”**
24.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 25 @delabassee Browsers*support …&as&of&November&2015 http://caniuse.com/http2*
25.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved.* @delabassee26 HTTP/2*Features • Binary*Framing*over*single*TCP*connection* •
Request/Response*multiplexing* • Stream*Prioritization* • Server*Push* • Upgrade*from*HTTP*1.1* • Header*Compression* • Preserve*HTTP*semantic
26.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved.* @delabassee26 HTTP/2*Features • Binary*Framing*over*single*TCP*connection* •
Request/Response*multiplexing* • Stream*Prioritization* • Server*Push* • Upgrade*from*HTTP*1.1* • Header*Compression* • Preserve*HTTP*semantic
27.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 27 @delabassee HTTP/2 •
Fully*biRdirectional* – Connection A*TCP*socket* – Message* A*logical*HTTP*message,*such*as*a*request*or*a*response** – Stream A*biRdirectional*“channel”*within*a*connection,*carry*one*or*more*message* – Frame The*smallest*unit*of*communication*in*HTTP/2 Lets&you&do&more&things&with&a&single&TCP&connection
28.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 28 @delabassee HTTP/2 Connections,&Streams,&Messages,&Frames
29.
@delabasseeCopyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. Binary*Frames • Frames* - HEADERS,*DATA,*PRIORITY,*RST_STREAM,*SETTINGS,*PUSH_PROMISE,*PING,* GOAWAY,*WINDOW_UPDATE,*CONTINUATION* -
Prioritisation,*Flow*Control,*Server*Push,*…** • Single*TCP*Connection 29 POST*/upload*HTTP/1.1* Host:*www.test.com* ContentRType:*application/json* ContentRLength:*15* {“name”:“duke”} HTTP&1.1 HTTP/2 HEADERS&frame DATA&frame
30.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 30 @delabassee HTTP/2*Binary*Framing GET*/index.html*HTTP/1.1 Host:*example.com Accept:*text/html Example&1 HEADERS ****+*END_STREAM ****+*END_HEADERS ********:method:*GET ********:scheme:*http ********:path:*/index.html ********:authority:*example.org ********accept:*text/html
31.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 31 @delabassee HTTP/2*Binary*Framing HTTP/1.1*200*OK ContentRLength:*84 ContentRType:*text/html <!doctype*html>* <head>* <meta*charset=utfR8>* </head>* <body>Hello*World</body>* </html> Example&2 HEADERS ****R*END_STREAM ****+*END_HEADERS ********:status:*200 ********contentRlength:*84 ********contentRtype:*text/html DATA ****+*END_STREAM <!doctype*html>…
32.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 32 @delabassee Multiplexing
33.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 33 @delabassee Stream*Prioritization •
Stream*Dependency*in*HEADERS*Frame* • PRIORITY*frame*type* • An*additional*40*bytes* - Stream*id*(31)* - Weight*(8):*[1,*256]** - Exclusive*bit*(1)* • Only*an*advice
34.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. @delabassee#HTTP/2 Server*Push /index.html***stream*1* /style.css********stream*2* /logo.gif*********stream*4 Client Server stream&1& HEADERS stream&1& DATA stream&2&&&& PROMISE stream&4& PROMISE •
No*JavaScript*API!
35.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 35 @delabassee Header*Compression HPack
36.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 36 @delabassee Upgrade*from*HTTP*1.1 •
HTTP* - Port*80* - HTTP*Upgrade*to*“h2c”*(101*Switching*Protocol)* • HTTPS*(*)* - Application*Layer*Protocol*Negotiation*(ALPN)* - Next*Protocol*Negotiation*(NPN)* (*)*TLS*is*not*mandatory
37.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. @delabassee37 &Demo?
38.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. @delabassee Agenda Why*HTTP/2?* HTTP/2* HTTP/2*and*Java*SE* HTTP/2*and*Java*EE* Summary
39.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. @delabassee Java*9*Support*for*HTTP/2 • JEP*110* -
http://openjdk.java.net/jeps/110* • Supports*both*HTTP*1.1*and*2* • Easy*to*use*API* • Covers*only*the*most*common*use*cases* • Synchronous*&*Asynchronous 39#HTTP/2
40.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. @delabassee Java*9 HttpClient"client"="HttpClient.create()" " """"""""""""""""""""""""""".sslContext(ctx)" "
""""""""""""""""""""""""""".followRedirects(HttpRedirect.ALWAYS)" """""""""""""""""""""""""""""".executorService(…)" " """"""""""""""""""""""""""".build();" HttpRequest.Builder"builder"="client.request(new"URI(target))" """""""""""""""""""""""""""""""""""".body(noBody());" HttpResponse"response"="builder.GET().send();" //"do"something"with"the"response…" 40
41.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. @delabassee Java*9 //"HttpRequest"builder"from"the"default"HttpClient" HttpResponse"response"="HttpRequest.create(new"URI("http://www.abc.be"))" """"""""""""""""""""""""""""""""""".send(HttpRequest.noBody());" String"responseBody"="response.body(HttpResponse.asString());" response"="HttpRequest.create(new"URI("http://www.abc.be"))" """""""""""""""""""""".body(fromString("param1=Abc"))" """""""""""""""""""""".post()A AAAAAAAAAAAAAAAAAAAAAA.send();" … 41
42.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. @delabassee Java*9 HttpClient"cl"="HttpClient.create()" """""""""""""""""""""""""".proxy("http",proxAd).proxy("https","proxAd)" """""""""""""""""""""""""".sslContext(ctx)" """""""""""""""""""""""""".build();" CompletableFuture<String>"compFut"="cl.request(uri)" " "
" " " " " " "".body(noBody())" " """"""""""""""""""""""".GET()" " """"""""""""""""""""""".sendAsync()" """""""""""""""""""""""""".thenCompose((HttpResponse"response)"l>"{" """"""""""""""""""""""""""""""""""return"response.bodyAsync(asString());" """"""""""""""""""""""""""});" String"body"="compFut.get(5,"TimeUnit.SECONDS);" … 42
43.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. @delabassee Agenda Why*HTTP/2?* HTTP/2* HTTP/2*and*Java*SE* HTTP/2*and*Java*EE* Summary
44.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 44 @delabassee •
Request/Response*multiplexing* • Binary*Framing* • Stream*Prioritization* • Server*Push* • Header*Compression* • Upgrade*from*HTTP*1.1* – ALPN* – 101*Switching*Protocols HTTP/2
45.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 45 @delabassee •
Request/Response*Multiplexing* • Binary*Framing* • Stream*Prioritization* • Server*Push* • Header*Compression* • Upgrade*from*HTTP*1.1* – ALPN* – 101*Switching*Protocols Features&to&be&Exposed&in&the&Servlet&API Servlet*4
46.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 46 @delabassee •
Push*resource*to*client*for*a*given*url*and*headers* • May*add*callback*for*completion*or*error*of*a*push* • Not*a*replacement*for*WebSocket Servlet*4.0*R*Server*Push
47.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. PushBuilderAbuilder = baseRequest.getPushBuilder(); builder.addHeader(“X-Pusher",
…); builder.path(aResource) .etag(associated._etag) .lastModified(associated._lastModified) .push(); 47 Server*Push
48.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. @delabassee Agenda Why*HTTP/2?* HTTP/2* HTTP/2*and*Java*SE* HTTP/2*and*Java*EE* Summary
49.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. @delabassee HTTP/2 • Address*the*Limitations*of*HTTP*1.x* -
Improve*ressources*utilization,*performance,*reduce*latency* • “Compatible”*with*HTTP*1.1* - Retain*HTTP*1.1*semantics* - Define*interaction*with*HTTP*1.1* - Undo*your*HTTP*1.1*tricks!!* • “TLS0not0mandatory” 49 Hypertext&Transfer&Protocol&version&2&&&HPACK
50.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. @delabassee HTTP/2*and*Java • JEP*110*brings*HTTP/2*to*Java*SE* •
Servlet*4.0*brings*HTTP/2*to*Java*EE* - Expose*key*features*to*the*API* • Server*Push* • HTTP*1.1*upgrade* • Timing*TBC! 50 Plans
51.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. @delabassee51 &
52.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. @delabassee Resources*(and*credits) • http://http2.github.io* •
http://chimera.labs.oreilly.com/books/1230000000545/ch12.html* • https://java.net/projects/servletRspec/* • http://glassfish.org/adoptajsr* • http://openjdk.java.net/jeps/110 52
53.
Copyright*©*2015,*Oracle*and/or*its*affiliates.*All*rights*reserved. 53
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