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Ruby in the Browser,[object Object],why, how, and how do we get there?,[object Object],Ilya Grigorik,[object Object],@igrigorik,[object Object]
How many languages are you proficient in?,[object Object],take a few seconds…,[object Object]
…,[object Object],…,[object Object],…,[object Object],…,[object Object]
JavaScript,[object Object],CSS,[object Object],DOM,[object Object],ActionScript,[object Object],Java Applets,[object Object],ActiveX,[object Object],…,[object Object]
Don’t know it, therefore don’t like it,[object Object],Miserable experience with the DOM, hated it,[object Object],(long pause),[object Object],Prototype + JQuery: hey, this is not bad,[object Object],Writing pure JS FF extension – fun!,[object Object],Maintaining extension + debug: it’s ok…,[object Object],(personal) conclusion: it’s a great language ,[object Object],(personal) JavaScript retrospective,[object Object],in 6 acts…,[object Object]
JavaScript as a monopoly?,[object Object],they (ECMA) are colluding against us!,[object Object]
…,[object Object],…,[object Object],…,[object Object],Diversity is good!,[object Object],experimentation leads to innovation,[object Object],…,[object Object]
50+ Ruby implementations,[object Object],credit to Konstantin Haase - @rkh,[object Object]
Case in point…,[object Object]
Disclaimer: I work for Google. I have no affiliation to NaCl, Chrome, … teams. All opinions are my own, etc… :-) ,[object Object]
Ruby in the browser?,[object Object],that would be nice…,[object Object]
Ruby/Python/X/Y/Z in the browser,[object Object],would be even better!,[object Object]
http://tryruby.org/,[object Object]
require 'em-synchrony',[object Object],require 'em-synchrony/em-http',[object Object],require 'em-http/middleware/json_response',[object Object],TRYRUBY = 'http://tryruby.org/levels/1/challenges/0/play’,[object Object],EM::HttpRequest.use EM::Middleware::JSONResponse,[object Object],EM.synchrony do,[object Object],  r =EM::HttpRequest.new(TRYRUBY).put :body => {:cmd => '1+1'},[object Object],  puts r.response['output'] # => 2,[object Object],  r =EM::HttpRequest.new(TRYRUBY).put :body => {:cmd => 'RUBY_VERSION'},[object Object],  puts r.response['output'] # => 1.9.2,[object Object],end,[object Object],Server-side sessions,[object Object],not really in your browser…,[object Object]
require 'em-synchrony',[object Object],require 'em-synchrony/em-http',[object Object],require 'em-http/middleware/json_response',[object Object],TRYRUBY = 'http://tryruby.org/levels/1/challenges/0/play’,[object Object],EM::HttpRequest.use EM::Middleware::JSONResponse,[object Object],EM.synchrony do,[object Object],  r =EM::HttpRequest.new(TRYRUBY).put :body => {,[object Object],:cmd => ’”a” * (2**25)’,[object Object],},[object Object],  puts r.response['output'] # => ...,[object Object],end,[object Object],So, how much RAM can we claim?,[object Object],security is always an issue…,[object Object]
In the browser, for real..,[object Object],anyone crazy enough to try?,[object Object]
http://visitmix.com/work/gestalt/,[object Object]
<script type="text/ruby">,[object Object],defonclick(s,e),[object Object],window.alert"Hello, World!",[object Object],  end,[object Object],document.say_hello.attach_event('onclick',,[object Object],    System::EventHandler [,[object Object],    System::Windows::Browser::HtmlEventArgs,[object Object],    ].new(method(:onclick)),[object Object],),[object Object],</script>,[object Object],How awesome is that?,[object Object],IronRuby, IronPython, …,[object Object],Micorosoft’s Silverlight + DLR,[object Object],sweet!,[object Object]
JavaScript,[object Object],CSS,[object Object],DOM,[object Object],Gestalt,[object Object],IronPython,[object Object],IronRuby,[object Object],C#,[object Object],F#,[object Object],Dynamic Language Runtime,[object Object]
Is there a future for Silverlight?,[object Object],How about IronRuby?,[object Object],I hope so.. x2,[object Object]
Browser plugins,[object Object],a brief detour…,[object Object]
Setting: Live demo to Jim Clark (CEO of Netscape),[object Object],Links to any file other than an image cause the user to be prompted to download the file.. However, when a user clicked on a link to a PDF file, the file instantly opened within the browser window, seamlessly blending HTML and PDF consumption!,[object Object],Clark: wow, who provided the support on our side?,[object Object],Adobe:  we reverse-engineered it… ,[object Object],Inception,[object Object]
[object Object]
Implemented / in-use by most browsers to this day
Plugin registers a content-type, ex: music/mp3
Browser encounters the file, delegates to plugin
Ex: Flash, Silverlight, Quicktime, Acrobat, etc..NPAPI is born,[object Object],Netscape Plugin API,[object Object]
JavaScript,[object Object],CSS,[object Object],DOM,[object Object],NPAPI,[object Object],Flash,[object Object],Silverlight,[object Object],…,[object Object],External binaries,[object Object]
NPAPI,[object Object],[object Object]
Full access to your OS
Full access to your filesystem
…
Full access to wreck havocSecurity nightmare,[object Object],or we why we love to hate plugins,[object Object],Flash,[object Object],Silverlight,[object Object],…,[object Object],External binaries,[object Object]
Google Chrome,[object Object],WebKit, V8, NaCl, speed…,[object Object],* soon to be #2,[object Object]
Process,[object Object],#1,[object Object],Process,[object Object],#2,[object Object],Process,[object Object],#3,[object Object],Tabs are:,[object Object],[object Object]
Own security sandbox per tabFlash Movie,[object Object],Security ???,[object Object],Security & Isolation,[object Object],are a big focus in Chrome,[object Object]
JavaScript,[object Object],CSS,[object Object],DOM,[object Object],NPAPI,[object Object],Flash,[object Object],Silverlight,[object Object],…,[object Object],External binaries,[object Object]
JavaScript,[object Object],CSS,[object Object],DOM,[object Object],Pepper (PPAPI),[object Object],Pepper bridge,[object Object],Sandboxed plugin,[object Object],NaCl,[object Object],NaCl,[object Object],Plugin,[object Object],Plugin,[object Object],NaCl,[object Object],Native Client,[object Object],[object Object]
Native machine code runs on the client CPU
Not an interpreter,[object Object]
Modified GCC compiler, etc
Build for different CPU architectures
NaCl runtime verifies untrusted code (static analysis)
NaCl executes verified code
No fork, process control, file system access, etc.http://code.google.com/chrome/nativeclient/,[object Object]
receive message,[object Object],functionmoduleDidLoad() {,[object Object],HelloTutorialModule=document.getElementById('hello_tutorial');,[object Object],HelloTutorialModule.addEventListener('message', handleMessage, false);,[object Object],// Send a message to the NaCl module,[object Object],HelloTutorialModule.postMessage('hello');,[object Object],},[object Object],send message,[object Object],Talking to NaCl,[object Object],via Pepper API,[object Object]
virtualvoidHandleMessage(constpp::Var& var_message) {,[object Object],if (!var_message.is_string()),[object Object],return;,[object Object],std::string message = var_message.AsString();,[object Object],pp::Varvar_reply;,[object Object],var_reply = pp::Var(kReplyString);,[object Object],PostMessage(var_reply);,[object Object],},[object Object],dispatch response,[object Object],Talking to the Browser,[object Object],via Pepper API,[object Object]
<embedname="nacl_module",[object Object],id="hello_tutorial",[object Object],width=0 height=0,[object Object],src="hello_tutorial.nmf",[object Object],type="application/x-nacl" />,[object Object],Connecting the Pipes: NaCl, Pepper,[object Object],executing native code in the browser,[object Object]
http://code.google.com/chrome/nativeclient/docs/reference/peppercpp/,[object Object],[object Object]
FileIO
Graphics2D
ImageData

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