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lisovskyvlad/counter.rb

Forked from lexmag/counter.rb
Created November 23, 2015 23:56
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  1. @lexmag lexmag created this gist Aug 4, 2012.
    37 changes: 37 additions & 0 deletions counter.rb
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,37 @@
    require 'sinatra'
    set server: :thin

    get '/' do
    erb :welcome
    end

    get '/stream', provides: 'text/event-stream' do
    stream do |out|
    loop do
    if (Time.now.sec % 5).zero?
    out << "event: counter\n"
    out << "data: 5 seconds passed\n\n"
    end
    sleep 1
    end
    end
    end

    __END__

    @@ layout
    <html>
    <head>
    <title>Terribly simple streaming with Sinatra</title>
    <meta charset='utf-8' />
    <script src='http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js'></script>
    <script>
    var source = new EventSource('/stream');
    source.addEventListener('counter', function(e) { $('#counter').append(e.data + '<br />') });
    </script>
    </head>
    <body><%= yield %></body>
    </html>

    @@ welcome
    <div id='counter'></div>