Comet with Sinatra
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This document provides an overview of the Bayeux protocol for implementing real-time messaging between clients and servers. It describes how clients can connect, subscribe to channels, publish messages, and handle incoming asynchronous messages. Server-side implementation details are also covered, including delivering messages to subscribed clients and handling authentication. Code samples are provided for client-side usage with jQuery Comet and a Sinatra-based server implementation in Ruby.
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require ‘bayeux’
class ChatServer < Bayeux
configure { set :public, File.dirname(__FILE__) }
get '/' { erb :index }
def deliver msg
channel = msg['channel']
publish :data => msg['data'], :channel => channel
{ :successful => true, :channel => channel
:clientId => msg['clientId'],:id => msg['id']
}
end
end
run ChatServer.new](https://image.slidesharecdn.com/cometwithsinatra-key-110630184136-phpapp01/85/Comet-with-Sinatra-12-320.jpg)
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Comet with Sinatra
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- 11. <74.;`:1K4(`8 <script src="jquery.comet.js"></script> <script src="json2.js”></script> <script type="application/javascript"> $.comet.connect(location.origin+"/cometd"); $.comet.subscribe("/chat/demo", function(msg) {...}); $.comet.publish("/chat/demo", { user: username, join: true, chat: username + " has joined" }); </script> ALSO: • startBatch(), endBatch() • unsubscribe(channel), disconnect()
- 12. B-;47ZF.-:C*94K a*94K*',8(-//*B-;47ZF.-:C a*:-(*:1,0'9`.7 require ‘bayeux’ class ChatServer < Bayeux configure { set :public, File.dirname(__FILE__) } get '/' { erb :index } def deliver msg channel = msg['channel'] publish :data => msg['data'], :channel => channel { :successful => true, :channel => channel :clientId => msg['clientId'],:id => msg['id'] } end end run ChatServer.new
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