#!/usr/bin/env ruby -I ../lib -I lib
# frozen_string_literal: true
# This example does *not* work properly with WEBrick or other
# servers that buffer output. To shut down the server, close any
# open browser tabs that are connected to the chat server.
require 'sinatra'
set :server, :puma
connections = Set.new
get '/' do
halt erb(:login) unless params[:user]
erb :chat, locals: { user: params[:user].gsub(/\W/, '') }
end
get '/stream', provides: 'text/event-stream' do
stream :keep_open do |out|
if connections.add?(out)
out.callback { connections.delete(out) }
end
out << "heartbeat:\n"
sleep 1
rescue
out.close
end
end
post '/' do
connections.each do |out|
out << "data: #{params[:msg]}\n\n"
rescue
out.close
end
204 # response without entity body
end
__END__
@@ layout
Super Simple Chat with Sinatra
<%= yield %>
@@ login
@@ chat