Class: WsIo

Inherits:
Object
  • Object
show all
Defined in:
lib/ws-io.rb

Class Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Class Attribute Details

.domains ⇒ Object

Returns the value of attribute domains.



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# File 'lib/ws-io.rb', line 9

def domains
  @domains
end

.port ⇒ Object

Returns the value of attribute port.



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# File 'lib/ws-io.rb', line 9

def port
  @port
end

.ws ⇒ Object

Returns the value of attribute ws.



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# File 'lib/ws-io.rb', line 9

def ws
  @ws
end

Class Method Details

.after(&block) ⇒ Object 



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# File 'lib/ws-io.rb', line 85

def after(&block)
  @after_block = block
  self
end

.escape(output) ⇒ Object 



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# File 'lib/ws-io.rb', line 151

def escape(output)
  ERB::Util.html_escape(output.gsub(/\e\[[^m]+m/, '')) if output
end

.fake_io ⇒ Object 



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# File 'lib/ws-io.rb', line 106

def fake_io
  @in_read, @in_write = IO.pipe
  @stdin = STDIN.clone
  STDIN.reopen(@in_read)
  @stdout = STDOUT.clone
  @stderr = STDERR.clone
  @out_read, @out_write = IO.pipe
  STDOUT.reopen(@out_write)
  STDERR.reopen(@out_write)
  g 'fake_io'
end

.input(msg) ⇒ Object 



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# File 'lib/ws-io.rb', line 143

def input(msg)
  @in_write.puts(msg + "\n")
end

.join ⇒ Object 



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# File 'lib/ws-io.rb', line 90

def join
  @server_thread.join if @server_thread
end

.open ⇒ Object 



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# File 'lib/ws-io.rb', line 94

def open
  js_paths = %w(jquery.min.js autoresize.jquery.js).map do |js|
    'file://localhost' + File.expand_path("../public/#{js}", __FILE__)
  end
  tempfile = Tempfile.open('ws-io')
  template = File.read(File.expand_path('../public/index.html.erb', __FILE__))
  tempfile << ERB.new(template, nil, '-').result(binding)
  tempfile.flush
  Launchy::Browser.run(tempfile.path)
  self
end

.output ⇒ Object 



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# File 'lib/ws-io.rb', line 147

def output
  @out_read.gets
end

.start(port = 8080, domains = ["*"]) ⇒ Object 



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# File 'lib/ws-io.rb', line 17

def start(port = 8080, domains = ["*"])
  @port = port
  @domains = domains

  fake_io

  m = Mutex.new
  c = ConditionVariable.new

  @server_thread = Thread.start do
    @server = WebSocketServer.new(:accepted_domains => domains, :port => port)
    begin
      @server.run() do |ws|
        if ws.path == "/"
          ws.handshake()
          WsIo.ws = ws
          c.signal                      # ####
          while data = ws.receive()          #
            WsIo.input(data)                 #
          end                                #
        else                                 #  ##     ## ##     ## ######## ######## ##     ## ####
          ws.handshake("404 Not Found")      #  ###   ### ##     ##    ##    ##        ##   ##  ####
        end                                  #  #### #### ##     ##    ##    ##         ## ##   ####
        stop_server                          #  ## ### ## ##     ##    ##    ######      ###     ##
      end                                    #  ##     ## ##     ##    ##    ##         ## ##
    rescue => e                              #  ##     ## ##     ##    ##    ##        ##   ##  ####
      g e                                    #  ##     ##  #######     ##    ######## ##     ## ####
    end                                      #
  end                                        #
                                             #
  Thread.start do                            #
    m.synchronize { c.wait(m) }         # <###
    @after_block.call if @after_block
    loop do
      if @ws
        begin
          @ws.send(escape(output))
        rescue
          # ignore!
        end
      end
    end
  end

  Thread.start do
    begin
      yield
    rescue => e
      g e
    ensure
      unfake_io
      stop_server
    end
  end

  self
rescue SignalException, StandardError => e
  g e
  unfake_io
  stop_server
  raise
rescue Exception => e
  g e
  unfake_io
  stop_server
  raise
end

.stop ⇒ Object 



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# File 'lib/ws-io.rb', line 138

def stop
  stop_server
  unfake_io
end

.stop_server ⇒ Object 



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# File 'lib/ws-io.rb', line 130

def stop_server
  ws.close
  @server.tcp_server.close
  g 'stop_server'
rescue => e
  g e
end

.unfake_io ⇒ Object 



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# File 'lib/ws-io.rb', line 118

def unfake_io
  STDIN.reopen(@stdin)
  STDOUT.reopen(@stdout)
  STDERR.reopen(@stderr)
  [@in_read, @in_write, @out_read, @out_write].each do |io|
    io.close unless io.closed?
  end
  g 'unfake_io'
rescue => e
  g e
end

Instance Method Details

#g(*args) ⇒ Object 



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# File 'lib/ws-io.rb', line 14

def g(*args);end