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

.ws ⇒ Object

Returns the value of attribute ws.



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# File 'lib/ws-io.rb', line 6

def ws
  @ws
end

Class Method Details

.escape(output) ⇒ Object 



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# File 'lib/ws-io.rb', line 113

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 71

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 105

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

.output ⇒ Object 



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# File 'lib/ws-io.rb', line 109

def output
  @out_read.gets
end

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



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

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

  threads = []

  threads << Thread.start do
    @server = WebSocketServer.new(:accepted_domains => domains, :port => port)
    @server.run() do |ws|
      if ws.path == "/"
        ws.handshake()
        WsIo.ws = ws
        while data = ws.receive()
          WsIo.input(data)
        end
      else
        ws.handshake("404 Not Found")
      end
      stop_server
    end
  end

  threads << Thread.start do
    begin
      yield
    ensure
      unfake_io
      stop_server
    end
  end

  threads << Thread.start do
    loop do
      break if @ws && @ws.instance_variable_get(:@socket).closed?
      if @ws
        begin
          @ws.send(escape(output))
        rescue
          # ignore!
        end
      end
    end
  end

  threads.each do |thread|
    thread.join
  end
rescue SignalException, StandardError => e
  g e
  unfake_io
  stop_server
rescue Exception => e
  g e
  unfake_io
  stop_server
  raise
end

.stop ⇒ Object 



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# File 'lib/ws-io.rb', line 100

def stop
  stop_server
  unfake_io
end

.stop_server ⇒ Object 



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

def stop_server
  ws.close
  @server.tcp_server.close
  g 'stop_server'
end

.unfake_io ⇒ Object 



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# File 'lib/ws-io.rb', line 83

def unfake_io
  STDIN.reopen(@stdin)
  STDOUT.reopen(@stdout)
  STDERR.reopen(@stderr)
  @in_read.close
  @in_write.close
  @out_write.close
  @out_read.close
  g 'unfake_io'
end

Instance Method Details

#g(*args) ⇒ Object 



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# File 'lib/ws-io.rb', line 11

def g(*args);end