Class: Rakie::Websocket

Inherits:
Object
  • Object
show all
Defined in:
lib/rakie/websocket.rb

Direct Known Subclasses

WebsocketServer

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(delegate = nil, channel = nil) ⇒ Websocket

Returns a new instance of Websocket.

Parameters:



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# File 'lib/rakie/websocket.rb', line 7

def initialize(delegate=nil, channel=nil)
  @delegate = delegate

  if channel == nil
    channel = TCPChannel.new('127.0.0.1', 10086, self)        
  end

  @channel = channel

  # @type [WebsocketMessage]
  @recv_message = WebsocketMessage.new

  # @type [Array<WebsocketMessage>]
  @send_messages = []
  @client_side = true
end

Instance Attribute Details

#channel ⇒ Object (readonly)

Returns the value of attribute channel.



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# File 'lib/rakie/websocket.rb', line 4

def channel
  @channel
end

#client_side ⇒ Object

Returns the value of attribute client_side.



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# File 'lib/rakie/websocket.rb', line 3

def client_side
  @client_side
end

#delegate ⇒ Object

Returns the value of attribute delegate.



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# File 'lib/rakie/websocket.rb', line 3

def delegate
  @delegate
end

Instance Method Details

#close ⇒ Object 



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# File 'lib/rakie/websocket.rb', line 136

def close
  ws_message = WebsocketMessage.new
  ws_message.fin = true
  ws_message.op_code = WebsocketMessage::OP_CLOSE

  if @client_side
    ws_message.mask = true
    ws_message.refresh_masking
  end

  ws_message.payload = "close"

  send_message = ws_message.to_s

  Log.debug("Rakie::Websocket send close: #{send_message}")

  @channel.write(send_message) # Response data
end

#on_close(channel) ⇒ Object 



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# File 'lib/rakie/websocket.rb', line 107

def on_close(channel)
  if @delegate
    @delegate.on_disconnect(self)
  end
end

#on_recv(channel, data) ⇒ Object

Parameters:

  • data (String) 


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# File 'lib/rakie/websocket.rb', line 25

def on_recv(channel, data)
  Log.debug("Rakie::Websocket recv: #{data}")

  total_parsed = 0

  while data.length > 0
    # @type [WebsocketMessage] request
    message = @recv_message

    if message.parse_status == ParseStatus::COMPLETE
      message = WebsocketMessage.new
      @recv_message = message
    end

    len = message.parse(data)
    total_parsed += len

    Log.debug("Rakie::Websocket receive message: #{message.to_s} parse with #{len}")

    if message.parse_status == ParseStatus::COMPLETE
      response = WebsocketMessage.new

      if message.op_code == WebsocketMessage::OP_PING
        response.fin = true
        response.op_code = WebsocketMessage::OP_PONG
        response.payload = "Rakie::Websocket: op pong"

      elsif message.op_code == WebsocketMessage::OP_PONG
        response.fin = true
        response.op_code = WebsocketMessage::OP_PING
        response.payload = "Rakie::Websocket: op ping"

      elsif message.op_code == WebsocketMessage::OP_CLOSE
        channel.close

        Log.debug("Rakie::Websocket: op close")
        return 0

      elsif @delegate
        @delegate.on_message(self, message.payload)

      else
        response.fin = true
        response.op_code = WebsocketMessage::OP_TEXT
        response.payload = "Rakie!"
      end
      
      response_data = response.to_s

      Log.debug("Rakie::Websocket response: #{response_data}")

      channel.write(response_data) # Response data

    elsif message.parse_status == ParseStatus::ERROR
      channel.close

      Log.debug("Rakie::Websocket: Illegal message")
      return 0
    end

    if len >= data.length
      break
    end

    data = data[len .. -1]
  end

  return total_parsed
end

#on_send(channel) ⇒ Object 



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# File 'lib/rakie/websocket.rb', line 95

def on_send(channel)
  # @type [WebsocketMessage]
  last_message = @send_messages.shift

  if last_message
    if last_message.op_code == WebsocketMessage::OP_CLOSE
      Log.debug("Rakie::Websocket: send finish and close channel")
      channel.close
    end
  end
end

#send(message, is_binary = false) ⇒ Object 



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# File 'lib/rakie/websocket.rb', line 113

def send(message, is_binary=false)
  ws_message = WebsocketMessage.new
  ws_message.fin = true
  ws_message.op_code = WebsocketMessage::OP_TEXT
  ws_message.payload = message

  if is_binary
    ws_message.op_code = WebsocketMessage::OP_BIN
  end

  if @client_side
    ws_message.mask = true
    ws_message.refresh_masking
  end

  send_message = ws_message.to_s
  @send_messages << ws_message

  Log.debug("Rakie::Websocket send: #{send_message}")

  @channel.write(send_message) # Response data
end