Class: Hacklet::Message

Inherits:

BinData::Record

• Object
• BinData::Record
• Hacklet::Message

Defined in:

lib/hacklet/messages.rb

Direct Known Subclasses

AckResponse, BootConfirmRequest, BootConfirmResponse, BootRequest, BootResponse, BroadcastResponse, HandshakeRequest, HandshakeResponse, LockRequest, LockResponse, SamplesRequest, SamplesResponse, ScheduleRequest, ScheduleResponse, UnlockRequest, UpdateTimeAckResponse, UpdateTimeRequest, UpdateTimeResponse

Instance Method Summary

• #calculate_checksum ⇒ Object

Instance Method Details

#calculate_checksum ⇒ Object

# File 'lib/hacklet/messages.rb', line 5

def calculate_checksum
  checksum_fields = @field_names - [:header, :checksum]
  buffer = StringIO.new
  io = BinData::IO.new(buffer)
  checksum_fields.each do |field|
    send(field).do_write(io)
  end
  buffer.rewind

  buffer.read.bytes.inject(0) { |s,x| s^x }
end