Class: MQTT::SN::Packet::Connect

Inherits:
Packet
  • Object
show all
Defined in:
lib/mqtt/sn/packet.rb

Constant Summary collapse

DEFAULTS = 
{
  request_will: false,
  clean_session: true,
  keep_alive: 15
}.freeze

Constants inherited from Packet

Packet::ATTR_DEFAULTS

Instance Attribute Summary collapse

Attributes inherited from Packet

#body_length, #flags, #id, #version

Instance Method Summary collapse

Methods inherited from Packet

create_from_header, #dup, #initialize, #inspect, #message_id, #message_id=, parse, parse_header, read, read_byte, #to_s, #type_id, #type_name, #update_attributes, #validate_flags

Constructor Details

This class inherits a constructor from MQTT::Packet

Instance Attribute Details

#client_id ⇒ Object

Returns the value of attribute client_id.



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# File 'lib/mqtt/sn/packet.rb', line 235

def client_id
  @client_id
end

#keep_alive ⇒ Object

Returns the value of attribute keep_alive.



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# File 'lib/mqtt/sn/packet.rb', line 234

def keep_alive
  @keep_alive
end

Instance Method Details

#encode_body ⇒ Object

Get serialisation of packet's body



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# File 'lib/mqtt/sn/packet.rb', line 244

def encode_body
  if @client_id.nil? || @client_id.empty? || @client_id.length > 23
    raise "Invalid client identifier when serialising packet"
  end

  [encode_flags, 0x01, keep_alive, client_id].pack("CCna*")
end

#parse_body(buffer) ⇒ Object

Raises:



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# File 'lib/mqtt/sn/packet.rb', line 252

def parse_body(buffer)
  flags, protocol_id, self.keep_alive, self.client_id = buffer.unpack("CCna*")

  raise ProtocolException, "Unsupported protocol ID number: #{protocol_id}" if protocol_id != 0x01

  parse_flags(flags)
end