Class: Tapyrus::Message::Inventory

Inherits:
Object
  • Object
show all
Defined in:
lib/tapyrus/message/inventory.rb

Overview

inventory class. inventory is a part of message. bitcoin.org/en/developer-reference#term-inventory

Constant Summary collapse

SEGWIT_FLAG = 
1 << 30
MSG_TX = 
1
MSG_BLOCK = 
2
MSG_FILTERED_BLOCK = 
3
MSG_CMPCT_BLOCK = 
4
MSG_WITNESS_TX = 
SEGWIT_FLAG | MSG_TX
MSG_WITNESS_BLOCK = 
SEGWIT_FLAG | MSG_BLOCK
MSG_FILTERED_WITNESS_BLOCK = 
SEGWIT_FLAG | MSG_FILTERED_BLOCK

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(identifier, hash) ⇒ Inventory

Returns a new instance of Inventory.



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# File 'lib/tapyrus/message/inventory.rb', line 19

def initialize(identifier, hash)
  unless valid_identifier?(identifier)
    raise Error, "invalid type identifier specified. identifier = #{identifier}"
  end
  @identifier = identifier
  @hash = hash
end

Instance Attribute Details

#hash ⇒ Object

Returns the value of attribute hash.



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# File 'lib/tapyrus/message/inventory.rb', line 17

def hash
  @hash
end

#identifier ⇒ Object

Returns the value of attribute identifier.



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# File 'lib/tapyrus/message/inventory.rb', line 16

def identifier
  @identifier
end

Class Method Details

.parse_from_payload(payload) ⇒ Object

parse inventory payload

Raises:



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# File 'lib/tapyrus/message/inventory.rb', line 28

def self.parse_from_payload(payload)
  raise Error, "invalid inventory size." if payload.bytesize != 36
  identifier = payload[0..4].unpack("V").first
  hash = payload[4..-1].bth # internal byte order
  new(identifier, hash)
end

Instance Method Details

#block? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/tapyrus/message/inventory.rb', line 39

def block?
  [MSG_BLOCK, MSG_WITNESS_BLOCK, MSG_FILTERED_WITNESS_BLOCK].include?(identifier)
end

#to_payload ⇒ Object 



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# File 'lib/tapyrus/message/inventory.rb', line 35

def to_payload
  [identifier].pack("V") << hash.htb
end