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Contents
module Tapyrus
module Message
# inventory class. inventory is a part of message.
# https://bitcoin.org/en/developer-reference#term-inventory
class Inventory
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
attr_accessor :identifier
attr_accessor :hash
def initialize(identifier, hash)
raise Error, "invalid type identifier specified. identifier = #{identifier}" unless valid_identifier?(identifier)
@identifier = identifier
@hash = hash
end
# parse inventory payload
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
def to_payload
[identifier].pack('V') << hash.htb
end
def block?
[MSG_BLOCK, MSG_WITNESS_BLOCK, MSG_FILTERED_WITNESS_BLOCK].include?(identifier)
end
private
def valid_identifier?(identifier)
[MSG_TX, MSG_BLOCK, MSG_FILTERED_BLOCK, MSG_CMPCT_BLOCK, MSG_WITNESS_TX,
MSG_WITNESS_BLOCK, MSG_FILTERED_WITNESS_BLOCK].include?(identifier)
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems