Class: Bitcoin::Message::CFCheckpt

Inherits:
Base
  • Object
show all
Defined in:
lib/bitcoin/message/cfcheckpt.rb

Overview

cfcheckpt message for BIP-157 github.com/bitcoin/bips/blob/master/bip-0157.mediawiki#cfcheckpt

Constant Summary collapse

COMMAND = 
'cfcheckpt'

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Base

from_pkt, #to_pkt

Methods included from Util

#byte_to_bit, #calc_checksum, #decode_base58_address, #double_sha256, #encode_base58_address, #hash160, #hkdf_sha256, #hmac_sha256, #pack_boolean, #pack_var_int, #pack_var_string, #padding_zero, #sha256, #tagged_hash, #unpack_boolean, #unpack_var_int, #unpack_var_int_from_io, #unpack_var_string, #valid_address?

Methods included from HexConverter

#to_hex

Constructor Details

#initialize(filter_type, stop_hash, filter_headers) ⇒ CFCheckpt

Returns a new instance of CFCheckpt.



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# File 'lib/bitcoin/message/cfcheckpt.rb', line 14

def initialize(filter_type, stop_hash, filter_headers)
  @filter_type = filter_type
  @stop_hash = stop_hash
  @filter_headers = filter_headers
end

Instance Attribute Details

#filter_headers ⇒ Object

little endian



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# File 'lib/bitcoin/message/cfcheckpt.rb', line 12

def filter_headers
  @filter_headers
end

#filter_type ⇒ Object

Returns the value of attribute filter_type.



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# File 'lib/bitcoin/message/cfcheckpt.rb', line 10

def filter_type
  @filter_type
end

#stop_hash ⇒ Object

little endian



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# File 'lib/bitcoin/message/cfcheckpt.rb', line 11

def stop_hash
  @stop_hash
end

Class Method Details

.parse_from_payload(payload) ⇒ Object 



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# File 'lib/bitcoin/message/cfcheckpt.rb', line 20

def self.parse_from_payload(payload)
  buf = StringIO.new(payload)
  type = buf.read(1).unpack1('C')
  hash = buf.read(32).unpack1('H*')
  count = Bitcoin.unpack_var_int_from_io(buf)
  headers = count.times.map{buf.read(32).bth}
  self.new(type, hash, headers)
end

Instance Method Details

#to_payload ⇒ Object 



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# File 'lib/bitcoin/message/cfcheckpt.rb', line 29

def to_payload
  [filter_type, stop_hash].pack('CH*') +
      Bitcoin.pack_var_int(filter_headers.size) + filter_headers.map(&:htb).join
end