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Versions: 11
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Contents
module Tapyrus
module Message
# BIP-152 Compact Block's data format.
# https://github.com/bitcoin/bips/blob/master/bip-0152.mediawiki#BlockTransactionsRequest
class BlockTransactionRequest
attr_accessor :block_hash # When matching with Tapyrus::BlockHeader#hash It is necessary to reverse the byte order.
attr_accessor :indexes
def initialize(block_hash, indexes)
@block_hash = block_hash
@indexes = indexes
end
def self.parse_from_payload(payload)
buf = StringIO.new(payload)
block_hash = buf.read(32).bth
index_len = Tapyrus.unpack_var_int_from_io(buf)
indexes = index_len.times.map { Tapyrus.unpack_var_int_from_io(buf) }
# index data differentially encoded
offset = 0
index_len.times do |i|
index = indexes[i]
index += offset
indexes[i] = index
offset = index + 1
end
self.new(block_hash, indexes)
end
def to_payload
p = block_hash.htb << Tapyrus.pack_var_int(indexes.size)
indexes.size.times do |i|
index = indexes[i]
index -= indexes[i - 1] + 1 if i > 0
p << Tapyrus.pack_var_int(index)
end
p
end
end
end
end
Version data entries
11 entries across 11 versions & 1 rubygems