Sha256: c5b835215de832fdc25340abc78b0bf4f1eb8c2efc3e71087eb779cef99b4045
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Size: 1.25 KB
Versions: 32
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Stored size: 1.25 KB
Contents
module Bitcoin
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 Bitcoin::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 = Bitcoin.unpack_var_int_from_io(buf)
indexes = index_len.times.map{Bitcoin.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 << Bitcoin.pack_var_int(indexes.size)
indexes.size.times do |i|
index = indexes[i]
index -= indexes[i-1] + 1 if i > 0
p << Bitcoin.pack_var_int(index)
end
p
end
end
end
end
Version data entries
32 entries across 32 versions & 1 rubygems