Module: Bitcoin::Protocol

Defined in:
lib/bitcoin/protocol.rb,
lib/bitcoin/protocol/tx.rb,
lib/bitcoin/protocol/txin.rb,
lib/bitcoin/protocol/txout.rb,
lib/bitcoin/protocol/block.rb,
lib/bitcoin/protocol/parser.rb,
lib/bitcoin/protocol/handler.rb,
lib/bitcoin/protocol/address.rb

Defined Under Namespace

Classes: Addr, Block, Handler, Parser, Tx, TxIn, TxOut, VersionPkt

Constant Summary

VERSION = 
31900
DNS_Seed = 
[ "bitseed.xf2.org", "bitseed.bitcoin.org.uk" ]
Uniq = 
rand(0xffffffffffffffff)

Class Method Summary (collapse)

Class Method Details

+ (Object) getdata_pkt(type, hashes) 



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# File 'lib/bitcoin/protocol.rb', line 58

def self.getdata_pkt(type, hashes)
  return if hashes.size >= 256
  t = case type
      when :tx;    1
      when :block; 2
      else         0
      end
  pkt("getdata", [hashes.size].pack("C") +
    hashes.map{|hash| [t].pack("I") + hash[0..32].reverse }.join)
end

+ (Object) inv_pkt(type, hashes) 



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# File 'lib/bitcoin/protocol.rb', line 69

def self.inv_pkt(type, hashes)
  return if hashes.size >= 256
  t = case type
      when :tx;    1
      when :block; 2
      else         0
      end
  pkt("inv", [hashes.size].pack("C") +
    hashes.map{|hash| [t].pack("I") + hash[0..32].reverse }.join)
end

+ (Object) pack_var_int(i) 



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# File 'lib/bitcoin/protocol.rb', line 31

def self.pack_var_int(i)
  if    i <  0xfd;                [      i].pack("C")
  elsif i <= 0xffff;              [0xfd, i].pack("Cv")
  elsif i <= 0xffffffff;          [0xfe, i].pack("CV")
  elsif i <= 0xffffffffffffffff;  [0xff, i].pack("CQ")
  else raise "int(#{i}) too large!"
  end
end

+ (Object) pkt(command, payload) 



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# File 'lib/bitcoin/protocol.rb', line 40

def self.pkt(command, payload)
  cmd      = command.ljust(12, "\x00")[0...12]
  length   = [payload.bytesize].pack("I")
  checksum = ['version', 'verack'].include?(command) ?
    "" : Digest::SHA256.digest(Digest::SHA256.digest(payload))[0...4]

  [Bitcoin.network[:magic_head], cmd, length, checksum, payload].join
end

+ (Object) unpack_var_int(payload) 



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# File 'lib/bitcoin/protocol.rb', line 22

def self.unpack_var_int(payload)
  case payload.unpack("C")[0] # TODO add test cases
  when 0xfd; payload.unpack("xva*")
  when 0xfe; payload.unpack("xVa*")
  when 0xff; payload.unpack("xQa*") # TODO add little-endian version of Q
  else;      payload.unpack("Ca*")
  end
end

+ (Object) verack_pkt 



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# File 'lib/bitcoin/protocol.rb', line 54

def self.verack_pkt
  pkt("verack", "")
end

+ (Object) version_pkt(from_id, from, to, last_block = nil, time = nil) 



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# File 'lib/bitcoin/protocol.rb', line 49

def self.version_pkt(from_id, from, to, last_block=nil, time=nil)
  payload = Protocol::VersionPkt.build_payload(from_id, from, to, last_block, time)
  pkt("version", payload)
end