class Mysql::Protocol::AuthenticationPacket

# File lib/mysql/protocol.rb, line 784
def self.serialize(client_flags, max_packet_size, charset_number, username, scrambled_password, databasename, auth_plugin, connect_attrs)
  data = [
    client_flags,
    max_packet_size,
    charset_number,
    "",                   # always 0x00 * 23
    username,
    Packet.lcs(scrambled_password),
  ]
  pack = +"VVCa23Z*A*"
  if databasename
    data.push databasename
    pack.concat "Z*"
  end
  data.push auth_plugin
  pack.concat "Z*"
  attr = connect_attrs.map{|k, v| [Packet.lcs(k.to_s), Packet.lcs(v.to_s)]}.flatten.join
  data.pack(pack) + Packet.lcb(attr.size)+attr
end