def enqueue_packet(payload)
payload = client.compress(payload)
actual_length = 4 + payload.length + 1
padding_length = client.block_size - (actual_length % client.block_size)
padding_length += client.block_size if padding_length < 4
packet_length = payload.length + padding_length + 1
if packet_length < 16
padding_length += client.block_size
packet_length = payload.length + padding_length + 1
end
padding = Array.new(padding_length) { rand(256) }.pack("C*")
unencrypted_data = [packet_length, padding_length, payload, padding].pack("NCA*A*")
mac = client.hmac.digest([client.sequence_number, unencrypted_data].pack("NA*"))
encrypted_data = client.update_cipher(unencrypted_data) << client.final_cipher
message = encrypted_data + mac
debug { "queueing packet nr #{client.sequence_number} type #{payload.getbyte(0)} len #{packet_length}" }
enqueue(message)
client.increment(packet_length)
self
end