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A MQTT client for Elixir.

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tortoise lib tortoise package puback.ex
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lib/tortoise/package/puback.ex 

defmodule Tortoise.Package.Puback do

  @moduledoc false



  @opcode 4



  alias Tortoise.Package



  @opaque t :: %__MODULE__{

            __META__: Package.Meta.t(),

            identifier: Tortoise.package_identifier()

          }

  @enforce_keys [:identifier]

  defstruct __META__: %Package.Meta{opcode: @opcode, flags: 0b0000},

            identifier: nil



  @spec decode(<<_::32>>) :: t

  def decode(<<@opcode::4, 0::4, 2, identifier::big-integer-size(16)>>)

      when identifier in 0x0001..0xFFFF do

    %__MODULE__{identifier: identifier}

  end



  # Protocols ----------------------------------------------------------

  defimpl Tortoise.Encodable do

    def encode(%Package.Puback{identifier: identifier} = t)

        when identifier in 0x0001..0xFFFF do

      [Package.Meta.encode(t.__META__), <<2, identifier::big-integer-size(16)>>]

    end

  end

end