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Pure Elixir HTTP/2 implementation
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lib/ankh/frame/data/payload.ex
defmodule Ankh.Frame.Data.Payload do
@moduledoc false
@type t :: %__MODULE__{pad_length: integer, data: binary}
defstruct pad_length: 0, data: <<>>
end
defimpl Ankh.Frame.Encodable, for: Ankh.Frame.Data.Payload do
def decode(payload, <<pad_length::8, padded_data::binary>>, flags: %{padded: true}) do
data = binary_part(padded_data, 0, byte_size(padded_data) - pad_length)
{:ok, %{payload | pad_length: pad_length, data: data}}
end
def decode(payload, <<data::binary>>, flags: %{padded: false}) do
{:ok, %{payload | data: data}}
end
def decode(_payload, _data, _options), do: {:error, :decode_error}
def encode(%{pad_length: pad_length, data: data}, flags: %{padded: true}) do
{:ok, [<<pad_length::8, data>>, :binary.copy(<<0>>, pad_length)]}
end
def encode(%{data: data}, flags: %{padded: false}) do
{:ok, [data]}
end
def encode(_payload, _options), do: {:error, :encode_error}
end