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A pure-Elixir HTTP server built for Plug & WebSock apps
Security advisory:
This version has known vulnerabilities.
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lib/bandit/http2/frame/window_update.ex
defmodule Bandit.HTTP2.Frame.WindowUpdate do
@moduledoc false
defstruct stream_id: nil,
size_increment: nil
@typedoc "An HTTP/2 WINDOW_UPDATE frame"
@type t :: %__MODULE__{
stream_id: Bandit.HTTP2.Stream.stream_id(),
size_increment: non_neg_integer()
}
@spec deserialize(Bandit.HTTP2.Frame.flags(), Bandit.HTTP2.Stream.stream_id(), iodata()) ::
{:ok, t()} | {:error, Bandit.HTTP2.Errors.error_code(), binary()}
def deserialize(_flags, _stream_id, <<_reserved::1, 0::31>>) do
{:error, Bandit.HTTP2.Errors.flow_control_error(),
"Invalid WINDOW_UPDATE size increment (RFC9113§6.9)"}
end
def deserialize(_flags, stream_id, <<_reserved::1, size_increment::31>>) do
{:ok, %__MODULE__{stream_id: stream_id, size_increment: size_increment}}
end
def deserialize(_flags, _stream_id, _payload) do
{:error, Bandit.HTTP2.Errors.frame_size_error(), "Invalid WINDOW_UPDATE frame (RFC9113§6.9)"}
end
defimpl Bandit.HTTP2.Frame.Serializable do
def serialize(%Bandit.HTTP2.Frame.WindowUpdate{} = frame, _max_frame_size) do
[{0x8, 0, frame.stream_id, <<0::1, frame.size_increment::31>>}]
end
end
end