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lib/plumbapius/conn_helper.ex

defmodule Plumbapius.ConnHelper do
alias Plug.Conn
@spec get_req_header(Conn.t(), String.t()) :: binary | nil
def get_req_header(conn, name), do: conn |> Conn.get_req_header(name) |> Enum.at(0)
@spec get_resp_header(Conn.t(), String.t()) :: binary | nil
def get_resp_header(conn, name), do: conn |> Conn.get_resp_header(name) |> Enum.at(0)
end