Digest access authentication middleware

Wiki on the topic

NOTE Currently the implementation is incomplete and works only for MD5 algorithm and auth qop.

Example:

defmodule MyClient do
  use Tesla

  def client(username, password, opts \ %{}) do
    Tesla.build_client [
      {Tesla.Middleware.DigestAuth, Map.merge(%{username: username, password: password}, opts)}
    ]
  end
end

Options:

• :username - username (defaults to "")
• :password - password (defaults to "")
• :cnonce_fn - custom function generating client nonce (defaults to &Tesla.Middleware.DigestAuth.cnonce/0)
• :nc - nonce counter (defaults to "00000000")