send_file_example.ex

defmodule SendFileClient do
  use Maxwell.Builder, ~w(post)a

  middleware Maxwell.Middleware.BaseUrl, "http://httpbin.org"
  middleware Maxwell.Middleware.Opts, [connect_timeout: 10000, recv_timeout: 20000]

  adapter Maxwell.Adapter.Hackney

  @doc """
  Post whole file once
  ###Example
     Client.post_file_once("./mix.exs")
  """
  def post_file_once(filepath) do
    new
    |> put_path("/post")
    |> put_req_body({:file, filepath})
    |> post!
    |> get_resp_body()
  end
  @doc """
  Post whole file by chunked
  ###Example
     Client.post_file_chunked("./mix.exs")
  """
  def post_file_chunked(filepath) do
    new
    |> put_path("/post")
    |> put_req_header("transfer_encoding", "chunked")
    |> put_req_body({:file, filepath})
    |> post!
    |> get_resp_body()
  end
end