Chunked Response Handler

In order to send chunked data with Aino, you must use a ChunkedHandler.

To use chunked response, you must return chunk: true and handler: YourHandler in the token.

EventStream Example

In the example below, a Ping route starts a chunked response.

defmodule Web.Ping do
  def index(token) do
    token
    |> Token.response_status(200)
    |> Token.response_header("Content-Type", "text/event-stream")
    |> Map.put(:chunk, true)
    |> Map.put(:handler, Web.Ping.Handler)
  end
end

defmodule Web.Ping.Handler do
  @behaviour Aino.ChunkedHandler

  @impl true
  def init(token) do
    :timer.send_interval(1000, :ping)

    {:ok, token}
  end

  @impl true
  def handle(:ping, token) do
    json = Jason.encode!(%{time: DateTime.utc_now()})
    response = "event: ping
data: #{json}

"
    {:ok, response, token}
  end
end