soyjeansoy

soyjeansoy

Plug.Parsers.RequestTooLargeError when uploading large files

Hi, how can i upload large file? it throws Plug.Parsers.RequestTooLargeError even though i added length in Plug.Parsers.

# endpoint.ex
  plug Plug.Parsers,
    parsers: [
      :urlencoded,
      {:multipart, length: 100_000_000},
      :json
    ],
    length: 100_000_000,
    pass: ["*/*"],
    json_decoder: Phoenix.json_library()

My heex template form has multipart and file_input/3 has multiple attribute. I’m uploading 3 files, no larger than 5mb each and it throws this:

Plug.Parsers.RequestTooLargeError at POST /upload
the request is too large. If you are willing to process larger requests, please give a :length to Plug.Parsers
lib/plug/parsers.ex
350
351      {:next, conn} ->
352        reduce(conn, rest, type, subtype, params, pass, query_string_length, validate_utf8)
353
354      {:error, :too_large, _conn} ->
355        raise RequestTooLargeError
356    end
357  end
358
359  defp reduce(conn, [], type, subtype, _params, pass, query_string_length, validate_utf8) do
360    if accepted_mime?(type, subtype, pass) do

Tried also uploading a single file that’s 20mb and still throws the same error. What did i miss?

Most Liked

LostKobrakai

LostKobrakai

For something smallish it does make sense to update the limits, but for larger uploads (imo start at ~30-50 MB) I’d suggest using streamed (e.g. LV uploads) or chunked uploads (e.g. tus protocol).

LostKobrakai

LostKobrakai

Even with a dedicated storage system there’s benefit in chunked uploads though – especially around the ability to reupload on failures.

kokolegorille

kokolegorille

Yes, but waffle is not the reason…

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