Currently its failing with nginx reverse proxy in the docker image with:

2022/06/17 08:23:35 [error] 201#201: *4 sendfile() failed (32: Broken pipe) while sending request to upstream, client: 172.17.0.1, server: aldrune.com, request: "POST /wiki1/api/sessionaudio/ HTTP/1.1", upstream: "http://127.0.0.1:8080/sessionaudio/", host: "localhost", referrer: "http://localhost/wiki2/sessionaudio/Aldrune/create"

No idea where that issue comes from.
In other frameworks it's an issue with buffer size.
See:
https://stackoverflow.com/questions/57522982/nginx-502-errors-consistently-with-no-application-errors
https://stackoverflow.com/questions/35725438/sendfile-failed-32-broken-pipe-while-sending-request-to-upstream-nginx-502

I did set client_body_buffer_size to 1 Mb and client_max_body_size to 2 Gb, to no avail.

There is also a source that suggests this might be a https issue:
https://www.bigbinary.com/blog/not-using-https-might-be-breaking-file-uploads
However, I do not (yet) use HTTPS and my server isn't enforcing it, so that can't be the problem

from nimstoryfont.

As of commit e21f5cf this should be fixed.
However, locally the upload takes around 4 minutes now, with upload progress events claiming the upload finishes within seconds.
The current method also starts sucking up immense amounts of memory (> 500 Mb) during this process and eats a lot of CPU power.

This appears to be a general issue according to xflywind on discord:

It seems to be a common problem for frameworks based asynchttpserver and httpbeast: https://forum.nim-lang.org/t/5829 I'm going to wrap/rewrite h2o after fixing the vm bugs (nim-lang/Nim#19902)

What's left is waiting for xflywind to fix this issue so that the file upload works fine and fast

from nimstoryfont.

Surprisingly, it's working alright as long as you compile with httpx.
This is good enough for now

Tasks

task release, "Build a production release":
--verbose
--forceBuild:on
--opt:speed
--define:release
--threads:on
--mm:orc
--deepcopy:on
--define:lto
--define:ssl
#--define:usestd # stdlib asynchttpserver
--hints:off
--outdir:"."
setCommand "c", "src/nimstoryfont.nim"

from nimstoryfont.