8 releases

0.5.0 Apr 2, 2020
0.5.0-rc.5 Apr 1, 2020
0.5.0-rc.4 Mar 31, 2020

#9 in #koa

36 downloads per month

MIT license

1.5K SLoC

Stable Test codecov Rust Docs Crate version Download Version License: MIT


This crate provides a wrapper for actix_multipart::Multipart, which may cause heavy dependencies.

It won't be used as a module of crate roa until implementing a cleaner Multipart.


use async_std::fs::File;
use async_std::io;
use async_std::path::Path;
use futures::stream::TryStreamExt;
use futures::StreamExt;
use roa::http::StatusCode;
use roa::tcp::Listener;
use roa::router::{Router, post};
use roa::{throw, App, Context};
use roa_multipart::MultipartForm;
use std::error::Error as StdError;

async fn post_file(ctx: &mut Context) -> roa::Result {
    let mut form = ctx.form();
    while let Some(item) = form.next().await {
        let field = item?;
        match field.content_disposition() {
            None => throw!(StatusCode::BAD_REQUEST, "content disposition not set"),
            Some(content_disposition) => match content_disposition.get_filename() {
                None => continue, // ignore non-file field
                Some(filename) => {
                    let path = Path::new("./upload");
                    let mut file = File::create(path.join(filename)).await?;
                    io::copy(&mut field.into_async_read(), &mut file).await?;

async fn main() -> Result<(), Box<dyn StdError>> {
    let router = Router::new().on("/file", post(post_file));
    let (addr, server) = App::new().end(router.routes("/")?).run()?;


~591K SLoC