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use std::{convert::Infallible, net::SocketAddr};
use bytes::Bytes;
use futures_util::StreamExt;
use http_body_util::{BodyStream, Full};
use hyper::{body::Incoming, header::CONTENT_TYPE, Request, Response, StatusCode};
// Import the multer types.
use multer::Multipart;
// A handler for incoming requests.
async fn handle(req: Request<Incoming>) -> Result<Response<Full<Bytes>>, Infallible> {
// Extract the `multipart/form-data` boundary from the headers.
let boundary = req
.headers()
.get(CONTENT_TYPE)
.and_then(|ct| ct.to_str().ok())
.and_then(|ct| multer::parse_boundary(ct).ok());
// Send `BAD_REQUEST` status if the content-type is not multipart/form-data.
if boundary.is_none() {
return Ok(Response::builder()
.status(StatusCode::BAD_REQUEST)
.body(Full::from("BAD REQUEST"))
.unwrap());
}
// Process the multipart e.g. you can store them in files.
if let Err(err) = process_multipart(req.into_body(), boundary.unwrap()).await {
return Ok(Response::builder()
.status(StatusCode::INTERNAL_SERVER_ERROR)
.body(Full::from(format!("INTERNAL SERVER ERROR: {}", err)))
.unwrap());
}
Ok(Response::new(Full::from("Success")))
}
// Process the request body as multipart/form-data.
async fn process_multipart(body: Incoming, boundary: String) -> multer::Result<()> {
// Convert the body into a stream of data frames.
let body_stream = BodyStream::new(body)
.filter_map(|result| async move { result.map(|frame| frame.into_data().ok()).transpose() });
// Create a Multipart instance from the request body.
let mut multipart = Multipart::new(body_stream, boundary);
// Iterate over the fields, `next_field` method will return the next field if
// available.
while let Some(mut field) = multipart.next_field().await? {
// Get the field name.
let name = field.name();
// Get the field's filename if provided in "Content-Disposition" header.
let file_name = field.file_name();
// Get the "Content-Type" header as `mime::Mime` type.
let content_type = field.content_type();
println!(
"Name: {:?}, FileName: {:?}, Content-Type: {:?}",
name, file_name, content_type
);
// Process the field data chunks e.g. store them in a file.
let mut field_bytes_len = 0;
while let Some(field_chunk) = field.chunk().await? {
// Do something with field chunk.
field_bytes_len += field_chunk.len();
}
println!("Field Bytes Length: {:?}", field_bytes_len);
}
Ok(())
}
#[tokio::main]
async fn main() {
let addr = SocketAddr::from(([127, 0, 0, 1], 3000));
let listener = tokio::net::TcpListener::bind(addr).await.unwrap();
println!("Server running at: {}", addr);
let service = hyper::service::service_fn(handle);
loop {
let (socket, _remote_addr) = listener.accept().await.unwrap();
let socket = hyper_util::rt::TokioIo::new(socket);
tokio::spawn(async move {
if let Err(e) = hyper::server::conn::http1::Builder::new()
.serve_connection(socket, service)
.await
{
eprintln!("server error: {}", e);
}
});
}
}
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