// end delimiter for the metadata not yet located, but in here somewhere
initial: Box<[u8]>,
initial_remaining: usize,
+ length_hint: usize,
body: hyper::body::Body,
- reply: tokio::sync::oneshot::Sender<WebResponse>,
+ boundary_finder: multipart::BoundaryFinder,
+ reply_to: tokio::sync::oneshot::Sender<WebResponse>,
+ warnings: Warnings,
}
/// Reply from client task to hyper worker pool task
-type WebResponse = Result<WebResponseData, AE>;
+#[allow(dead_code)] // xxx
+struct WebResponse {
+ warnings: Warnings,
+ data: Result<WebResponseData, AE>,
+}
+
type WebResponseData = ();
async fn handle(
match async {
+ let get_header = |hn: &str| {
+ let mut values = req.headers().get_all(hn).iter();
+ let v = values.next().ok_or_else(|| anyhow!("missing {}", hn))?;
+ if values.next().is_some() { throw!(anyhow!("multiple {}!", hn)); }
+ let v = v.to_str().context(anyhow!("interpret {} as UTF-8", hn))?;
+ Ok::<_,AE>(v)
+ };
+
let mkboundary = |b: &'_ _| format!("\n--{}", b).into_bytes();
let boundary = match (||{
- let mut ctypes = req.headers().get_all("Content-Type").iter();
- let t = ctypes.next().ok_or_else(|| anyhow!("missing Content-Type"))?;
- if ctypes.next().is_some() { throw!(anyhow!("several Content-Type")) }
- let t = t.to_str().context("interpret Content-Type as utf-8")?;
+ let t = get_header("Content-Type")?;
let t: mime::Mime = t.parse().context("parse Content-Type")?;
if t.type_() != "multipart" { throw!(anyhow!("not multipart/")) }
let b = mime::BOUNDARY;
},
};
+ let length_hint: usize = (||{
+ let clength = get_header("Content-Length")?;
+ let clength = clength.parse().context("parse Content-Length")?;
+ Ok::<_,AE>(clength)
+ })().unwrap_or_else(
+ |e| { let _ = warnings.add(&e.wrap_err("parsing Content-Length")); 0 }
+ );
+
let mut body = req.into_body();
- let initial = match read_limited_bytes(METADATA_MAX_LEN, &mut body).await {
+ let initial = match read_limited_bytes(
+ METADATA_MAX_LEN, default(), length_hint, &mut body
+ ).await {
Ok(all) => all,
Err(ReadLimitedError::Truncated { sofar,.. }) => sofar,
Err(ReadLimitedError::Hyper(e)) => throw!(e),
};
- let finder = memmem::Finder::new(&boundary);
- let mut find_iter = finder.find_iter(&initial);
+ let boundary_finder = memmem::Finder::new(&boundary);
+ let mut boundary_iter = boundary_finder.find_iter(&initial);
let start = if initial.starts_with(&boundary[1..]) { boundary.len()-1 }
- else if let Some(start) = find_iter.next() { start + boundary.len() }
+ else if let Some(start) = boundary_iter.next() { start + boundary.len() }
else { throw!(anyhow!("initial boundary not found")) };
- let comp = multipart::process_component
+ let comp = multipart::process_boundary
(&mut warnings, &initial[start..], PartName::m)?
.ok_or_else(|| anyhow!(r#"no "m" component"#))?;
r#"first multipart component must be name="m""#
)) }
- let mut meta = MetadataFieldIterator::new(comp.payload_start);
+ let mut meta = MetadataFieldIterator::new(comp.payload);
let client: ClientName = meta.need_parse().context("client addr")?;
//eprintln!("boundary={:?} start={} name={:?} client={}",
// boundary, start, &comp.name, &client.ic);
- let (reply, reply_recv) = tokio::sync::oneshot::channel();
+ let (reply_to, reply_recv) = tokio::sync::oneshot::channel();
+ trace!("{} request xxx={}", &client.ic, initial.len());
let wreq = WebRequest {
initial,
initial_remaining,
+ length_hint,
+ boundary_finder: boundary_finder.into_owned(),
body,
- reply
+ warnings: mem::take(&mut warnings),
+ reply_to
};
- trace!("{} request", &client.ic);
client.web.try_send(wreq)
.map_err(|_| anyhow!("client task shut down!"))?;
let reply: WebResponse = reply_recv.await?;
+ warnings = reply.warnings;
- reply
+ reply.data
}.await {
Ok(()) => {
},
Ok(hyper::Response::new(hyper::Body::from("Hello World")))
}
-async fn run_client(_ic: Arc<InstanceConfig>,
+#[allow(unused_variables)] // xxx
+#[allow(unused_mut)] // xxx
+async fn run_client(ic: Arc<InstanceConfig>,
mut web: mpsc::Receiver<WebRequest>)
-> Result<Void, AE>
{
struct Outstanding {
- reply: tokio::sync::oneshot::Sender<WebResponse>,
+ reply_to: tokio::sync::oneshot::Sender<WebResponse>,
max_requests_outstanding: u32,
}
let mut outstanding: VecDeque<Outstanding> = default();
let downbound: VecDeque<(/*xxx*/)> = default();
+ let try_send_response = |
+ reply_to: tokio::sync::oneshot::Sender<WebResponse>,
+ response: WebResponse
+ | {
+ reply_to.send(response)
+ .unwrap_or_else(|_: WebResponse| () /* oh dear */ /* xxx trace? */);
+ };
+
loop {
if let Some(ret) = {
if ! downbound.is_empty() {
None
}
} {
- ret.reply.send(Ok(() /* dummy */))
- .unwrap_or_else(|_: WebResponse| () /* oh dear */ /* xxx trace? */);
+ let response = WebResponse {
+ data: Ok(()),
+ warnings: default(),
+ };
+
+ try_send_response(ret.reply_to, response);
}
select!{
req = web.recv() =>
{
- let req = req.ok_or_else(|| anyhow!("webservers all shut down!"))?;
- outstanding.push_back(Outstanding {
- reply: req.reply,
- max_requests_outstanding: 42, // xxx
- });
+ let WebRequest {
+ initial, initial_remaining, length_hint, mut body,
+ boundary_finder,
+ reply_to, warnings,
+ } = req.ok_or_else(|| anyhow!("webservers all shut down!"))?;
+
+ match async {
+
+ let initial_used = initial.len() - initial_remaining;
+
+ let whole_request = read_limited_bytes(
+ ic.max_batch_up.sat(),
+ initial,
+ length_hint,
+ &mut body
+ ).await.context("read request body")?;
+
+ let (meta, comps) =
+ multipart::ComponentIterator::resume_mid_component(
+ &whole_request[initial_used..],
+ boundary_finder
+ ).context("resume parsing body, after auth checks")?;
+
+ let mut meta = MetadataFieldIterator::new(&meta);
+
+ macro_rules! meta {
+ { $v:ident, ( $( $badcmp:tt )? ), $ret:expr,
+ let $server:ident, $client:ident $($code:tt)*
+ } => {
+ let $v = (||{
+ let $server = ic.$v;
+ let $client $($code)*
+ $(
+ if $client $badcmp $server {
+ throw!(anyhow!("mismatch: client={:?} {} server={:?}",
+ $client, stringify!($badcmp), $server));
+ }
+ )?
+ Ok::<_,AE>($ret)
+ })().context(stringify!($v))?;
+ dbg!(&$v);
+ }
+ }
+
+ meta!{
+ target_requests_outstanding, ( != ), client,
+ let server, client: u32 = meta.need_parse()?;
+ }
+
+ meta!{
+ http_timeout, ( > ), client,
+ let server, client = Duration::from_secs(meta.need_parse()?);
+ }
+
+ meta!{
+ max_batch_down, (), min(client, server),
+ let server, client: u32 = meta.parse()?.unwrap_or(server);
+ }
+
+ meta!{
+ max_batch_up, ( > ), client,
+ let server, client = meta.parse()?.unwrap_or(server);
+ }
+
+ Ok::<_,AE>(())
+ }.await {
+ Ok(()) => outstanding.push_back(Outstanding {
+ reply_to: reply_to,
+ max_requests_outstanding: 42, // xxx
+ }),
+ Err(e) => {
+ try_send_response(reply_to, WebResponse {
+ data: Err(e),
+ warnings,
+ });
+ },
+ }
}
}
}
~ian / hippotat.git / blobdiff