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lib.rs
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lib.rs
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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
use async_compression::tokio::write::BrotliEncoder;
use async_compression::tokio::write::GzipEncoder;
use cache_control::CacheControl;
use deno_core::error::custom_error;
use deno_core::error::AnyError;
use deno_core::futures::channel::mpsc;
use deno_core::futures::channel::oneshot;
use deno_core::futures::future::pending;
use deno_core::futures::future::select;
use deno_core::futures::future::Either;
use deno_core::futures::future::Pending;
use deno_core::futures::future::RemoteHandle;
use deno_core::futures::future::Shared;
use deno_core::futures::never::Never;
use deno_core::futures::ready;
use deno_core::futures::stream::Peekable;
use deno_core::futures::FutureExt;
use deno_core::futures::StreamExt;
use deno_core::futures::TryFutureExt;
use deno_core::op;
use deno_core::AsyncRefCell;
use deno_core::AsyncResult;
use deno_core::BufView;
use deno_core::ByteString;
use deno_core::CancelFuture;
use deno_core::CancelHandle;
use deno_core::CancelTryFuture;
use deno_core::OpState;
use deno_core::RcRef;
use deno_core::Resource;
use deno_core::ResourceId;
use deno_core::StringOrBuffer;
use deno_core::ZeroCopyBuf;
use deno_websocket::ws_create_server_stream;
use flate2::write::GzEncoder;
use flate2::Compression;
use fly_accept_encoding::Encoding;
use hyper::body::Bytes;
use hyper::body::HttpBody;
use hyper::body::SizeHint;
use hyper::header::HeaderName;
use hyper::header::HeaderValue;
use hyper::server::conn::Http;
use hyper::service::Service;
use hyper::Body;
use hyper::HeaderMap;
use hyper::Request;
use hyper::Response;
use serde::Serialize;
use std::borrow::Cow;
use std::cell::RefCell;
use std::cmp::min;
use std::error::Error;
use std::future::Future;
use std::io;
use std::io::Write;
use std::mem::replace;
use std::mem::take;
use std::pin::pin;
use std::pin::Pin;
use std::rc::Rc;
use std::sync::Arc;
use std::task::Context;
use std::task::Poll;
use tokio::io::AsyncRead;
use tokio::io::AsyncWrite;
use tokio::io::AsyncWriteExt;
use tokio::task::spawn_local;
use crate::reader_stream::ExternallyAbortableReaderStream;
use crate::reader_stream::ShutdownHandle;
pub mod compressible;
mod reader_stream;
deno_core::extension!(
deno_http,
deps = [deno_web, deno_net, deno_fetch, deno_websocket],
ops = [
op_http_accept,
op_http_write_headers,
op_http_headers,
op_http_write,
op_http_write_resource,
op_http_shutdown,
op_http_websocket_accept_header,
op_http_upgrade_websocket,
],
esm = ["01_http.js"],
);
pub enum HttpSocketAddr {
IpSocket(std::net::SocketAddr),
#[cfg(unix)]
UnixSocket(tokio::net::unix::SocketAddr),
}
impl From<std::net::SocketAddr> for HttpSocketAddr {
fn from(addr: std::net::SocketAddr) -> Self {
Self::IpSocket(addr)
}
}
#[cfg(unix)]
impl From<tokio::net::unix::SocketAddr> for HttpSocketAddr {
fn from(addr: tokio::net::unix::SocketAddr) -> Self {
Self::UnixSocket(addr)
}
}
struct HttpConnResource {
addr: HttpSocketAddr,
scheme: &'static str,
acceptors_tx: mpsc::UnboundedSender<HttpAcceptor>,
closed_fut: Shared<RemoteHandle<Result<(), Arc<hyper::Error>>>>,
cancel_handle: Rc<CancelHandle>, // Closes gracefully and cancels accept ops.
}
impl HttpConnResource {
fn new<S>(io: S, scheme: &'static str, addr: HttpSocketAddr) -> Self
where
S: AsyncRead + AsyncWrite + Unpin + Send + 'static,
{
let (acceptors_tx, acceptors_rx) = mpsc::unbounded::<HttpAcceptor>();
let service = HttpService::new(acceptors_rx);
let conn_fut = Http::new()
.with_executor(LocalExecutor)
.serve_connection(io, service)
.with_upgrades();
// When the cancel handle is used, the connection shuts down gracefully.
// No new HTTP streams will be accepted, but existing streams will be able
// to continue operating and eventually shut down cleanly.
let cancel_handle = CancelHandle::new_rc();
let shutdown_fut = never().or_cancel(&cancel_handle).fuse();
// A local task that polls the hyper connection future to completion.
let task_fut = async move {
let conn_fut = pin!(conn_fut);
let shutdown_fut = pin!(shutdown_fut);
let result = match select(conn_fut, shutdown_fut).await {
Either::Left((result, _)) => result,
Either::Right((_, mut conn_fut)) => {
conn_fut.as_mut().graceful_shutdown();
conn_fut.await
}
};
filter_enotconn(result).map_err(Arc::from)
};
let (task_fut, closed_fut) = task_fut.remote_handle();
let closed_fut = closed_fut.shared();
spawn_local(task_fut);
Self {
addr,
scheme,
acceptors_tx,
closed_fut,
cancel_handle,
}
}
// Accepts a new incoming HTTP request.
async fn accept(
self: &Rc<Self>,
) -> Result<Option<(HttpStreamResource, String, String)>, AnyError> {
let fut = async {
let (request_tx, request_rx) = oneshot::channel();
let (response_tx, response_rx) = oneshot::channel();
let acceptor = HttpAcceptor::new(request_tx, response_rx);
self.acceptors_tx.unbounded_send(acceptor).ok()?;
let request = request_rx.await.ok()?;
let accept_encoding = {
let encodings = fly_accept_encoding::encodings_iter(request.headers())
.filter(|r| {
matches!(r, Ok((Some(Encoding::Brotli | Encoding::Gzip), _)))
});
fly_accept_encoding::preferred(encodings)
.ok()
.flatten()
.unwrap_or(Encoding::Identity)
};
let method = request.method().to_string();
let url = req_url(&request, self.scheme, &self.addr);
let stream =
HttpStreamResource::new(self, request, response_tx, accept_encoding);
Some((stream, method, url))
};
async {
match fut.await {
Some(stream) => Ok(Some(stream)),
// Return the connection error, if any.
None => self.closed().map_ok(|_| None).await,
}
}
.try_or_cancel(&self.cancel_handle)
.await
}
/// A future that completes when this HTTP connection is closed or errors.
async fn closed(&self) -> Result<(), AnyError> {
self.closed_fut.clone().map_err(AnyError::from).await
}
}
impl Resource for HttpConnResource {
fn name(&self) -> Cow<str> {
"httpConn".into()
}
fn close(self: Rc<Self>) {
self.cancel_handle.cancel();
}
}
/// Creates a new HttpConn resource which uses `io` as its transport.
pub fn http_create_conn_resource<S, A>(
state: &mut OpState,
io: S,
addr: A,
scheme: &'static str,
) -> Result<ResourceId, AnyError>
where
S: AsyncRead + AsyncWrite + Unpin + Send + 'static,
A: Into<HttpSocketAddr>,
{
let conn = HttpConnResource::new(io, scheme, addr.into());
let rid = state.resource_table.add(conn);
Ok(rid)
}
/// An object that implements the `hyper::Service` trait, through which Hyper
/// delivers incoming HTTP requests.
struct HttpService {
acceptors_rx: Peekable<mpsc::UnboundedReceiver<HttpAcceptor>>,
}
impl HttpService {
fn new(acceptors_rx: mpsc::UnboundedReceiver<HttpAcceptor>) -> Self {
let acceptors_rx = acceptors_rx.peekable();
Self { acceptors_rx }
}
}
impl Service<Request<Body>> for HttpService {
type Response = Response<Body>;
type Error = oneshot::Canceled;
type Future = oneshot::Receiver<Response<Body>>;
fn poll_ready(
&mut self,
cx: &mut Context<'_>,
) -> Poll<Result<(), Self::Error>> {
let acceptors_rx = Pin::new(&mut self.acceptors_rx);
let result = ready!(acceptors_rx.poll_peek(cx))
.map(|_| ())
.ok_or(oneshot::Canceled);
Poll::Ready(result)
}
fn call(&mut self, request: Request<Body>) -> Self::Future {
let acceptor = self.acceptors_rx.next().now_or_never().flatten().unwrap();
acceptor.call(request)
}
}
/// A pair of one-shot channels which first transfer a HTTP request from the
/// Hyper service to the HttpConn resource, and then take the Response back to
/// the service.
struct HttpAcceptor {
request_tx: oneshot::Sender<Request<Body>>,
response_rx: oneshot::Receiver<Response<Body>>,
}
impl HttpAcceptor {
fn new(
request_tx: oneshot::Sender<Request<Body>>,
response_rx: oneshot::Receiver<Response<Body>>,
) -> Self {
Self {
request_tx,
response_rx,
}
}
fn call(self, request: Request<Body>) -> oneshot::Receiver<Response<Body>> {
let Self {
request_tx,
response_rx,
} = self;
request_tx
.send(request)
.map(|_| response_rx)
.unwrap_or_else(|_| oneshot::channel().1) // Make new canceled receiver.
}
}
/// A resource representing a single HTTP request/response stream.
pub struct HttpStreamResource {
conn: Rc<HttpConnResource>,
pub rd: AsyncRefCell<HttpRequestReader>,
wr: AsyncRefCell<HttpResponseWriter>,
accept_encoding: Encoding,
cancel_handle: CancelHandle,
size: SizeHint,
}
impl HttpStreamResource {
fn new(
conn: &Rc<HttpConnResource>,
request: Request<Body>,
response_tx: oneshot::Sender<Response<Body>>,
accept_encoding: Encoding,
) -> Self {
let size = request.body().size_hint();
Self {
conn: conn.clone(),
rd: HttpRequestReader::Headers(request).into(),
wr: HttpResponseWriter::Headers(response_tx).into(),
accept_encoding,
size,
cancel_handle: CancelHandle::new(),
}
}
}
impl Resource for HttpStreamResource {
fn name(&self) -> Cow<str> {
"httpStream".into()
}
fn read(self: Rc<Self>, limit: usize) -> AsyncResult<BufView> {
Box::pin(async move {
let mut rd = RcRef::map(&self, |r| &r.rd).borrow_mut().await;
let body = loop {
match &mut *rd {
HttpRequestReader::Headers(_) => {}
HttpRequestReader::Body(_, body) => break body,
HttpRequestReader::Closed => return Ok(BufView::empty()),
}
match take(&mut *rd) {
HttpRequestReader::Headers(request) => {
let (parts, body) = request.into_parts();
*rd = HttpRequestReader::Body(parts.headers, body.peekable());
}
_ => unreachable!(),
};
};
let fut = async {
let mut body = Pin::new(body);
loop {
match body.as_mut().peek_mut().await {
Some(Ok(chunk)) if !chunk.is_empty() => {
let len = min(limit, chunk.len());
let buf = chunk.split_to(len);
let view = BufView::from(buf);
break Ok(view);
}
// This unwrap is safe because `peek_mut()` returned `Some`, and thus
// currently has a peeked value that can be synchronously returned
// from `next()`.
//
// The future returned from `next()` is always ready, so we can
// safely call `await` on it without creating a race condition.
Some(_) => match body.as_mut().next().await.unwrap() {
Ok(chunk) => assert!(chunk.is_empty()),
Err(err) => break Err(AnyError::from(err)),
},
None => break Ok(BufView::empty()),
}
}
};
let cancel_handle = RcRef::map(&self, |r| &r.cancel_handle);
fut.try_or_cancel(cancel_handle).await
})
}
fn close(self: Rc<Self>) {
self.cancel_handle.cancel();
}
fn size_hint(&self) -> (u64, Option<u64>) {
(self.size.lower(), self.size.upper())
}
}
/// The read half of an HTTP stream.
pub enum HttpRequestReader {
Headers(Request<Body>),
Body(HeaderMap<HeaderValue>, Peekable<Body>),
Closed,
}
impl Default for HttpRequestReader {
fn default() -> Self {
Self::Closed
}
}
/// The write half of an HTTP stream.
enum HttpResponseWriter {
Headers(oneshot::Sender<Response<Body>>),
Body {
writer: Pin<Box<dyn tokio::io::AsyncWrite>>,
shutdown_handle: ShutdownHandle,
},
BodyUncompressed(BodyUncompressedSender),
Closed,
}
impl Default for HttpResponseWriter {
fn default() -> Self {
Self::Closed
}
}
struct BodyUncompressedSender(Option<hyper::body::Sender>);
impl BodyUncompressedSender {
fn sender(&mut self) -> &mut hyper::body::Sender {
// This is safe because we only ever take the sender out of the option
// inside of the shutdown method.
self.0.as_mut().unwrap()
}
fn shutdown(mut self) {
// take the sender out of self so that when self is dropped at the end of
// this block, it doesn't get aborted
self.0.take();
}
}
impl From<hyper::body::Sender> for BodyUncompressedSender {
fn from(sender: hyper::body::Sender) -> Self {
BodyUncompressedSender(Some(sender))
}
}
impl Drop for BodyUncompressedSender {
fn drop(&mut self) {
if let Some(sender) = self.0.take() {
sender.abort();
}
}
}
// We use a tuple instead of struct to avoid serialization overhead of the keys.
#[derive(Serialize)]
#[serde(rename_all = "camelCase")]
struct NextRequestResponse(
// stream_rid:
ResourceId,
// method:
// This is a String rather than a ByteString because reqwest will only return
// the method as a str which is guaranteed to be ASCII-only.
String,
// url:
String,
);
#[op]
async fn op_http_accept(
state: Rc<RefCell<OpState>>,
rid: ResourceId,
) -> Result<Option<NextRequestResponse>, AnyError> {
let conn = state.borrow().resource_table.get::<HttpConnResource>(rid)?;
match conn.accept().await {
Ok(Some((stream, method, url))) => {
let stream_rid =
state.borrow_mut().resource_table.add_rc(Rc::new(stream));
let r = NextRequestResponse(stream_rid, method, url);
Ok(Some(r))
}
Ok(None) => Ok(None),
Err(err) => Err(err),
}
}
fn req_url(
req: &hyper::Request<hyper::Body>,
scheme: &'static str,
addr: &HttpSocketAddr,
) -> String {
let host: Cow<str> = match addr {
HttpSocketAddr::IpSocket(addr) => {
if let Some(auth) = req.uri().authority() {
match addr.port() {
443 if scheme == "https" => Cow::Borrowed(auth.host()),
80 if scheme == "http" => Cow::Borrowed(auth.host()),
_ => Cow::Borrowed(auth.as_str()), // Includes port number.
}
} else if let Some(host) = req.uri().host() {
Cow::Borrowed(host)
} else if let Some(host) = req.headers().get("HOST") {
match host.to_str() {
Ok(host) => Cow::Borrowed(host),
Err(_) => Cow::Owned(
host
.as_bytes()
.iter()
.cloned()
.map(char::from)
.collect::<String>(),
),
}
} else {
Cow::Owned(addr.to_string())
}
}
// There is no standard way for unix domain socket URLs
// nginx and nodejs request use http:https://unix:[socket_path]:/ but it is not a valid URL
// httpie uses http+unix:https://[percent_encoding_of_path]/ which we follow
#[cfg(unix)]
HttpSocketAddr::UnixSocket(addr) => Cow::Owned(
percent_encoding::percent_encode(
addr
.as_pathname()
.and_then(|x| x.to_str())
.unwrap_or_default()
.as_bytes(),
percent_encoding::NON_ALPHANUMERIC,
)
.to_string(),
),
};
let path = req
.uri()
.path_and_query()
.map(|p| p.as_str())
.unwrap_or("/");
[scheme, ":https://", &host, path].concat()
}
fn req_headers(
header_map: &HeaderMap<HeaderValue>,
) -> Vec<(ByteString, ByteString)> {
// We treat cookies specially, because we don't want them to get them
// mangled by the `Headers` object in JS. What we do is take all cookie
// headers and concat them into a single cookie header, separated by
// semicolons.
let cookie_sep = "; ".as_bytes();
let mut cookies = vec![];
let mut headers = Vec::with_capacity(header_map.len());
for (name, value) in header_map.iter() {
if name == hyper::header::COOKIE {
cookies.push(value.as_bytes());
} else {
let name: &[u8] = name.as_ref();
let value = value.as_bytes();
headers.push((name.into(), value.into()));
}
}
if !cookies.is_empty() {
headers.push(("cookie".into(), cookies.join(cookie_sep).into()));
}
headers
}
#[op]
async fn op_http_write_headers(
state: Rc<RefCell<OpState>>,
rid: u32,
status: u16,
headers: Vec<(ByteString, ByteString)>,
data: Option<StringOrBuffer>,
) -> Result<(), AnyError> {
let stream = state
.borrow_mut()
.resource_table
.get::<HttpStreamResource>(rid)?;
// Track supported encoding
let encoding = stream.accept_encoding;
let mut builder = Response::builder();
// SAFETY: can not fail, since a fresh Builder is non-errored
let hmap = unsafe { builder.headers_mut().unwrap_unchecked() };
// Add headers
hmap.reserve(headers.len() + 2);
for (k, v) in headers.into_iter() {
let v: Vec<u8> = v.into();
hmap.append(
HeaderName::try_from(k.as_slice())?,
HeaderValue::try_from(v)?,
);
}
ensure_vary_accept_encoding(hmap);
let accepts_compression =
matches!(encoding, Encoding::Brotli | Encoding::Gzip);
let compressing = accepts_compression
&& (matches!(data, Some(ref data) if data.len() > 20) || data.is_none())
&& should_compress(hmap);
if compressing {
weaken_etag(hmap);
// Drop 'content-length' header. Hyper will update it using compressed body.
hmap.remove(hyper::header::CONTENT_LENGTH);
// Content-Encoding header
hmap.insert(
hyper::header::CONTENT_ENCODING,
HeaderValue::from_static(match encoding {
Encoding::Brotli => "br",
Encoding::Gzip => "gzip",
_ => unreachable!(), // Forbidden by accepts_compression
}),
);
}
let (new_wr, body) = http_response(data, compressing, encoding)?;
let body = builder.status(status).body(body)?;
let mut old_wr = RcRef::map(&stream, |r| &r.wr).borrow_mut().await;
let response_tx = match replace(&mut *old_wr, new_wr) {
HttpResponseWriter::Headers(response_tx) => response_tx,
_ => return Err(http_error("response headers already sent")),
};
match response_tx.send(body) {
Ok(_) => Ok(()),
Err(_) => {
stream.conn.closed().await?;
Err(http_error("connection closed while sending response"))
}
}
}
#[op]
fn op_http_headers(
state: &mut OpState,
rid: u32,
) -> Result<Vec<(ByteString, ByteString)>, AnyError> {
let stream = state.resource_table.get::<HttpStreamResource>(rid)?;
let rd = RcRef::map(&stream, |r| &r.rd)
.try_borrow()
.ok_or_else(|| http_error("already in use"))?;
match &*rd {
HttpRequestReader::Headers(request) => Ok(req_headers(request.headers())),
HttpRequestReader::Body(headers, _) => Ok(req_headers(headers)),
_ => unreachable!(),
}
}
fn http_response(
data: Option<StringOrBuffer>,
compressing: bool,
encoding: Encoding,
) -> Result<(HttpResponseWriter, hyper::Body), AnyError> {
match data {
Some(data) if compressing => match encoding {
Encoding::Brotli => {
// quality level 6 is based on google's nginx default value for
// on-the-fly compression
// https://github.com/google/ngx_brotli#brotli_comp_level
// lgwin 22 is equivalent to brotli window size of (2**22)-16 bytes
// (~4MB)
let mut writer = brotli::CompressorWriter::new(Vec::new(), 4096, 6, 22);
writer.write_all(&data)?;
Ok((HttpResponseWriter::Closed, writer.into_inner().into()))
}
Encoding::Gzip => {
// Gzip, after level 1, doesn't produce significant size difference.
// Probably the reason why nginx's default gzip compression level is
// 1.
// https://nginx.org/en/docs/http/ngx_http_gzip_module.html#gzip_comp_level
let mut writer = GzEncoder::new(Vec::new(), Compression::new(1));
writer.write_all(&data)?;
Ok((HttpResponseWriter::Closed, writer.finish()?.into()))
}
_ => unreachable!(), // forbidden by accepts_compression
},
Some(data) => {
// If a buffer was passed, but isn't compressible, we use it to
// construct a response body.
Ok((HttpResponseWriter::Closed, Bytes::from(data).into()))
}
None if compressing => {
// Create a one way pipe that implements tokio's async io traits. To do
// this we create a [tokio::io::DuplexStream], but then throw away one
// of the directions to create a one way pipe.
let (a, b) = tokio::io::duplex(64 * 1024);
let (reader, _) = tokio::io::split(a);
let (_, writer) = tokio::io::split(b);
let writer: Pin<Box<dyn tokio::io::AsyncWrite>> = match encoding {
Encoding::Brotli => Box::pin(BrotliEncoder::new(writer)),
Encoding::Gzip => Box::pin(GzipEncoder::new(writer)),
_ => unreachable!(), // forbidden by accepts_compression
};
let (stream, shutdown_handle) =
ExternallyAbortableReaderStream::new(reader);
Ok((
HttpResponseWriter::Body {
writer,
shutdown_handle,
},
Body::wrap_stream(stream),
))
}
None => {
let (body_tx, body_rx) = Body::channel();
Ok((
HttpResponseWriter::BodyUncompressed(body_tx.into()),
body_rx,
))
}
}
}
// If user provided a ETag header for uncompressed data, we need to
// ensure it is a Weak Etag header ("W/").
fn weaken_etag(hmap: &mut hyper::HeaderMap) {
if let Some(etag) = hmap.get_mut(hyper::header::ETAG) {
if !etag.as_bytes().starts_with(b"W/") {
let mut v = Vec::with_capacity(etag.as_bytes().len() + 2);
v.extend(b"W/");
v.extend(etag.as_bytes());
*etag = v.try_into().unwrap();
}
}
}
// Set Vary: Accept-Encoding header for direct body response.
// Note: we set the header irrespective of whether or not we compress the data
// to make sure cache services do not serve uncompressed data to clients that
// support compression.
fn ensure_vary_accept_encoding(hmap: &mut hyper::HeaderMap) {
if let Some(v) = hmap.get_mut(hyper::header::VARY) {
if let Ok(s) = v.to_str() {
if !s.to_lowercase().contains("accept-encoding") {
*v = format!("Accept-Encoding, {s}").try_into().unwrap()
}
return;
}
}
hmap.insert(
hyper::header::VARY,
HeaderValue::from_static("Accept-Encoding"),
);
}
fn should_compress(headers: &hyper::HeaderMap) -> bool {
// skip compression if the cache-control header value is set to "no-transform" or not utf8
fn cache_control_no_transform(headers: &hyper::HeaderMap) -> Option<bool> {
let v = headers.get(hyper::header::CACHE_CONTROL)?;
let s = match std::str::from_utf8(v.as_bytes()) {
Ok(s) => s,
Err(_) => return Some(true),
};
let c = CacheControl::from_value(s)?;
Some(c.no_transform)
}
// we skip compression if the `content-range` header value is set, as it
// indicates the contents of the body were negotiated based directly
// with the user code and we can't compress the response
let content_range = headers.contains_key(hyper::header::CONTENT_RANGE);
// assume body is already compressed if Content-Encoding header present, thus avoid recompressing
let is_precompressed = headers.contains_key(hyper::header::CONTENT_ENCODING);
!content_range
&& !is_precompressed
&& !cache_control_no_transform(headers).unwrap_or_default()
&& headers
.get(hyper::header::CONTENT_TYPE)
.map(compressible::is_content_compressible)
.unwrap_or_default()
}
#[op]
async fn op_http_write_resource(
state: Rc<RefCell<OpState>>,
rid: ResourceId,
stream: ResourceId,
) -> Result<(), AnyError> {
let http_stream = state
.borrow()
.resource_table
.get::<HttpStreamResource>(rid)?;
let mut wr = RcRef::map(&http_stream, |r| &r.wr).borrow_mut().await;
let resource = state.borrow().resource_table.get_any(stream)?;
loop {
match *wr {
HttpResponseWriter::Headers(_) => {
return Err(http_error("no response headers"))
}
HttpResponseWriter::Closed => {
return Err(http_error("response already completed"))
}
_ => {}
};
let view = resource.clone().read(64 * 1024).await?; // 64KB
if view.is_empty() {
break;
}
match &mut *wr {
HttpResponseWriter::Body { writer, .. } => {
let mut result = writer.write_all(&view).await;
if result.is_ok() {
result = writer.flush().await;
}
if let Err(err) = result {
assert_eq!(err.kind(), std::io::ErrorKind::BrokenPipe);
// Don't return "broken pipe", that's an implementation detail.
// Pull up the failure associated with the transport connection instead.
http_stream.conn.closed().await?;
// If there was no connection error, drop body_tx.
*wr = HttpResponseWriter::Closed;
}
}
HttpResponseWriter::BodyUncompressed(body) => {
let bytes = Bytes::from(view);
if let Err(err) = body.sender().send_data(bytes).await {
assert!(err.is_closed());
// Pull up the failure associated with the transport connection instead.
http_stream.conn.closed().await?;
// If there was no connection error, drop body_tx.
*wr = HttpResponseWriter::Closed;
}
}
_ => unreachable!(),
};
}
Ok(())
}
#[op]
async fn op_http_write(
state: Rc<RefCell<OpState>>,
rid: ResourceId,
buf: ZeroCopyBuf,
) -> Result<(), AnyError> {
let stream = state
.borrow()
.resource_table
.get::<HttpStreamResource>(rid)?;
let mut wr = RcRef::map(&stream, |r| &r.wr).borrow_mut().await;
match &mut *wr {
HttpResponseWriter::Headers(_) => Err(http_error("no response headers")),
HttpResponseWriter::Closed => Err(http_error("response already completed")),
HttpResponseWriter::Body { writer, .. } => {
let mut result = writer.write_all(&buf).await;
if result.is_ok() {
result = writer.flush().await;
}
match result {
Ok(_) => Ok(()),
Err(err) => {
assert_eq!(err.kind(), std::io::ErrorKind::BrokenPipe);
// Don't return "broken pipe", that's an implementation detail.
// Pull up the failure associated with the transport connection instead.
stream.conn.closed().await?;
// If there was no connection error, drop body_tx.
*wr = HttpResponseWriter::Closed;
Err(http_error("response already completed"))
}
}
}
HttpResponseWriter::BodyUncompressed(body) => {
let bytes = Bytes::from(buf);
match body.sender().send_data(bytes).await {
Ok(_) => Ok(()),
Err(err) => {
assert!(err.is_closed());
// Pull up the failure associated with the transport connection instead.
stream.conn.closed().await?;
// If there was no connection error, drop body_tx.
*wr = HttpResponseWriter::Closed;
Err(http_error("response already completed"))
}
}
}
}
}
/// Gracefully closes the write half of the HTTP stream. Note that this does not
/// remove the HTTP stream resource from the resource table; it still has to be
/// closed with `Deno.core.close()`.
#[op]
async fn op_http_shutdown(
state: Rc<RefCell<OpState>>,
rid: ResourceId,
) -> Result<(), AnyError> {
let stream = state
.borrow()
.resource_table
.get::<HttpStreamResource>(rid)?;
let mut wr = RcRef::map(&stream, |r| &r.wr).borrow_mut().await;
let wr = take(&mut *wr);
match wr {
HttpResponseWriter::Body {
mut writer,
shutdown_handle,
} => {
shutdown_handle.shutdown();
match writer.shutdown().await {
Ok(_) => {}
Err(err) => {
assert_eq!(err.kind(), std::io::ErrorKind::BrokenPipe);
// Don't return "broken pipe", that's an implementation detail.
// Pull up the failure associated with the transport connection instead.
stream.conn.closed().await?;
}
}
}
HttpResponseWriter::BodyUncompressed(body) => {
body.shutdown();
}
_ => {}
};
Ok(())
}
#[op]
fn op_http_websocket_accept_header(key: String) -> Result<String, AnyError> {
let digest = ring::digest::digest(
&ring::digest::SHA1_FOR_LEGACY_USE_ONLY,
format!("{key}258EAFA5-E914-47DA-95CA-C5AB0DC85B11").as_bytes(),
);
Ok(base64::encode(digest))
}
struct UpgradedStream(hyper::upgrade::Upgraded);
impl tokio::io::AsyncRead for UpgradedStream {
fn poll_read(
self: Pin<&mut Self>,
cx: &mut Context,
buf: &mut tokio::io::ReadBuf,
) -> std::task::Poll<std::result::Result<(), std::io::Error>> {
Pin::new(&mut self.get_mut().0).poll_read(cx, buf)
}
}
impl tokio::io::AsyncWrite for UpgradedStream {
fn poll_write(
self: Pin<&mut Self>,
cx: &mut Context,
buf: &[u8],
) -> std::task::Poll<Result<usize, std::io::Error>> {
Pin::new(&mut self.get_mut().0).poll_write(cx, buf)
}
fn poll_flush(
self: Pin<&mut Self>,
cx: &mut Context,
) -> std::task::Poll<Result<(), std::io::Error>> {
Pin::new(&mut self.get_mut().0).poll_flush(cx)
}
fn poll_shutdown(
self: Pin<&mut Self>,
cx: &mut Context,
) -> std::task::Poll<Result<(), std::io::Error>> {
Pin::new(&mut self.get_mut().0).poll_shutdown(cx)
}
}
impl deno_websocket::Upgraded for UpgradedStream {}
#[op]
async fn op_http_upgrade_websocket(
state: Rc<RefCell<OpState>>,
rid: ResourceId,
) -> Result<ResourceId, AnyError> {
let stream = state
.borrow_mut()
.resource_table
.get::<HttpStreamResource>(rid)?;
let mut rd = RcRef::map(&stream, |r| &r.rd).borrow_mut().await;
let request = match &mut *rd {
HttpRequestReader::Headers(request) => request,
_ => {
return Err(http_error("cannot upgrade because request body was used"))
}
};
let transport = hyper::upgrade::on(request).await?;
let ws_rid =
ws_create_server_stream(&state, Box::pin(UpgradedStream(transport)))
.await?;
Ok(ws_rid)
}