mirror of
https://github.com/denoland/deno
synced 2024-09-19 08:02:31 +00:00
695 lines
18 KiB
Rust
695 lines
18 KiB
Rust
// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
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use deno_core::error::bad_resource_id;
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use deno_core::error::null_opbuf;
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use deno_core::error::type_error;
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use deno_core::error::AnyError;
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use deno_core::futures::future::poll_fn;
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use deno_core::futures::FutureExt;
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use deno_core::futures::Stream;
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use deno_core::futures::StreamExt;
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use deno_core::include_js_files;
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use deno_core::op_async;
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use deno_core::op_sync;
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use deno_core::AsyncRefCell;
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use deno_core::ByteString;
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use deno_core::CancelHandle;
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use deno_core::CancelTryFuture;
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use deno_core::Extension;
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use deno_core::OpState;
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use deno_core::RcRef;
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use deno_core::Resource;
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use deno_core::ResourceId;
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use deno_core::ZeroCopyBuf;
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use hyper::body::HttpBody;
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use hyper::http;
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use hyper::server::conn::Http;
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use hyper::service::Service as HyperService;
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use hyper::Body;
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use hyper::Request;
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use hyper::Response;
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use serde::Deserialize;
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use serde::Serialize;
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use std::borrow::Cow;
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use std::cell::RefCell;
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use std::future::Future;
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use std::net::SocketAddr;
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use std::pin::Pin;
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use std::rc::Rc;
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use std::task::Context;
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use std::task::Poll;
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use tokio::io::AsyncRead;
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use tokio::io::AsyncReadExt;
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use tokio::io::AsyncWrite;
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use tokio::sync::oneshot;
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use tokio_util::io::StreamReader;
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pub fn init() -> Extension {
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Extension::builder()
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.js(include_js_files!(
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prefix "deno:ext/http",
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"01_http.js",
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))
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.ops(vec![
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("op_http_request_next", op_async(op_http_request_next)),
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("op_http_request_read", op_async(op_http_request_read)),
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("op_http_response", op_async(op_http_response)),
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("op_http_response_write", op_async(op_http_response_write)),
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("op_http_response_close", op_async(op_http_response_close)),
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(
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"op_http_websocket_accept_header",
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op_sync(op_http_websocket_accept_header),
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),
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(
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"op_http_upgrade_websocket",
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op_async(op_http_upgrade_websocket),
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),
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])
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.build()
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}
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struct ServiceInner {
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request: Request<Body>,
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response_tx: oneshot::Sender<Response<Body>>,
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}
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#[derive(Clone, Default)]
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struct Service {
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inner: Rc<RefCell<Option<ServiceInner>>>,
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waker: Rc<deno_core::futures::task::AtomicWaker>,
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}
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impl HyperService<Request<Body>> for Service {
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type Response = Response<Body>;
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type Error = http::Error;
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#[allow(clippy::type_complexity)]
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type Future =
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Pin<Box<dyn Future<Output = Result<Self::Response, Self::Error>>>>;
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fn poll_ready(
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&mut self,
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_cx: &mut Context<'_>,
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) -> Poll<Result<(), Self::Error>> {
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if self.inner.borrow().is_some() {
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Poll::Pending
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} else {
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Poll::Ready(Ok(()))
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}
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}
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fn call(&mut self, req: Request<Body>) -> Self::Future {
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let (resp_tx, resp_rx) = oneshot::channel();
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self.inner.borrow_mut().replace(ServiceInner {
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request: req,
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response_tx: resp_tx,
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});
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async move { Ok(resp_rx.await.unwrap()) }.boxed_local()
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}
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}
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type ConnFuture = Pin<Box<dyn Future<Output = hyper::Result<()>>>>;
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struct Conn {
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scheme: &'static str,
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addr: SocketAddr,
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conn: Rc<RefCell<ConnFuture>>,
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}
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struct ConnResource {
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hyper_connection: Conn,
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deno_service: Service,
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cancel: CancelHandle,
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}
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impl ConnResource {
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// TODO(ry) impl Future for ConnResource?
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fn poll(&self, cx: &mut Context<'_>) -> Poll<Result<(), AnyError>> {
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self
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.hyper_connection
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.conn
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.borrow_mut()
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.poll_unpin(cx)
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.map_err(AnyError::from)
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}
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}
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impl Resource for ConnResource {
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fn name(&self) -> Cow<str> {
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"httpConnection".into()
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}
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fn close(self: Rc<Self>) {
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self.cancel.cancel()
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}
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}
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// We use a tuple instead of struct to avoid serialization overhead of the keys.
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#[derive(Serialize)]
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#[serde(rename_all = "camelCase")]
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struct NextRequestResponse(
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// request_rid:
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Option<ResourceId>,
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// response_sender_rid:
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ResourceId,
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// method:
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// This is a String rather than a ByteString because reqwest will only return
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// the method as a str which is guaranteed to be ASCII-only.
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String,
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// headers:
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Vec<(ByteString, ByteString)>,
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// url:
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String,
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);
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async fn op_http_request_next(
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state: Rc<RefCell<OpState>>,
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conn_rid: ResourceId,
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_: (),
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) -> Result<Option<NextRequestResponse>, AnyError> {
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let conn_resource = state
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.borrow()
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.resource_table
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.get::<ConnResource>(conn_rid)?;
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let cancel = RcRef::map(conn_resource.clone(), |r| &r.cancel);
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poll_fn(|cx| {
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conn_resource.deno_service.waker.register(cx.waker());
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// Check if conn is open/close/errored
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let (conn_closed, conn_result) = match conn_resource.poll(cx) {
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Poll::Pending => (false, Ok(())),
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Poll::Ready(Ok(())) => (true, Ok(())),
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Poll::Ready(Err(e)) => {
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if should_ignore_error(&e) {
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(true, Ok(()))
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} else {
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(true, Err(e))
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}
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}
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};
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// Drop conn resource if closed
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if conn_closed {
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// TODO(ry) close RequestResource associated with connection
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// TODO(ry) close ResponseBodyResource associated with connection
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// try to close ConnResource, but don't unwrap as it might
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// already be closed
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let _ = state
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.borrow_mut()
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.resource_table
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.take::<ConnResource>(conn_rid);
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// Fail with err if unexpected conn error, early return None otherwise
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return Poll::Ready(conn_result.map(|_| None));
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}
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if let Some(inner) = conn_resource.deno_service.inner.borrow_mut().take() {
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let Conn { scheme, addr, .. } = conn_resource.hyper_connection;
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let mut state = state.borrow_mut();
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let next =
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prepare_next_request(&mut state, conn_rid, inner, scheme, addr)?;
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Poll::Ready(Ok(Some(next)))
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} else {
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Poll::Pending
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}
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})
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.try_or_cancel(cancel)
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.await
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.map_err(AnyError::from)
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}
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fn prepare_next_request(
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state: &mut OpState,
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conn_rid: ResourceId,
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request_resource: ServiceInner,
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scheme: &'static str,
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addr: SocketAddr,
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) -> Result<NextRequestResponse, AnyError> {
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let tx = request_resource.response_tx;
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let req = request_resource.request;
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let method = req.method().to_string();
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let headers = req_headers(&req);
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let url = req_url(&req, scheme, addr)?;
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let is_websocket = is_websocket_request(&req);
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let has_body = if let Some(exact_size) = req.size_hint().exact() {
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exact_size > 0
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} else {
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true
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};
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let maybe_request_rid = if is_websocket || has_body {
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let request_rid = state.resource_table.add(RequestResource {
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conn_rid,
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inner: AsyncRefCell::new(RequestOrStreamReader::Request(Some(req))),
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cancel: CancelHandle::default(),
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});
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Some(request_rid)
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} else {
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None
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};
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let response_sender_rid = state.resource_table.add(ResponseSenderResource {
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sender: tx,
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conn_rid,
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});
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Ok(NextRequestResponse(
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maybe_request_rid,
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response_sender_rid,
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method,
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headers,
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url,
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))
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}
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fn req_url(
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req: &hyper::Request<hyper::Body>,
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scheme: &'static str,
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addr: SocketAddr,
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) -> Result<String, AnyError> {
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let host: Cow<str> = if let Some(host) = req.uri().host() {
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Cow::Borrowed(host)
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} else if let Some(host) = req.headers().get("HOST") {
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Cow::Borrowed(host.to_str()?)
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} else {
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Cow::Owned(addr.to_string())
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};
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let path = req.uri().path_and_query().map_or("/", |p| p.as_str());
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Ok([scheme, "://", &host, path].concat())
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}
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fn req_headers(
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req: &hyper::Request<hyper::Body>,
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) -> Vec<(ByteString, ByteString)> {
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// We treat cookies specially, because we don't want them to get them
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// mangled by the `Headers` object in JS. What we do is take all cookie
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// headers and concat them into a single cookie header, seperated by
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// semicolons.
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let cookie_sep = "; ".as_bytes();
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let mut cookies = vec![];
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let mut headers = Vec::with_capacity(req.headers().len());
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for (name, value) in req.headers().iter() {
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if name == hyper::header::COOKIE {
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cookies.push(value.as_bytes());
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} else {
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let name: &[u8] = name.as_ref();
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let value = value.as_bytes();
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headers.push((ByteString(name.to_owned()), ByteString(value.to_owned())));
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}
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}
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if !cookies.is_empty() {
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headers.push((
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ByteString("cookie".as_bytes().to_owned()),
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ByteString(cookies.join(cookie_sep)),
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));
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}
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headers
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}
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fn is_websocket_request(req: &hyper::Request<hyper::Body>) -> bool {
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req_header_contains(req, hyper::header::CONNECTION, "upgrade")
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&& req_header_contains(req, hyper::header::UPGRADE, "websocket")
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}
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fn req_header_contains(
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req: &hyper::Request<hyper::Body>,
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key: impl hyper::header::AsHeaderName,
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value: &str,
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) -> bool {
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req.headers().get_all(key).iter().any(|v| {
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v.to_str()
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.map(|s| s.to_lowercase().contains(value))
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.unwrap_or(false)
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})
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}
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fn should_ignore_error(e: &AnyError) -> bool {
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if let Some(e) = e.downcast_ref::<hyper::Error>() {
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use std::error::Error;
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if let Some(std_err) = e.source() {
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if let Some(io_err) = std_err.downcast_ref::<std::io::Error>() {
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if io_err.kind() == std::io::ErrorKind::NotConnected {
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return true;
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}
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}
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}
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}
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false
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}
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pub fn start_http<IO: AsyncRead + AsyncWrite + Unpin + Send + 'static>(
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state: &mut OpState,
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io: IO,
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addr: SocketAddr,
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scheme: &'static str,
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) -> Result<ResourceId, AnyError> {
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let deno_service = Service::default();
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let hyper_connection = Http::new()
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.with_executor(LocalExecutor)
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.serve_connection(io, deno_service.clone())
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.with_upgrades();
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let conn = Pin::new(Box::new(hyper_connection));
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let conn_resource = ConnResource {
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hyper_connection: Conn {
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scheme,
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addr,
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conn: Rc::new(RefCell::new(conn)),
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},
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deno_service,
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cancel: CancelHandle::default(),
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};
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let rid = state.resource_table.add(conn_resource);
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Ok(rid)
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}
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// We use a tuple instead of struct to avoid serialization overhead of the keys.
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#[derive(Deserialize)]
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struct RespondArgs(
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// rid:
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u32,
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// status:
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u16,
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// headers:
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Vec<(ByteString, ByteString)>,
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);
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async fn op_http_response(
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state: Rc<RefCell<OpState>>,
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args: RespondArgs,
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data: Option<ZeroCopyBuf>,
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) -> Result<Option<ResourceId>, AnyError> {
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let RespondArgs(rid, status, headers) = args;
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let response_sender = state
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.borrow_mut()
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.resource_table
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.take::<ResponseSenderResource>(rid)?;
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let response_sender = Rc::try_unwrap(response_sender)
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.ok()
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.expect("multiple op_http_respond ongoing");
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let conn_rid = response_sender.conn_rid;
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let conn_resource = state
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.borrow()
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.resource_table
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.get::<ConnResource>(conn_rid)?;
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let mut builder = Response::builder().status(status);
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builder.headers_mut().unwrap().reserve(headers.len());
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for (key, value) in &headers {
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builder = builder.header(key.as_ref(), value.as_ref());
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}
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let res;
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let maybe_response_body_rid = if let Some(d) = data {
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// If a body is passed, we use it, and don't return a body for streaming.
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res = builder.body(Vec::from(&*d).into())?;
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None
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} else {
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// If no body is passed, we return a writer for streaming the body.
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let (sender, body) = Body::channel();
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res = builder.body(body)?;
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let response_body_rid =
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state.borrow_mut().resource_table.add(ResponseBodyResource {
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body: AsyncRefCell::new(sender),
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conn_rid,
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});
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Some(response_body_rid)
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};
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// oneshot::Sender::send(v) returns |v| on error, not an error object.
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// The only failure mode is the receiver already having dropped its end
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// of the channel.
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if response_sender.sender.send(res).is_err() {
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if let Some(rid) = maybe_response_body_rid {
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let _ = state
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.borrow_mut()
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.resource_table
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.take::<ResponseBodyResource>(rid);
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}
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return Err(type_error("internal communication error"));
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}
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let result = poll_fn(|cx| match conn_resource.poll(cx) {
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Poll::Ready(x) => {
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state.borrow_mut().resource_table.close(conn_rid).ok();
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Poll::Ready(x)
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}
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Poll::Pending => Poll::Ready(Ok(())),
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})
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.await;
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if let Err(e) = result {
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if let Some(rid) = maybe_response_body_rid {
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let _ = state
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.borrow_mut()
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.resource_table
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.take::<ResponseBodyResource>(rid);
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}
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return Err(e);
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}
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if maybe_response_body_rid.is_none() {
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conn_resource.deno_service.waker.wake();
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}
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Ok(maybe_response_body_rid)
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}
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|
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async fn op_http_response_close(
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state: Rc<RefCell<OpState>>,
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rid: ResourceId,
|
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_: (),
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) -> Result<(), AnyError> {
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let resource = state
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.borrow_mut()
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.resource_table
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.take::<ResponseBodyResource>(rid)?;
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let conn_resource = state
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.borrow()
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.resource_table
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.get::<ConnResource>(resource.conn_rid)?;
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drop(resource);
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let r = poll_fn(|cx| match conn_resource.poll(cx) {
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Poll::Ready(x) => Poll::Ready(x),
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Poll::Pending => Poll::Ready(Ok(())),
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})
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.await;
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conn_resource.deno_service.waker.wake();
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r
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}
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async fn op_http_request_read(
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state: Rc<RefCell<OpState>>,
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rid: ResourceId,
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data: Option<ZeroCopyBuf>,
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) -> Result<usize, AnyError> {
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let mut data = data.ok_or_else(null_opbuf)?;
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|
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let resource = state
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.borrow()
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.resource_table
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.get::<RequestResource>(rid as u32)?;
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let conn_resource = state
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.borrow()
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.resource_table
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.get::<ConnResource>(resource.conn_rid)?;
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|
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let mut inner = RcRef::map(resource.clone(), |r| &r.inner)
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.borrow_mut()
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.await;
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if let RequestOrStreamReader::Request(req) = &mut *inner {
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let req = req.take().unwrap();
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let stream: BytesStream = Box::pin(req.into_body().map(|r| {
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r.map_err(|err| std::io::Error::new(std::io::ErrorKind::Other, err))
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}));
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let reader = StreamReader::new(stream);
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*inner = RequestOrStreamReader::StreamReader(reader);
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};
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let reader = match &mut *inner {
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RequestOrStreamReader::StreamReader(reader) => reader,
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_ => unreachable!(),
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};
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let cancel = RcRef::map(resource, |r| &r.cancel);
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|
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let mut read_fut = reader.read(&mut data).try_or_cancel(cancel).boxed_local();
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|
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poll_fn(|cx| {
|
|
if let Poll::Ready(Err(e)) = conn_resource.poll(cx) {
|
|
// close ConnResource
|
|
// close RequestResource associated with connection
|
|
// close ResponseBodyResource associated with connection
|
|
return Poll::Ready(Err(e));
|
|
}
|
|
|
|
read_fut.poll_unpin(cx).map_err(AnyError::from)
|
|
})
|
|
.await
|
|
}
|
|
|
|
async fn op_http_response_write(
|
|
state: Rc<RefCell<OpState>>,
|
|
rid: ResourceId,
|
|
data: Option<ZeroCopyBuf>,
|
|
) -> Result<(), AnyError> {
|
|
let buf = data.ok_or_else(null_opbuf)?;
|
|
let resource = state
|
|
.borrow()
|
|
.resource_table
|
|
.get::<ResponseBodyResource>(rid as u32)?;
|
|
|
|
let conn_resource = state
|
|
.borrow()
|
|
.resource_table
|
|
.get::<ConnResource>(resource.conn_rid)?;
|
|
|
|
let mut body = RcRef::map(&resource, |r| &r.body).borrow_mut().await;
|
|
|
|
let mut send_data_fut = body.send_data(Vec::from(&*buf).into()).boxed_local();
|
|
|
|
poll_fn(|cx| {
|
|
let r = send_data_fut.poll_unpin(cx).map_err(AnyError::from);
|
|
|
|
// Poll connection so the data is flushed
|
|
if let Poll::Ready(Err(e)) = conn_resource.poll(cx) {
|
|
// close ConnResource
|
|
// close RequestResource associated with connection
|
|
// close ResponseBodyResource associated with connection
|
|
return Poll::Ready(Err(e));
|
|
}
|
|
|
|
r
|
|
})
|
|
.await?;
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn op_http_websocket_accept_header(
|
|
_: &mut OpState,
|
|
key: String,
|
|
_: (),
|
|
) -> Result<String, AnyError> {
|
|
let digest = ring::digest::digest(
|
|
&ring::digest::SHA1_FOR_LEGACY_USE_ONLY,
|
|
format!("{}258EAFA5-E914-47DA-95CA-C5AB0DC85B11", key).as_bytes(),
|
|
);
|
|
Ok(base64::encode(digest))
|
|
}
|
|
|
|
async fn op_http_upgrade_websocket(
|
|
state: Rc<RefCell<OpState>>,
|
|
rid: ResourceId,
|
|
_: (),
|
|
) -> Result<ResourceId, AnyError> {
|
|
let req_resource = state
|
|
.borrow_mut()
|
|
.resource_table
|
|
.take::<RequestResource>(rid)?;
|
|
|
|
let mut inner = RcRef::map(&req_resource, |r| &r.inner).borrow_mut().await;
|
|
|
|
if let RequestOrStreamReader::Request(req) = inner.as_mut() {
|
|
let upgraded = hyper::upgrade::on(req.as_mut().unwrap()).await?;
|
|
let stream =
|
|
deno_websocket::tokio_tungstenite::WebSocketStream::from_raw_socket(
|
|
upgraded,
|
|
deno_websocket::tokio_tungstenite::tungstenite::protocol::Role::Server,
|
|
None,
|
|
)
|
|
.await;
|
|
|
|
let (ws_tx, ws_rx) = stream.split();
|
|
let rid =
|
|
state
|
|
.borrow_mut()
|
|
.resource_table
|
|
.add(deno_websocket::WsStreamResource {
|
|
stream: deno_websocket::WebSocketStreamType::Server {
|
|
rx: AsyncRefCell::new(ws_rx),
|
|
tx: AsyncRefCell::new(ws_tx),
|
|
},
|
|
cancel: Default::default(),
|
|
});
|
|
|
|
Ok(rid)
|
|
} else {
|
|
Err(bad_resource_id())
|
|
}
|
|
}
|
|
|
|
type BytesStream =
|
|
Pin<Box<dyn Stream<Item = std::io::Result<bytes::Bytes>> + Unpin>>;
|
|
|
|
enum RequestOrStreamReader {
|
|
Request(Option<Request<hyper::Body>>),
|
|
StreamReader(StreamReader<BytesStream, bytes::Bytes>),
|
|
}
|
|
|
|
struct RequestResource {
|
|
conn_rid: ResourceId,
|
|
inner: AsyncRefCell<RequestOrStreamReader>,
|
|
cancel: CancelHandle,
|
|
}
|
|
|
|
impl Resource for RequestResource {
|
|
fn name(&self) -> Cow<str> {
|
|
"request".into()
|
|
}
|
|
|
|
fn close(self: Rc<Self>) {
|
|
self.cancel.cancel()
|
|
}
|
|
}
|
|
|
|
struct ResponseSenderResource {
|
|
sender: oneshot::Sender<Response<Body>>,
|
|
conn_rid: ResourceId,
|
|
}
|
|
|
|
impl Resource for ResponseSenderResource {
|
|
fn name(&self) -> Cow<str> {
|
|
"responseSender".into()
|
|
}
|
|
}
|
|
|
|
struct ResponseBodyResource {
|
|
body: AsyncRefCell<hyper::body::Sender>,
|
|
conn_rid: ResourceId,
|
|
}
|
|
|
|
impl Resource for ResponseBodyResource {
|
|
fn name(&self) -> Cow<str> {
|
|
"responseBody".into()
|
|
}
|
|
}
|
|
|
|
// Needed so hyper can use non Send futures
|
|
#[derive(Clone)]
|
|
struct LocalExecutor;
|
|
|
|
impl<Fut> hyper::rt::Executor<Fut> for LocalExecutor
|
|
where
|
|
Fut: Future + 'static,
|
|
Fut::Output: 'static,
|
|
{
|
|
fn execute(&self, fut: Fut) {
|
|
tokio::task::spawn_local(fut);
|
|
}
|
|
}
|