mirror of
https://github.com/denoland/deno.git
synced 2024-12-25 08:39:09 -05:00
179 lines
4.3 KiB
Rust
179 lines
4.3 KiB
Rust
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
|
|
|
|
use deno_core::error::generic_error;
|
|
use deno_core::error::AnyError;
|
|
use deno_core::AsyncMutFuture;
|
|
use deno_core::AsyncRefCell;
|
|
use deno_core::AsyncResult;
|
|
use deno_core::CancelHandle;
|
|
use deno_core::CancelTryFuture;
|
|
use deno_core::RcRef;
|
|
use deno_core::Resource;
|
|
use socket2::SockRef;
|
|
use std::borrow::Cow;
|
|
use std::rc::Rc;
|
|
use tokio::io::AsyncRead;
|
|
use tokio::io::AsyncReadExt;
|
|
use tokio::io::AsyncWrite;
|
|
use tokio::io::AsyncWriteExt;
|
|
use tokio::net::tcp;
|
|
|
|
#[cfg(unix)]
|
|
use tokio::net::unix;
|
|
|
|
/// A full duplex resource has a read and write ends that are completely
|
|
/// independent, like TCP/Unix sockets and TLS streams.
|
|
#[derive(Debug)]
|
|
pub struct FullDuplexResource<R, W> {
|
|
rd: AsyncRefCell<R>,
|
|
wr: AsyncRefCell<W>,
|
|
// When a full-duplex resource is closed, all pending 'read' ops are
|
|
// canceled, while 'write' ops are allowed to complete. Therefore only
|
|
// 'read' futures should be attached to this cancel handle.
|
|
cancel_handle: CancelHandle,
|
|
}
|
|
|
|
impl<R, W> FullDuplexResource<R, W>
|
|
where
|
|
R: AsyncRead + Unpin + 'static,
|
|
W: AsyncWrite + Unpin + 'static,
|
|
{
|
|
pub fn new((rd, wr): (R, W)) -> Self {
|
|
Self {
|
|
rd: rd.into(),
|
|
wr: wr.into(),
|
|
cancel_handle: Default::default(),
|
|
}
|
|
}
|
|
|
|
pub fn into_inner(self) -> (R, W) {
|
|
(self.rd.into_inner(), self.wr.into_inner())
|
|
}
|
|
|
|
pub fn rd_borrow_mut(self: &Rc<Self>) -> AsyncMutFuture<R> {
|
|
RcRef::map(self, |r| &r.rd).borrow_mut()
|
|
}
|
|
|
|
pub fn wr_borrow_mut(self: &Rc<Self>) -> AsyncMutFuture<W> {
|
|
RcRef::map(self, |r| &r.wr).borrow_mut()
|
|
}
|
|
|
|
pub fn cancel_handle(self: &Rc<Self>) -> RcRef<CancelHandle> {
|
|
RcRef::map(self, |r| &r.cancel_handle)
|
|
}
|
|
|
|
pub fn cancel_read_ops(&self) {
|
|
self.cancel_handle.cancel()
|
|
}
|
|
|
|
pub async fn read(
|
|
self: Rc<Self>,
|
|
data: &mut [u8],
|
|
) -> Result<usize, AnyError> {
|
|
let mut rd = self.rd_borrow_mut().await;
|
|
let nread = rd.read(data).try_or_cancel(self.cancel_handle()).await?;
|
|
Ok(nread)
|
|
}
|
|
|
|
pub async fn write(self: Rc<Self>, data: &[u8]) -> Result<usize, AnyError> {
|
|
let mut wr = self.wr_borrow_mut().await;
|
|
let nwritten = wr.write(data).await?;
|
|
Ok(nwritten)
|
|
}
|
|
|
|
pub async fn shutdown(self: Rc<Self>) -> Result<(), AnyError> {
|
|
let mut wr = self.wr_borrow_mut().await;
|
|
wr.shutdown().await?;
|
|
Ok(())
|
|
}
|
|
}
|
|
|
|
pub type TcpStreamResource =
|
|
FullDuplexResource<tcp::OwnedReadHalf, tcp::OwnedWriteHalf>;
|
|
|
|
impl Resource for TcpStreamResource {
|
|
deno_core::impl_readable_byob!();
|
|
deno_core::impl_writable!();
|
|
|
|
fn name(&self) -> Cow<str> {
|
|
"tcpStream".into()
|
|
}
|
|
|
|
fn shutdown(self: Rc<Self>) -> AsyncResult<()> {
|
|
Box::pin(self.shutdown())
|
|
}
|
|
|
|
fn close(self: Rc<Self>) {
|
|
self.cancel_read_ops();
|
|
}
|
|
}
|
|
|
|
impl TcpStreamResource {
|
|
pub fn set_nodelay(self: Rc<Self>, nodelay: bool) -> Result<(), AnyError> {
|
|
self.map_socket(Box::new(move |socket| Ok(socket.set_nodelay(nodelay)?)))
|
|
}
|
|
|
|
pub fn set_keepalive(
|
|
self: Rc<Self>,
|
|
keepalive: bool,
|
|
) -> Result<(), AnyError> {
|
|
self
|
|
.map_socket(Box::new(move |socket| Ok(socket.set_keepalive(keepalive)?)))
|
|
}
|
|
|
|
#[allow(clippy::type_complexity)]
|
|
fn map_socket(
|
|
self: Rc<Self>,
|
|
map: Box<dyn FnOnce(SockRef) -> Result<(), AnyError>>,
|
|
) -> Result<(), AnyError> {
|
|
if let Some(wr) = RcRef::map(self, |r| &r.wr).try_borrow() {
|
|
let stream = wr.as_ref().as_ref();
|
|
let socket = socket2::SockRef::from(stream);
|
|
|
|
return map(socket);
|
|
}
|
|
|
|
Err(generic_error("Unable to get resources"))
|
|
}
|
|
}
|
|
|
|
#[cfg(unix)]
|
|
pub type UnixStreamResource =
|
|
FullDuplexResource<unix::OwnedReadHalf, unix::OwnedWriteHalf>;
|
|
|
|
#[cfg(not(unix))]
|
|
pub struct UnixStreamResource;
|
|
|
|
#[cfg(not(unix))]
|
|
impl UnixStreamResource {
|
|
fn read(self: Rc<Self>, _data: &mut [u8]) -> AsyncResult<usize> {
|
|
unreachable!()
|
|
}
|
|
fn write(self: Rc<Self>, _data: &[u8]) -> AsyncResult<usize> {
|
|
unreachable!()
|
|
}
|
|
#[allow(clippy::unused_async)]
|
|
pub async fn shutdown(self: Rc<Self>) -> Result<(), AnyError> {
|
|
unreachable!()
|
|
}
|
|
pub fn cancel_read_ops(&self) {
|
|
unreachable!()
|
|
}
|
|
}
|
|
|
|
impl Resource for UnixStreamResource {
|
|
deno_core::impl_readable_byob!();
|
|
deno_core::impl_writable!();
|
|
|
|
fn name(&self) -> Cow<str> {
|
|
"unixStream".into()
|
|
}
|
|
|
|
fn shutdown(self: Rc<Self>) -> AsyncResult<()> {
|
|
Box::pin(self.shutdown())
|
|
}
|
|
|
|
fn close(self: Rc<Self>) {
|
|
self.cancel_read_ops();
|
|
}
|
|
}
|