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refactor(ext/websocket): use fastwebsockets client (#18725)

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Divy Srivastava 2023-04-20 21:54:22 +05:30 committed by GitHub
parent f520284081
commit 1976504c63
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7 changed files with 183 additions and 451 deletions
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9
Cargo.lock generated
View file

@ -1819,11 +1819,16 @@ dependencies = [
[[package]]
name = "fastwebsockets"
version = "0.1.3"
version = "0.2.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d57e99c3fa6d0e1c6aeb84f4c904b26425128215fd318a251d8e785e373d43b6"
checksum = "99a248d92ac4e9048a30d147d7897eaaadd0a5230f11982ab7d6935d7d268902"
dependencies = [
"base64 0.21.0",
"cc",
"hyper",
"pin-project",
"rand",
"sha1",
"simdutf8",
"tokio",
"utf-8",

39
ext/http/lib.rs
View file

@ -1129,41 +1129,6 @@ async fn op_http_upgrade_early(
Ok(rid)
}
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>>,
@ -1183,9 +1148,7 @@ async fn op_http_upgrade_websocket(
};
let transport = hyper::upgrade::on(request).await?;
let ws_rid =
ws_create_server_stream(&state, Box::pin(UpgradedStream(transport)))
.await?;
let ws_rid = ws_create_server_stream(&state, transport).await?;
Ok(ws_rid)
}

16
ext/websocket/01_websocket.js
View file

@ -317,9 +317,7 @@ class WebSocket extends EventTarget {
this[_bufferedAmount] += byteLength;
PromisePrototypeThen(
core.opAsync2(
this[_role] === SERVER
? "op_server_ws_send_binary"
: "op_ws_send_binary",
"op_ws_send_binary",
this[_rid],
view,
),
@ -357,7 +355,7 @@ class WebSocket extends EventTarget {
this[_bufferedAmount] += TypedArrayPrototypeGetByteLength(d);
PromisePrototypeThen(
core.opAsync2(
this[_role] === SERVER ? "op_server_ws_send_text" : "op_ws_send_text",
"op_ws_send_text",
this[_rid],
string,
),
@ -416,7 +414,7 @@ class WebSocket extends EventTarget {
PromisePrototypeCatch(
core.opAsync(
this[_role] === SERVER ? "op_server_ws_close" : "op_ws_close",
"op_ws_close",
this[_rid],
code,
reason,
@ -441,7 +439,7 @@ class WebSocket extends EventTarget {
async [_eventLoop]() {
while (this[_readyState] !== CLOSED) {
const { 0: kind, 1: value } = await core.opAsync2(
this[_role] === SERVER ? "op_server_ws_next_event" : "op_ws_next_event",
"op_ws_next_event",
this[_rid],
);
@ -508,7 +506,7 @@ class WebSocket extends EventTarget {
if (prevState === OPEN) {
try {
await core.opAsync(
this[_role] === SERVER ? "op_server_ws_close" : "op_ws_close",
"op_ws_close",
this[_rid],
code,
value,
@ -537,7 +535,7 @@ class WebSocket extends EventTarget {
this[_idleTimeoutTimeout] = setTimeout(async () => {
if (this[_readyState] === OPEN) {
await core.opAsync(
this[_role] === SERVER ? "op_server_ws_send" : "op_ws_send",
"op_ws_send",
this[_rid],
{
kind: "ping",
@ -548,7 +546,7 @@ class WebSocket extends EventTarget {
this[_readyState] = CLOSING;
const reason = "No response from ping frame.";
await core.opAsync(
this[_role] === SERVER ? "op_server_ws_close" : "op_ws_close",
"op_ws_close",
this[_rid],
1001,
reason,

2
ext/websocket/02_websocketstream.js
View file

@ -176,7 +176,7 @@ class WebSocketStream {
create.rid,
);
if (kind > 6) {
if (kind > 5) {
/* close */
break;
}

2
ext/websocket/Cargo.toml
View file

@ -16,7 +16,7 @@ path = "lib.rs"
[dependencies]
deno_core.workspace = true
deno_tls.workspace = true
fastwebsockets = "0.1.3"
fastwebsockets = { version = "0.2.1", features = ["upgrade"] }
http.workspace = true
hyper.workspace = true
serde.workspace = true

372
ext/websocket/lib.rs
View file

@ -3,10 +3,6 @@
use deno_core::error::invalid_hostname;
use deno_core::error::type_error;
use deno_core::error::AnyError;
use deno_core::futures::stream::SplitSink;
use deno_core::futures::stream::SplitStream;
use deno_core::futures::SinkExt;
use deno_core::futures::StreamExt;
use deno_core::op;
use deno_core::StringOrBuffer;
@ -21,42 +17,41 @@ use deno_core::Resource;
use deno_core::ResourceId;
use deno_core::ZeroCopyBuf;
use deno_tls::create_client_config;
use http::header::CONNECTION;
use http::header::UPGRADE;
use http::HeaderName;
use http::HeaderValue;
use http::Method;
use http::Request;
use http::Uri;
use hyper::upgrade::Upgraded;
use hyper::Body;
use hyper::Response;
use serde::Deserialize;
use serde::Serialize;
use std::borrow::Cow;
use std::cell::Cell;
use std::cell::RefCell;
use std::convert::TryFrom;
use std::fmt;
use std::path::PathBuf;
use std::pin::Pin;
use std::rc::Rc;
use std::sync::Arc;
use tokio::io::AsyncRead;
use tokio::io::AsyncWrite;
use tokio::net::TcpStream;
use tokio_rustls::rustls::RootCertStore;
use tokio_rustls::rustls::ServerName;
use tokio_rustls::TlsConnector;
use tokio_tungstenite::client_async_with_config;
use tokio_tungstenite::tungstenite::handshake::client::Response;
use tokio_tungstenite::tungstenite::protocol::frame::coding::CloseCode;
use tokio_tungstenite::tungstenite::protocol::CloseFrame;
use tokio_tungstenite::tungstenite::protocol::Message;
use tokio_tungstenite::tungstenite::protocol::WebSocketConfig;
use tokio_tungstenite::MaybeTlsStream;
use tokio_tungstenite::WebSocketStream;
use fastwebsockets::CloseCode;
use fastwebsockets::FragmentCollector;
use fastwebsockets::Frame;
use fastwebsockets::OpCode;
use fastwebsockets::Role;
use fastwebsockets::WebSocket;
pub use tokio_tungstenite; // Re-export tokio_tungstenite
mod server;
pub use server::ws_create_server_stream;
#[derive(Clone)]
pub struct WsRootStore(pub Option<RootCertStore>);
#[derive(Clone)]
@ -76,100 +71,6 @@ pub trait WebSocketPermissions {
/// would override previously used alias.
pub struct UnsafelyIgnoreCertificateErrors(Option<Vec<String>>);
type ClientWsStream = WebSocketStream<MaybeTlsStream<TcpStream>>;
type ServerWsStream = WebSocketStream<Pin<Box<dyn Upgraded>>>;
pub enum WebSocketStreamType {
Client {
tx: AsyncRefCell<SplitSink<ClientWsStream, Message>>,
rx: AsyncRefCell<SplitStream<ClientWsStream>>,
},
Server {
tx: AsyncRefCell<SplitSink<ServerWsStream, Message>>,
rx: AsyncRefCell<SplitStream<ServerWsStream>>,
},
}
pub trait Upgraded: AsyncRead + AsyncWrite + Unpin {}
pub struct WsStreamResource {
pub stream: WebSocketStreamType,
// When a `WsStreamResource` resource is closed, all pending 'read' ops are
// canceled, while 'write' ops are allowed to complete. Therefore only
// 'read' futures are attached to this cancel handle.
pub cancel: CancelHandle,
}
impl WsStreamResource {
async fn send(self: &Rc<Self>, message: Message) -> Result<(), AnyError> {
use tokio_tungstenite::tungstenite::Error;
let res = match self.stream {
WebSocketStreamType::Client { .. } => {
let mut tx = RcRef::map(self, |r| match &r.stream {
WebSocketStreamType::Client { tx, .. } => tx,
WebSocketStreamType::Server { .. } => unreachable!(),
})
.borrow_mut()
.await;
tx.send(message).await
}
WebSocketStreamType::Server { .. } => {
let mut tx = RcRef::map(self, |r| match &r.stream {
WebSocketStreamType::Client { .. } => unreachable!(),
WebSocketStreamType::Server { tx, .. } => tx,
})
.borrow_mut()
.await;
tx.send(message).await
}
};
match res {
Ok(()) => Ok(()),
Err(Error::ConnectionClosed) => Ok(()),
Err(tokio_tungstenite::tungstenite::Error::Protocol(
tokio_tungstenite::tungstenite::error::ProtocolError::SendAfterClosing,
)) => Ok(()),
Err(err) => Err(err.into()),
}
}
async fn next_message(
self: &Rc<Self>,
cancel: RcRef<CancelHandle>,
) -> Result<
Option<Result<Message, tokio_tungstenite::tungstenite::Error>>,
AnyError,
> {
match &self.stream {
WebSocketStreamType::Client { .. } => {
let mut rx = RcRef::map(self, |r| match &r.stream {
WebSocketStreamType::Client { rx, .. } => rx,
WebSocketStreamType::Server { .. } => unreachable!(),
})
.borrow_mut()
.await;
rx.next().or_cancel(cancel).await.map_err(AnyError::from)
}
WebSocketStreamType::Server { .. } => {
let mut rx = RcRef::map(self, |r| match &r.stream {
WebSocketStreamType::Client { .. } => unreachable!(),
WebSocketStreamType::Server { rx, .. } => rx,
})
.borrow_mut()
.await;
rx.next().or_cancel(cancel).await.map_err(AnyError::from)
}
}
}
}
impl Resource for WsStreamResource {
fn name(&self) -> Cow<str> {
"webSocketStream".into()
}
}
pub struct WsCancelResource(Rc<CancelHandle>);
impl Resource for WsCancelResource {
@ -182,6 +83,15 @@ impl Resource for WsCancelResource {
}
}
#[derive(Deserialize)]
#[serde(tag = "kind", content = "value", rename_all = "camelCase")]
pub enum SendValue {
Text(String),
Binary(ZeroCopyBuf),
Pong,
Ping,
}
// This op is needed because creating a WS instance in JavaScript is a sync
// operation and should throw error when permissions are not fulfilled,
// but actual op that connects WS is async.
@ -257,7 +167,21 @@ where
let uri: Uri = url.parse()?;
let mut request = Request::builder().method(Method::GET).uri(&uri);
request = request.header("User-Agent", user_agent);
let authority = uri.authority().unwrap().as_str();
let host = authority
.find('@')
.map(|idx| authority.split_at(idx + 1).1)
.unwrap_or_else(|| authority);
request = request
.header("User-Agent", user_agent)
.header("Host", host)
.header(UPGRADE, "websocket")
.header(CONNECTION, "upgrade")
.header(
"Sec-WebSocket-Key",
fastwebsockets::handshake::generate_key(),
)
.header("Sec-WebSocket-Version", "13");
if !protocols.is_empty() {
request = request.header("Sec-WebSocket-Protocol", protocols);
@ -287,7 +211,7 @@ where
}
}
let request = request.body(())?;
let request = request.body(Body::empty())?;
let domain = &uri.host().unwrap().to_string();
let port = &uri.port_u16().unwrap_or(match uri.scheme_str() {
Some("wss") => 443,
@ -315,16 +239,9 @@ where
_ => unreachable!(),
};
let client = client_async_with_config(
request,
socket,
Some(WebSocketConfig {
max_message_size: Some(128 << 20),
max_frame_size: Some(32 << 20),
..Default::default()
}),
);
let (stream, response): (ClientWsStream, Response) =
let client = fastwebsockets::handshake::client(request, socket);
let (stream, response): (WebSocket<Upgraded>, Response<Body>) =
if let Some(cancel_resource) = cancel_resource {
client.or_cancel(cancel_resource.0.to_owned()).await?
} else {
@ -340,13 +257,9 @@ where
state.borrow_mut().resource_table.close(cancel_rid).ok();
}
let (ws_tx, ws_rx) = stream.split();
let resource = WsStreamResource {
stream: WebSocketStreamType::Client {
rx: AsyncRefCell::new(ws_rx),
tx: AsyncRefCell::new(ws_tx),
},
cancel: Default::default(),
let resource = ServerWebSocket {
ws: AsyncRefCell::new(FragmentCollector::new(stream)),
closed: Rc::new(Cell::new(false)),
};
let mut state = state.borrow_mut();
let rid = state.resource_table.add(resource);
@ -368,13 +281,60 @@ where
})
}
#[derive(Deserialize)]
#[serde(tag = "kind", content = "value", rename_all = "camelCase")]
pub enum SendValue {
Text(String),
Binary(ZeroCopyBuf),
Pong,
Ping,
#[repr(u16)]
pub enum MessageKind {
Text = 0,
Binary = 1,
Pong = 2,
Ping = 3,
Error = 5,
Closed = 6,
}
pub struct ServerWebSocket {
ws: AsyncRefCell<FragmentCollector<Upgraded>>,
closed: Rc<Cell<bool>>,
}
impl ServerWebSocket {
#[inline]
pub async fn write_frame(
self: Rc<Self>,
frame: Frame,
) -> Result<(), AnyError> {
// SAFETY: fastwebsockets only needs a mutable reference to the WebSocket
// to populate the write buffer. We encounter an await point when writing
// to the socket after the frame has already been written to the buffer.
let ws = unsafe { &mut *self.ws.as_ptr() };
ws.write_frame(frame)
.await
.map_err(|err| type_error(err.to_string()))?;
Ok(())
}
}
impl Resource for ServerWebSocket {
fn name(&self) -> Cow<str> {
"serverWebSocket".into()
}
}
pub async fn ws_create_server_stream(
state: &Rc<RefCell<OpState>>,
transport: Upgraded,
) -> Result<ResourceId, AnyError> {
let mut ws = WebSocket::after_handshake(transport, Role::Server);
ws.set_writev(true);
ws.set_auto_close(true);
ws.set_auto_pong(true);
let ws_resource = ServerWebSocket {
ws: AsyncRefCell::new(FragmentCollector::new(ws)),
closed: Rc::new(Cell::new(false)),
};
let resource_table = &mut state.borrow_mut().resource_table;
let rid = resource_table.add(ws_resource);
Ok(rid)
}
#[op]
@ -386,9 +346,10 @@ pub async fn op_ws_send_binary(
let resource = state
.borrow_mut()
.resource_table
.get::<WsStreamResource>(rid)?;
resource.send(Message::Binary(data.to_vec())).await?;
Ok(())
.get::<ServerWebSocket>(rid)?;
resource
.write_frame(Frame::new(true, OpCode::Binary, None, data.to_vec()))
.await
}
#[op]
@ -400,9 +361,10 @@ pub async fn op_ws_send_text(
let resource = state
.borrow_mut()
.resource_table
.get::<WsStreamResource>(rid)?;
resource.send(Message::Text(data)).await?;
Ok(())
.get::<ServerWebSocket>(rid)?;
resource
.write_frame(Frame::new(true, OpCode::Text, None, data.into_bytes()))
.await
}
#[op]
@ -412,18 +374,21 @@ pub async fn op_ws_send(
value: SendValue,
) -> Result<(), AnyError> {
let msg = match value {
SendValue::Text(text) => Message::Text(text),
SendValue::Binary(buf) => Message::Binary(buf.to_vec()),
SendValue::Pong => Message::Pong(vec![]),
SendValue::Ping => Message::Ping(vec![]),
SendValue::Text(text) => {
Frame::new(true, OpCode::Text, None, text.into_bytes())
}
SendValue::Binary(buf) => {
Frame::new(true, OpCode::Binary, None, buf.to_vec())
}
SendValue::Pong => Frame::new(true, OpCode::Pong, None, vec![]),
SendValue::Ping => Frame::new(true, OpCode::Ping, None, vec![]),
};
let resource = state
.borrow_mut()
.resource_table
.get::<WsStreamResource>(rid)?;
resource.send(msg).await?;
Ok(())
.get::<ServerWebSocket>(rid)?;
resource.write_frame(msg).await
}
#[op(deferred)]
@ -433,34 +398,21 @@ pub async fn op_ws_close(
code: Option<u16>,
reason: Option<String>,
) -> Result<(), AnyError> {
let rid = rid;
let msg = Message::Close(code.map(|c| CloseFrame {
code: CloseCode::from(c),
reason: match reason {
Some(reason) => Cow::from(reason),
None => Default::default(),
},
}));
let resource = state
.borrow_mut()
.resource_table
.get::<WsStreamResource>(rid)?;
resource.send(msg).await?;
.get::<ServerWebSocket>(rid)?;
let frame = reason
.map(|reason| Frame::close(code.unwrap_or(1005), reason.as_bytes()))
.unwrap_or_else(|| Frame::close_raw(vec![]));
let cell = Rc::clone(&resource.closed);
cell.set(true);
resource.write_frame(frame).await?;
Ok(())
}
#[repr(u16)]
pub enum MessageKind {
Text = 0,
Binary = 1,
Pong = 2,
Ping = 3,
Error = 5,
Closed = 6,
}
#[op]
#[op(deferred)]
pub async fn op_ws_next_event(
state: Rc<RefCell<OpState>>,
rid: ResourceId,
@ -468,45 +420,58 @@ pub async fn op_ws_next_event(
let resource = state
.borrow_mut()
.resource_table
.get::<WsStreamResource>(rid)?;
.get::<ServerWebSocket>(rid)?;
let cancel = RcRef::map(&resource, |r| &r.cancel);
let val = resource.next_message(cancel).await?;
let res = match val {
Some(Ok(Message::Text(text))) => {
(MessageKind::Text as u16, StringOrBuffer::String(text))
let mut ws = RcRef::map(&resource, |r| &r.ws).borrow_mut().await;
let val = match ws.read_frame().await {
Ok(val) => val,
Err(err) => {
// No message was received, socket closed while we waited.
// Try close the stream, ignoring any errors, and report closed status to JavaScript.
if resource.closed.get() {
let _ = state.borrow_mut().resource_table.close(rid);
return Ok((
MessageKind::Closed as u16,
StringOrBuffer::Buffer(vec![].into()),
));
}
return Ok((
MessageKind::Error as u16,
StringOrBuffer::String(err.to_string()),
));
}
Some(Ok(Message::Binary(data))) => (
};
let res = match val.opcode {
OpCode::Text => (
MessageKind::Text as u16,
StringOrBuffer::String(String::from_utf8(val.payload).unwrap()),
),
OpCode::Binary => (
MessageKind::Binary as u16,
StringOrBuffer::Buffer(data.into()),
StringOrBuffer::Buffer(val.payload.into()),
),
Some(Ok(Message::Close(Some(frame)))) => (
frame.code.into(),
StringOrBuffer::String(frame.reason.to_string()),
),
Some(Ok(Message::Close(None))) => {
(1005, StringOrBuffer::String("".to_string()))
OpCode::Close => {
if val.payload.len() < 2 {
return Ok((1005, StringOrBuffer::String("".to_string())));
}
let close_code =
CloseCode::from(u16::from_be_bytes([val.payload[0], val.payload[1]]));
let reason = String::from_utf8(val.payload[2..].to_vec()).unwrap();
(close_code.into(), StringOrBuffer::String(reason))
}
Some(Ok(Message::Ping(_))) => (
OpCode::Ping => (
MessageKind::Ping as u16,
StringOrBuffer::Buffer(vec![].into()),
),
Some(Ok(Message::Pong(_))) => (
OpCode::Pong => (
MessageKind::Pong as u16,
StringOrBuffer::Buffer(vec![].into()),
),
Some(Err(e)) => (
MessageKind::Error as u16,
StringOrBuffer::String(e.to_string()),
),
None => {
// No message was received, presumably the socket closed while we waited.
// Try close the stream, ignoring any errors, and report closed status to JavaScript.
let _ = state.borrow_mut().resource_table.close(rid);
(
MessageKind::Closed as u16,
StringOrBuffer::Buffer(vec![].into()),
)
OpCode::Continuation => {
return Err(type_error("Unexpected continuation frame"))
}
};
Ok(res)
@ -523,11 +488,6 @@ deno_core::extension!(deno_websocket,
op_ws_next_event,
op_ws_send_binary,
op_ws_send_text,
server::op_server_ws_send,
server::op_server_ws_close,
server::op_server_ws_next_event,
server::op_server_ws_send_binary,
server::op_server_ws_send_text,
],
esm = [ "01_websocket.js", "02_websocketstream.js" ],
options = {

194
ext/websocket/server.rs
View file

@ -1,194 +0,0 @@
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
use crate::MessageKind;
use crate::SendValue;
use crate::Upgraded;
use deno_core::error::type_error;
use deno_core::error::AnyError;
use deno_core::op;
use deno_core::AsyncRefCell;
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 std::borrow::Cow;
use std::cell::RefCell;
use std::pin::Pin;
use std::rc::Rc;
use fastwebsockets::CloseCode;
use fastwebsockets::FragmentCollector;
use fastwebsockets::Frame;
use fastwebsockets::OpCode;
use fastwebsockets::WebSocket;
pub struct ServerWebSocket {
ws: AsyncRefCell<FragmentCollector<Pin<Box<dyn Upgraded>>>>,
}
impl ServerWebSocket {
#[inline]
pub async fn write_frame(
self: Rc<Self>,
frame: Frame,
) -> Result<(), AnyError> {
// SAFETY: fastwebsockets only needs a mutable reference to the WebSocket
// to populate the write buffer. We encounter an await point when writing
// to the socket after the frame has already been written to the buffer.
let ws = unsafe { &mut *self.ws.as_ptr() };
ws.write_frame(frame)
.await
.map_err(|err| type_error(err.to_string()))?;
Ok(())
}
}
impl Resource for ServerWebSocket {
fn name(&self) -> Cow<str> {
"serverWebSocket".into()
}
}
pub async fn ws_create_server_stream(
state: &Rc<RefCell<OpState>>,
transport: Pin<Box<dyn Upgraded>>,
) -> Result<ResourceId, AnyError> {
let mut ws = WebSocket::after_handshake(transport);
ws.set_writev(false);
ws.set_auto_close(true);
ws.set_auto_pong(true);
let ws_resource = ServerWebSocket {
ws: AsyncRefCell::new(FragmentCollector::new(ws)),
};
let resource_table = &mut state.borrow_mut().resource_table;
let rid = resource_table.add(ws_resource);
Ok(rid)
}
#[op]
pub async fn op_server_ws_send_binary(
state: Rc<RefCell<OpState>>,
rid: ResourceId,
data: ZeroCopyBuf,
) -> Result<(), AnyError> {
let resource = state
.borrow_mut()
.resource_table
.get::<ServerWebSocket>(rid)?;
resource
.write_frame(Frame::new(true, OpCode::Binary, None, data.to_vec()))
.await
}
#[op]
pub async fn op_server_ws_send_text(
state: Rc<RefCell<OpState>>,
rid: ResourceId,
data: String,
) -> Result<(), AnyError> {
let resource = state
.borrow_mut()
.resource_table
.get::<ServerWebSocket>(rid)?;
resource
.write_frame(Frame::new(true, OpCode::Text, None, data.into_bytes()))
.await
}
#[op]
pub async fn op_server_ws_send(
state: Rc<RefCell<OpState>>,
rid: ResourceId,
value: SendValue,
) -> Result<(), AnyError> {
let msg = match value {
SendValue::Text(text) => {
Frame::new(true, OpCode::Text, None, text.into_bytes())
}
SendValue::Binary(buf) => {
Frame::new(true, OpCode::Binary, None, buf.to_vec())
}
SendValue::Pong => Frame::new(true, OpCode::Pong, None, vec![]),
SendValue::Ping => Frame::new(true, OpCode::Ping, None, vec![]),
};
let resource = state
.borrow_mut()
.resource_table
.get::<ServerWebSocket>(rid)?;
resource.write_frame(msg).await
}
#[op(deferred)]
pub async fn op_server_ws_close(
state: Rc<RefCell<OpState>>,
rid: ResourceId,
code: Option<u16>,
reason: Option<String>,
) -> Result<(), AnyError> {
let resource = state
.borrow_mut()
.resource_table
.get::<ServerWebSocket>(rid)?;
let frame = reason
.map(|reason| Frame::close(code.unwrap_or(1005), reason.as_bytes()))
.unwrap_or_else(|| Frame::close_raw(vec![]));
resource.write_frame(frame).await
}
#[op(deferred)]
pub async fn op_server_ws_next_event(
state: Rc<RefCell<OpState>>,
rid: ResourceId,
) -> Result<(u16, StringOrBuffer), AnyError> {
let resource = state
.borrow_mut()
.resource_table
.get::<ServerWebSocket>(rid)?;
let mut ws = RcRef::map(&resource, |r| &r.ws).borrow_mut().await;
let val = match ws.read_frame().await {
Ok(val) => val,
Err(err) => {
return Ok((
MessageKind::Error as u16,
StringOrBuffer::String(err.to_string()),
))
}
};
let res = match val.opcode {
OpCode::Text => (
MessageKind::Text as u16,
StringOrBuffer::String(String::from_utf8(val.payload).unwrap()),
),
OpCode::Binary => (
MessageKind::Binary as u16,
StringOrBuffer::Buffer(val.payload.into()),
),
OpCode::Close => {
if val.payload.len() < 2 {
return Ok((1005, StringOrBuffer::String("".to_string())));
}
let close_code =
CloseCode::from(u16::from_be_bytes([val.payload[0], val.payload[1]]));
let reason = String::from_utf8(val.payload[2..].to_vec()).unwrap();
(close_code.into(), StringOrBuffer::String(reason))
}
OpCode::Ping => (
MessageKind::Ping as u16,
StringOrBuffer::Buffer(vec![].into()),
),
OpCode::Pong => (
MessageKind::Pong as u16,
StringOrBuffer::Buffer(vec![].into()),
),
OpCode::Continuation => {
return Err(type_error("Unexpected continuation frame"))
}
};
Ok(res)
}