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ported internal callbacks to Rc RefCells

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Maccesch 2023-08-15 12:15:58 +01:00
parent 3cd1728134
commit b80553751b
1 changed files with 131 additions and 92 deletions
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223
src/use_webtransport.rs
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@ -3,13 +3,11 @@ use default_struct_builder::DefaultBuilder;
use js_sys::{Reflect, Uint8Array};
use leptos::leptos_dom::helpers::TimeoutHandle;
use leptos::*;
use std::cell::{Cell, RefCell};
use std::rc::Rc;
use std::time::Duration;
use wasm_bindgen::prelude::*;
use wasm_bindgen_futures::JsFuture;
use web_sys::{
ReadableStream, ReadableStreamReaderMode, WebTransport, WritableStreamDefaultWriter,
};
///
///
@ -50,118 +48,151 @@ pub fn use_webtransport_with_options(
let (ready_state, set_ready_state) = create_signal(ConnectionReadyState::Closed);
let transport_ref = store_value(None::<web_sys::WebTransport>);
let datagrams_reader_initialized_ref = store_value(false);
let datagrams_writer_ref = store_value(None::<web_sys::WritableStreamDefaultWriter>);
let transport = Rc::new(RefCell::new(None::<web_sys::WebTransport>));
let datagrams_reader_initialized = Rc::new(Cell::new(false));
let datagrams_writer = Rc::new(RefCell::new(None::<web_sys::WritableStreamDefaultWriter>));
let reconnect_timer_ref = store_value(None::<TimeoutHandle>);
let reconnect_count_ref = store_value(0_u64);
let reconnect_timer = Rc::new(Cell::new(None::<TimeoutHandle>));
let reconnect_count = Rc::new(Cell::new(0_u64));
let unmounted = Rc::new(Cell::new(false));
let connect_ref = store_value(None::<Rc<dyn Fn()>>);
let reconnect = Rc::new(move || {
if reconnect_count_ref.get_value() < reconnect_limit
&& ready_state.get_untracked() == ConnectionReadyState::Open
{
reconnect_timer_ref.set_value(
set_timeout_with_handle(
move || {
if let Some(connect) = connect_ref.get_value() {
connect();
reconnect_count_ref.update_value(|current| *current += 1);
}
},
Duration::from_millis(reconnect_interval),
let reconnect = Rc::new({
let reconnect_timer = Rc::clone(&reconnect_timer);
let reconnect_count = Rc::clone(&reconnect_count);
move || {
if reconnect_count.get() < reconnect_limit
&& ready_state.get_untracked() == ConnectionReadyState::Open
{
reconnect_timer.set(
set_timeout_with_handle(
move || {
if let Some(connect) = connect_ref.get_value() {
connect();
reconnect_count.set(reconnect_count.get() + 1);
}
},
Duration::from_millis(reconnect_interval),
)
.ok(),
)
.ok(),
)
}
}
});
connect_ref.set_value(Some(Rc::new(move || {
let transport = transport_ref.get_value();
connect_ref.set_value(Some(Rc::new({
let transport = Rc::clone(&transport);
let reconnect_timer = Rc::clone(&reconnect_timer);
reconnect_timer_ref.set_value(None);
move || {
let transport = transport.borrow();
if let Some(transport) = transport.as_ref() {
transport.close();
}
reconnect_timer.set(None);
let transport =
web_sys::WebTransport::new_with_options(url, &options.into()).unwrap_throw();
set_ready_state.set(ConnectionReadyState::Connecting);
spawn_local(async move {
match JsFuture::from(transport.ready()).await {
Ok(_) => {
set_ready_state.set(ConnectionReadyState::Open);
on_open();
}
Err(e) => {
// TODO : handle error?
set_ready_state.set(ConnectionReadyState::Closed);
}
if let Some(transport) = transport.as_ref() {
transport.close();
}
});
let transport =
web_sys::WebTransport::new_with_options(url, &options.into()).unwrap_throw();
set_ready_state.set(ConnectionReadyState::Connecting);
spawn_local(async move {
match JsFuture::from(transport.ready()).await {
Ok(_) => {
set_ready_state.set(ConnectionReadyState::Open);
on_open();
}
Err(e) => {
// TODO : handle error?
set_ready_state.set(ConnectionReadyState::Closed);
}
}
});
}
})));
let open = {
let reconnect_count = Rc::clone(&reconnect_count);
move || {
reconnect_count_ref.set_value(0);
reconnect_count.set(0);
if let Some(connect) = connect_ref.get_value() {
connect();
}
}
};
let close = move || {
reconnect_count_ref.set_value(reconnect_limit);
if let Some(transport) = transport_ref.get_value() {
transport.close();
set_ready_state.set(ConnectionReadyState::Closing);
let close = {
let transport = Rc::clone(&transport);
let reconnect_count = Rc::clone(&reconnect_count);
spawn_local(async move {
let result = JsFuture::from(transport.closed()).await;
set_ready_state.set(ConnectionReadyState::Closed);
move || {
reconnect_count.set(reconnect_limit);
match result {
Ok(_) => {
on_close();
if let Some(transport) = transport.take() {
transport.close();
set_ready_state.set(ConnectionReadyState::Closing);
spawn_local(async move {
let result = JsFuture::from(transport.closed()).await;
set_ready_state.set(ConnectionReadyState::Closed);
match result {
Ok(_) => {
on_close();
}
Err(e) => {
// TODO : handle error?
}
}
Err(e) => {
// TODO : handle error?
}
}
});
});
}
}
};
let (datagrams_signal, set_datagrams) = create_signal(None::<Vec<u8>>);
let datagrams = Signal::derive(move || {
// lazily create datagrams reader listener
if ready_state.get() == ConnectionReadyState::Open {
initialize_datagrams_reader(
transport_ref,
datagrams_reader_initialized_ref,
let datagrams = Signal::derive({
let transport = Rc::clone(&transport);
let datagrams_reader_initialized = Rc::clone(&datagrams_reader_initialized);
move || {
lazy_initialize_reader(
ready_state,
transport,
datagrams_reader_initialized,
set_datagrams,
);
}
datagrams_signal.get()
datagrams_signal.get()
}
});
let send_datagrams = move |data| {
if let Some(transport) = transport_ref.get_value() {
let writer = get_or_create_datagrams_writer(datagrams_writer_ref, transport);
let send_datagrams = {
let transport = Rc::clone(&transport);
let datagrams_writer = Rc::clone(&datagrams_writer);
let _ = writer.write_with_chunk(&data.into());
move |data| {
if let Some(transport) = transport.borrow().as_ref() {
let writer = get_or_create_datagrams_writer(datagrams_writer, transport);
let _ = writer.write_with_chunk(&data.into());
}
}
};
// TODO : reliable streams
on_cleanup(move || {
unmounted.set(true);
close();
});
UseWebTransportReturn {
ready_state: ready_state.into(),
datagrams,
@ -170,10 +201,10 @@ pub fn use_webtransport_with_options(
}
fn get_or_create_datagrams_writer(
datagrams_writer_ref: StoredValue<Option<WritableStreamDefaultWriter>>,
transport: WebTransport,
) -> WritableStreamDefaultWriter {
if let Some(writer) = datagrams_writer_ref.get_value() {
datagrams_writer: Rc<RefCell<Option<web_sys::WritableStreamDefaultWriter>>>,
transport: &web_sys::WebTransport,
) -> web_sys::WritableStreamDefaultWriter {
if let Some(writer) = datagrams_writer.borrow().clone() {
writer
} else {
let writer = transport
@ -181,36 +212,39 @@ fn get_or_create_datagrams_writer(
.writable()
.get_writer()
.expect("should be able to get the writer");
datagrams_writer_ref.set_value(Some(writer.clone()));
datagrams_writer.replace(Some(writer.clone()));
writer
}
}
fn initialize_datagrams_reader(
transport_ref: StoredValue<Option<web_sys::WebTransport>>,
datagrams_reader_initialized_ref: StoredValue<bool>,
fn lazy_initialize_reader(
ready_state: ReadSignal<ConnectionReadyState>,
transport: Rc<RefCell<Option<web_sys::WebTransport>>>,
initialized: Rc<Cell<bool>>,
set_datagrams: WriteSignal<Option<Vec<u8>>>,
) {
if !datagrams_reader_initialized_ref.get_value() {
if let Some(transport) = transport_ref.get_value() {
datagrams_reader_initialized_ref.set_value(true);
if ready_state.get() == ConnectionReadyState::Open {
if !initialized.get() {
if let Some(transport) = transport.borrow().as_ref() {
initialized.set(true);
listen_to_stream(
transport.datagrams().readable(),
move || datagrams_reader_initialized_ref.set_value(false),
set_datagrams,
);
listen_to_stream(
transport.datagrams().readable(),
move || initialized.set(false),
set_datagrams,
);
}
}
}
}
fn listen_to_stream(
readable_stream: ReadableStream,
readable_stream: web_sys::ReadableStream,
on_done: fn(),
set_signal: WriteSignal<Option<Vec<u8>>>,
) {
let mut reader_options = web_sys::ReadableStreamGetReaderOptions::new();
reader_options.mode(ReadableStreamReaderMode::Byob);
reader_options.mode(web_sys::ReadableStreamReaderMode::Byob);
let reader: web_sys::ReadableStreamByobReader = readable_stream
.get_reader_with_options(&reader_options)
@ -257,14 +291,19 @@ fn listen_to_stream(
pub struct UseWebTransportOptions {
/// Callback when `WebTransport` is ready.
on_open: Rc<dyn Fn()>,
/// Error callback.
on_error: Rc<dyn Fn(WebTransportError)>,
/// Callback when `WebTransport` is closed.
on_close: Rc<dyn Fn()>,
/// Retry times. Defaults to 3.
reconnect_limit: u64,
/// Retry interval in ms. Defaults to 3000.
reconnect_interval: u64,
/// If `true` the `WebSocket` connection will immediately be opened when calling this function.
/// If `false` you have to manually call the `open` function.
/// Defaults to `true`.