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use crate::peer::{IPeer, WSPeer};
use anyhow::{bail, Result};
use aqueue::Actor;
use futures_util::stream::SplitStream;
use futures_util::StreamExt;
use log::*;
use std::future::Future;
use std::marker::PhantomData;
use std::net::SocketAddr;
use std::sync::Arc;
use std::time::Duration;
use tokio::io::{AsyncRead, AsyncWrite};
use tokio::net::{TcpListener, TcpStream, ToSocketAddrs};
use tokio::task::JoinHandle;
use tokio_rustls::TlsAcceptor;
use tokio_tungstenite::tungstenite::protocol::WebSocketConfig;
use tokio_tungstenite::{accept_async_with_config, WebSocketStream};
use crate::stream::MaybeRustlsStream;
pub type ConnectEventType = fn(SocketAddr) -> bool;
pub struct WebSocketServer<I, R, T> {
listener: Option<TcpListener>,
tls_acceptor:Option<TlsAcceptor>,
connect_event: Option<ConnectEventType>,
input_event: Arc<I>,
config: Option<WebSocketConfig>,
load_timeout_secs: u64,
_phantom1: PhantomData<R>,
_phantom2: PhantomData<T>,
}
unsafe impl<I, R, T> Send for WebSocketServer<I, R, T> {}
unsafe impl<I, R, T> Sync for WebSocketServer<I, R, T> {}
impl<I, R, T> WebSocketServer<I, R, T>
where
I: Fn(SplitStream<WebSocketStream<MaybeRustlsStream<TcpStream>>>, Arc<Actor<WSPeer>>, T) -> R
+ Send
+ Sync
+ 'static,
R: Future<Output = Result<()>> + Send + 'static,
T: Clone + Send + 'static,
{
pub(crate) async fn new<A: ToSocketAddrs>(
addr: A,
input: I,
connect_event: Option<ConnectEventType>,
config: Option<WebSocketConfig>,
tls_acceptor:Option<TlsAcceptor>,
load_timeout_secs: u64,
) -> Result<Arc<Actor<WebSocketServer<I, R, T>>>> {
let listener = TcpListener::bind(addr).await?;
Ok(Arc::new(Actor::new(WebSocketServer {
listener: Some(listener),
tls_acceptor,
connect_event,
input_event: Arc::new(input),
config,
load_timeout_secs,
_phantom1: PhantomData::default(),
_phantom2: PhantomData::default(),
})))
}
#[inline]
async fn accept<S>(
stream: S,
tls_acceptor: Option<TlsAcceptor>
) -> Result<MaybeRustlsStream<S>>
where
S: AsyncRead + AsyncWrite + Unpin,
{
if let Some(acceptor) = tls_acceptor {
Ok(MaybeRustlsStream::ServerTls(acceptor.accept(stream).await?))
} else {
Ok(MaybeRustlsStream::Plain(stream))
}
}
pub async fn start(&mut self, token: T) -> Result<JoinHandle<Result<()>>> {
if let Some(listener) = self.listener.take() {
let connect_event = self.connect_event.take();
let input_event = self.input_event.clone();
let config = self.config;
let load_timeout_secs = self.load_timeout_secs;
let tls=self.tls_acceptor.clone();
let join: JoinHandle<Result<()>> = tokio::spawn(async move {
loop {
let (socket, addr) = listener.accept().await?;
if let Some(ref connect_event) = connect_event {
if !connect_event(addr) {
warn!("addr:{} not connect", addr);
continue;
}
}
trace!("start read:{}", addr);
let input = input_event.clone();
let peer_token = token.clone();
let tls_acceptor=tls.clone();
tokio::spawn(async move {
let socket=match Self::accept(socket,tls_acceptor).await{
Ok(socket)=>socket,
Err(err)=>{
error!("rustls error:{}",err);
return
}
};
match tokio::time::timeout(
Duration::from_secs(load_timeout_secs),
accept_async_with_config(socket, config),
)
.await
{
Ok(Ok(ws_stream)) => {
let (sender, reader) = ws_stream.split();
let peer = WSPeer::new(addr, sender);
if let Err(err) = (*input)(reader, peer.clone(), peer_token).await {
error!("input data error:{}", err);
}
if let Err(er) = peer.disconnect().await {
debug!("disconnect client:{:?} err:{}", peer.addr(), er);
} else {
debug!("{} disconnect", peer.addr())
}
}
Ok(Err(err)) => {
error!(
"ipaddress:{} init websocket error:{:?} disconnect!",
addr, err
);
}
Err(_) => {
error!(
"ipaddress:{} accept websocket init timeout disconnect!",
addr
);
}
}
});
}
});
return Ok(join);
}
bail!("not listener or repeat start")
}
}
#[async_trait::async_trait]
pub trait IWebSocketServer<T> {
async fn start(&self, token: T) -> Result<JoinHandle<Result<()>>>;
async fn start_block(&self, token: T) -> Result<()>;
}
#[async_trait::async_trait]
impl<I, R, T> IWebSocketServer<T> for Actor<WebSocketServer<I, R, T>>
where
I: Fn(SplitStream<WebSocketStream<MaybeRustlsStream<TcpStream>>>, Arc<Actor<WSPeer>>, T) -> R
+ Send
+ Sync
+ 'static,
R: Future<Output = Result<()>> + Send + 'static,
T: Clone + Send + Sync + 'static,
{
async fn start(&self, token: T) -> Result<JoinHandle<Result<()>>> {
self.inner_call(|inner| async move { inner.get_mut().start(token).await })
.await
}
async fn start_block(&self, token: T) -> Result<()> {
Self::start(self, token).await?.await??;
Ok(())
}
}
