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|
use std::net::SocketAddr;
use async_trait::async_trait;
use futures_util::SinkExt;
use karyon_core::async_runtime::{
io::{split, ReadHalf, WriteHalf},
lock::Mutex,
net::{TcpListener as AsyncTcpListener, TcpStream},
};
use crate::{
codec::Codec,
connection::{Conn, Connection, ToConn},
endpoint::Endpoint,
listener::{ConnListener, Listener, ToListener},
stream::{ReadStream, WriteStream},
Result,
};
/// TCP configuration
#[derive(Clone)]
pub struct TcpConfig {
pub nodelay: bool,
}
impl Default for TcpConfig {
fn default() -> Self {
Self { nodelay: true }
}
}
/// TCP connection implementation of the [`Connection`] trait.
pub struct TcpConn<C> {
read_stream: Mutex<ReadStream<ReadHalf<TcpStream>, C>>,
write_stream: Mutex<WriteStream<WriteHalf<TcpStream>, C>>,
peer_endpoint: Endpoint,
local_endpoint: Endpoint,
}
impl<C> TcpConn<C>
where
C: Codec + Clone,
{
/// Creates a new TcpConn
pub fn new(
socket: TcpStream,
codec: C,
peer_endpoint: Endpoint,
local_endpoint: Endpoint,
) -> Self {
let (read, write) = split(socket);
let read_stream = Mutex::new(ReadStream::new(read, codec.clone()));
let write_stream = Mutex::new(WriteStream::new(write, codec));
Self {
read_stream,
write_stream,
peer_endpoint,
local_endpoint,
}
}
}
#[async_trait]
impl<C> Connection for TcpConn<C>
where
C: Codec + Clone,
{
type Item = C::Item;
fn peer_endpoint(&self) -> Result<Endpoint> {
Ok(self.peer_endpoint.clone())
}
fn local_endpoint(&self) -> Result<Endpoint> {
Ok(self.local_endpoint.clone())
}
async fn recv(&self) -> Result<Self::Item> {
self.read_stream.lock().await.recv().await
}
async fn send(&self, msg: Self::Item) -> Result<()> {
self.write_stream.lock().await.send(msg).await
}
}
pub struct TcpListener<C> {
inner: AsyncTcpListener,
config: TcpConfig,
codec: C,
}
impl<C> TcpListener<C>
where
C: Codec,
{
pub fn new(listener: AsyncTcpListener, config: TcpConfig, codec: C) -> Self {
Self {
inner: listener,
config: config.clone(),
codec,
}
}
}
#[async_trait]
impl<C> ConnListener for TcpListener<C>
where
C: Codec + Clone,
{
type Item = C::Item;
fn local_endpoint(&self) -> Result<Endpoint> {
Ok(Endpoint::new_tcp_addr(self.inner.local_addr()?))
}
async fn accept(&self) -> Result<Conn<C::Item>> {
let (socket, _) = self.inner.accept().await?;
socket.set_nodelay(self.config.nodelay)?;
let peer_endpoint = socket.peer_addr().map(Endpoint::new_tcp_addr)?;
let local_endpoint = socket.local_addr().map(Endpoint::new_tcp_addr)?;
Ok(Box::new(TcpConn::new(
socket,
self.codec.clone(),
peer_endpoint,
local_endpoint,
)))
}
}
/// Connects to the given TCP address and port.
pub async fn dial<C>(endpoint: &Endpoint, config: TcpConfig, codec: C) -> Result<TcpConn<C>>
where
C: Codec + Clone,
{
let addr = SocketAddr::try_from(endpoint.clone())?;
let socket = TcpStream::connect(addr).await?;
socket.set_nodelay(config.nodelay)?;
let peer_endpoint = socket.peer_addr().map(Endpoint::new_tcp_addr)?;
let local_endpoint = socket.local_addr().map(Endpoint::new_tcp_addr)?;
Ok(TcpConn::new(socket, codec, peer_endpoint, local_endpoint))
}
/// Listens on the given TCP address and port.
pub async fn listen<C>(endpoint: &Endpoint, config: TcpConfig, codec: C) -> Result<TcpListener<C>>
where
C: Codec,
{
let addr = SocketAddr::try_from(endpoint.clone())?;
let listener = AsyncTcpListener::bind(addr).await?;
Ok(TcpListener::new(listener, config, codec))
}
impl<C> From<TcpListener<C>> for Box<dyn ConnListener<Item = C::Item>>
where
C: Clone + Codec,
{
fn from(listener: TcpListener<C>) -> Self {
Box::new(listener)
}
}
impl<C> ToConn for TcpConn<C>
where
C: Codec + Clone,
{
type Item = C::Item;
fn to_conn(self) -> Conn<Self::Item> {
Box::new(self)
}
}
impl<C> ToListener for TcpListener<C>
where
C: Clone + Codec,
{
type Item = C::Item;
fn to_listener(self) -> Listener<Self::Item> {
self.into()
}
}
|
