1 files changed, 82 insertions, 0 deletions
diff --git a/net/src/transports/tcp.rs b/net/src/transports/tcp.rs
new file mode 100644
index 0000000..5ff7b28
--- /dev/null
+++ b/net/src/transports/tcp.rs
@@ -0,0 +1,82 @@
+use async_trait::async_trait;
+
+use smol::{
+    io::{split, AsyncReadExt, AsyncWriteExt, ReadHalf, WriteHalf},
+    lock::Mutex,
+    net::{TcpListener, TcpStream},
+};
+
+use crate::{
+    connection::Connection,
+    endpoint::{Addr, Endpoint, Port},
+    listener::Listener,
+    Result,
+};
+
+/// TCP network connection implementations of the `Connection` trait.
+pub struct TcpConn {
+    inner: TcpStream,
+    read: Mutex<ReadHalf<TcpStream>>,
+    write: Mutex<WriteHalf<TcpStream>>,
+}
+
+impl TcpConn {
+    /// Creates a new TcpConn
+    pub fn new(conn: TcpStream) -> Self {
+        let (read, write) = split(conn.clone());
+        Self {
+            inner: conn,
+            read: Mutex::new(read),
+            write: Mutex::new(write),
+        }
+    }
+}
+
+#[async_trait]
+impl Connection for TcpConn {
+    fn peer_endpoint(&self) -> Result<Endpoint> {
+        Ok(Endpoint::new_tcp_addr(&self.inner.peer_addr()?))
+    }
+
+    fn local_endpoint(&self) -> Result<Endpoint> {
+        Ok(Endpoint::new_tcp_addr(&self.inner.local_addr()?))
+    }
+
+    async fn recv(&self, buf: &mut [u8]) -> Result<usize> {
+        self.read.lock().await.read_exact(buf).await?;
+        Ok(buf.len())
+    }
+
+    async fn send(&self, buf: &[u8]) -> Result<usize> {
+        self.write.lock().await.write_all(buf).await?;
+        Ok(buf.len())
+    }
+}
+
+#[async_trait]
+impl Listener for TcpListener {
+    fn local_endpoint(&self) -> Result<Endpoint> {
+        Ok(Endpoint::new_tcp_addr(&self.local_addr()?))
+    }
+
+    async fn accept(&self) -> Result<Box<dyn Connection>> {
+        let (conn, _) = self.accept().await?;
+        conn.set_nodelay(true)?;
+        Ok(Box::new(TcpConn::new(conn)))
+    }
+}
+
+/// Connects to the given TCP address and port.
+pub async fn dial_tcp(addr: &Addr, port: &Port) -> Result<TcpConn> {
+    let address = format!("{}:{}", addr, port);
+    let conn = TcpStream::connect(address).await?;
+    conn.set_nodelay(true)?;
+    Ok(TcpConn::new(conn))
+}
+
+/// Listens on the given TCP address and port.
+pub async fn listen_tcp(addr: &Addr, port: &Port) -> Result<TcpListener> {
+    let address = format!("{}:{}", addr, port);
+    let listener = TcpListener::bind(address).await?;
+    Ok(listener)
+}