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use fast_socks5::server::{AcceptAuthentication, Socks5Server};
use futures::StreamExt;
use std::{io, net::SocketAddr};
#[derive(thiserror::Error, Debug)]
pub enum Error {
#[error("Failed to start SOCKS5 server")]
StartSocksServer(#[source] io::Error),
}
pub struct Handle {
handle: tokio::task::JoinHandle<()>,
}
/// Spawn a SOCKS server bound to `bind_addr`
pub async fn spawn(bind_addr: SocketAddr) -> Result<Handle, Error> {
let socks_server: Socks5Server<AcceptAuthentication> = Socks5Server::bind(bind_addr)
.await
.map_err(Error::StartSocksServer)?;
let handle = tokio::spawn(async move {
let mut incoming = socks_server.incoming();
while let Some(new_client) = incoming.next().await {
match new_client {
Ok(socket) => {
let fut = socket.upgrade_to_socks5();
// Act as normal SOCKS server
tokio::spawn(async move {
match fut.await {
Ok(_socket) => log::info!("socks client disconnected"),
Err(error) => log::error!("socks client failed: {error}"),
}
});
}
Err(error) => {
log::error!("failed to accept socks client: {error}");
}
}
}
});
Ok(Handle { handle })
}
impl Handle {
pub fn close(&self) {
self.handle.abort();
}
}
impl Drop for Handle {
fn drop(&mut self) {
self.close();
}
}
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