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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,6 +1,6 @@ | ||
| [package] | ||
| name = "socks5-impl" | ||
| version = "0.5.10" | ||
| version = "0.5.11" | ||
| authors = ["ssrlive <[email protected]>"] | ||
| description = "Fundamental abstractions and async read / write functions for SOCKS5 protocol and Relatively low-level asynchronized SOCKS5 server implementation based on tokio" | ||
| categories = ["network-programming", "asynchronous"] | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,94 @@ | ||
| use std::{error::Error, net::SocketAddr}; | ||
| use tokio::{ | ||
| io::{AsyncReadExt, AsyncWriteExt}, | ||
| net::{TcpListener, ToSocketAddrs, UdpSocket}, | ||
| }; | ||
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| /// Simple echo server. | ||
| #[derive(clap::Parser, Debug, Clone, PartialEq, Eq)] | ||
| #[command(author, version, about = "Simple echo server.", long_about = None)] | ||
| pub struct CmdOpt { | ||
| /// Echo server listen address. | ||
| #[clap(short, long, value_name = "address:port", default_value = "127.0.0.1:8080")] | ||
| listen_addr: SocketAddr, | ||
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| /// timeout for TCP connection | ||
| #[clap(short, long, value_name = "seconds", default_value = "10")] | ||
| tcp_timeout: u64, | ||
| } | ||
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| async fn tcp_main<A: ToSocketAddrs>(addr: A, tcp_timeout: u64) -> std::io::Result<()> { | ||
| let listener = TcpListener::bind(addr).await?; | ||
| log::info!("[TCP] listening on: {}", listener.local_addr()?); | ||
| loop { | ||
| let (mut socket, peer) = listener.accept().await?; | ||
| tokio::spawn(async move { | ||
| let block = async move { | ||
| let mut buf = vec![0; 1024]; | ||
| log::info!("[TCP] incoming peer {}", peer); | ||
| loop { | ||
| let duration = std::time::Duration::from_secs(tcp_timeout); | ||
| let n = tokio::time::timeout(duration, socket.read(&mut buf)).await??; | ||
| if n == 0 { | ||
| log::info!("[TCP] {} exit", peer); | ||
| break; | ||
| } | ||
| let amt = socket.write(&buf[0..n]).await?; | ||
| log::info!("[TCP] Echoed {}/{} bytes to {}", amt, n, peer); | ||
| } | ||
| Ok::<(), std::io::Error>(()) | ||
| }; | ||
| if let Err(err) = block.await { | ||
| log::info!("[TCP] {}", err); | ||
| } | ||
| }); | ||
| } | ||
| } | ||
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| async fn udp_main<A: ToSocketAddrs>(addr: A) -> std::io::Result<()> { | ||
| let socket = UdpSocket::bind(&addr).await?; | ||
| log::info!("[UDP] Listening on: {}", socket.local_addr()?); | ||
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| let mut buf = vec![0; 1024]; | ||
| let mut to_send = None; | ||
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| loop { | ||
| if let Some((size, peer)) = to_send { | ||
| let amt = socket.send_to(&buf[..size], &peer).await?; | ||
| log::info!("[UDP] Echoed {}/{} bytes to {}", amt, size, peer); | ||
| } | ||
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| to_send = Some(socket.recv_from(&mut buf).await?); | ||
| } | ||
| } | ||
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| #[tokio::main] | ||
| async fn main() -> Result<(), Box<dyn Error + Send + Sync + 'static>> { | ||
| let opt: CmdOpt = clap::Parser::parse(); | ||
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| env_logger::Builder::from_env(env_logger::Env::default().default_filter_or("trace")).init(); | ||
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| let addr = opt.listen_addr; | ||
| let _tcp = tokio::spawn(async move { | ||
| tcp_main(&addr, opt.tcp_timeout).await?; | ||
| Ok::<(), std::io::Error>(()) | ||
| }); | ||
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| let _udp = tokio::spawn(async move { | ||
| udp_main(&addr).await?; | ||
| Ok::<(), std::io::Error>(()) | ||
| }); | ||
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| let (tx, mut rx) = tokio::sync::mpsc::channel::<()>(1); | ||
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| ctrlc2::set_async_handler(async move { | ||
| tx.send(()).await.unwrap(); | ||
| log::info!("Ctrl-C received, shutting down..."); | ||
| }) | ||
| .await; | ||
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| rx.recv().await.unwrap(); | ||
| log::info!("Exiting..."); | ||
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| Ok(()) | ||
| } |