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feat: support proxy_protocol_v2 #120

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feat: support proxy_protocol_v2 #120

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ecc6a72
feat: support proxy_protocol_v2
Oct 20, 2024
bea0518
remove useless comments
Oct 20, 2024
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1 change: 1 addition & 0 deletions Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,7 @@ tracing-subscriber = { version = "0.3", features = ["env-filter"] }
webpki-roots = "0.26"
serde = { version = "1", features = ["derive"] }
serde_json = "1"
ppp = "2.0"

[profile.release]
lto = true
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17 changes: 17 additions & 0 deletions src/server.rs
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Expand Up @@ -18,6 +18,8 @@ use monoio::{
net::TcpStream,
};
use serde::Deserialize;
use std::net::SocketAddr;
use ppp::v2;

use crate::{
helper_v2::{
Expand Down Expand Up @@ -314,6 +316,17 @@ impl ShadowTlsServer {
let hmac_sr_s = Hmac::new(&self.password, (&server_random, b"S"));
let mut hmac_sr = Hmac::new(&self.password, (&server_random, &[]));

let client_address = in_stream.peer_addr()?; // Get the client's IP address
let server_address = resolve(&self.target_addr).await?; // Server address to connect to

let header = v2::Builder::with_addresses(
v2::Version::Two | v2::Command::Proxy,
v2::Protocol::Stream,
(client_address, server_address),
)
.build()
.unwrap();

// stage 1.3.2: copy ShadowTLS Client -> Handshake Server until hamc matches
// stage 1.3.3: copy and modify Handshake Server -> ShadowTLS Client until 1.3.2 stops
let (mut c_read, mut c_write) = in_stream.into_split();
Expand Down Expand Up @@ -357,6 +370,10 @@ impl ShadowTlsServer {
// stage 2.3: copy Data Server -> ShadowTLS Client
let mut data_stream = TcpStream::connect_addr(resolve(&self.target_addr).await?).await?;
mod_tcp_conn(&mut data_stream, true, self.nodelay);
// 发送 Proxy Protocol v2 头部到目标服务器
let (res, _) = data_stream.write_all(header).await;
res?; // 检查是否成功发送

let (res, _) = data_stream.write_all(pure_data).await;
res?;
verified_relay(
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