From 2101745c800252b8970aaefa7cd8ccb5f14167cd Mon Sep 17 00:00:00 2001
From: alex <asxalex@163.com>
Date: Thu, 23 Apr 2026 10:40:47 +0800
Subject: [PATCH] added support for linux

---
 .vscode/settings.json    |  2 +-
 Cargo.lock               | 18 +++++++++---------
 src/network/tun_linux.rs |  5 +++++
 src/quic/mod.rs          | 13 ++++++++-----
 src/utils/socks.rs       |  9 ++++++++-
 5 files changed, 31 insertions(+), 16 deletions(-)

diff --git a/.vscode/settings.json b/.vscode/settings.json
index 9eb94d8..fb0827b 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,4 +1,4 @@
 {
-    "rust-analyzer.cargo.target": "x86_64-pc-windows-gnu",
+    // "rust-analyzer.cargo.target": "x86_64-pc-windows-gnu",
     // "rust-analyzer.cargo.features": ["tun"]
 }
\ No newline at end of file
diff --git a/Cargo.lock b/Cargo.lock
index c6948f3..62e970b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -129,7 +129,7 @@ version = "1.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "40c48f72fd53cd289104fc64099abca73db4166ad86ea0b4341abe65af83dadc"
 dependencies = [
- "windows-sys 0.61.2",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
@@ -140,7 +140,7 @@ checksum = "291e6a250ff86cd4a820112fb8898808a366d8f9f58ce16d1f538353ad55747d"
 dependencies = [
  "anstyle",
  "once_cell_polyfill",
- "windows-sys 0.61.2",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
@@ -884,7 +884,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb"
 dependencies = [
  "libc",
- "windows-sys 0.61.2",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -1869,7 +1869,7 @@ version = "0.50.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7957b9740744892f114936ab4a57b3f487491bbeafaf8083688b16841a4240e5"
 dependencies = [
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -2614,7 +2614,7 @@ dependencies = [
  "errno",
  "libc",
  "linux-raw-sys",
- "windows-sys 0.61.2",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -2682,7 +2682,7 @@ dependencies = [
  "security-framework",
  "security-framework-sys",
  "webpki-root-certs",
- "windows-sys 0.61.2",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -2965,7 +2965,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3a766e1110788c36f4fa1c2b71b387a7815aa65f88ce0229841826633d93723e"
 dependencies = [
  "libc",
- "windows-sys 0.61.2",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
@@ -3329,7 +3329,7 @@ dependencies = [
  "getrandom 0.4.2",
  "once_cell",
  "rustix",
- "windows-sys 0.61.2",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -4029,7 +4029,7 @@ version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2a7b1c03c876122aa43f3020e6c3c3ee5c05081c9a00739faf7503aeba10d22"
 dependencies = [
- "windows-sys 0.61.2",
+ "windows-sys 0.48.0",
 ]
 
 [[package]]
diff --git a/src/network/tun_linux.rs b/src/network/tun_linux.rs
index 503b33c..74bdc4a 100755
--- a/src/network/tun_linux.rs
+++ b/src/network/tun_linux.rs
@@ -76,6 +76,11 @@ pub fn new_iface(tunname: &str, mode: Mode) -> Iface {
 }
 
 impl Iface {
+
+    pub fn get_if_idx(&self) -> u32 {
+        0
+    }
+
     #[allow(unused)]
     pub fn with_packet_info(ifname: &str, mode: Mode) -> Result<Self> {
         Iface::open_tun(ifname, mode, true)
diff --git a/src/quic/mod.rs b/src/quic/mod.rs
index 04560c8..b49bf80 100644
--- a/src/quic/mod.rs
+++ b/src/quic/mod.rs
@@ -2,8 +2,6 @@ use std::fs::File;
 use std::io::BufReader;
 use std::net::SocketAddr;
 use std::net::UdpSocket;
-use std::os::windows::io::FromRawSocket;
-use std::os::windows::io::IntoRawSocket;
 use std::path::Path;
 use std::sync::Arc;
 
@@ -21,9 +19,15 @@ use rustls_pemfile::{certs, private_key};
 use socket2::Domain;
 use socket2::Protocol;
 
-use crate::get_default_interface;
 use crate::set_unicast_if_v4;
 
+fn convert_to_std_socket(sock: socket2::Socket) -> std::net::UdpSocket {
+    let std_socket: std::net::UdpSocket = sock.into();
+    std_socket.set_nonblocking(true);
+    std_socket
+}
+
+
 pub fn quic_init(iface: &Option<Interface>) -> Endpoint {
     let default_provider = ring::default_provider();
     CryptoProvider::install_default(default_provider).unwrap();
@@ -67,8 +71,7 @@ pub fn quic_init(iface: &Option<Interface>) -> Endpoint {
         set_unicast_if_v4(&socket2, iface);
     }
 
-    let std_socket = unsafe { UdpSocket::from_raw_socket(socket2.into_raw_socket()) };
-    std_socket.set_nonblocking(true);
+    let std_socket = convert_to_std_socket(socket2);
 
     rustls_config.alpn_protocols = vec![b"punchnet/1.0".to_vec()];
 
diff --git a/src/utils/socks.rs b/src/utils/socks.rs
index 00a1625..7d075e3 100755
--- a/src/utils/socks.rs
+++ b/src/utils/socks.rs
@@ -4,7 +4,7 @@ use sdlan_sn_rs::{
     utils::{Result, SDLanError},
 };
 use socket2::{Domain, Protocol, SockAddr};
-use std::net::{IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4};
+use std::{net::{IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4}, num::NonZeroU32};
 use tokio::net::ToSocketAddrs;
 use tracing::{debug, error};
 
@@ -109,6 +109,13 @@ impl Socket {
     }
 }
 
+#[cfg(not(target_os = "windows"))]
+pub fn set_unicast_if_v4(sock: &socket2::Socket, interface: &Interface) -> Result<()> {
+    sock.bind_device_by_index_v4(NonZeroU32::new(interface.index))?;
+    Ok(())
+}
+
+#[cfg(target_os = "windows")]
 pub fn set_unicast_if_v4(sock: &socket2::Socket, interface: &Interface) -> Result<()> {
     use std::os::windows::io::AsRawSocket;
     use windows_sys::Win32::Networking::WinSock::{setsockopt, IPPROTO_IP, IP_UNICAST_IF, SOCKET};