windows default route

Cargo.lock

@@ -524,6 +524,16 @@ version = "0.9.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2459377285ad874054d797f3ccebf984978aa39129f6eafde5cdc8315b612f8"
 
+[[package]]
+name = "core-foundation"
+version = "0.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "91e195e091a93c46f7102ec7818a2aa394e1e1771c3ab4825963fa03e45afb8f"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
 [[package]]
 name = "core-foundation"
 version = "0.10.1"
@@ -698,6 +708,23 @@ dependencies = [
  "parking_lot_core",
 ]
 
+[[package]]
+name = "default-net"
+version = "0.22.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0c5a6569a908354d49b10db3c516d69aca1eccd97562fd31c98b13f00b73ca66"
+dependencies = [
+ "dlopen2",
+ "libc",
+ "memalloc",
+ "netlink-packet-core",
+ "netlink-packet-route",
+ "netlink-sys",
+ "once_cell",
+ "system-configuration",
+ "windows 0.48.0",
+]
+
 [[package]]
 name = "der"
 version = "0.7.10"
@@ -772,6 +799,17 @@ dependencies = [
  "syn 2.0.117",
 ]
 
+[[package]]
+name = "dlopen2"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "09b4f5f101177ff01b8ec4ecc81eead416a8aa42819a2869311b3420fa114ffa"
+dependencies = [
+ "libc",
+ "once_cell",
+ "winapi",
+]
+
 [[package]]
 name = "dns-lookup"
 version = "2.1.1"
@@ -1694,6 +1732,12 @@ dependencies = [
  "digest",
 ]
 
+[[package]]
+name = "memalloc"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df39d232f5c40b0891c10216992c2f250c054105cb1e56f0fc9032db6203ecc1"
+
 [[package]]
 name = "memchr"
 version = "2.8.0"
@@ -1761,6 +1805,54 @@ dependencies = [
  "syn 2.0.117",
 ]
 
+[[package]]
+name = "netlink-packet-core"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72724faf704479d67b388da142b186f916188505e7e0b26719019c525882eda4"
+dependencies = [
+ "anyhow",
+ "byteorder",
+ "netlink-packet-utils",
+]
+
+[[package]]
+name = "netlink-packet-route"
+version = "0.17.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "053998cea5a306971f88580d0829e90f270f940befd7cf928da179d4187a5a66"
+dependencies = [
+ "anyhow",
+ "bitflags 1.3.2",
+ "byteorder",
+ "libc",
+ "netlink-packet-core",
+ "netlink-packet-utils",
+]
+
+[[package]]
+name = "netlink-packet-utils"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ede8a08c71ad5a95cdd0e4e52facd37190977039a4704eb82a283f713747d34"
+dependencies = [
+ "anyhow",
+ "byteorder",
+ "paste",
+ "thiserror 1.0.69",
+]
+
+[[package]]
+name = "netlink-sys"
+version = "0.8.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cd6c30ed10fa69cc491d491b85cc971f6bdeb8e7367b7cde2ee6cc878d583fae"
+dependencies = [
+ "bytes",
+ "libc",
+ "log",
+]
+
 [[package]]
 name = "nom"
 version = "7.1.3"
@@ -2153,6 +2245,7 @@ dependencies = [
  "crc32fast",
  "daemonize",
  "dashmap 6.1.0",
+ "default-net",
  "dns-lookup",
  "etherparse",
  "futures-util",
@@ -2179,11 +2272,13 @@ dependencies = [
  "serde",
  "serde_json",
  "simple-dns",
+ "socket2",
  "structopt",
  "tokio",
  "tokio-util",
  "tracing",
  "winapi",
+ "windows-sys 0.61.2",
  "wintun",
 ]
 
@@ -2575,7 +2670,7 @@ version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1d99feebc72bae7ab76ba994bb5e121b8d83d910ca40b36e0921f53becc41784"
 dependencies = [
- "core-foundation",
+ "core-foundation 0.10.1",
  "core-foundation-sys",
  "jni",
  "log",
@@ -2676,7 +2771,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b7f4bc775c73d9a02cde8bf7b2ec4c9d12743edf609006c7facc23998404cd1d"
 dependencies = [
  "bitflags 2.11.0",
- "core-foundation",
+ "core-foundation 0.10.1",
  "core-foundation-sys",
  "libc",
  "security-framework-sys",
@@ -3193,6 +3288,27 @@ dependencies = [
  "syn 2.0.117",
 ]
 
+[[package]]
+name = "system-configuration"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba3a3adc5c275d719af8cb4272ea1c4a6d668a777f37e115f6d11ddbc1c8e0e7"
+dependencies = [
+ "bitflags 1.3.2",
+ "core-foundation 0.9.4",
+ "system-configuration-sys",
+]
+
+[[package]]
+name = "system-configuration-sys"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a75fb188eb626b924683e3b95e3a48e63551fcfb51949de2f06a9d91dbee93c9"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
 [[package]]
 name = "tar"
 version = "0.4.45"
@@ -3922,6 +4038,15 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 
+[[package]]
+name = "windows"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e686886bc078bc1b0b600cac0147aadb815089b6e4da64016cbd754b6342700f"
+dependencies = [
+ "windows-targets 0.48.5",
+]
+
 [[package]]
 name = "windows"
 version = "0.52.0"
@@ -4322,7 +4447,7 @@ dependencies = [
  "libloading",
  "log",
  "thiserror 1.0.69",
- "windows",
+ "windows 0.52.0",
 ]
 
 [[package]]

Cargo.toml

@@ -44,6 +44,8 @@ ipnet = "2.12.0"
 arc-swap = "1.9.0"
 rustls-native-certs = "0.8.3"
 simple-dns = "0.11.2"
+default-net = "0.22.0"
+socket2 = "0.6.3"
 # rolling-file = { path = "../rolling-file" }
 
 [target.'cfg(unix)'.dependencies]
@@ -54,6 +56,7 @@ daemonize = "0.5.0"
 [target.'cfg(windows)'.dependencies]
 wintun = "0.4.0"
 winapi = "0.3.9"
+windows-sys = "0.61.2"
 
 [features]
 tun = []

src/network/node.rs

@@ -1,10 +1,10 @@
 use arc_swap::ArcSwap;
 use dashmap::DashMap;
+use default_net::Interface;
 use prost::Message;
 use quinn::Endpoint;
 use rsa::RsaPrivateKey;
 use sdlan_sn_rs::config::{AF_INET, AF_INET6};
-use tokio::net::UdpSocket;
 use std::any::Any;
 use std::future::Future;
 use std::net::SocketAddr;
@@ -12,17 +12,22 @@ use std::sync::atomic::{AtomicBool, AtomicU32, AtomicU64, AtomicU8, Ordering};
 use std::sync::{Arc, Mutex, RwLock};
 use std::time::Duration;
 use tokio::io::AsyncReadExt;
+use tokio::net::UdpSocket;
 use tokio::sync::mpsc::Sender;
 use tracing::{debug, error, warn};
 
 use crate::network::{ArpTable, RouteTable2};
-use crate::quic::quic_init;
-use crate::{CommandLine, ConnectionInfo, DNSMatcher, MyEncryptor, RuleCache, get_base_dir};
 use crate::pb::{
-    SdlArpRequest, SdlEmpty, SdlStunProbe, SdlStunProbeReply, encode_to_tcp_message, encode_to_udp_message
+    encode_to_tcp_message, encode_to_udp_message, SdlArpRequest, SdlEmpty, SdlStunProbe,
+    SdlStunProbeReply,
+};
+use crate::quic::quic_init;
+use crate::tcp::{get_quic_write_conn, NatType, PacketType, StunProbeAttr};
+use crate::utils::Socket;
+use crate::{
+    get_base_dir, get_default_interface, CommandLine, ConnectionInfo, DNSMatcher, MyEncryptor,
+    RuleCache,
 };
-use crate::tcp::{NatType, PacketType, StunProbeAttr, get_quic_write_conn};
-use crate::utils::{Socket};
 
 use sdlan_sn_rs::peer::{IpSubnet, V6Info};
 
@@ -32,7 +37,7 @@ use super::device::{DeviceConfig, Mode};
 use super::tun::{new_iface, Iface};
 use tokio::fs::File;
 
-use sdlan_sn_rs::utils::{Mac, gen_rsa_keys, load_private_key_file, save_to_file};
+use sdlan_sn_rs::utils::{gen_rsa_keys, load_private_key_file, save_to_file, Mac};
 use sdlan_sn_rs::utils::{Result, SDLanError};
 
 static EDGE: OnceCell<Node> = OnceCell::new();
@@ -51,7 +56,7 @@ pub async fn init_edge(
     udp_sock_for_global_dns: Arc<UdpSocket>,
     hostname: String,
     server_ip: String,
-    install_channel: String
+    install_channel: String,
 ) -> Result<()> {
     // gen public key
     let rsa_path = format!("{}/.client", get_base_dir());
@@ -69,13 +74,33 @@ pub async fn init_edge(
     // let edge_uuid = create_or_load_uuid("")?;
     //let node_conf = parse_config(edge_uuid, &args).await?;
 
-    let Ok(sock_v4) = Socket::build(node_conf._local_port, true, false, args.tos).await else {
+    let default_interface = match get_default_interface() {
+        Ok(interface) => {
+            println!("get default interface: {:?}", interface);
+            Some(interface)
+        }
+        Err(e) => {
+            println!("failed to get default net interface: {}", e.as_str());
+            None
+        }
+    };
+
+    let Ok(sock_v4) = Socket::build(
+        node_conf._local_port,
+        true,
+        false,
+        args.tos,
+        &default_interface,
+    )
+    .await
+    else {
         panic!("failed to build sock for sock v4");
     };
 
     let mut sock_multicast = None;
     if !node_conf._drop_multicast {
-        sock_multicast = Some(Socket::build(MULTICAST_PORT, true, true, 0).await?);
+        sock_multicast =
+            Some(Socket::build(MULTICAST_PORT, true, true, 0, &default_interface).await?);
     }
     // let sock_multicast = Socket::build(MULTICAST_PORT, true, true, 0).await?;
     // allow multicast
@@ -88,6 +113,7 @@ pub async fn init_edge(
         pubkey,
         node_conf,
         sock_v4,
+        &default_interface,
         sock_multicast,
         // token,
         // network_code,
@@ -103,7 +129,8 @@ pub async fn init_edge(
         install_channel,
     );
 
-    edge.route_table.parse_and_add_route(&args.route_file, &args.route_str);
+    edge.route_table
+        .parse_and_add_route(&args.route_file, &args.route_str);
     let matcher = Arc::clone(&edge.dns_matcher);
 
     do_init_edge(edge)?;
@@ -147,7 +174,7 @@ pub struct StartStopInfo {
 
 pub struct StringToken<T>(RwLock<T>);
 
-impl <T: Clone> StringToken<T> {
+impl<T: Clone> StringToken<T> {
     pub fn new(value: T) -> Self {
         Self(RwLock::new(value))
     }
@@ -214,7 +241,6 @@ pub struct Node {
     // user token info
     // pub _token: Mutex<String>,
     // pub network_code: Mutex<String>,
-
     pub device_config: DeviceConfig,
     pub device: Iface,
 
@@ -222,7 +248,6 @@ pub struct Node {
     pub authorized: AtomicBool,
     // pub header_key: RwLock<Arc<Vec<u8>>>,
     // pub encrypt_key: RwLock<Arc<Vec<u8>>>,
-
     pub rsa_pubkey: String,
     pub rsa_private: RsaPrivateKey,
 
@@ -262,7 +287,6 @@ pub struct Node {
 
     //cookie_match: DashMap<u32, oneshot::Sender<SdlStunProbeReply>>,
     pub cookie_match: Queryer,
-
     // packet_id_match: DashMap<u32, oneshot::Sender<RegisterSuperFeedback>>,
 }
 
@@ -285,7 +309,7 @@ impl Node {
         ip_net: u32,
         ip_net_bit_len: u8,
         identity_id: u32,
-        hostname: Option<String>
+        hostname: Option<String>,
     ) -> Result<()> {
         if let Some(host) = hostname {
             let idfile = format!("{}/.host", get_base_dir());
@@ -355,7 +379,9 @@ impl Node {
         // *self.network_code.lock().unwrap() = network_code;
         let id = self.get_next_packet_id();
 
-        let res = self.cookie_match.do_action_and_wait_for(
+        let res = self
+            .cookie_match
+            .do_action_and_wait_for(
                 0,
                 || async {
                     let _ = self
@@ -367,13 +393,16 @@ impl Node {
                         .await;
                     debug!("start with feedback");
                 },
-            timeout
+                timeout,
-        ).await?;
+            )
+            .await?;
 
         if let Ok(res) = res.downcast() {
             Ok(*res)
         } else {
-            Err(SDLanError::ConvertError("failed to convert feedback to RSFeedback".to_owned()))
+            Err(SDLanError::ConvertError(
+                "failed to convert feedback to RSFeedback".to_owned(),
+            ))
         }
     }
 
@@ -394,6 +423,7 @@ impl Node {
         pubkey: String,
         config: NodeConfig,
         sock: Socket,
+        iface: &Option<Interface>,
         multicast_sock: Option<Socket>,
         // tcpsock: TCPSocket,
         // token: &str,
@@ -416,14 +446,12 @@ impl Node {
         };
 
         Self {
-
             #[cfg(any(feature = "tun", target_os = "windows"))]
             arp_table: ArpTable::new(),
 
             packet_id: AtomicU32::new(1),
             encryptor: ArcSwap::from(Arc::new(MyEncryptor::new())),
             // encryptor: RwLock::new(MyEncryptor::new()),
-
             network_id: AtomicU32::new(0),
             hostname: RwLock::new(hostname),
 
@@ -437,7 +465,7 @@ impl Node {
             udp_sock_for_global_dns: udp_sock_for_global_dns,
             dns_matcher: Arc::new(DNSMatcher::new()),
 
-            quic_endpoint: quic_init(),
+            quic_endpoint: quic_init(iface),
 
             identity_id: IdentityID::new(0),
             access_token: StringToken::new(String::new()),
@@ -445,7 +473,6 @@ impl Node {
 
             // _token: Mutex::new(token.to_owned()),
             // network_code: Mutex::new(network_code.to_owned()),
-
             start_stop_sender: start_stop,
             connection_chan: connecting_chan,
 
@@ -568,7 +595,7 @@ impl Node {
     }
     */
 
-    pub async fn send_arp_request(&self, gw_ip: u32, real_ip: u32) -> Result<()>{
+    pub async fn send_arp_request(&self, gw_ip: u32, real_ip: u32) -> Result<()> {
         let arp_request = SdlArpRequest {
             // pkt_id: id,
             target_ip: gw_ip,
@@ -666,12 +693,24 @@ impl Node {
             step: 0,
         };
 
-        let result = self.cookie_match.send_message_to_udp_and_wait_for(&self.udp_sock_v4, cookie, probe, PacketType::StunProbe as u8, to_server, Duration::from_secs(3)).await?;
+        let result = self
+            .cookie_match
+            .send_message_to_udp_and_wait_for(
+                &self.udp_sock_v4,
+                cookie,
+                probe,
+                PacketType::StunProbe as u8,
+                to_server,
+                Duration::from_secs(3),
+            )
+            .await?;
 
         if let Ok(res) = result.downcast() {
             return Ok(*res);
         }
-        return Err(SDLanError::ConvertError("failed to convert to StunprobeReply".to_owned()))
+        return Err(SDLanError::ConvertError(
+            "failed to convert to StunprobeReply".to_owned(),
+        ));
         // println!("==> sending probe request: {:?}", probe);
     }
 }
@@ -877,7 +916,15 @@ impl Queryer {
         }
     }
 
-    pub async fn send_message_to_udp_and_wait_for<T: Message>(&self, sock: &Socket, id: u32, message: T, packet_type: u8, to_server: &SocketAddr, timeout: Duration) -> Result<BoxedProstMessage> {
+    pub async fn send_message_to_udp_and_wait_for<T: Message>(
+        &self,
+        sock: &Socket,
+        id: u32,
+        message: T,
+        packet_type: u8,
+        to_server: &SocketAddr,
+        timeout: Duration,
+    ) -> Result<BoxedProstMessage> {
         let (tx, rx) = tokio::sync::oneshot::channel();
         self.mailbox.insert(id, tx);
 
@@ -903,10 +950,14 @@ impl Queryer {
                 Err(SDLanError::IOError("timed out".to_string()))
             }
         }
-
     }
 
-    pub async fn do_action_and_wait_for<T, F>(&self, id: u32, action: T, timeout: Duration) -> Result<BoxedProstMessage> 
+    pub async fn do_action_and_wait_for<T, F>(
+        &self,
+        id: u32,
+        action: T,
+        timeout: Duration,
+    ) -> Result<BoxedProstMessage>
     where
         F: Future<Output = ()>,
         T: Fn() -> F,
@@ -933,7 +984,13 @@ impl Queryer {
         }
     }
 
-    pub async fn send_message_to_quic_and_wait_for<T: Message>(&self, id: u32, message: T, packet_type: u8, timeout: Duration) -> Result<BoxedProstMessage> {
+    pub async fn send_message_to_quic_and_wait_for<T: Message>(
+        &self,
+        id: u32,
+        message: T,
+        packet_type: u8,
+        timeout: Duration,
+    ) -> Result<BoxedProstMessage> {
         let (tx, rx) = tokio::sync::oneshot::channel();
         self.mailbox.insert(id, tx);
 

src/quic/mod.rs

@@ -1,19 +1,30 @@
 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;
 
-use quinn::Endpoint;
+use default_net::Interface;
 use quinn::crypto::rustls::QuicClientConfig;
-use rustls::crypto::CryptoProvider;
+use quinn::Endpoint;
+use quinn::TokioRuntime;
 use rustls::crypto::ring;
+use rustls::crypto::CryptoProvider;
 use rustls::pki_types::CertificateDer;
 use rustls::pki_types::PrivateKeyDer;
 
 use rustls::pki_types::ServerName;
 use rustls_pemfile::{certs, private_key};
+use socket2::Domain;
+use socket2::Protocol;
 
-pub fn quic_init() -> Endpoint {
+use crate::get_default_interface;
+use crate::set_unicast_if_v4;
+
+pub fn quic_init(iface: &Option<Interface>) -> Endpoint {
     let default_provider = ring::default_provider();
     CryptoProvider::install_default(default_provider).unwrap();
 
@@ -26,7 +37,10 @@ pub fn quic_init() -> Endpoint {
     */
 
     let mut root_store = rustls::RootCertStore::empty();
-    rustls_native_certs::load_native_certs().expect("could not load platform certs").into_iter().for_each(|cert| {
+    rustls_native_certs::load_native_certs()
+        .expect("could not load platform certs")
+        .into_iter()
+        .for_each(|cert| {
             root_store.add(cert).unwrap();
         });
 
@@ -43,11 +57,34 @@ pub fn quic_init() -> Endpoint {
         .with_no_client_auth();
     */
 
+    let socket2 =
+        socket2::Socket::new(Domain::IPV4, socket2::Type::DGRAM, Some(Protocol::UDP)).unwrap();
+    socket2
+        .bind(&"0.0.0.0:0".parse::<SocketAddr>().unwrap().into())
+        .unwrap();
+
+    if let Some(iface) = iface {
+        set_unicast_if_v4(&socket2, iface);
+    }
+
+    let std_socket = unsafe { UdpSocket::from_raw_socket(socket2.into_raw_socket()) };
+    std_socket.set_nonblocking(true);
+
     rustls_config.alpn_protocols = vec![b"punchnet/1.0".to_vec()];
 
-    let quinn_client_config = quinn::ClientConfig::new(Arc::new(QuicClientConfig::try_from(rustls_config).unwrap()));
+    let quinn_client_config =
+        quinn::ClientConfig::new(Arc::new(QuicClientConfig::try_from(rustls_config).unwrap()));
+
+    let quinn_endpoint_config = quinn::EndpointConfig::default();
+
+    let mut endpoint = Endpoint::new(
+        quinn_endpoint_config,
+        None,
+        std_socket,
+        Arc::new(TokioRuntime),
+    )
+    .unwrap();
 
-    let mut endpoint = Endpoint::client("0.0.0.0:0".parse().unwrap()).unwrap();
     endpoint.set_default_client_config(quinn_client_config);
 
     endpoint
@@ -56,21 +93,42 @@ pub fn quic_init() -> Endpoint {
 #[derive(Debug)]
 struct SkipServerVerification;
 impl rustls::client::danger::ServerCertVerifier for SkipServerVerification {
-    fn verify_server_cert(&self, _: &CertificateDer<'_>, _: &[CertificateDer<'_>], _: &ServerName<'_>, _: &[u8], _: rustls::pki_types::UnixTime) -> Result<rustls::client::danger::ServerCertVerified, rustls::Error> {
+    fn verify_server_cert(
+        &self,
+        _: &CertificateDer<'_>,
+        _: &[CertificateDer<'_>],
+        _: &ServerName<'_>,
+        _: &[u8],
+        _: rustls::pki_types::UnixTime,
+    ) -> Result<rustls::client::danger::ServerCertVerified, rustls::Error> {
         Ok(rustls::client::danger::ServerCertVerified::assertion())
     }
-    fn verify_tls12_signature(&self, _: &[u8], _: &CertificateDer<'_>, _: &rustls::DigitallySignedStruct) -> Result<rustls::client::danger::HandshakeSignatureValid, rustls::Error> {
+    fn verify_tls12_signature(
+        &self,
+        _: &[u8],
+        _: &CertificateDer<'_>,
+        _: &rustls::DigitallySignedStruct,
+    ) -> Result<rustls::client::danger::HandshakeSignatureValid, rustls::Error> {
         Ok(rustls::client::danger::HandshakeSignatureValid::assertion())
     }
-    fn verify_tls13_signature(&self, _: &[u8], _: &CertificateDer<'_>, _: &rustls::DigitallySignedStruct) -> Result<rustls::client::danger::HandshakeSignatureValid, rustls::Error> {
+    fn verify_tls13_signature(
+        &self,
+        _: &[u8],
+        _: &CertificateDer<'_>,
+        _: &rustls::DigitallySignedStruct,
+    ) -> Result<rustls::client::danger::HandshakeSignatureValid, rustls::Error> {
         Ok(rustls::client::danger::HandshakeSignatureValid::assertion())
     }
     fn supported_verify_schemes(&self) -> Vec<rustls::SignatureScheme> {
-        rustls::crypto::ring::default_provider().signature_verification_algorithms.supported_schemes()
+        rustls::crypto::ring::default_provider()
+            .signature_verification_algorithms
+            .supported_schemes()
     }
 }
 
-pub fn load_certs_from_pem(path: impl AsRef<Path>) -> Result<Vec<CertificateDer<'static>>, Box<dyn std::error::Error>> {
+pub fn load_certs_from_pem(
+    path: impl AsRef<Path>,
+) -> Result<Vec<CertificateDer<'static>>, Box<dyn std::error::Error>> {
     let file = File::open(path.as_ref())?;
     let mut reader = BufReader::new(file);
     let certs = certs(&mut reader)
@@ -81,7 +139,7 @@ pub fn load_certs_from_pem(path: impl AsRef<Path>) -> Result<Vec<CertificateDer<
     Ok(certs)
 }
 
-pub fn load_private_key_from_pem(path: impl AsRef<Path>) -> Option<PrivateKeyDer<'static>>{
+pub fn load_private_key_from_pem(path: impl AsRef<Path>) -> Option<PrivateKeyDer<'static>> {
     let Ok(file) = File::open(path.as_ref()) else {
         return None;
     };

src/utils/socks.rs

@@ -1,8 +1,10 @@
+use default_net::Interface;
 use sdlan_sn_rs::{
     config::{AF_INET, AF_INET6},
     utils::{Result, SDLanError},
 };
-use std::net::{IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr};
+use socket2::{Domain, Protocol, SockAddr};
+use std::net::{IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4};
 use tokio::net::ToSocketAddrs;
 use tracing::{debug, error};
 
@@ -61,13 +63,34 @@ impl Socket {
         Ok(Self { udp })
     }
 
-    pub async fn build(port: u16, bind_any: bool, join_multicast: bool, tos: u32) -> Result<Self> {
+    pub async fn build(
+        port: u16,
+        bind_any: bool,
+        join_multicast: bool,
+        tos: u32,
+        default_interface: &Option<Interface>,
+    ) -> Result<Self> {
         let addr = match bind_any {
             true => "0.0.0.0",
             false => "127.0.0.1",
         };
         let addr = format!("{}:{}", addr, port);
-        let udp = UdpSocket::bind(&addr).await?;
+
+        let socket2 =
+            socket2::Socket::new(Domain::IPV4, socket2::Type::DGRAM, Some(Protocol::UDP))?;
+
+        socket2.bind(&addr.parse::<SocketAddr>()?.into());
+
+        if let Some(iface) = default_interface {
+            set_unicast_if_v4(&socket2, iface);
+        }
+
+        let std_socket: std::net::UdpSocket = socket2.into();
+        std_socket.set_nonblocking(true);
+
+        let udp = UdpSocket::from_std(std_socket)?;
+
+        // let udp = UdpSocket::bind(&addr).await?;
         if join_multicast {
             if let Err(e) =
                 udp.join_multicast_v4(Ipv4Addr::new(224, 0, 0, 69), Ipv4Addr::new(0, 0, 0, 0))
@@ -86,6 +109,29 @@ impl Socket {
     }
 }
 
+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};
+
+    let idx = interface.index.to_be();
+    let ret = unsafe {
+        setsockopt(
+            sock.as_raw_socket() as SOCKET,
+            IPPROTO_IP as i32,
+            IP_UNICAST_IF as i32,
+            &idx as *const _ as *const _,
+            std::mem::size_of_val(&idx) as i32,
+        )
+    };
+    if ret == 0 {
+        Ok(())
+    } else {
+        Err(SDLanError::IOError(
+            std::io::Error::last_os_error().to_string(),
+        ))
+    }
+}
+
 /*
 pub async fn send_to_sock_v4_and_v6(
     // sk: &Socket,

src/utils/system_action.rs

@@ -1,6 +1,8 @@
 use std::{net::Ipv4Addr, sync::Arc};
 
 use arc_swap::ArcSwap;
+use default_net::Interface;
+use sdlan_sn_rs::utils::{Result, SDLanError};
 
 #[derive(Default, Clone)]
 pub struct TrieNode {
@@ -63,6 +65,13 @@ impl IpTrie {
     }
 }
 
+pub fn get_default_interface() -> Result<Interface> {
+    match default_net::get_default_interface() {
+        Ok(interface) => Ok(interface),
+        Err(e) => Err(SDLanError::IOError(e)),
+    }
+}
+
 #[cfg(test)]
 mod test {
     use std::net::Ipv4Addr;