From 150d1c8e67dc4c6d428fdfacac041dace05eeb0c Mon Sep 17 00:00:00 2001
From: alex <asxalex@163.com>
Date: Mon, 13 Apr 2026 19:32:39 +0800
Subject: [PATCH] fix windows's read tun, fill first 14 bytes with 0's

---
 .vscode/settings.json     |  2 +-
 src/lib.rs                |  3 +++
 src/network/async_main.rs |  6 +++---
 src/network/tun_linux.rs  | 17 ++---------------
 4 files changed, 9 insertions(+), 19 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/src/lib.rs b/src/lib.rs
index a0dcadd..1cc6e88 100755
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -30,6 +30,9 @@ use sdlan_sn_rs::{
     utils::{create_or_load_uuid, get_sdlan_sock_from_socketaddr, Result, SDLanError},
 };
 
+#[cfg(all(feature = "tun", target_os = "windows"))]
+compile_error!("tun feature is not supported on windows");
+
 
 #[derive(Clone)]
 pub enum ConnectionInfo {
diff --git a/src/network/async_main.rs b/src/network/async_main.rs
index d8e1ee2..aefdab9 100755
--- a/src/network/async_main.rs
+++ b/src/network/async_main.rs
@@ -255,7 +255,7 @@ async fn loop_tap(eee: &'static Node, cancel: CancellationToken) {
     error!("loop_tap exited");
 }
 
-#[cfg(feature = "tun")]
+#[cfg(any(feature = "tun", target_os = "windows"))]
 fn get_data_from_tun_with_layer2_zeroed(eee: &Node) -> BytesMut {
     let mut temp = BytesMut::zeroed(1514);
     // let mut temp = BytesMut::with_capacity(1514);
@@ -282,9 +282,9 @@ fn get_data_from_tap_with_layer2(eee: &Node) -> BytesMut {
 async fn get_tun_flow(eee: &'static Node, tx: Sender<BytesMut>) {
     loop {
         let buf = tokio::task::spawn_blocking(|| {
-            #[cfg(feature = "tun")]
+            #[cfg(any(feature = "tun", target_os = "windows"))]
             let data = get_data_from_tun_with_layer2_zeroed(eee);
-            #[cfg(not(feature = "tun"))]
+            #[cfg(all(not(feature = "tun"), not(target_os="windows")))]
             let data = get_data_from_tap_with_layer2(eee);
 
             data
diff --git a/src/network/tun_linux.rs b/src/network/tun_linux.rs
index 7d33de8..84d6e1b 100755
--- a/src/network/tun_linux.rs
+++ b/src/network/tun_linux.rs
@@ -328,7 +328,7 @@ impl TunTapPacketHandler for Iface {
 
                             if u32::from_be_bytes(ipv4.destination) == DNS_IP {
                                 // should send to dns
-                                parse_dns_payload(edge, &headers.payload);
+                                parse_dns_payload(edge, &headers.payload.slice());
                                 if let Err(e) = edge.udp_sock_for_dns.send_to(&data[14..], format!("{}:15353", edge.server_ip)).await {
                                     error!("failed to send request to 15353: {}", e);
                                 }
@@ -1029,18 +1029,5 @@ pub async fn arp_reply_arrived(edge: &Node, data: SdlArpResponse) {
     }
 }
 
-/*
 fn parse_dns_payload(edge: &Node, payload: &[u8]) {
-    match dns_parse::parse(Bytes::from(payload)) {
-        Ok(packet) => {
-            packet[0].
-            if let Some(questions) = packet.questions.first() {
-                debug!("got dns query for {:?}", questions.qname);
-            }
-        }
-        Err(e) => {
-            error!("failed to parse dns packet: {}", e.to_string());
-        }
-    }
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file