diff --git a/vnt/src/channel/tcp_channel.rs b/vnt/src/channel/tcp_channel.rs
index 07dbde4..c5a0219 100644
--- a/vnt/src/channel/tcp_channel.rs
+++ b/vnt/src/channel/tcp_channel.rs
@@ -31,7 +31,7 @@ pub fn tcp_listen<H>(
     stop_manager: StopManager,
     recv_handler: H,
     context: ChannelContext,
-) -> io::Result<AcceptSocketSender<(TcpStream, SocketAddr, Option<Vec<u8>>)>>
+) -> anyhow::Result<AcceptSocketSender<(TcpStream, SocketAddr, Option<Vec<u8>>)>>
 where
     H: RecvChannelHandler,
 {
@@ -75,7 +75,7 @@ fn tcp_listen0<H>(
     accept_tcp_receiver: Receiver<(TcpStream, SocketAddr, Option<Vec<u8>>)>,
     mut recv_handler: H,
     context: ChannelContext,
-) -> io::Result<()>
+) -> anyhow::Result<()>
 where
     H: RecvChannelHandler,
 {
@@ -109,7 +109,7 @@ where
                             if e.kind() == io::ErrorKind::WouldBlock {
                                 break;
                             }
-                            return Err(e);
+                            return Err(e)?;
                         }
                     }
                 },
@@ -164,7 +164,7 @@ fn init_writable_handler(
     receiver: Receiver<(TcpStream, Token, SocketAddr, Option<Vec<u8>>)>,
     stop_manager: StopManager,
     context: ChannelContext,
-) -> io::Result<WritableNotify> {
+) -> anyhow::Result<WritableNotify> {
     let poll = Poll::new()?;
     let writable_notify = WritableNotify::new(Waker::new(poll.registry(), NOTIFY)?);
     let worker = {
diff --git a/vnt/src/channel/udp_channel.rs b/vnt/src/channel/udp_channel.rs
index b5adbd7..4a0a26a 100644
--- a/vnt/src/channel/udp_channel.rs
+++ b/vnt/src/channel/udp_channel.rs
@@ -17,7 +17,7 @@ pub fn udp_listen<H>(
     stop_manager: StopManager,
     recv_handler: H,
     context: ChannelContext,
-) -> io::Result<AcceptSocketSender<Option<Vec<UdpSocket>>>>
+) -> anyhow::Result<AcceptSocketSender<Option<Vec<UdpSocket>>>>
 where
     H: RecvChannelHandler,
 {
@@ -31,7 +31,7 @@ fn sub_udp_listen<H>(
     stop_manager: StopManager,
     recv_handler: H,
     context: ChannelContext,
-) -> io::Result<AcceptSocketSender<Option<Vec<UdpSocket>>>>
+) -> anyhow::Result<AcceptSocketSender<Option<Vec<UdpSocket>>>>
 where
     H: RecvChannelHandler,
 {
@@ -208,7 +208,7 @@ fn main_udp_listen<H>(
     stop_manager: StopManager,
     recv_handler: H,
     context: ChannelContext,
-) -> io::Result<()>
+) -> anyhow::Result<()>
 where
     H: RecvChannelHandler,
 {
diff --git a/vnt/src/handle/maintain/heartbeat.rs b/vnt/src/handle/maintain/heartbeat.rs
index d9ce1dc..e5b4a94 100644
--- a/vnt/src/handle/maintain/heartbeat.rs
+++ b/vnt/src/handle/maintain/heartbeat.rs
@@ -1,4 +1,3 @@
-use std::io;
 use std::net::Ipv4Addr;
 use std::sync::Arc;
 use std::time::Duration;
@@ -167,7 +166,7 @@ fn client_relay0(
     current_device: &CurrentDeviceInfo,
     device_list: &Mutex<(u16, Vec<PeerDeviceInfo>)>,
     client_cipher: &Cipher,
-) -> io::Result<()> {
+) -> anyhow::Result<()> {
     // 离线了不再探测
     if current_device.status.offline() {
         return Ok(());
@@ -211,7 +210,7 @@ fn client_relay0(
 fn heartbeat_packet(
     src: Ipv4Addr,
     dest: Ipv4Addr,
-) -> io::Result<NetPacket<[u8; 12 + 4 + ENCRYPTION_RESERVED]>> {
+) -> anyhow::Result<NetPacket<[u8; 12 + 4 + ENCRYPTION_RESERVED]>> {
     let mut net_packet = NetPacket::new_encrypt([0u8; 12 + 4 + ENCRYPTION_RESERVED])?;
     net_packet.set_default_version();
     net_packet.set_protocol(Protocol::Control);
@@ -228,7 +227,7 @@ fn heartbeat_packet_client(
     client_cipher: &Cipher,
     src: Ipv4Addr,
     dest: Ipv4Addr,
-) -> io::Result<NetPacket<[u8; 12 + 4 + ENCRYPTION_RESERVED]>> {
+) -> anyhow::Result<NetPacket<[u8; 12 + 4 + ENCRYPTION_RESERVED]>> {
     let mut net_packet = heartbeat_packet(src, dest)?;
     client_cipher.encrypt_ipv4(&mut net_packet)?;
     Ok(net_packet)
@@ -239,7 +238,7 @@ fn heartbeat_packet_server(
     server_cipher: &Cipher,
     src: Ipv4Addr,
     dest: Ipv4Addr,
-) -> io::Result<NetPacket<[u8; 12 + 4 + ENCRYPTION_RESERVED]>> {
+) -> anyhow::Result<NetPacket<[u8; 12 + 4 + ENCRYPTION_RESERVED]>> {
     let mut net_packet = heartbeat_packet(src, dest)?;
     let mut ping = PingPacket::new(net_packet.payload_mut())?;
     ping.set_epoch(device_list.lock().0);
diff --git a/vnt/src/handle/maintain/punch.rs b/vnt/src/handle/maintain/punch.rs
index 8c7c226..8c00f45 100644
--- a/vnt/src/handle/maintain/punch.rs
+++ b/vnt/src/handle/maintain/punch.rs
@@ -2,9 +2,10 @@ use std::collections::HashMap;
 use std::net::Ipv4Addr;
 use std::sync::mpsc::{sync_channel, Receiver, SyncSender};
 use std::sync::Arc;
+use std::thread;
 use std::time::Duration;
-use std::{io, thread};
 
+use anyhow::anyhow;
 use crossbeam_utils::atomic::AtomicCell;
 use parking_lot::Mutex;
 use protobuf::Message;
@@ -222,7 +223,7 @@ fn punch0(
     punch_record: &Mutex<HashMap<Ipv4Addr, usize>>,
     last_punch_record: &mut HashMap<Ipv4Addr, usize>,
     total_count: usize,
-) -> io::Result<()> {
+) -> anyhow::Result<()> {
     let nat_info = nat_test.nat_info();
     if total_count < 10
         && (nat_info.public_ips.is_empty()
@@ -297,7 +298,7 @@ fn punch_packet(
     virtual_ip: Ipv4Addr,
     nat_info: &NatInfo,
     dest: Ipv4Addr,
-) -> io::Result<NetPacket<Vec<u8>>> {
+) -> anyhow::Result<NetPacket<Vec<u8>>> {
     let mut punch_reply = PunchInfo::new();
     punch_reply.reply = false;
     punch_reply.public_ip_list = nat_info
@@ -320,7 +321,7 @@ fn punch_packet(
     log::info!("请求打洞={:?}", punch_reply);
     let bytes = punch_reply
         .write_to_bytes()
-        .map_err(|e| io::Error::new(io::ErrorKind::Other, format!("punch_packet {:?}", e)))?;
+        .map_err(|e| anyhow!("punch_packet {:?}", e))?;
     let mut net_packet = NetPacket::new_encrypt(vec![0u8; 12 + bytes.len() + ENCRYPTION_RESERVED])?;
     net_packet.set_default_version();
     net_packet.set_protocol(Protocol::OtherTurn);
diff --git a/vnt/src/handle/recv_data/client.rs b/vnt/src/handle/recv_data/client.rs
index 70e8f99..5d619d6 100644
--- a/vnt/src/handle/recv_data/client.rs
+++ b/vnt/src/handle/recv_data/client.rs
@@ -1,13 +1,16 @@
-use parking_lot::RwLock;
-use protobuf::Message;
+use anyhow::anyhow;
 use std::collections::HashMap;
-use std::io;
 use std::net::{Ipv4Addr, Ipv6Addr};
 use std::sync::Arc;
 
+use parking_lot::RwLock;
+use protobuf::Message;
+
 use packet::icmp::{icmp, Kind};
 use packet::ip::ipv4;
 use packet::ip::ipv4::packet::IpV4Packet;
+#[cfg(any(target_os = "windows", target_os = "linux", target_os = "macos"))]
+use tun::device::IFace;
 
 use crate::channel::context::ChannelContext;
 use crate::channel::punch::NatInfo;
@@ -28,8 +31,6 @@ use crate::protocol::{
     control_packet, ip_turn_packet, other_turn_packet, NetPacket, Protocol, MAX_TTL,
 };
 use crate::tun_tap_device::tun_create_helper::DeviceAdapter;
-#[cfg(any(target_os = "windows", target_os = "linux", target_os = "macos"))]
-use tun::device::IFace;
 
 /// 处理来源于客户端的包
 #[derive(Clone)]
@@ -116,7 +117,7 @@ impl ClientPacketHandler {
         context: &ChannelContext,
         current_device: &CurrentDeviceInfo,
         route_key: RouteKey,
-    ) -> io::Result<()> {
+    ) -> anyhow::Result<()> {
         let destination = net_packet.destination();
         let source = net_packet.source();
         match ip_turn_packet::Protocol::from(net_packet.transport_protocol()) {
@@ -203,7 +204,7 @@ impl ClientPacketHandler {
         current_device: &CurrentDeviceInfo,
         mut net_packet: NetPacket<&mut [u8]>,
         route_key: RouteKey,
-    ) -> io::Result<()> {
+    ) -> anyhow::Result<()> {
         let metric = net_packet.source_ttl() - net_packet.ttl() + 1;
         let source = net_packet.source();
         match ControlPacket::new(net_packet.transport_protocol(), net_packet.payload())? {
@@ -291,17 +292,15 @@ impl ClientPacketHandler {
         current_device: &CurrentDeviceInfo,
         net_packet: NetPacket<&mut [u8]>,
         route_key: RouteKey,
-    ) -> io::Result<()> {
+    ) -> anyhow::Result<()> {
         if context.use_channel_type().is_only_relay() {
             return Ok(());
         }
         let source = net_packet.source();
         match other_turn_packet::Protocol::from(net_packet.transport_protocol()) {
             other_turn_packet::Protocol::Punch => {
-                let mut punch_info =
-                    PunchInfo::parse_from_bytes(net_packet.payload()).map_err(|e| {
-                        io::Error::new(io::ErrorKind::Other, format!("PunchInfo {:?}", e))
-                    })?;
+                let mut punch_info = PunchInfo::parse_from_bytes(net_packet.payload())
+                    .map_err(|e| anyhow!("PunchInfo {:?}", e))?;
                 let public_ips = punch_info
                     .public_ip_list
                     .iter()
@@ -361,9 +360,9 @@ impl ClientPacketHandler {
                         punch_reply.ipv6 = ipv6.octets().to_vec();
                         punch_reply.ipv6_port = nat_info.udp_ports[0] as u32;
                     }
-                    let bytes = punch_reply.write_to_bytes().map_err(|e| {
-                        io::Error::new(io::ErrorKind::Other, format!("punch_reply {:?}", e))
-                    })?;
+                    let bytes = punch_reply
+                        .write_to_bytes()
+                        .map_err(|e| anyhow!("punch_reply {:?}", e))?;
                     let mut punch_packet =
                         NetPacket::new_encrypt(vec![0u8; 12 + bytes.len() + ENCRYPTION_RESERVED])?;
                     punch_packet.set_default_version();
diff --git a/vnt/src/handle/recv_data/mod.rs b/vnt/src/handle/recv_data/mod.rs
index 8c2bdea..bb14c20 100644
--- a/vnt/src/handle/recv_data/mod.rs
+++ b/vnt/src/handle/recv_data/mod.rs
@@ -62,7 +62,12 @@ impl<Call: VntCallback> RecvChannelHandler for RecvDataHandler<Call> {
             }
         }
         if let Err(e) = self.handle0(buf, extend, route_key, context) {
-            log::error!("[{}]-{:?}", thread::current().name().unwrap_or(""), e);
+            log::error!(
+                "[{}]-{:?}-{:?}",
+                thread::current().name().unwrap_or(""),
+                route_key.addr,
+                e
+            );
         }
     }
 }
diff --git a/vnt/src/handle/recv_data/server.rs b/vnt/src/handle/recv_data/server.rs
index c42ec48..747e3be 100644
--- a/vnt/src/handle/recv_data/server.rs
+++ b/vnt/src/handle/recv_data/server.rs
@@ -1,3 +1,4 @@
+use anyhow::anyhow;
 use std::io;
 use std::net::Ipv4Addr;
 use std::sync::Arc;
@@ -11,6 +12,8 @@ use protobuf::Message;
 use packet::icmp::{icmp, Kind};
 use packet::ip::ipv4;
 use packet::ip::ipv4::packet::IpV4Packet;
+#[cfg(any(target_os = "windows", target_os = "linux", target_os = "macos"))]
+use tun::device::IFace;
 
 use crate::channel::context::ChannelContext;
 use crate::channel::{Route, RouteKey};
@@ -34,8 +37,6 @@ use crate::protocol::error_packet::InErrorPacket;
 use crate::protocol::{ip_turn_packet, service_packet, NetPacket, Protocol, MAX_TTL};
 use crate::tun_tap_device::tun_create_helper::DeviceAdapter;
 use crate::{proto, PeerClientInfo};
-#[cfg(any(target_os = "windows", target_os = "linux", target_os = "macos"))]
-use tun::device::IFace;
 
 /// 处理来源于服务端的包
 #[derive(Clone)]
@@ -136,10 +137,8 @@ impl<Call: VntCallback> PacketHandler for ServerPacketHandler<Call> {
         } else if net_packet.protocol() == Protocol::Service
             && net_packet.transport_protocol() == service_packet::Protocol::HandshakeResponse.into()
         {
-            let response =
-                HandshakeResponse::parse_from_bytes(net_packet.payload()).map_err(|e| {
-                    io::Error::new(io::ErrorKind::Other, format!("HandshakeResponse {:?}", e))
-                })?;
+            let response = HandshakeResponse::parse_from_bytes(net_packet.payload())
+                .map_err(|e| anyhow!("HandshakeResponse {:?}", e))?;
             log::info!("握手响应:{:?},{}", route_key, response);
             //如果开启了加密，则发送加密握手请求
             #[cfg(feature = "server_encrypt")]
@@ -254,7 +253,7 @@ impl<Call: VntCallback> ServerPacketHandler<Call> {
         current_device: &CurrentDeviceInfo,
         net_packet: NetPacket<&mut [u8]>,
         route_key: RouteKey,
-    ) -> io::Result<()> {
+    ) -> anyhow::Result<()> {
         match service_packet::Protocol::from(net_packet.transport_protocol()) {
             service_packet::Protocol::RegistrationResponse => {
                 let response = RegistrationResponse::parse_from_bytes(net_packet.payload())
@@ -440,7 +439,7 @@ impl<Call: VntCallback> ServerPacketHandler<Call> {
         &self,
         current_device: &CurrentDeviceInfo,
         context: &ChannelContext,
-    ) -> io::Result<()> {
+    ) -> anyhow::Result<()> {
         if current_device.status.online() {
             log::info!("已连接的不需要注册，{:?}", self.config_info);
             return Ok(());
@@ -469,7 +468,8 @@ impl<Call: VntCallback> ServerPacketHandler<Call> {
         )?;
         log::info!("发送注册请求，{:?}", self.config_info);
         //注册请求只发送到默认通道
-        context.send_default(response.buffer(), current_device.connect_server)
+        context.send_default(response.buffer(), current_device.connect_server)?;
+        Ok(())
     }
     fn error(
         &self,
@@ -527,7 +527,7 @@ impl<Call: VntCallback> ServerPacketHandler<Call> {
         current_device: &CurrentDeviceInfo,
         net_packet: NetPacket<&mut [u8]>,
         route_key: RouteKey,
-    ) -> io::Result<()> {
+    ) -> anyhow::Result<()> {
         match ControlPacket::new(net_packet.transport_protocol(), net_packet.payload())? {
             ControlPacket::PongPacket(pong_packet) => {
                 let current_time = crate::handle::now_time() as u16;
diff --git a/vnt/src/handle/registrar.rs b/vnt/src/handle/registrar.rs
index 160850d..417fea5 100644
--- a/vnt/src/handle/registrar.rs
+++ b/vnt/src/handle/registrar.rs
@@ -1,4 +1,4 @@
-use std::io;
+use anyhow::anyhow;
 use std::net::Ipv4Addr;
 
 use protobuf::Message;
@@ -19,7 +19,7 @@ pub fn registration_request_packet(
     is_fast: bool,
     allow_ip_change: bool,
     client_secret_hash: Option<&[u8]>,
-) -> io::Result<NetPacket<Vec<u8>>> {
+) -> anyhow::Result<NetPacket<Vec<u8>>> {
     let mut request = RegistrationRequest::new();
     request.token = token;
     request.device_id = device_id;
@@ -36,9 +36,9 @@ pub fn registration_request_packet(
             .client_secret_hash
             .extend_from_slice(client_secret_hash);
     }
-    let bytes = request.write_to_bytes().map_err(|e| {
-        io::Error::new(io::ErrorKind::Other, format!("RegistrationRequest {:?}", e))
-    })?;
+    let bytes = request
+        .write_to_bytes()
+        .map_err(|e| anyhow!("RegistrationRequest {:?}", e))?;
     let buf = vec![0u8; 12 + bytes.len() + ENCRYPTION_RESERVED];
     let mut net_packet = NetPacket::new_encrypt(buf)?;
     net_packet.set_destination(GATEWAY_IP);
diff --git a/vnt/src/handle/tun_tap/tun_handler.rs b/vnt/src/handle/tun_tap/tun_handler.rs
index f5217be..4d94d86 100644
--- a/vnt/src/handle/tun_tap/tun_handler.rs
+++ b/vnt/src/handle/tun_tap/tun_handler.rs
@@ -5,7 +5,6 @@ use std::{io, thread};
 use crossbeam_utils::atomic::AtomicCell;
 use parking_lot::Mutex;
 
-use crate::channel::BUFFER_SIZE;
 use packet::icmp::icmp::IcmpPacket;
 use packet::icmp::Kind;
 use packet::ip::ipv4::packet::IpV4Packet;
@@ -14,6 +13,7 @@ use tun::device::IFace;
 use tun::Device;
 
 use crate::channel::context::ChannelContext;
+use crate::channel::BUFFER_SIZE;
 use crate::cipher::Cipher;
 use crate::compression::Compressor;
 use crate::external_route::ExternalRoute;
@@ -187,7 +187,7 @@ fn broadcast(
     net_packet: &mut NetPacket<&mut [u8]>,
     current_device: &CurrentDeviceInfo,
     device_list: &Mutex<(u16, Vec<PeerDeviceInfo>)>,
-) -> io::Result<()> {
+) -> anyhow::Result<()> {
     let list: Vec<Ipv4Addr> = device_list
         .lock()
         .1
@@ -261,7 +261,8 @@ fn broadcast(
     broadcast.set_address(&p2p_ips)?;
     broadcast.set_data(net_packet.buffer())?;
     server_cipher.encrypt_ipv4(&mut server_packet)?;
-    sender.send_default(server_packet.buffer(), current_device.connect_server)
+    sender.send_default(server_packet.buffer(), current_device.connect_server)?;
+    Ok(())
 }
 
 /// 实现一个原地发送，必须保证是如下结构
@@ -302,6 +303,38 @@ fn base_handle(
         }
         return Ok(());
     }
+    if !dest_ip.is_multicast() && !dest_ip.is_broadcast() && current_device.broadcast_ip != dest_ip
+    {
+        if !check_dest(
+            dest_ip,
+            current_device.virtual_netmask,
+            current_device.virtual_network,
+        ) {
+            if let Some(r_dest_ip) = ip_route.route(&dest_ip) {
+                //路由的目标不能是自己
+                if r_dest_ip == src_ip {
+                    return Ok(());
+                }
+                //需要修改目的地址
+                dest_ip = r_dest_ip;
+                net_packet.set_destination(r_dest_ip);
+            } else {
+                return Ok(());
+            }
+        }
+        #[cfg(feature = "ip_proxy")]
+        if let Some(proxy_map) = proxy_map {
+            let mut ipv4_packet = IpV4Packet::new(net_packet.payload_mut())?;
+            proxy_map.send_handle(&mut ipv4_packet)?;
+        }
+    }
+
+    if dest_ip.is_multicast() {
+        //当作广播处理
+        dest_ip = Ipv4Addr::BROADCAST;
+        net_packet.set_destination(Ipv4Addr::BROADCAST);
+    }
+
     let mut net_packet = if compressor.compress(&net_packet, &mut out)? {
         out.set_default_version();
         out.set_protocol(protocol::Protocol::IpTurn);
@@ -313,11 +346,6 @@ fn base_handle(
     } else {
         net_packet
     };
-    if dest_ip.is_multicast() {
-        //当作广播处理
-        dest_ip = Ipv4Addr::BROADCAST;
-        net_packet.set_destination(Ipv4Addr::BROADCAST);
-    }
     if dest_ip.is_broadcast() || current_device.broadcast_ip == dest_ip {
         // 广播 发送到直连目标
         client_cipher.encrypt_ipv4(&mut net_packet)?;
@@ -330,28 +358,7 @@ fn base_handle(
         )?;
         return Ok(());
     }
-    if !check_dest(
-        dest_ip,
-        current_device.virtual_netmask,
-        current_device.virtual_network,
-    ) {
-        if let Some(r_dest_ip) = ip_route.route(&dest_ip) {
-            //路由的目标不能是自己
-            if r_dest_ip == src_ip {
-                return Ok(());
-            }
-            //需要修改目的地址
-            dest_ip = r_dest_ip;
-            net_packet.set_destination(r_dest_ip);
-        } else {
-            return Ok(());
-        }
-    }
-    #[cfg(feature = "ip_proxy")]
-    if let Some(proxy_map) = proxy_map {
-        let mut ipv4_packet = IpV4Packet::new(net_packet.payload_mut())?;
-        proxy_map.send_handle(&mut ipv4_packet)?;
-    }
+
     client_cipher.encrypt_ipv4(&mut net_packet)?;
     context.send_ipv4_by_id(
         net_packet.buffer(),
diff --git a/vnt/src/handle/tun_tap/unix.rs b/vnt/src/handle/tun_tap/unix.rs
index 09b0d4e..c49323a 100644
--- a/vnt/src/handle/tun_tap/unix.rs
+++ b/vnt/src/handle/tun_tap/unix.rs
@@ -33,7 +33,7 @@ pub(crate) fn start_simple(
     up_counter: &mut SingleU64Adder,
     device_list: Arc<Mutex<(u16, Vec<PeerDeviceInfo>)>>,
     compressor: Compressor,
-) -> io::Result<()> {
+) -> anyhow::Result<()> {
     let poll = Poll::new()?;
     let waker = Arc::new(Waker::new(poll.registry(), STOP)?);
     let _waker = waker.clone();
@@ -73,7 +73,7 @@ fn start_simple0(
     up_counter: &mut SingleU64Adder,
     device_list: Arc<Mutex<(u16, Vec<PeerDeviceInfo>)>>,
     compressor: Compressor,
-) -> io::Result<()> {
+) -> anyhow::Result<()> {
     let mut buf = [0; BUFFER_SIZE];
     let mut extend = [0; BUFFER_SIZE];
     let fd = device.as_tun_fd();
@@ -134,7 +134,7 @@ pub(crate) fn start_multi(
     device: Arc<Device>,
     group_sync_sender: GroupSyncSender<(Vec<u8>, usize)>,
     up_counter: &mut SingleU64Adder,
-) -> io::Result<()> {
+) -> anyhow::Result<()> {
     let poll = Poll::new()?;
     let waker = Arc::new(Waker::new(poll.registry(), STOP)?);
     let _waker = waker.clone();
@@ -154,7 +154,7 @@ fn start_multi0(
     device: Arc<Device>,
     mut group_sync_sender: GroupSyncSender<(Vec<u8>, usize)>,
     up_counter: &mut SingleU64Adder,
-) -> io::Result<()> {
+) -> anyhow::Result<()> {
     let fd = device.as_tun_fd();
     fd.set_nonblock()?;
     SourceFd(&fd.as_raw_fd()).register(poll.registry(), FD, Interest::READABLE)?;
diff --git a/vnt/src/handle/tun_tap/windows.rs b/vnt/src/handle/tun_tap/windows.rs
index f1c86c7..0d03b1e 100644
--- a/vnt/src/handle/tun_tap/windows.rs
+++ b/vnt/src/handle/tun_tap/windows.rs
@@ -10,7 +10,6 @@ use crate::ip_proxy::IpProxyMap;
 use crate::util::{SingleU64Adder, StopManager};
 use crossbeam_utils::atomic::AtomicCell;
 use parking_lot::Mutex;
-use std::io;
 use std::sync::Arc;
 use tun::device::IFace;
 use tun::Device;
@@ -27,7 +26,7 @@ pub(crate) fn start_simple(
     up_counter: &mut SingleU64Adder,
     device_list: Arc<Mutex<(u16, Vec<PeerDeviceInfo>)>>,
     compressor: Compressor,
-) -> io::Result<()> {
+) -> anyhow::Result<()> {
     let worker = {
         let device = device.clone();
         stop_manager.add_listener("tun_device".into(), move || {
@@ -65,7 +64,7 @@ fn start_simple0(
     up_counter: &mut SingleU64Adder,
     device_list: Arc<Mutex<(u16, Vec<PeerDeviceInfo>)>>,
     compressor: Compressor,
-) -> io::Result<()> {
+) -> anyhow::Result<()> {
     let mut buf = [0; BUFFER_SIZE];
     let mut extend = [0; BUFFER_SIZE];
     loop {
@@ -101,7 +100,7 @@ pub(crate) fn start_multi(
     device: Arc<Device>,
     group_sync_sender: GroupSyncSender<(Vec<u8>, usize)>,
     up_counter: &mut SingleU64Adder,
-) -> io::Result<()> {
+) -> anyhow::Result<()> {
     let worker = {
         let device = device.clone();
         stop_manager.add_listener("tun_device_multi".into(), move || {
@@ -120,7 +119,7 @@ fn start_multi0(
     device: Arc<Device>,
     mut group_sync_sender: GroupSyncSender<(Vec<u8>, usize)>,
     up_counter: &mut SingleU64Adder,
-) -> io::Result<()> {
+) -> anyhow::Result<()> {
     loop {
         let mut buf = vec![0; 1024 * 16];
         let len = device.read(&mut buf[12..])? + 12;
diff --git a/vnt/src/util/notify.rs b/vnt/src/util/notify.rs
index 5e8ec68..defa700 100644
--- a/vnt/src/util/notify.rs
+++ b/vnt/src/util/notify.rs
@@ -1,9 +1,10 @@
 use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
 use std::sync::Arc;
+use std::thread;
 use std::thread::Thread;
 use std::time::Duration;
-use std::{io, thread};
 
+use anyhow::anyhow;
 use parking_lot::Mutex;
 
 #[derive(Clone)]
@@ -20,7 +21,7 @@ impl StopManager {
             inner: Arc::new(StopManagerInner::new(f)),
         }
     }
-    pub fn add_listener<F>(&self, name: String, f: F) -> io::Result<Worker>
+    pub fn add_listener<F>(&self, name: String, f: F) -> anyhow::Result<Worker>
     where
         F: FnOnce() + Send + 'static,
     {
@@ -61,23 +62,20 @@ impl StopManagerInner {
             stop_call: Mutex::new(Some(Box::new(f))),
         }
     }
-    fn add_listener<F>(self: &Arc<Self>, name: String, f: F) -> io::Result<Worker>
+    fn add_listener<F>(self: &Arc<Self>, name: String, f: F) -> anyhow::Result<Worker>
     where
         F: FnOnce() + Send + 'static,
     {
         if name.is_empty() {
-            return Err(io::Error::new(io::ErrorKind::Other, "name cannot be empty"));
+            return Err(anyhow!("name cannot be empty"));
         }
         let mut guard = self.listeners.lock();
         if guard.0 {
-            return Err(io::Error::new(io::ErrorKind::Other, "stopped"));
+            return Err(anyhow!("stopped"));
         }
         for (n, _) in &guard.1 {
             if &name == n {
-                return Err(io::Error::new(
-                    io::ErrorKind::Other,
-                    format!("stop add_listener {:?} name already exists", name),
-                ));
+                return Err(anyhow!("stop add_listener {:?} name already exists", name));
             }
         }
         guard.1.push((name.clone(), Box::new(f)));
diff --git a/vnt/src/util/scheduler.rs b/vnt/src/util/scheduler.rs
index 3680ea8..5d5485e 100644
--- a/vnt/src/util/scheduler.rs
+++ b/vnt/src/util/scheduler.rs
@@ -2,7 +2,6 @@ use crate::util::StopManager;
 use std::collections::BinaryHeap;
 use std::{
     cmp::Ordering,
-    io,
     sync::mpsc::{sync_channel, Receiver, SyncSender},
     time::{Duration, Instant},
 };
@@ -36,7 +35,7 @@ pub struct Scheduler {
     sender: SyncSender<Op>,
 }
 impl Scheduler {
-    pub fn new(stop_manager: StopManager) -> io::Result<Self> {
+    pub fn new(stop_manager: StopManager) -> anyhow::Result<Self> {
         let (sender, receiver) = sync_channel::<Op>(32);
         let s = Self { sender };
         let s_inner = s.clone();