diff --git a/Cargo.toml b/Cargo.toml
index 1307377..02d1523 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,3 +23,5 @@ lru = { version = "0.12" }
 [dev-dependencies]
 tokio = { version = "1", features = ["full"] }
 test-log = { version = "0.2" }
+clap = { version = "4.4", features = ["derive", "env", "color"] }
+tracing-subscriber = { version = "0.3", features = ["env-filter", "std"] }
\ No newline at end of file
diff --git a/examples/simple.rs b/examples/simple.rs
new file mode 100644
index 0000000..62b16ce
--- /dev/null
+++ b/examples/simple.rs
@@ -0,0 +1,69 @@
+use std::{net::SocketAddr, time::Duration};
+
+use atm0s_small_p2p::{P2pNetwork, P2pNetworkConfig};
+use clap::Parser;
+use rustls::pki_types::{CertificateDer, PrivatePkcs8KeyDer};
+use tracing_subscriber::{fmt, layer::SubscriberExt, util::SubscriberInitExt, EnvFilter};
+
+pub const DEFAULT_CLUSTER_CERT: &[u8] = include_bytes!("../certs/dev.cluster.cert");
+pub const DEFAULT_CLUSTER_KEY: &[u8] = include_bytes!("../certs/dev.cluster.key");
+
+/// A Relayer node which can connect to each-other to build a high-available relay system
+#[derive(Parser, Debug)]
+#[command(author, version, about, long_about = None)]
+struct Args {
+    /// UDP/TCP port for serving QUIC/TCP connection for SDN network
+    #[arg(env, long, default_value = "127.0.0.1:11111")]
+    sdn_listener: SocketAddr,
+
+    /// Seeds
+    #[arg(env, long, value_delimiter = ',')]
+    sdn_seeds: Vec<SocketAddr>,
+
+    /// Allow it broadcast address to other peers
+    /// This allows other peer can active connect to this node
+    /// This option is useful with high performance relay node
+    #[arg(env, long)]
+    sdn_advertise_address: Option<SocketAddr>,
+}
+
+#[tokio::main]
+async fn main() {
+    rustls::crypto::ring::default_provider().install_default().expect("should install ring as default");
+
+    if std::env::var_os("RUST_LOG").is_none() {
+        std::env::set_var("RUST_LOG", "info");
+    }
+    if std::env::var_os("RUST_BACKTRACE").is_none() {
+        std::env::set_var("RUST_BACKTRACE", "1");
+    }
+    let args: Args = Args::parse();
+    tracing_subscriber::registry().with(fmt::layer()).with(EnvFilter::from_default_env()).init();
+
+    let key = PrivatePkcs8KeyDer::from(DEFAULT_CLUSTER_KEY.to_vec());
+    let cert = CertificateDer::from(DEFAULT_CLUSTER_CERT.to_vec());
+
+    let mut p2p = P2pNetwork::new(P2pNetworkConfig {
+        addr: args.sdn_listener,
+        advertise: args.sdn_advertise_address,
+        priv_key: key,
+        cert: cert,
+        tick_ms: 100,
+    })
+    .await
+    .expect("should create network");
+
+    let requester = p2p.requester();
+    tokio::spawn(async move {
+        loop {
+            for seed in &args.sdn_seeds {
+                requester.try_connect((*seed).into());
+            }
+            tokio::time::sleep(Duration::from_secs(1)).await;
+        }
+    });
+
+    loop {
+        p2p.recv().await.expect("should ok");
+    }
+}
diff --git a/src/stream.rs b/src/stream.rs
index dcec941..3bfc548 100644
--- a/src/stream.rs
+++ b/src/stream.rs
@@ -7,10 +7,8 @@ use std::{
 
 use anyhow::anyhow;
 use serde::{de::DeserializeOwned, Serialize};
-use tokio_util::{
-    bytes::{Buf, BufMut},
-    codec::{Decoder, Encoder},
-};
+use tokio_util::codec::LengthDelimitedCodec;
+use tokio_util::codec::{Decoder, Encoder};
 
 use quinn::{RecvStream, SendStream};
 use tokio::io::{AsyncRead, AsyncReadExt, AsyncWrite, AsyncWriteExt};
@@ -57,49 +55,54 @@ impl AsyncWrite for P2pQuicStream {
 }
 
 pub struct BincodeCodec<Item> {
+    length_decode: LengthDelimitedCodec,
     _tmp: PhantomData<Item>,
 }
 
 impl<Item> Default for BincodeCodec<Item> {
     fn default() -> Self {
-        Self { _tmp: Default::default() }
+        Self {
+            length_decode: LengthDelimitedCodec::default(),
+            _tmp: Default::default(),
+        }
     }
 }
 
 impl<Item: Serialize> Encoder<Item> for BincodeCodec<Item> {
-    type Error = bincode::Error;
+    type Error = std::io::Error;
 
     fn encode(&mut self, item: Item, dst: &mut tokio_util::bytes::BytesMut) -> Result<(), Self::Error> {
-        let res = bincode::serialize_into(dst.writer(), &item);
-        res
+        let data: Vec<u8> = bincode::serialize(&item).map_err(|_| std::io::Error::new(std::io::ErrorKind::InvalidData, "bincode serialize failure"))?;
+        self.length_decode.encode(data.into(), dst)
     }
 }
 
 impl<Item: DeserializeOwned + Debug> Decoder for BincodeCodec<Item> {
-    type Error = bincode::Error;
+    type Error = std::io::Error;
     type Item = Item;
 
     fn decode(&mut self, src: &mut tokio_util::bytes::BytesMut) -> Result<Option<Self::Item>, Self::Error> {
-        if src.is_empty() {
-            return Result::<_, Self::Error>::Ok(Option::<Self::Item>::None);
+        match self.length_decode.decode(src)? {
+            Some(buf) => Ok(Some(
+                bincode::deserialize(&buf).map_err(|_| std::io::Error::new(std::io::ErrorKind::InvalidData, "bincode deserialize failure"))?,
+            )),
+            None => Ok(None),
         }
-        let res = bincode::deserialize_from::<_, Item>(src.reader()).map(|o| Some(o));
-        res
     }
 }
 
 pub async fn wait_object<R: AsyncRead + Unpin, O: DeserializeOwned, const MAX_SIZE: usize>(reader: &mut R) -> anyhow::Result<O> {
     let mut len_buf = [0; 2];
     let mut data_buf = [0; MAX_SIZE];
-    reader.read_exact(&mut len_buf).await?;
+    reader.read_exact(&mut len_buf).await.unwrap();
     let handshake_len = u16::from_be_bytes([len_buf[0], len_buf[1]]) as usize;
     if handshake_len > data_buf.len() {
         return Err(anyhow!("packet to big {} vs {MAX_SIZE}", data_buf.len()));
     }
 
-    reader.read_exact(&mut data_buf[0..handshake_len]).await?;
+    reader.read_exact(&mut data_buf[0..handshake_len]).await.unwrap();
 
-    Ok(bincode::deserialize(&data_buf[0..handshake_len])?)
+    Ok(bincode::deserialize(&data_buf[0..handshake_len]).unwrap())
 }
 
 pub async fn write_object<W: AsyncWrite + Send + Unpin, O: Serialize, const MAX_SIZE: usize>(writer: &mut W, object: &O) -> anyhow::Result<()> {
@@ -109,7 +112,7 @@ pub async fn write_object<W: AsyncWrite + Send + Unpin, O: Serialize, const MAX_
     }
     let len_buf = (data_buf.len() as u16).to_be_bytes();
 
-    writer.write_all(&len_buf).await?;
-    writer.write_all(&data_buf).await?;
+    writer.write_all(&len_buf).await.unwrap();
+    writer.write_all(&data_buf).await.unwrap();
     Ok(())
 }