diff --git a/__network/quinn/src/main.rs b/__network/quinn/src/main.rs
index 19f2bb7..36ed941 100644
--- a/__network/quinn/src/main.rs
+++ b/__network/quinn/src/main.rs
@@ -1,8 +1,10 @@
 use std::{error::Error, net::SocketAddr};
 use std::sync::Arc;
+use std::time::Duration;
 
 use futures_util::stream::StreamExt;
 use quinn::{ClientConfig, Endpoint, Incoming, ServerConfig};
+use tokio::time::sleep;
 
 #[tokio::main]
 async fn main() -> Result<(), Box<dyn Error>> {
@@ -36,11 +38,25 @@ fn run_server(addr: SocketAddr) -> Result<Vec<u8>, Box<dyn Error>> {
     let (mut incoming, server_cert) = make_server_endpoint(addr)?;
     // accept a single connection
     tokio::spawn(async move {
-        let quinn::NewConnection { connection, .. } = incoming.next().await.unwrap().await.unwrap();
+        let quinn::NewConnection {
+            connection,
+            mut bi_streams,
+            ..
+        } = incoming.next().await.unwrap().await.unwrap();
         println!(
             "[server] incoming connection: addr={}",
             connection.remote_address()
         );
+        while let Some(Ok((_send, mut recv))) = bi_streams.next().await {
+            let mut buff = [0_u8; 32];
+            match recv.read(&mut buff).await {
+                Ok(None) => { break; }
+                Ok(Some(n)) => {
+                    println!("Received: {:x?}", &buff[..n]);
+                }
+                Err(e) => { println!("Error: {:?}", e); }
+            }
+        }
     });
 
     Ok(server_cert)
@@ -51,6 +67,9 @@ async fn run_client(endpoint: &Endpoint, server_addr: SocketAddr) {
     let connect = endpoint.connect(server_addr, "localhost").unwrap();
     let quinn::NewConnection { connection, .. } = connect.await.unwrap();
     println!("[client] connected: addr={}", connection.remote_address());
+    let (mut send, _recv) = connection.open_bi().await.unwrap();
+    send.write_all(b"hello world").await.unwrap();
+    sleep(Duration::from_millis(500)).await;
 }
 
 pub fn make_client_endpoint(