diff --git a/server/stat/src/upstream/upstreammgr.rs b/server/stat/src/upstream/upstreammgr.rs
index 78fc044..6de4795 100644
--- a/server/stat/src/upstream/upstreammgr.rs
+++ b/server/stat/src/upstream/upstreammgr.rs
@@ -1,10 +1,12 @@
 use std::rc::{Rc, Weak};
 use std::cell::RefCell;
 use std::sync::{Arc, Mutex};
-use std::error::Error;
 use tokio::net::{TcpStream, ToSocketAddrs};
 use tokio::io::AsyncWriteExt;
 use tokio::runtime::Runtime;
+use tokio::io::Interest;
+use std::error::Error;
+use std::io;
 
 use r9_macro::SharedFromSelf;
 use r9_macro_derive::SharedFromSelf;
@@ -17,11 +19,45 @@ pub struct UpStreamMgr {
 }
 
 async fn run_app() -> Result<(), Box<dyn Error>> {
-    // Connect to a peer
-    let mut stream = TcpStream::connect("127.0.0.1:8080").await?;
+    let mut stream = TcpStream::connect("192.168.100.39:7617").await?;
 
-    // Write some data.
-    stream.write_all(b"hello world!").await?;
+    loop {
+        let ready = stream.ready(Interest::READABLE | Interest::WRITABLE).await?;
+
+        if ready.is_readable() {
+            let mut data = vec![0; 1024];
+            // Try to read data, this may still fail with `WouldBlock`
+            // if the readiness event is a false positive.
+            match stream.try_read(&mut data) {
+                Ok(n) => {
+                    println!("read {} bytes", n);
+                }
+                Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => {
+                    continue;
+                }
+                Err(e) => {
+                    //return Err(e.into());
+                }
+            }
+
+        }
+
+        if ready.is_writable() {
+            // Try to write data, this may still fail with `WouldBlock`
+            // if the readiness event is a false positive.
+            match stream.try_write(b"hello world") {
+                Ok(n) => {
+                    println!("write {} bytes", n);
+                }
+                Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => {
+                    continue
+                }
+                Err(e) => {
+                    //return Err(e.into());
+                }
+            }
+        }
+    }
 
     Ok(())
 }
@@ -39,6 +75,7 @@ impl UpStreamMgr {
         std::thread::spawn(move || {
             let rt = tokio::runtime::Builder::new_multi_thread()
                 .worker_threads(4)
+                .enable_all()
                 .thread_name("my-custom-name")
                 .thread_stack_size(3 * 1024 * 1024)
                 .build()