diff --git a/src/client.rs b/src/client.rs
index 87905f7..3efb6a6 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -17,7 +17,7 @@ use crate::udp::{UDPVpnPacket, UDPVpnHandshake, UDPSerializable};
 use network_interface::NetworkInterface;
 use network_interface::NetworkInterfaceConfig;
 
-pub async fn client_mode(client_config: ClientConfiguration, fd: i32) {
+pub async fn client_mode(client_config: ClientConfiguration, fd: i32) -> i16 {
     info!("Starting client...");
 
     let sock = UdpSocket::bind("0.0.0.0:25565").await.unwrap();
@@ -136,10 +136,9 @@ pub async fn client_mode(client_config: ClientConfiguration, fd: i32) {
         }
     }*/
     let mut buf = vec![0; 2048];
-    loop {
-        while let Ok(n) = dev.read(&mut buf) {
-            info!("Read from tun. {:?} bytes", n);
-        }
+    while let Ok(n) = dev.read(&mut buf) {
+        info!("Read from tun. {:?} bytes", n);
     }
     info!("end.");
+    -2
 }
\ No newline at end of file
diff --git a/src/mobile.rs b/src/mobile.rs
index 992fdd1..c1cc466 100644
--- a/src/mobile.rs
+++ b/src/mobile.rs
@@ -8,7 +8,7 @@ use jni::sys::jint;
 pub fn mobile_run(cfg_raw: String, close_fd_on_drop: bool, tun_fd: jint) -> c_int {
     let config: ClientConfiguration = serde_yaml::from_slice(RFC4648.decode(cfg_raw.as_bytes()).unwrap().as_slice()).expect("Bad client config file structure");
 
-    client::client_mode(config, tun_fd).await;
+    client::client_mode(config, tun_fd).await
     /*let block = async move {
         let mut config = tun2::Configuration::default();
 
@@ -20,7 +20,6 @@ pub fn mobile_run(cfg_raw: String, close_fd_on_drop: bool, tun_fd: jint) -> c_in
 
         join_handle.await.map_err(std::io::Error::from)?
     };*/
-    -1
 }
 
 pub fn mobile_stop() -> c_int {