diff --git a/src/crypto.rs b/src/crypto.rs
index 21e0cca..0901a78 100644
--- a/src/crypto.rs
+++ b/src/crypto.rs
@@ -1,5 +1,5 @@
 extern crate rand;
-extern crate rand_os;
+ extern crate rand_os;
 extern crate ed25519_dalek;
 
 use ed25519_dalek::{PublicKey as PK, Keypair, Signature};
diff --git a/src/ironforce.rs b/src/ironforce.rs
index 87642af..b246bbf 100644
--- a/src/ironforce.rs
+++ b/src/ironforce.rs
@@ -45,7 +45,7 @@ impl IronForce {
                 MsgType::MultiCast => {
 
                 },
-                MsgType::UniCast(Target) => {
+                MsgType::UniCast(target) => {
 
                 }
             }
diff --git a/src/lib.rs b/src/lib.rs
index f5d2c54..1ca6b28 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,6 +1,8 @@
 #![no_std]
 
 extern crate alloc;
+#[cfg(feature = "std")]
+extern crate std;
 
 
 mod ironforce;
diff --git a/src/transport.rs b/src/transport.rs
index 8cebb08..2550660 100644
--- a/src/transport.rs
+++ b/src/transport.rs
@@ -1,41 +1,43 @@
 use crate::message::{Message, MsgType};
+use crate::crypto::PublicKey;
+
+#[cfg(feature = "std")]
 use crate::way::Way;
+#[cfg(feature = "std")]
+use std::thread;
 
 use alloc::vec::Vec;
 use alloc::boxed::Box;
 
 #[cfg(not(feature = "std"))]
-pub struct Transport {
-    id: [u8; 64]
-}
+pub struct Transport {}
 
 #[cfg(feature = "std")]
 pub struct Transport {
-    ways: Vec<Box<dyn Way>>,
-    id: [u8; 64]
+    ways: Vec<Box<dyn Way + Send>>,
+    msg_pool: Vec<Message>,
 }
 
 #[cfg(not(feature = "std"))]
 impl Transport {
     pub fn new() -> Self {
-        Self {id: [0; 64]}
+        Self {}
     }
 
-    pub fn send(&self, msg: &Message) {
+    pub fn send(&self, msg: &Message) {}
 
-    }
-
-    pub fn receive(&self) -> Message {
-        Message::new(MsgType::Service,
-                     Vec::<u8>::new(),
-                     &crate::crypto::Keys::gen())
+    pub fn receive(&self) -> (Message, PublicKey) {
+        (Message::new(MsgType::Service,
+                      Vec::<u8>::new(),
+                      &crate::crypto::Keys::gen()), PublicKey { key: [0u8; 32] })
     }
 }
 
 #[cfg(feature = "std")]
 impl Transport {
     pub fn new() -> Self {
-        Self {ways: Vec::<Box<dyn Way>>::new(), id: [0; 64]}
+        let transport = Self { ways: Vec::<Box<dyn Way + Send>>::new(), msg_pool: Vec::<Message>::new() };
+        transport
     }
 
     pub fn send(&self, msg: &Message) {
@@ -44,9 +46,22 @@ impl Transport {
         }
     }
 
-    pub fn receive(&self) -> Message {
-        Message::new(MsgType::Service,
-                     Vec::<u8>::new(),
-                     &crate::crypto::Keys::gen())
+    pub fn receive(&self) -> (Message, PublicKey) {
+        (Message::new(MsgType::MultiCast,
+                      Vec::<u8>::new(),
+                      &crate::crypto::Keys::gen()), PublicKey { key: [1u8; 32] })
+    }
+
+    fn receive_through_way_in_loop_and_add_in_pool(&mut self, way: &mut Box<dyn Way + Send>) {
+        loop {
+            let mut msg = way.receive();
+            self.msg_pool.push(msg);
+        }
+    }
+
+    fn start_receiving_thread(&'static mut self) {
+        thread::spawn(|| {
+            self.receive_through_way_in_loop_and_add_in_pool(&mut self.ways[0]);
+        });
     }
 }
diff --git a/src/tunnel.rs b/src/tunnel.rs
index 2c58cb0..94494d3 100644
--- a/src/tunnel.rs
+++ b/src/tunnel.rs
@@ -1,4 +1,5 @@
 use crate::crypto::PublicKey;
+
 use alloc::vec::Vec;
 use serde::{Serialize, Deserialize};
 
@@ -6,3 +7,13 @@ use serde::{Serialize, Deserialize};
 pub struct Tunnel {
     nodes: Vec<PublicKey>
 }
+
+impl Tunnel {
+    pub fn tunnel_to(&self, me: &PublicKey, to: &PublicKey) -> Option<Tunnel> {
+        None
+    }
+
+    pub fn next(&self, to: &PublicKey) -> PublicKey {
+        PublicKey { key: [0u8; 32] }
+    }
+}