diff --git a/src/ironforce.rs b/src/ironforce.rs
index 796c5f5..8e8fcbe 100644
--- a/src/ironforce.rs
+++ b/src/ironforce.rs
@@ -46,7 +46,7 @@ impl IronForce {
                 self.send_through_tunnel_to(msg, tunnel, &node)
             }
             if count == MULTICAST_TUNNELS {
-                break;
+                break
             }
         }
         count
@@ -82,7 +82,7 @@ impl IronForce {
                     let tunnel = match &msg.tunnel {
                         crate::message::MsgTunnel::Tunnel(t) => t,
                         crate::message::MsgTunnel::NoTunnel => panic!()
-                    } ;
+                    };
                     self.send_through_tunnel_to(msg, tunnel, target)
                 }
             }
diff --git a/src/lib.rs b/src/lib.rs
index 0f0f9d7..e393392 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -33,7 +33,7 @@ mod tests {
             let mut iforce = IronForce::new();
             assert_eq!(
                 iforce.new_message(
-                    MsgType::Service, &Vec::<u8>::new()
+                    MsgType::Service, &Vec::<u8>::new(),
                 ),
                 Message::new(MsgType::Service, Vec::<u8>::new(), &iforce.key_pack)
             );
diff --git a/src/message.rs b/src/message.rs
index 01b65c8..e29ba57 100644
--- a/src/message.rs
+++ b/src/message.rs
@@ -15,21 +15,23 @@ fn get_hash(b: &Vec<u8>) -> Vec<u8> {
 
 #[derive(Debug, PartialEq, Serialize, Deserialize, Clone)]
 pub enum MsgType {
-    MultiCast,   // No source, sign and tunnel
-    UniCast(PublicKey /* destination */),   // has source, sign and tunnel
+    MultiCast,
+    // No source, sign and tunnel
+    UniCast(PublicKey /* destination */),
+    // has source, sign and tunnel
     Service,   // Has source and sign but no tunnel
 }
 
 #[derive(Debug, PartialEq, Serialize, Deserialize, Clone)]
 pub enum Sign {
     NoSign,
-    Signed(PublicKey /* source */, Vec<u8> /* sign */)
+    Signed(PublicKey /* source */, Vec<u8> /* sign */),
 }
 
 #[derive(Debug, PartialEq, Serialize, Deserialize, Clone)]
 pub enum MsgTunnel {
     NoTunnel,
-    Tunnel(Tunnel)
+    Tunnel(Tunnel),
 }
 
 #[derive(Debug, PartialEq, Serialize, Deserialize, Clone)]
@@ -60,10 +62,12 @@ impl MessageContent {
 #[derive(Debug, PartialEq, Serialize, Deserialize, Clone)]
 pub struct Message {
     pub content: MessageContent,
-    pub content_hash: Vec<u8>,   // hash for signing
-    pub hash: Vec<u8>,    // hash for checking integrity
+    pub content_hash: Vec<u8>,
+    // hash for signing
+    pub hash: Vec<u8>,
+    // hash for checking integrity
     pub sign: Sign,
-    pub tunnel: MsgTunnel
+    pub tunnel: MsgTunnel,
 }
 
 impl Message {
@@ -74,19 +78,19 @@ impl Message {
     }
 
     pub fn new(msg_type: MsgType, body: Vec<u8>, key_pack: &Keys) -> Message {
-        let content= MessageContent::new(msg_type.clone(), body);
+        let content = MessageContent::new(msg_type.clone(), body);
         let content_hash = content.get_hash();
         let mut msg = Message {
             content,
             content_hash,
             hash: Vec::<u8>::new(),
             sign: Sign::NoSign,
-            tunnel: MsgTunnel::NoTunnel
+            tunnel: MsgTunnel::NoTunnel,
         };
         msg.sign = match msg_type {
             MsgType::UniCast(_) | MsgType::Service => {
                 Sign::Signed(key_pack.get_public(), key_pack.sign(&msg.content_hash))
-            },
+            }
             MsgType::MultiCast => { Sign::NoSign }
         };
         msg.hash = msg.get_hash();
diff --git a/src/transport.rs b/src/transport.rs
index 6f6150e..d68ee5f 100644
--- a/src/transport.rs
+++ b/src/transport.rs
@@ -42,11 +42,13 @@ impl Transport {
     }
 
     pub fn send_service(&self, msg: &Message) {
-
+        // todo
+        // send message through radio (using pins)
     }
 
     pub fn send_to(&self, msg: &Message, to: &PublicKey) {
-
+        // todo
+        // send message through radio (using pins)
     }
 }
 
@@ -75,8 +77,7 @@ impl Transport {
             self.msg_pool = self.msg_pool[1..].to_vec();
             return msg;
         }
-        return self.receive();   // recursion: infinite loop
-        //                          until we get a message (see exit condition above)
+        return self.receive();   // recursion: infinite loop until we get a message (see exit condition above)
     }
 
     fn way_receiving_loop(&mut self, i: i32) {