diff --git a/src/lib.rs b/src/lib.rs
index b69a038..7f72315 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -8,6 +8,27 @@ enum Message {
     Terminate,
 }
 
+pub mod protocol_messages {
+    pub const REQUEST: &'static str = "?request:";
+    pub const INFO: &'static str = "?info!";
+
+    // results
+    pub const SUCCESS: &'static str = "!success:";
+    pub const ERROR: &'static str = "!error:";
+
+    // connect commands
+    pub const CONNECT: &'static str = "!connect:";
+    pub const DISCONNECT: &'static str = "!disconnect:";
+
+    // server commands
+    pub const UPDATE_CLIENTS: &'static str = "!clientUpdate:";
+    pub const CLIENT: &'static str = "!client:";
+    pub const TEST: &'static str = "!test:";
+
+    // ptp commands
+    pub const MESSAGE: &'static str = "!message:";
+}
+
 pub struct ThreadPool{
     workers: Vec<Worker>,
     sender: mpsc::Sender<Message>,