Renew challenge on expiry

include/controller.h

@@ -113,6 +113,17 @@ private:
      */
     void processMessage(SignedMessage* message);
 
+    /**
+     * @brief Checks that the message is valid and prepares a challenge.
+     * 
+     * This function is also called when a challenge response arrives too late.
+     * 
+     * @param message The message to respond to
+     * 
+     * Note: Prepares the response in the outgoing message buffer.
+     */
+    void checkAndPrepareChallenge(Message* message);
+
     /**
      * @brief Prepare a server challenge for a local or socket message.
      * 

include/message.h

@@ -59,8 +59,11 @@ enum class MessageResult: uint8_t {
     /// @brief A message is already being processed
     TooManyRequests = 8,
 
-    InvalidUrlParameter = 10, 
-    InvalidResponseAuthentication = 11,
+    /// @brief The received message result was invalid
+    InvalidMessageResult = 9,
+
+    /// @brief An invalid Url parameter was set sending a message to the device over a local connection
+    InvalidUrlParameter = 10,
 
 };