CoapPacket

- `getBytes()` now encodes the token

Packet (unit tests)

- Check the encoding of the token

source/doap/packet.d

@@ -55,6 +55,12 @@ public class CoapPacket
             encoded ~= [hiByte, lowByte];
         }
 
+        // Set the token (if any)
+        if(tokenLen)
+        {
+            encoded ~= token;
+        }
+        
         return encoded;
     }
 
@@ -169,4 +175,9 @@ unittest
     assert(thirdByte == 1);
     assert(fourthByte == 1);
 
+    // Ensure the token is [0, 69]
+    ubyte fifthByte = encoded[4], sixthByte = encoded[5];
+    assert(fifthByte == 0);
+    assert(sixthByte == 69);
+
 }