diff --git a/protos/core/p2p.proto b/protos/core/p2p.proto
index 0067439..2337c87 100644
--- a/protos/core/p2p.proto
+++ b/protos/core/p2p.proto
@@ -5,14 +5,14 @@ package protocol;
 import "core/Discover.proto";
 
 
-option java_package = "org.gsc.protos"; //Specify the name of the package that generated the Java file
-option java_outer_classname = "P2p"; //Specify the class name of the generated Java file
+option java_package = "org.gsc.protos"; // the package name of the java files
+option java_outer_classname = "P2p"; //the java class file name
 
 message DisconnectMessage {
   int32 reason = 1;
 }
 
-message HelloMessage {
+message HelloMessage {// message sended after handshake
   Endpoint from = 1;
   int32 version = 2;
   int64 timestamp = 3;