From 86544b6ad3d42db2918e1d13a1638dc12311adee Mon Sep 17 00:00:00 2001
From: lilly <li@lly.sh>
Date: Wed, 20 May 2026 12:46:04 +0200
Subject: [PATCH] define Data message type

---
 README.md | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/README.md b/README.md
index beacf83..78aa2dd 100644
--- a/README.md
+++ b/README.md
@@ -89,12 +89,21 @@ It has no payload.
 
 A message which MAY be originated by a node to check for reachability of other nodes in the network.
 Nodes which receive this message SHOULD respond with a *Pong* message.
+It has no payload.
 
 #### Message Type *Pong*
 
 - Message Type `0x04`
 
 A message which MUST ONLY be originated by a node in response to a previous *Ping* message.
+It has no payload.
+
+#### Message Type *Data*
+
+- Message Type `0x10`
+
+This message is used for actual data transfer between nodes.
+It's payload makes up the remainder of the UDP datagram and the content is up to the upper protocol to decide.
 
 
 ### Chat