diff --git a/src/main/java/java/src/Sending/Data/EDataType.java b/src/main/java/java/src/Sending/Data/EDataType.java
new file mode 100644
index 0000000..30c7623
--- /dev/null
+++ b/src/main/java/java/src/Sending/Data/EDataType.java
@@ -0,0 +1,11 @@
+package java.src.Sending.Data;
+
+public enum EDataType {
+    OnlineStateRequest,
+    OnlineStateResponse,
+    OnlineStateNotification,
+    PullFileListRequest,
+    PublishFileNameNotification,
+    PullFileRequest,
+    SendFileReply
+}