protocol: add basic communicate protocol pack and unpack.

Test/CMakeLists.txt

@@ -0,0 +1,8 @@
+cmake_minimum_required(VERSION 3.16)
+
+project(frelayTest LANGUAGES CXX)
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+add_executable(frelayTest protocolTest.cpp)
+target_link_libraries(frelayTest PRIVATE Protocol)

Test/protocolTest.cpp

@@ -0,0 +1,19 @@
+#include <Protocol.h>
+#include <QDebug>
+
+int main()
+{
+    auto frame = QSharedPointer<FrameBuffer>::create();
+    frame->type = FBT_CLI_BIN_FILEDATA;
+    frame->fid = "client123";
+    frame->tid = "file456";
+    frame->data = QByteArray("This is test binary data", 24);
+
+    QByteArray packet = Protocol::PackBuffer(frame);
+    qDebug() << "Test1 - Packed data size:" << packet.size();
+    qDebug() << "Packed data hex:" << packet.toHex();
+
+    auto ret = Protocol::ParseBuffer(packet);
+
+    return 0;
+}