BIG change, join center,bus; now msg is head+body.

lichao

2021-04-08 c338820e4db43ad32c20ff429a038b06bcb980f8

 .vscode/launch.json

@@ -8,7 +8,7 @@
            "name": "g++ - Build and debug active file",
            "type": "cppdbg",
            "request": "launch",
            "program": "${workspaceFolder}/utest/utest",
            "program": "${workspaceFolder}/debug/bin/utest",
            "args": [
                "-t",
                "ReqRepTest"