[in] Buffer[53/53]
[000] 03 00 00 00 03 00 00 00  00 00 02 00 04 00 02 00  ........ ........
[010] 00 00 00 00 04 00 00 00  00 00 00 00 04 00 00 00  ........ ........
[020] 66 6F 6F 00 05 00 00 00  00 00 00 00 05 00 00 00  foo..... ........
[030] 62 61 72 32 00                                    bar2. 
srv_midltests_fn: Start
srv_midltests_fn: End
[out] Buffer[4]
[000] 54 72 75 65                                       True