Qt Remote Objects uses an internal protocol to pass data between processes and/or devices. The same protocol version needs to be used by all parties: if there is a mismatch, the connecting node will output a warning and the host node will not send any data.
目前发行的版本：
| Protocol Version | Qt Version |
|---|---|
| <1.2 | Used during QtRO's tech preview phase. |
| 1.2 | 5.12.0 |
| 1.3 | 5.12.4 |
| 2.0 | 6.2.0 |
