Is there a Protocol for Serial exchange between Qt and the Arduino?

Welcome!
In General, searched for a ready exchange Protocol at the Serial between Arduino and Qt with flow control =)
Maybe someone met?
UPDT:
Requirements are as follows:
1. The most important thing - guaranteed delivery/adoption teams, in case of error redirection
2. The ability to send large amounts of data (a minimum of 500 bytes / message)
3. Implementation in C++ and Arduino
4. The ease and prevalence

I understand that maybe the requirements are mutually exclusive, but all of a sudden =)