PRIVATE_APP constant
PortNum
const PRIVATE_APP
Private applications should use portnums >= 256. To simplify initial development and testing you can use "PRIVATE_APP" in your code without needing to rebuild protobuf files (via regen-protos.sh)
Implementation
static const PortNum PRIVATE_APP =
PortNum._(256, _omitEnumNames ? '' : 'PRIVATE_APP');