public override bool VarChanged(Topic snd, bool delete) {
if(snd==_T) {
if(delete && _H!=null) {
_H.Remove();
}
return true;
} else if(snd==_H) {
if(delete && _T!=null) {
_T.Remove();
}
return true;
}
return false;
}
public override bool Recv(byte[] buf) {