recv the next message that matches the given condition
        type can be a string or a list of strings

def recv_match(self, condition=None, type=None, blocking=False):
        '''recv the next message that matches the given condition
        type can be a string or a list of strings'''
        if type is not None and not isinstance(type, list):
            type = [type]
        while True:
            m = self.recv_msg()
            if m is None:
                return None
            if type is not None and not m.get_type() in type:
                continue
            if not mavutil.evaluate_condition(condition, self.messages):
                continue
            return m