def update(self, doc, process=None):
        if process is None:
            pk = 'id'
            id = doc.id
            doc.synced = False
            set = doc
        elif process == UPDATE_PROCESS:
            if self.db.docs.find({'sid': doc.sid}).count() == 0:
                return self.insert(doc, synced=True)
            pk = 'sid'
            id = doc.sid
            doc.synced = not doc.merged() # must be commited if was merged
            doc.merged(False)
            set = {'tid': doc.tid, 'data': doc.data, 'user': doc.user,
                   'public': doc.public, 'synced': doc.synced}
        elif process == COMMIT_PROCESS:
            pk = 'id'
            id = doc.id
            doc.synced = True
            set = {'sid': doc.sid, 'tid': doc.tid, 'synced': doc.synced}
        else:
            raise DatabaseException('Incorrect update process')

        try:
            rs = self.db.docs.update({pk: id}, {'$set': set}, safe=True)
            assert rs['n'] == 1
        except Exception as e:
            raise DatabaseException(e)
        return doc
def __init__(self, host, key, port=443, max_size=4096):

        # Params for all class
        self.host = host
        self.port = port
        self.max_size = max_size - 60
        self.AESDriver = AESCipher(key=key)
        self.serv_addr = (host, port)

        # Class Globals
        self.max_packets = 255 # Limitation by QUIC itself.
        self._genSeq()   # QUIC Sequence is used to know that this is the same sequence,
                          # and it's a 20 byte long that is kept the same through out the
                          # session and is transfered hex encoded.
        self.delay = 0.1

        self.sock = None
        if self._createSocket() is 1:               # Creating a UDP socket object
            sys.exit(1)
        self.serv_addr = (self.host, self.port)     # Creating socket addr format