msgtypes.py 文件源码

def get_payload(self):
        self.payload_fields.append(("Label", self.label))
        field_len_bytes = 32
        label = b"".join(little_endian(bitstring.pack("8", ord(c))) for c in self.label)
        padding = b"".join(little_endian(bitstring.pack("8", 0)) for i in range(field_len_bytes-len(self.label)))
        payload = label + padding
        return payload