text: Unknown = 0
  HeartbeatRequest = 1
  HeartbeatRespond = 2
  Login = 3
  LoginSuccessful = 4
  LoginFailure = 5
  TerminateTheConnection = 6
  Message = 7
  PermitLongMessage = 8
  AddFriend = 9
  DeleteFriend = 10
  ListFriendInvitation = 11
  AcceptFriendInvitation = 12
  ListFriend = 13
  CreateGroup = 14
  JoinGroup = 15
  ListGroup = 16
  ListJoinGroup = 17
  AcceptJoinGroup = 18
  AppointAdmin = 19
  TransferGroup = 20
  RevokeAdmin = 21
  DeleteMember = 22
  GroupMessage = 23
  PermitLongGroupMessage = 24
  ListGroupMember = 25
  ListGroupAdmin = 26
  SendFile = 27
  PermitSendFile = 28
  SendGroupFile = 29
  PermitSendGroupFile = 30
  DownloadGroupFile = 31
  ListGroupFile = 32
  PermitDownloadGroupFile = 33
  
  #
  LengthUsername = 50
  LengthPassword = 130
  LengthNickname = 50
  
  LoginDataOffsetUsernameLength = 0
  LoginDataOffsetUsername = 2
  LoginDataLengthUsername = 50
  LoginDataOffsetPasswordLength = 1
  LoginDataOffsetPassword = 52
  LoginDataLengthPassword = 130
  
  MessageOffsetMessageLength = 0
  MessageLengthMessageLength = 1
  MessageOffsetUUID = 1
  MessageLengthUUID = 4
  MessageOffsetMessage = 5
  MessageLengthMessage = 178
  
  MessageOffsetGroupMessageLength = 0
  MessageLengthGroupMessageLength = 1
  MessageOffsetGroupGUID = 1
  MessageLengthGroupGUID = 4
  MessageOffsetGroupUUID = 5
  MessageLengthGroupUUID = 4
  MessageOffsetGroupMessage = 9
  MessageLengthGroupMessage = 174
  
  UserInfoOffsetUsernameLength = 0
  UserInfoLengthUsernameLength = 1
  UserInfoOffsetNicknameLength = 1
  UserInfoLengthNicknameLength = 1
  UserInfoOffsetUUID = 2
  UserInfoLengthUUID = 4
  UserInfoOffsetUsername = 6
  UserInfoLengthUsername = 50
  UserInfoOffsetNickname = 56
  UserInfoLengthNickname = 50
  