214 Help message.On how to use the server or the meaning of a particular non-standard command. This reply is useful only to the human user.
214 Help message.On how to use the server or the meaning of a particular non-standard command. This reply is useful only to the human user.
帮助信息。关于如何使用本服务器或特殊的非标准命令。此回复只对人有用。