Writes period terminated data to socket. The data is terminated by a line containing only a period, that is, the character sequence "<CRLF>.<CRLF>". Before sending a line of text, check the first character of the line.If it is a period, one additional period is inserted at the beginning of the line.

Writes period terminated string to socket. The data is terminated by a line containing only a period, that is, the character sequence "<CRLF>.<CRLF>". Before sending a line of text, check the first character of the line.If it is a period, one additional period is inserted at the beginning of the line.