Print data, followed by a carriage return and newline, to the server a client is connected to. Prints numbers as a sequence of digits, each an ASCII character (e.g. the number 123 is sent as the three characters ‘1’, ‘2’, ‘3’).
client.println()
client.println(data)
client.print(data, BASE)
data (optional): the data to print (char, byte, int, long, or string)
BASE (optional): the base in which to print numbers: DEC for decimal (base 10), OCT for octal (base 8), HEX for hexadecimal (base 16).
byte: return the number of bytes written, though reading that number is optional