Unsure what format to enter in reply

[johnwasser]

@cequra

and also tried
client.write("[P]\0x00\0x02\0x06\0x0d\0x0a", 8);
Still no joy

"[ P ] \0 x 0 0 \0 x 0 2 \0 x 0 6 \0 x 0 d \0 x 0 a"
That is 22 characters.