name \w+ name \w+ name \w+ \n
(\w+ hkey \w* `:` \w* value \n) 
\n
<DATA> 

------------------
name := printable_asci, non whitespace/newline +
value:= printable_asci, non whitespace/newline *

hkey  : ditto minus ":"

\w := "\ "|"\t"
\n := "\n"

-------------------
headers must contain "Content-Length" with data length
