create and listen on /dev/tcp

mknod /dev/tcp c 30 36
mknod /dev/udp c 30 39
exec 3<>/dev/tcp/$host/$port
#echo -n -e "GET / HTTP/1.1
host: http://www.google.com\r
\r
" >&3
#close fd
exec 3<&-
exec 3>&-