#!/bin/bash
exec 3<>/dev/tcp/localhost/9990

echo -e "GET /health/ready HTTP/1.1\r\nHost: localhost:9990\r\nConnection: close\r\n\r\n" >&3

timeout --preserve-status 1 cat <&3 | grep -m 1 status | grep -m 1 UP
ERROR=$?

exec 3<&-
exec 3>&-

exit $ERROR