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Httpck on bash script results in Socket error

I am using for dovecot this health-check pass through option. Where a bash script is just returning the http response. Although the curl gives me an ok connection, haproxy keeps giving me “Socket error: Connection reset by peer”

Is this because this bash script is not closing the connection properly?

[@temp]$ curl http://test2.local:5001/ -v
* About to connect() to test2.local port 5001 (#0)
*   Trying connected
* Connected to test2.local ( port 5001 (#0)
> GET / HTTP/1.1
> User-Agent: curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.44 zlib/1.2.3 libidn/1.18 libssh2/1.4.2
> Host: test2.local:5001
> Accept: */*
< HTTP/1.1 200 OK
< Content-Length: 47
< Content-Type: text/html
<html><body>MySQL is running.</body></html>

* Connection #0 to host test2.local left intact
* Closing connection #0

backend config

backend imap
  mode tcp
  balance leastconn
  stick store-request src
  stick-table type ip size 200k expire 30m
  option httpchk GET / HTTP/1.0
  http-check expect status 200
  default-server resolvers dnssvrs1
  server s2 test2.local:10143 check port 5001 send-proxy-v2

dovecot conf

service health-check {
  # example health-check.
  executable = script -p /bin/health-check.sh
  inet_listener health-check {
      # not working env:PORT0
      port = 5001

Capture the health check traffic and look at it. That is way faster than any other troubleshooting or guessing around this issue.