[AEM service freeze] Unable to parse response: Premature end in HTTP response, state = 0

Hello, has anybody seen the following error? it has apparently been fixed by server reboot but I want to know the cause in order to prevent to happen again:

[Thu Jul 13 20:10:36 2017] [D] [11929] Found farm mypublish.com

[Thu Jul 13 20:10:36 2017] [D] [11929] checking [en/home.html]

[Thu Jul 13 20:10:36 2017] [D] [11929] cachefile does not exist: /mnt/var/www/html/mypublish.com/en/home.html

[Thu Jul 13 20:10:36 2017] [D] [11929] try to create new cachefile: /mnt/var/www/html/mypublish.com/en/home.html

[Thu Jul 13 20:10:36 2017] [D] [11929] cache-action for [mypublish.com/en/home.html]: CREATE

[Thu Jul 13 20:10:36 2017] [D] [11929] Connected to backend 0 (publish:4503)

[Thu Jul 13 20:10:36 2017] [D] [11929] Adding request header: user-agent

[Thu Jul 13 20:10:36 2017] [D] [11929] Adding request header: accept-encoding

[Thu Jul 13 20:10:36 2017] [D] [11929] Adding request header: accept-language

[Thu Jul 13 20:10:36 2017] [D] [11929] Adding request header: accept

[Thu Jul 13 20:10:36 2017] [D] [11929] Adding request header: host

[Thu Jul 13 20:10:36 2017] [D] [11929] Adding request header: cookie

[Thu Jul 13 20:10:36 2017] [D] [11929] Adding request header: REMOTE_USER

[Thu Jul 13 20:10:36 2017] [D] [11929] Adding request header: Via

[Thu Jul 13 20:10:36 2017] [D] [11929] Adding request header: X-Forwarded-For

[Thu Jul 13 20:10:36 2017] [D] [11929] Adding request header: Server-Agent

[Thu Jul 13 20:10:42 2017] [D] [25021] Unable to parse response: Premature end in HTTP response, state = 0

[Thu Jul 13 20:10:42 2017] [D] [25021] socket error detected

[Thu Jul 13 20:10:42 2017] [D] [25021] initializing retry, closing socket (bogus %p

After notice the error above on Dispatcher I have logged on Publish server and the AEM service were up but apparently freeze so I restarted the server and it started to run just fine.

It's an AEM 6.2 + SP2 CFP7 running on centOS.

I haven't found anything about that kind of behavior and  I really appreciate any help or clue, Thanks.