https://ml-archives.squid-cache.org/squid-users/2019-November/021235.html
[squid-users] helperHandleRead: unexpected read
squidusersunexpectedread
https://ml-archives.squid-cache.org/squid-users/2015-October/006039.html
[squid-users] Frequent messages from helperHandleRead
squidusersfrequentmessages