[squid-users] assertion failed: comm.cc:185: "fd_table[conn->fd].halfClosedReader != NULL"

Hi all,

we have two squid servers on a large enterprise LAN for caching internet
traffic.
we currently use squid 3.3.9 with these (relevant?) settings:

pipeline_prefetch on
shutdown_lifetime 1 second

## Cache Settings ##
cache_dir diskd /squid/cache/active 51200 20 512 Q1=288 Q2=256
cache_mem 8192 MB
minimum_object_size 0 KB
maximum_object_size 50 MB
maximum_object_size_in_memory 1 MB
memory_cache_mode disk
store_dir_select_algorithm least-load
cache_swap_low 94
cache_swap_high 95

max_filedescriptors 65536

## Networking ##
http_port 8080

## USE ufdbGuard ##
url_rewrite_program /usr/local/ufdbguard/bin/ufdbgclient -l
/usr/local/ufdbguard/logs
url_rewrite_children 50

we encountered the error:
*assertion failed: comm.cc:185: "fd_table[conn->fd].halfClosedReader !=
NULL"*
on cache.log file and the squid server stopped working without accepting any
connection.

can you please help us with this error?

many thanks,

Enrico

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