[squid-users] Guidance needed. Issues with WPAD and Firefox

[Erick Perez - Quadrian Enterprises]

Hi, maybe somebody here experienced the same issues while working with
WPAD files.

I have a working Centos 7.6/SQUID v4.8 that works as expected.
It works as long as I manually configure the proxy in the network
settings of each workstation (windows) firefox browser 69.0.1 (64bit)
and the same behavior with IE and Chrome.

if I open http://squid_fqdn/wpad.dat the file gets downloaded and has
all the info.
apache logs show me the client is properly connecting and requesting the file.

the wpad.dat has two lines
#
if (isPlainHostName(host)) return "DIRECT";
return "PROXY squid_fqdn:8080";
#

However, the moment I switch to using WPAD, the browsers stop working,
and I see nothing on the squid logs. So it seems it is a browser issue
regarding the WPAD.
Has anyone here knows in firefox what a PR_END_OF_FILE_ERROR   means?

FWIW: I'm not using SSL bump, not caching anything and only using:
#acl CONNECT method CONNECT
my squid is only used for allowing access to specific domains.

thanks for your help,




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Erick Perez