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

[Erick Perez - Quadrian Enterprises]

On Thu, Oct 3, 2019 at 12:45 AM Amos Jeffries <squid3 at treenet.co.nz> wrote:
>
> On 3/10/19 5:55 pm, Erick Perez - Quadrian Enterprises wrote:
> > On Wed, Oct 2, 2019 at 10:47 PM Erick Perez - Quadrian Enterprises wrote:
> >>
> >> 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
> >
>
> That is one problem. The PAC file is supposed to define a fully formed
> function like so:
>
> function FindProxyForURL(url, host) {
>   if (isPlainHostName(host)) return "DIRECT";
>     return "PROXY squid_fqdn:8080";}
>
> You also need to ensure the web server is producing the HTTP response
> with a "Content-Type: application/x-ns-proxy-autoconfig" header or it
> will fail.
>
> see <http://findproxyforurl.com/> for more info about WPAD/PAC.
>
> Amos
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So sorry Amos,
actually the function is implemented properly. I just didnt paste it
And yes, wireshark shows me HTTP/1.1 200 OK (application/x-ns-proxy-autoconfig)
I followed this document: https://www.giantstride.eu/proxy-autodiscovery/
I created wpad CNAME in DNS that points to squidfqdn
I created option 252 in DHCP
and also unblocked wpad block in DNS according to same document
https://www.giantstride.eu/proxy-autodiscovery/

-- 

---------------------
Erick Perez