Traccar and Squid Proxy

Hi,
I would like to use squid proxy with Traccar and OpenStreetMap to cache the tiles for LAN users.
This is the SQUID configuration:

# port
http_port 443 act-as-origin
# parent cache
cache_peer tile.openstreetmap.org parent 443 0 no-query no-digest originserver name=osmTiles forceddomain=tile.openstreetmap.org

# lan segment
acl lab src 192.168.50.0/24
http_access allow lab
http_access deny all

# memory configuration
cache_mem 1024 MB
maximum_object_size_in_memory 512 KB
cache_dir aufs /var/spool/squid 1024 16 256
refresh_pattern -i \.(gif|png|jpg|jpeg|ico)$ 3600 90% 302400

# log time format
logformat combined %>a %[ui %[un [%tl] "%rm %ru HTTP/%rv" %>Hs %<st "%{Referer}>h" "%{User-Agent}>h" %Ss:%Sh
logformat custom %tl.%03tu %>a %Ss/%03>Hs %<st %rm %ru %[un %Sh/%<a %mt
access_log daemon:/var/log/squid/access.log combined

And when I insert this to the Traccar's custom map URL, it doesnt pull the tiles anymore:

192.168.50.101:3128 https://a.tile.openstreetmap.org/{z}/{x}/{y}.png

This test works properly when I pull manually a tile from the squid:

curl -I 192.168.50.101:3128 https://www.openstreetmap.org/#map=8/47.184/19.509

Do you have any idea what I am missing?

I'm confused why you're testing completely different tile URL.

ok, I changed:

curl -I 192.168.50.101:3128 https://a.tile.openstreetmap.org/9/286/187.png

It is successful.
So do you have any idea how to get Traccar to use my Squid Proxy?

What's the error? Provide a screenshot.

LOL. The error is that the map is empty.

I'm obviously talking about the error you see in the browser developer tools.

The error is: Web Socket Connection Error

This is what I have inserted into Traccar's custom map field:

192.168.50.101:3128 https://a.tile.openstreetmap.org/{z}/{x}/{y}.png

if I test it like this:

curl -I 192.168.50.101:3128 https://a.tile.openstreetmap.org/9/286/187.png

It works, I downloaded that tile png through the Squid Proxy Server

That's not a URL, so it obviously won't work.

ok, anyway, is there a way to convince Traccar to pull the tiles from my local proxy?
I installed the 6.0 version Traccar on my laboratory laptop, and I see that a lot of map servers are in red colors.
I would like to use OpenStreetMap but cached with a help of my Squid server

If you can configure it to be a proper HTTP proxy, then it should work.

Is there a directive in the Traccar xml config file, that is used for a properly configured HTTP Proxy? Thanks.

What? It doesn't require any configuration in Traccar.

ok, thanks.

Then I think the proxy settings should be set in the OS level, this way Traccar wont know about it.