[squid-users] Strange error to load http web pages in parents servers.

[Darvin Rivera Aguilar]

In all Machines

OS: Debian
Version: 9.5
Squid Cache: Version 3.5.23

I have one private ip address for public squid (10.20.0.183) and two
parents squid: one for facebook and other for *.ch domain

                                       ----> Parent1 (10.20.0.41) (Only Facebook)
                                      |
Client -> Public Squid (10.20.0.183) -----> All other traffic
                                      |
                                       ----> Parent2 (10.20.0.42) (Only *.ch domain)

Parent1 and parent2 configuration are the same.


The Problem:

Browser Url: http://films.server.ch/Ingles/Baby Daddy/

Client Error:

ERROR
The requested URL could not be retrieved

The following error was encountered while trying to retrieve the URL:
/Ingles/Baby%20Daddy/

     Invalid URL

Some aspect of the requested URL is incorrect.

Some possible problems are:

     Missing or incorrect access protocol (should be "http://" or similar)

     Missing hostname

     Illegal double-escape in the URL-Path

     Illegal character in hostname; underscores are not allowed.

Your cache administrator is webmaster.


Log Public Squid (10.20.0.183)
1531925462.144    525 10.20.1.12 TCP_MISS/400 3875 GET http://films.server.ch/Ingles/Baby%20Daddy/ username FIRSTUP_PARENT/10.20.0.42 text/html

Log Squid Parrent2 (10.520.0.42)
1531928082.425      0 10.20.0.183 TAG_NONE/400 3586 GET /Ingles/Baby%20Daddy/ - HIER_NONE/- text/html


Nota: I user parent1 for facebook and never give this error. Facebook
use https and the error is only in parent2 with http.

How the client solve this error:
When i push F5 in browser the the page reload with out problem,
sometimes i need to push 5 or 8 times F5 to page reload.

Parent2 Full config:

http_port 3128
httpd_suppress_version_string on
visible_hostname parent2.localhost
dns_nameservers 10.20.0.61
acl proxy src 0.20.0.183/32
http_access allow proxy
http_access deny all
cache_access_log /var/log/squid/access.log

Public Squid Basic config

http_port 10.20.0.183:3128
http_port 127.0.0.1:3128
httpd_suppress_version_string on

#====================================================================================
# TAG: Recommended minimum configuration
#====================================================================================
acl port_80 port 80
acl port_443 port 443

acl Safe_method method CONNECT GET HEAD POST
acl CONNECT     method CONNECT

http_access allow manager localhost
http_access deny manager
http_access deny !Safe_ports
http_access deny !Safe_method
http_access deny CONNECT !SSL_ports

#====================================================================================
# TAG: PARENT
#====================================================================================
acl redir_facebook      dstdom_regex    -i "/etc/squid/acl/cache_peer_facebook"
acl db_domain           dstdom_regex    -i "/etc/squid/acl/cache_peer_domain"

cache_peer 10.20.0.41 parent 3128 0 default
cache_peer 10.20.0.42 parent 3128 0 default

cache_peer_access 10.20.0.41 allow redir_facebook
cache_peer_access 10.20.0.42 allow db_domain

never_direct allow redir_facebook
never_direct allow db_domain