Comment 10 for bug 1939678

There is an copy & paste bug in my Substitute it must be.

[...]
                Substitute "s|http://192.168.56.170:81|http://192.168.56.70|i"
[...]

And i investigate further on i grab some httpd versions i can get from

wget http://archive.apache.org/dist/httpd/httpd-2.4.39.tar.gz
wget http://archive.apache.org/dist/httpd/httpd-2.4.41.tar.gz
wget http://archive.apache.org/dist/httpd/httpd-2.4.51.tar.gz

And i diff mod_proxy_balancer.c from version to version for instance.

:~$ diff httpd-2.4.39/modules/proxy/mod_proxy_balancer.c httpd-2.4.41/modules/proxy/mod_proxy_balancer.c

In version 2.4.41 mod_proxy_balancer.c and in the further versions i found that peace of code. And it looks like that trigger the error.

:~$ vim mod_proxy_balancer.c
[...]
    /* Ignore parameters if this looks like XSRF */
    ref = apr_table_get(r->headers_in, "Referer");
    if (apr_table_elts(params)
        && (!ref || !safe_referer(r, ref))) {
        ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(10187)
                      "ignoring params in balancer-manager cross-site access");
        apr_table_clear(params);
    }
[...]

If i delete that and recompile than it looks like anything is working again with the proxy in front of the LB Manager. But i'am not a Developer and i don't know is that an good idea to delete that code. And mybe on different places happening other bad things.

Any suggestion is appreciated.

Thx Horst