Forward query string with ErrorDocument in apache

Question

I'm trying forward to another host when error occurs. I have this, and works:

<VirtualHost *:80>
    ServerName test.com.
    ServerAlias test.com

    ProxyPreserveHost On
    ProxyPass / http://127.0.0.1:8080/
    ProxyPassReverse /  http://127.0.0.1:8080/

    RewriteEngine on

    ErrorDocument 503 /503/

    RewriteCond %{REQUEST_URI} ^/503/$
    RewriteRule ^(.*)$ http://other.host.com/

</VirtualHost>

Now, when I have this URL: http://test.com/path/?param1=val1&param2=val2 and when 503 error ocurrs, I want redirect to new URL: http://other.host.com/path/?param1=val1&param2=val2.

It is possible forward /path/?param1=val1&param2=val2 to new host?

I have seen this and this, but it is not exactly my problem.

PS: I'm running a java application, not a php application

julp · Accepted Answer · 2016-06-30 17:23:28Z

6

Since Apache 2.4.13, ErrorDocument can also use expression, so:

ErrorDocument 503 http://other.host.com/%{REQUEST_URI}?%{QUERY_STRING}
ProxyErrorOverride on

answered Jun 30, 2016 at 17:23

julp

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1 Comment

Alberto Over a year ago

Thanks @julp, this works! I didn't add ProxyErrorOverride on and worked too. I have upgraded apache to 2.4.20. Thank you very much.

Lo Vega · Accepted Answer · 2020-07-29 07:10:58Z

0

Tested in shell script CGI and PHP on Apache 2.2

In shell script CGI, dump the /bin/env vars and grep REQUEST_URI,

In PHP, ret $_SERVER['REQUEST_URI']

This tip works for keep query string from httpd.conf settings redirected.

ErrorDocument 401 /errCode/401.html

answered Jul 29, 2020 at 7:10

Lo Vega

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