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How to write SCRIPT_URI in the header in Apache?

I have a setup where I have these servers:

load balancer -> Apache -> Tomcat

I would like Apache to write down the URL that the client used in the header, so I can read as soon as I click on tomcat.

I tried to use mod_rewrite and mod_headers, so I do this, but no luck. if I look at http://httpd.apache.org/docs/2.0/mod/mod_rewrite.html , then it seems clear that I need the SCRIPT_URI variable:

SCRIPT_URI=http://en1.engelschall.com/u/rse/

I also looked at this http://www.askapache.com/htaccess/crazy-advanced-mod_rewrite-tutorial.html to figure out how to write headings and have some success, but not enough.

I have php installed on the apache server, and if I look at phpinfo (), I see that SCRIPT_URI is and has a reasonable value.

I just can't get him to write it in the header. Here is a simplified version of what I did:

#load modules
LoadModule rewrite_module modules/mod_rewrite.so
LoadModule headers_module modules/mod_headers.so
#Get the original uri used
RewriteRule .* - [E=INFO_SCRIPT_URI:%{SCRIPT_URI},NE]
RequestHeader set x-orig-uri "%{INFO_SCRIPT_URI}e"

I tried several other options, both on windows, cygwin, and ubuntu linux

Any ideas?

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2 answers

I found a workaround myself, although this is not the simple and simple solution I wanted. I was able to get the individual parts and use them to create a complete URI:

<IfModule !rewrite_module>
    LoadModule rewrite_module modules/mod_rewrite.so
</IfModule>

<IfModule !headers_module>
    LoadModule headers_module modules/mod_headers.so
</IfModule>


<IfModule rewrite_module>
<IfModule headers_module>

####### INITIAL SETUP #########################
    RewriteEngine on

####### SET HEADERS #########################
    #get and set the host name
        RewriteRule .* - [E=INFO_HTTP_HOST:%{HTTP_HOST},NE]
        RequestHeader set x-orig-host "%{INFO_HTTP_HOST}e"


    #get and set the host port
        RewriteRule .* - [E=INFO_SERVER_PORT:%{SERVER_PORT},NE]
        RequestHeader set x-orig-port "%{INFO_SERVER_PORT}e"


    #If the uri starts with a slash and some alphanumerics, then make a 
    #group of that until the first non-alpha (ie. the next slash)
        RewriteCond %{REQUEST_URI} ^(/[\w-]+)
    #Save the content of the regex match group ( %1 ) in an environment variable
        RewriteRule .* - [E=INFO_REQUEST_CONTEXT:%1,NE]
    #Set a header with the content of the environment variable
        RequestHeader set x-orig-context "%{INFO_REQUEST_CONTEXT}e"


    #If the accept-header contains a number after ;version= then make a regex group of that number
        RewriteCond %{HTTP_ACCEPT} \+json;version=(\d+)$ 
    #Save the content of the regex match group ( %1 ) in an environment variable
        RewriteRule .* - [E=INFO_ACCEPT_VERSION:%1,NE]
    #Set a header with the content of the environment variable
        RequestHeader set x-orig-accept-version "%{INFO_ACCEPT_VERSION}e"


    #If the accept-header contains kasia2. followed by some letters, 
    #then make a regex group of those letters
        RewriteCond %{HTTP_ACCEPT} kasia2.(\w+).*
    #Save the content of the regex match group ( %1 ) in an environment variable
        RewriteRule .* - [E=INFO_ACCEPT_NAME:%1,NE]
    #Set a header with the content of the environment variable
        RequestHeader set x-orig-accept-name "%{INFO_ACCEPT_NAME}e"


    #If https is on ...
        RewriteCond %{HTTPS} on
    #...then set the protocol environment variable to "https"
        RewriteRule .* - [E=INFO_PROTOCOL:https,NE]
    #If https is off ...
        RewriteCond %{HTTPS} off
    #...then we assume it must be "http"
        RewriteRule .* - [E=INFO_PROTOCOL:http,NE]
    #Finally, set the protocol header
        RequestHeader set x-orig-protocol "%{INFO_PROTOCOL}e"


    #Get the request uri and set an environment variable
        RewriteRule .* - [E=INFO_REQUEST_URI:%{REQUEST_URI},NE]
    #Build the whole original url out of the available parts. SCRIPT_URI is always null, otherwise we could have used that.
        RequestHeader set x-orig-url "%{INFO_PROTOCOL}e://%{INFO_HTTP_HOST}e%{INFO_REQUEST_URI}e"
    #In addition make an url with only the host and context, for convenience
        RequestHeader set x-orig-url-base "%{INFO_PROTOCOL}e://%{INFO_HTTP_HOST}e%{INFO_REQUEST_CONTEXT}e"

</IfModule>
</IfModule>
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https://serverfault.com/questions/23470/setting-apache-environment-variable-on-mod-rewrite-rewrite-condition , different

<Location>

RewriteRule ^ - [E=FOO:set_by_rewrite_rule]
RequestHeader set x-foo-outside-location %{FOO}e

<Location  "/bla">
    RequestHeader set x-foo-in-location %{FOO}e
</Location>

,

x-foo-in-location='set_by_rewrite_rule'
x-foo-outside-location='(null)'

, null, <Location "/"> ( , )

, env - ... Go figure!

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