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From "Andrew J. Leer" <leean...@hotmail.com>
Subject [users@httpd] Rewriting Redirect 302 headers so that redirection goes through the proxy?
Date Mon, 22 Feb 2010 15:51:24 GMT
I am currently attempting to use my.domain.com as a proxy through which
users of my site access a business partners site:
http://domain.to_proxy_through_my_domain.com/

below is the configuration I have so far:

>#Load Files needed for proxy_html_module
>
>
>#Proxy Support
>LoadModule  proxy_module         modules/mod_proxy.so
>
>#HTTP Support
>LoadModule  proxy_http_module    modules/mod_proxy_http.so
>LoadModule  headers_module       modules/mod_headers.so
>LoadModule  deflate_module       modules/mod_deflate.so
>#LoadFile "C://www/gra/mod_proxy_html/zlib1.dll"
>#LoadFile "C://www/gra/mod_proxy_html/iconv.dll"
>
># for proxy_html_module
>LoadFile "C://www/gra/mod_proxy_html/libxml2.dll"

># rewrites HMTL URLs for proxied pages
>LoadModule proxy_html_module     modules/mod_proxy_html.so

># Turn off forward proxying
>ProxyRequests Off

><Proxy *>
> Order deny,allow
>  Allow from all
></Proxy>

># Forward /my-gateway to http://domain.to_proxy_through_my_domain.com/
>ProxyPass /my-gateway/ http://domain.to_proxy_through_my_domain.com/
>
><Location /my-gateway/>
>  # ReWrite response headers
>  ProxyPassReverse /
>  # Enable link rewriting
>  SetOutputFilter proxy-html
>  # Apparently compression causes problems in mod_proxy_html
>  RequestHeader unset Accept-Encoding
>
>  ProxyHTMLExtended On
>  ProxyHTMLURLMap .* http://my.domain.com/my-gateway/$1 Rihe
>
>  ProxyHTMLLinks	form		action
></Location>


Thus far it works until the point at which the user logs in to my
business partners domain
(http://domain.to_proxy_through_my_domain.com)


I used fiddler to track what happens during the request where the user logs in:

1. the browser makes the request to login:

>Request:

>POST /my-gateway/default.asp?do=login HTTP/1.1
>Accept: image/gif, image/jpeg, image/pjpeg, application/x-ms-application, application/vnd.ms-xpsdocument,
application/xaml+xml, application/x-ms-xbap, application/vnd.ms-excel, application/vnd.ms-powerpoint,
application/msword, application/x-shockwave-flash, */*
>
>Referer: http://my.domain.com/my-gateway/
>Accept-Language: en-us
>User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; WOW64; Trident/4.0; SLCC1;
.NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.5.30729; .NET CLR 3.0.30729)
>Content-Type: application/x-www-form-urlencoded
>Accept-Encoding: gzip, deflate
>Host: my.domain.com
>Content-Length: 47
>Connection: Keep-Alive
>Pragma: no-cache
>Cookie: sessionguid=%7B0DC785C5%2DE137%2D4514%2D826E%2D959A9D831E19%7D; ASPSESSIONIDASQQBQSA=NEMKJJBCMHMAENLDDOGKBNDN

>username=test&password=testpassword&Submit=Log+In


The response that the user gets back redirects them directly to my
business partners website, instead of through the proxy that I've
setup on my domain:

>Response:
>
>HTTP/1.1 302 Object moved
>Date: Mon, 22 Feb 2010 14:02:02 GMT
>Server: Microsoft-IIS/5.0
>Location: http://domain.to_proxy_through_my_domain.com/default.asp?SessionGUID={02F9DB52-1907-48DF-BE08-E61777D6B192}&do=products
>Content-Type: text/html;charset=utf-8
>Cache-control: private
>Set-Cookie: sessionguid=%7B02F9DB52%2D1907%2D48DF%2DBE08%2DE61777D6B192%7D; expires=Tue,
22-Feb-2011 06:00:00 GMT; path=/
>Content-Length: 235
>Keep-Alive: timeout=5, max=100
>Connection: Keep-Alive

><html><head><title>Object moved</title></head><body><h1>Object
Moved</h1>This object may be found <a href="http://domain.to_proxy_through_my_domain.com/default.asp?SessionGUID={02F9DB52-1907-48DF-BE08-E61777D6B192}&amp;do=products">here</a>.</body></html>

How do I rewrite the headers so that the "Location: " header above reads
>"http://my.domain.com/my-gateway/default.asp?SessionGUID={02F9DB52-1907-48DF-BE08-E61777D6B192}&do=products"
instead of
>"http://domain.to_proxy_through_my_domain.com/default.asp?SessionGUID={02F9DB52-1907-48DF-BE08-E61777D6B192}&do=products"

Thank you,
   Andrew J. Leer

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