The proxy is addressed with https and some of the backends are http. For the backends that do correct location headers and serve http, ProxyPreserveHost sends the host to the backend with http-protocol, the backend returns redirect location: http://www.somehost.com/somepath which isn't available by http. Using ProxyPassReverse for these locations doesn't work because the location does not contain the proxy's address but the external address. Kind regards, Spil On 15/09/06, Joshua Slive <joshua@xxxxxxxx> wrote:
On 9/15/06, Spil Oss <spil.oss@xxxxxxxxxxxxxx> wrote: > I'm trying to modify the "Host" request header for a URL that is > subject to proxying, but that doesn't seem to work. Setting > ProxyPreserveHost On does work, but breaks other parts of the > configuration. > > LoadModule rewrite_module modules/mod_rewrite.so > LoadModule headers_module modules/mod_headers.so > > RewriteEngine On > > RequestHeader set Host www.somehost.com > > RewriteRule /cd4(.*) http://www.backend1:8080/cd4$1 [P] > > result between Apache en backend > GET /cd4/survey.htm HTTP/1.1\r\n > Host: www.backend.com:8080\r\n > > Is there something that I'm overlooking? (processing order of modules?) I don't believe Host can be overridden. It is set just before the request. Why doesn't ProxyPreserveHost work for you? The alternative is to monkey with name resolution on the reverse proxy so that www.somehost.com maps to the IP of www.backend1 and then use www.somehost.com in your RewriteRule. Joshua.
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