[Twisted-web] mod_rewrite while persisting client ips

[Seun Osewa]

I've been searching for a potential solution to this 'loss of client
ip' problem for a long time.


On Wed, 20 Oct 2004 10:34:17 +0300 (EEST), Miika Keskinen <weeti at usr.fi> wrote:
> 
> Hi there.
> 
> I'm writing to the list in case someone finds this useful, I include short
> ProxyIPResource-'hack' and corresponding rewriterule to set
> request.client.host correctly :)
> 
> here it goes:
> 
> --snip--
> 
> from twisted.application import service, internet
> 
> from nevow import rend, loaders, appserver, vhost, inevow
> from nevow import tags as T
> 
> """
> Example apache configuration
> 
> NameVirtualHost *
> 
> <VirtualHost *>
>         RewriteEngine        on
>         RewriteRule (.*)/ http://localhost:8080/proxyip/%{REMOTE_HOST}/vhost/http/test.com/$1 [P]
>         ServerName test.com
> </VirtualHost>
> 
> """
> 
> class ProxyIPResource:
>     __implements__ = inevow.IResource,
> 
>     def putChild(self, child, res):
>         setattr(self, 'child_%s' % (child,), res)
> 
>     def locateChild(self, ctx, segments):
>         if len(segments) < 1:
>             return rend.NotFound
> 
>         elif "child_%s" % (segments[0],) in self.__dict__:
>             return self.__dict__['child_%s' % (segments[0],)], segments[1:]
> 
>         else:
>             request = inevow.IRequest(ctx)
>             request.client.host = segments[0]
> 
>             prefixLen = len('/'+'/'.join(request.prepath)+'/'+'/'.join(segments[:1]))
>             request.path = '/'+'/'.join(segments[1:])
>             request.uri = request.uri[prefixLen:]
>             request.prepath = request.prepath[2:]
>             return self, segments[1:]
> 
> class Simple(rend.Page):
>     addSlash = True
>     docFactory = loaders.stan(
>             T.html[
>                 T.body[
>                     T.h1["hello"]
>                 ]
>             ])
> 
> application = service.Application("Simple")
> 
> res = Simple()
> 
> vResource = vhost.VHostMonsterResource()
> pResource = ProxyIPResource()
> 
> res.putChild('proxyip', pResource)
> pResource.putChild('vhost', vResource)
> 
> internet.TCPServer(8080,
> appserver.NevowSite(res)).setServiceParent(application)
> 
> --snip--
> 
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