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List:       tomcat-user
Subject:    Re: Redirecting a naked domain to sub domain
From:       Simon Funnell <simonfunnell () gmail ! com>
Date:       2019-08-15 23:40:01
Message-ID: CACpCLtb=d8=b0Fv2EuHdtsrADJEqRc3yHMZRMvfEg=g3gNAjkg () mail ! gmail ! com
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On Thu, 15 Aug 2019 at 23:30, Chris Cheshire <yahoonomas@gmail.com> wrote:

> On Thu, Aug 15, 2019 at 2:54 PM Simon Funnell <simonfunnell@gmail.com>
> wrote:
> >
> > On Thu, 15 Aug 2019 at 01:00, Chris Cheshire <yahoonomas@gmail.com>
> wrote:
> >
> > > On Wed, Aug 14, 2019 at 5:18 PM Simon Funnell <simonfunnell@gmail.com>
> > > wrote:
> > > >
> > > > On Tue, 6 Aug 2019 at 14:33, John Larsen <john.larsen@javapipe.com>
> > > wrote:
> > > >
> > > > > I usually handle the redirect on the webserver side and set the
> alias
> > > in
> > > > > server.xml to the subdomain.
> > > > >
> > > > > John Larsen
> > > > >
> > > > >
> > > > >
> > > > I have now successfully loaded the rewrite valve in the application
> > > > context.xml but I am getting the following error on start up:
> > > > java.util.regex.PatternSyntaxException
> > > >
> > > > This is the rewrite.config file:
> > > >
> > > > RewriteCond %{HTTP_HOST} !^(.*)\.domain\.org\ [NC]
> > > > RewriteRule ^(.*)$ https://www.domain.org/$1 [R=301,L]
> > > >
> > > > It looks like the first line is an error and I don't know enough
> about
> > > > regex to fix it.
> > > >
> > > > Any help is great thanks.
> > > >
> > > >
> > >
> > > The \ after .org is misplaced (it's trying to quote the space
> > > following it), remove that and try again
> > >
> > > Chris
> > >
> > >
> > > Chris
> > >
> > >
> > It kind of works now but when it redirects it adds two slashes to the end
> > of domain:
> >
> > https://www.domain.org//
> >
> > which is causing an internal server error for the URL not br normalised
> >
> >
> >
>
> That's odd. I do the inverse of that to remove www and have a naked
> domain, but using mod_rewrite in httpd. The rewrite rule is otherwise
> the same. I thought the syntax was the same. Maybe something inside
> tomcat is forcing a / at the end of the domain for canonicalization,
> and then the extra / is getting added by the rewrite valve rule?
>
> Looking at a different server where I force the www, I have this instead :
>
> RewriteRule ^/(.*)         https://www.domain.com%{REQUEST_URI} [L,R=301]
>

This works properly, thanks!


>
> You can try this instead. It won't be putting a / in there unless it
> is already present in the uri passed (unlike the other version where a
> / will be appended even if the uri is blank)
>
> HTH,
>
> Chris
>
>
> > > >
> > > > >
> > >
> > > > > On Tue, Aug 6, 2019 at 7:11 AM Simon Funnell <
> simonfunnell@gmail.com>
> > > > > wrote:
> > > > >
> > > > > > Hi,
> > > > > >
> > > > > > I was going to do a redirect at my dns provider from the naked
> > > domain to
> > > > > > the www subdomain. Unfortunatly this doesn't really work if it is
> > > over
> > > > > > https so I am going to have to do the redirect at the host
> level. My
> > > > > > question is, is this what the rewrite valve is for? I was going
> to
> > > set up
> > > > > > two hosts, one for the naked domain and one for the subdomain
> with a
> > > set
> > > > > up
> > > > > > like the following:
> > > > > >
> > > > > >  <Host name="domain.org"  appBase="webapps2"
> > > > > >             unpackWARs="true" autoDeploy="true">
> > > > > >      <!-- Insert rewrite valve here -->
> > > > > >       </Host>
> > > > > >
> > > > > >         <Host name="www.domain.org"  appBase="webapps"
> > > > > >             unpackWARs="true" autoDeploy="true">
> > > > > >
> > > > > >         <!-- Access log processes all example.
> > > > > >              Documentation at: /docs/config/valve.html
> > > > > >              Note: The pattern used is equivalent to using
> > > > > pattern="common"
> > > > > > -->
> > > > > >         <Valve
> className="org.apache.catalina.valves.AccessLogValve"
> > > > > > directory="logs"
> > > > > >                prefix="localhost_access_log" suffix=".txt"
> > > > > >                pattern="%h %l %u %t &quot;%r&quot; %s %b" />
> > > > > >
> > > > > >       </Host>
> > > > > >
> > > > > > If this is what the rewrite valve is for, how do I configure it
> to
> > > > > redirect
> > > > > > to the subdomain apart from when it accesses the .well-known
> folder
> > > > > (which
> > > > > > is needed to get a letsencrypt certificate).
> > > > > >
> > > > > > If the rewrite valve is not the correct way to do this do I just
> > > deploy a
> > > > > > catch all servlet or a filter to do the redirect instead?
> > > > > >
> > > > > > Thanks,
> > > > > >
> > > > > > Simon
> > > > > >
> > > > >
> > >
> > > ---------------------------------------------------------------------
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> > >
> > >
>
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