Enable redirect www to non-www and vice-versa #12

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1. pierreozoux commented on Sep 10, 2018

   

   pierreozoux

   on Sep 10, 2018

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   Yes, I know this part was never clear...
   There was never a clear concept from our users.
   If you have a good idea for that, please PR.

   Maybe:

   • default redirect naked domain to www
   • if there is a var REDIRECT_WWW, then do the other way around.

   What do you think?

   (I'll not have the time to implement it)
2. hgezim commented on Sep 13, 2018

   

   hgezim

   on Sep 13, 2018

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   @pierreozoux,

   I'll need to check if the domain listed in VIRTUAL_HOSTS is an eTLD+1 before we can start adding www to it. This go library does that: https://godoc.org/golang.org/x/net/publicsuffix

   Thoughts on how I might get this into templates/haproxy.cfg.tmpl?
3. pierreozoux commented on Sep 13, 2018

   

   pierreozoux

   on Sep 13, 2018

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   nope :/
4. hgezim commented on Mar 18, 2019

   

   hgezim

   on Mar 18, 2019

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   Here's what I have working:

   VIRTUAL_HOSTS can be set to single, command separated domains, or domains with redirection like so: "commerceowl.com=>www.commerceowl.com".

   This way it's quite explicit and no magic happens. Here's the relevant code:

   {{ range $host, $containers := groupByMulti $ "Env.VIRTUAL_HOST" "," }}
      {{ $redirect_parts := split $host "=>" }}
      {{ if (gt (len $redirect_parts) 1) }}
        {{ $host := index $redirect_parts 1 }}
        {{ $redirect_from := index $redirect_parts 0 }}
        redirect location https://{{ $host }} code 301 if !acme { hdr(host) -i {{ $redirect_from  }} }
        use_backend {{ $host}} if { hdr(host) -i {{ $host }} }
      {{else}}
        {{ $host := index $redirect_parts 0 }}
        use_backend {{ $host}} if { hdr(host) -i {{ $host }} }
      {{end}}
   {{end}}
   
   {{ range $host_array, $containers := groupByMulti $ "Env.VIRTUAL_HOST" "," }}
   {{ range $host := split $host_array "=>" }}
   backend {{ $host }}
     option http-server-close
     cookie SERVERID insert nocache indirect
     {{ range $container := $containers }}
       {{ $networkLen := len $container.Networks }}
       {{ if eq $networkLen 1 }}
         {{ $network := index $container.Networks 0 }}
     server Server {{ $network.IP }}:80 cookie Server
       {{ else }}
         {{ range $network := $container.Networks }}
           {{ if eq $network.Name "lb_web" }}
     server Server {{ $network.IP }}:80 cookie Server
           {{end}}
         {{end}}
       {{end}}
     {{end}}
   {{end}}
   {{end}}
   

   I'd create a pull request but I realized I'm behind and don't understand what the REVERSE_PROXY_FOR stuff does.
5. hgezim commented on Apr 9, 2019

   

   hgezim

   on Apr 9, 2019

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   @pierreozoux, thoughts on the above?