[Pound Mailing List] SSL passthru with alternate source port without RewriteLocation possible

Hi list,

we have following logical constellation with two wan-ports in use:

<Provider A + Provider B => Router>----<Pound>---<Webserver>

Here is a simplified example for our situation:

(test1|test2).domain.(com|de) with official IP (Provider A and B)
(test1|test2).domain.pwd with private  IP (Pound) => 192.168.0.99
(test1|test2).domain.hst with private  IP (Webserver) => 192.168.0.100

The first variant (test1) is to solve:
* Pound changed https to webserver http
* Pound passthru the http to webservers http

The second variant (test2) is to solve:
* Pound passthru the https to webservers https
* Pound passthru the http to webservers http

The Webserver redirect automatic http requests if https is required and
vice versa...

Our problem is "A" with a request, that must be http as final
request/result:

A. If we request from outside then following happens:

curl -I -k https://test1.domain.com/
> HTTP/1.1 302 Moved Temporarily
> ...
> Location: https://test1.domain.com/

B. If we request from pound-(in)side then following happens:

curl -I -k https://test1.domain.pwd/
> HTTP/1.1 302 Moved Temporarily
> ...
> Location: http://test1.domain.pwd/

C. If we request the webserver direct:

curl -I -k https://test1.domain.hst/
> HTTP/1.1 302 Moved Temporarily
> ...
> Location: http://test1.domain.hst/

I think, B and C do it right, but A is mystic ... why rewriting the
location???
It is the same as B, the only difference ist the port number!
Have you any ideas?

Here is my simplified configuration

### pound.cfg (with the relevant parts)
###########################################################
#   ( .pwd ( default )     -> 192.168.0.1:80/443 <--> 192.168.0.99:80/443
#   ( .com ( Provider A )  -> 192.168.0.1:80/443 <--> 192.168.0.99:8081/8444

#   ( .de  ( Provider B )  -> 192.168.0.1:80/443 <--> 192.168.0.99:8082/8445

#
# ( The special ports for HTTP and HTTPS 8081-8082 and 8444-8445 are
routerkonfiguration specific! )
##########################################################################################

### ( default http ) ###
ListenHTTP
    Address 192.168.100.99
    Port 80
    RewriteLocation 0
    Service
        HeadRequire "Host: test(1|2)\.domain\.(...?)"
        BackEnd
            Address 192.168.100.111
            Port    80
        End
    End
#   ...
End

### ( Provider A http ) ###
ListenHTTP
    Address 192.168.0.99
    Port 8081
    RewriteLocation 0
    Service
        HeadRequire "Host: test(1|2)\.domain\.(...?)"
        BackEnd
            Address 192.168.0.100
            Port    80
        End
    End
#   ...
End

# ...

### ( default https ) ###
ListenHTTPS
    Address 192.168.0.99
    Port    443
    Cert    "/etc/pki/tls/certs/pound.pem"
Service
        HeadRequire "Host: test2\.domain\.(...?)"
        BackEnd
            Address 192.168.0.100
            Port    443
            HTTPS
        End
    End

    Service
        HeadRequire "Host: test1\.domain\.(...?)"
        BackEnd
            Address 192.168.0.100
            Port    80
        End
    End
#   ...
End

### ( Provider A https ) ###
ListenHTTPS
    Address 192.168.0.99
    Port    8444
    Cert    "/etc/pki/tls/certs/pound.pem"
Service
        HeadRequire "Host: test2\.domain\.(...?)"
        BackEnd
            Address 192.168.0.100
            Port    443
            HTTPS
        End
    End

    Service
        HeadRequire "Host: test1\.domain\.(...?)"
        BackEnd
            Address 192.168.0.100
            Port    80
        End
    End
#   ...
End

# ...