Hi all on users@xxxxxxxxxxxxxxxx
Can httpd _use_ (not just _be_) a proxy, cascading to a 2nd proxy on a gate ?
(Not just the common case of httpd serving as a proxy for down stream clients,
though I need that too on same httpd, I already have that part working)
I want to get httpd on an internal host to serve as a proxy to a
USB tethered android (which it is already doing), + to pass requests
over ethernet LAN to a 2nd proxy on a LAN gateway.
This may seem unusual, here's the reason:
An android is tethered (IP over USB) to a FreeBSD PC laptop,
Orweb browser on Android allows use of a proxy, FreeBSD
laptop runs apache 2.2.29 httpd (listening on the USB IP)
with httpd proxy enabled & PC allows android to reach various httpd PCs
on local LAN of the PC.
I now want to tell the httpd on the PC interfacing the android,
to pass android requests to a 2nd httpd running on the gateway host,
to reach the internet.
Why ? Why dont I just configure the FreeBSD PC to bridge packets
from USB to LAN ethernet, & on to LAN gate ?
- I may later want a firewall on the laptop ( to protect LAN from lots of
untrusted android binaries, + android WLAN & SIM interfaces).
- Pragmaticaly , I've tried & failed to create a bridge,
I think the FreeBSD PC side is OK:
/etc/rc.conf gateway_enable="YES" +
sysctl net.inet.ip.forwarding=1
But Android rejects syntaxes such as
route add default 192.168.42.139
route add default gw 192.168.42.139
route add default gw 192.168.42.139 dev eth0
& no manuals, & I'm new to Android (but familiar with Apache & FreeBSD)
If httpd wont use a proxy, maybe I'll try packet diversion
via FreeBSD's ipfw, but I'm hoping Apache httpd can use a proxy ?
I've read
http://httpd.apache.org/docs/2.2/urlmapping.html#proxy
& contemplated nasty cludges eg:
1st httpd on PC connected to android:
<VirtualHost *>
ServerName play.google.com
Redirect temp /store/apps http://gate/playgoogle
2nd httpd on LAN gate:
Redirect temp /playgoogle http://play.google.com/store/apps
But it would be Ugly & wouldnt work for other URLs, eg when android map apps
go other places to load maps etc.
Maybe there's some clever mapping with
http://httpd.apache.org/docs/2.2/rewrite/
1st httpd to be receive request
http://domain/url_under_domain
& emit
http://gate/indirect_trigger/domain/url_under_domain
& 2nd=gate to redirect to
http://domain/url_under_domain
Ideas / suggestions please ?
Cheers,
Julian
--
Julian Stacey, BSD Linux Unix C Sys Eng Consultant Munich http://berklix.com
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