Proxying to 2 backends with a if

Hi,

Not sure if the mailing list is more popular than the forums, so I ask
here
to…
I setup two servers, each proxying to a different backend, one http and
one
fcgi, and it mostly worked.
Now, I am trying to setup one server that would proxy to the two
different
backends based on the presence of args or a header…
So I merged both configurations, but I have some issues like many
configuration
parameters do not work inside a ‘if’.
I moved most outside the if, but I am not sure of the effects.
And the headers don’t seem to be proxied to the fcgi backend…
Could some knowledgeable people offer some advice on how to fix my
configuration
file?
You can see the trimed configuration here:
http://forum.nginx.org/read.php?11,166892
Basicaly I want to: “if (args or header) then pass to fcgi, else pass to
http
backend”

Thanks,
JD