How to pass fastcgi custom variables in C?

Hi, I would like to have the auth_request fastcgi auth server to send
some
custom variables to the fastcgi back-end server. For example, the Radius
server returned some parameters which the fastcgi auth server needs to
send
to the fastcgi back-end server.

locate / {
auth_request /auth;
fastcgi_pass ; <— would like this server to
see
the custom param variable
}

locate /auth {
fastcgi_param CUSTOM_PARAM custom_param;
fastcgi_pass ; <---- returns a custom param value to
be
used by the back-end server
}

Could someone give me a pointer on how to this in the nginx.conf and the
auth and back-end servers in C? I saw many examples for PHP but none for
C.

In the auth server app, I defined “int custom_param=100” for example,
and
would like the back-end server to see get this variable and value.
Thanks!

Posted at Nginx Forum:

On Wed, Jan 21, 2015 at 07:30:48PM -0500, nginxuser100 wrote:

Hi there,

Hi, I would like to have the auth_request fastcgi auth server to send some
custom variables to the fastcgi back-end server.

You have the nginx config to send a cookie from the auth_request server
to the fastcgi upstream, I think.

The same config pattern should work for anything else returned.

(set a variable based on what “auth” returns, then send that as a
fastcgi_param.)

Could someone give me a pointer on how to this in the nginx.conf and the
auth and back-end servers in C? I saw many examples for PHP but none for C.

The nginx conf should match what you already have; the rest is
presumably according to the http or fastcgi specs (there should be
nothing nginx-specific about it).

In the auth server app, I defined “int custom_param=100” for example, and
would like the back-end server to see get this variable and value. Thanks!

Return it as a http response header, just like you would for a
Set-Cookie:.

f

Francis D. [email protected]