Handler invokation after upstream server being picked

Hi,

I am writing a module that needs to add/change the HTTP Authorization
server for an upstream request.

Since I am using a signature based authentication scheme where the
signature base string includes the request host and port the header can
only be added after the upstream module has determined which server to
send the request to (e.g. after applying round-robin).

Is it possible to hook my module into that ‘phase’ and if so - what is
the preferred way to do that?

I saw that I at least can access the target host and port set by the
proxy module by reading the proxy module variables. However, that (of
course) does only give the server group name to be used by the upstream
module in the next step.

Jan

Hello!

On Fri, Oct 25, 2013 at 12:30:34PM +0200, Jan A. wrote:

Is it possible to hook my module into that ‘phase’ and if so -
what is the preferred way to do that?

I saw that I at least can access the target host and port set by
the proxy module by reading the proxy module variables. However,
that (of course) does only give the server group name to be used
by the upstream module in the next step.

A request to an upstream is created once, before a particular
server is known, and the same request is used for requests to all
upstream servers. That is, what you are trying to do isn’t
something currently possible.


Maxim D.
http://nginx.org/en/donation.html

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