Sub-request using Parent Request Body

[Roman Vasilyev]

On 01/05/2011 09:02 PM, agentzh wrote:
> On Wed, Jan 5, 2011 at 8:20 AM, Roman Vasilyev<roman at anchorfree.com>  wrote:
>    
>> Let me show one variant of nginx.conf's:
>>   location / {
>>     include proxy.conf;
>>     eval_subrequest_in_memory off;
>>     eval_override_content_type text/plain;
>>     eval $res {
>>       include spam_fastcgi.conf;
>>       if ( $request_method = POST) {
>>         fastcgi_pass   unix:/var/run/nginx/cgiwrap-dispatch.sock;
>>       }
>>     }
>>    if ( $res = SPAM) {
>>      rewrite ^ /terms-of-use.html redirect;
>>    }
>>   }
>>      
> Please try the following:
>
>      location = /check-spam {
>          internal;
>
>          include spam_fastcgi.conf;
>          fastcgi_pass unix:/var/run/nginx/cgiwrap-dispatch.sock;
>      }
>
>      location / {
>          client_max_body_size 100k;
>          client_body_buffer_size 100k;
>
>          lua_need_request_body on;
>
>          rewrite_by_lua '
>    
Thank you for quick response, and I afraid of my stupid questions about 
embedded lua but :) :
1) I'm using current development nginx-0.9.3 (my internals need huge 
table ~350k domain records for 2 different nginx parameters) and doable 
in current version.
2) when I'm just including  *rewrite_by_lua* with simple return, I'm 
loosing all headers from parent cite, please help me with best solution 
for that.
3) why you prefer NDK to clear nginx environment?
>              if ngx.var.request_method ~= "POST" then
>                  return
>              end
>              local res = ngx.location.capture(
>                  "/check-spam",
>                  { method = "POST", body = ngx.var.request_body }
>              )
>              if res.body == "SPAM" then
>                  return ngx.redirect("/terms-of-use.html")
>              end
>          ';
>
>          # ... your normal fastcgi_pass/proxy_pass/etc settings
>          #   go here ...
>      }
>
> Please note that you need the git HEAD of the "master" branch of the
> ngx_lua git repos:
>
>       https://github.com/chaoslawful/lua-nginx-module
>
>    
>> I have some foreign spam analyzer which I'm running like fastcgi server
>> written in perl.
>> I tried to use $request_body as fastsgi_param arg, it was empty;
>> Wrote module which creates $post_body var in rewrite stage and with echo
>> $post_body it works, but on subrequest it gives empty body (I guess because
>> it not passing POST into subrequest)
>> maybe somebody have any ideas how to realize it other way, or may be how to
>> get POST in subrequest?
>>
>>      
> If you have further issues, feel free to report here ;)
>
> Happy nginx.conf hacking!
> -agentzh
>