Raspberry Pi with nginx: Echo example gives 413 Request Entity Too Large on form submit about fastcgipp HOT 4 CLOSED

I did some printf debugging today. I see the spot in request.cpp where it calls the error handler. I put a printt() above that like this:

if(m_environment.postBuffer().size()+(bodyEnd-body)
                            > environment().contentLength)
                    {
                        printf("IN: postBuffer: %hu, environment().contentLength: %hu\n", 
                            m_environment.postBuffer().size()+(bodyEnd-body),
                            environment().contentLength
                        );
                        bigPostErrorHandler();

and saw this in my output

IN: postBuffer: 91, environment().contentLength: 0

I'm not sure what sets environment().contentLength but I'm looking into that.

I'm pretty sure this has something to do with my nginx fastcgi setup but have not worked it out yet. Any help is appreciated.

from fastcgipp.

Ah interesting. A few things might be happening. Either nginx is stripping the content-length header or the client isn't sending it at all. This code here is basically just rejecting badly formed POST queries. It saying "The client is trying to send us more data than it declared in it's content-length header".

from fastcgipp.

Ahhh. I see. Maybe I need to pass the content length in my nginx setup.

from fastcgipp.

That was it. I added CONTENT_TYPE and CONTENT_LENGTH to my fastcgi setup

  location /rtjambox {
    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
    fastcgi_param REQUEST_METHOD $request_method;
    fastcgi_param REQUEST_URI $uri;
    fastcgi_param QUERY_STRING $query_string;
    fastcgi_param CONTENT_TYPE    $content_type;
    fastcgi_param CONTENT_LENGTH  $content_length;
    fastcgi_pass unix:/tmp/rtjambox.sock;
  }

Thank you. for checking.

from fastcgipp.