Having NginX as a front end server.
Need to write (or guide how to) plugin that after the header is read it transfers control to a piece of our code. Based on our processing the plugin either returns to the client with an error messages or keeps reading the message and transfers control to our backend server (Ruby thin or unicorn in this case)
The message in this case is a binary file that needs to be written to a temporary directory.
Please quote for time and cost