We want to transform a file which is being written to.

In other words,we want to send one request to NGINX server to download a file which is being written to. And we want to get the complete file finally. We read http/1.1 and knew that the "Transfer-Encoding: chunked " should be used.

But we don't know how to let NGINX know the file is not completed and use " Transfer-encoding: Chunked".

Please suggest us some ways .