Code a netcat bash script

I need a bash script that does the following:

1. Takes a url with a tar file.
2. Uses netcat to download the file to a server
3. Strips the headers from the response - So only the content body is left
4. Then renames the tar file, extracts it and removes it once the file has been completed.

curl, wget and lynx can not be used so please don't suggest it.

I'm not sure how long this will take, so I'm happy to be advised on that.