429 trap for crawler bots.

For each launch creates virtual pack of unique pages with amount MAX_LINKS
Each page answers 429 with probability PROBA
Each page has LINKS links to other pages in pack
After one hour each page answers 404 to avoid infinite loops

You can try it with url like this: http://gous32.ru/cgi-bin/429.py?start
Or with params: http://gous32.ru/cgi-bin/429.py?start&max_links=120&links=10&proba=0.2