How does the number of proxies to retrive before starting work in the custom harvester?

Harvesting urls will start when either the required number of proxies are found, or there are no more proxies to test “and” there is at least 1 working proxy to work with.

So if it’s set to get 10 proxies, and after testing all proxies from all sources and only 5 are found it will still start.

If you have a list of 50 proxies and set it to 10, it will get the first 10 working and start. After X minutes it will load the entire list of proxies, test them until 10 are found then continue and it will repeat this until either there are 0 working proxies or all the keywords have been done.