How to use this:

Usage: pazpar2 -h listen-port -p host-to-proxy -s targetfile

The host-to-proxy is the webserver where the user interface script
lives. It is used both for domain-name lookup and the contents of
the Host: header in rerquests that are proxied, so it's important
that the hostname is recognized by the webserver.

There are a few main target files:

test.pz: Single target, localhost:9999/Default -- use with
yaz-ztest or a local Zebra test.

bibs.pz: A small set of serious catalogs in the US and Canada.

many.pz: Obscenely many catalogs.