ProxiedBdPorts typedef

ProxiedBdPorts = ({int doltPort, int proxyPort})

The two loopback ports ONE fixture store's server pair listens on.

Reserved by the fixture rather than assigned by bd, which is what makes "am I talking to the server I started?" a checkable question at all.

Implementation

typedef ProxiedBdPorts = ({int proxyPort, int doltPort});