NewAddrBook creates a new address book.

NewReactor creates new PEX reactor.

PexChannel is a channel for PEX messages.

ErrUnsolicitedList is thrown when a peer provides a list of addresses that have not been asked for.

ErrAddressBanned is thrown when the address has been banned and therefore cannot be used.

Reactor handles PEX (peer exchange) and ensures that an adequate number of peers are connected to the switch.

ReactorConfig holds reactor specific configuration data.

AddrBook is an address book used for tracking peers so we can gossip about them to others and select peers to dial.