BindToDevice binds the socket associated with fd to device.

NewCache returns a new cache.

NewServer returns a new Server.

ReverseLookup returns a set of FQDNs for ipAddr from nameservers in /etc/resolv.conf /etc/hosts and /etc/nsswitch.conf are ignored by this function.

Cache stores dns.Msgs and their expiration time.

CacheOptions represents the cache options.

Item represents an item in the cache.

Server represents udp/tcp server and clients.

ServerOptions represents the server options.

SetOfDomains is a type for storing string-type domain names as an unsorted set var f SetOfDomains f = make(map[string]bool) Store in the set f["foo.com"] = true then to check to see if something is in the 'set': if f["foo.com"] {.