Imports github.com/emicklei/go-restful github.com/mesos/mesos-go/detector/zoo github.com/mesosphere/mesos-dns/exchanger github.com/mesosphere/mesos-dns/logging github.com/mesosphere/mesos-dns/records github.com/mesosphere/mesos-dns/util github.com/miekg/dns Standard library imports errors fmt math/rand net net/http strconv strings sync sync/atomic time