client.relays on a QumoClient.
place
RelaysResource.resolve.
Types: PlaceRelaysParams, RelayPlacement
resolve
host:port) a client should try, in order,
and always returns some: discovery is optional, the hostname is not.
It asks RelaysResource.place for the relays nearest the client and
ends the list with hostname. When discovery fails, answers an error or
takes longer than timeoutMs, the list is hostname alone. A session
never needs the control plane to be reachable, only DNS.
Types: ResolveRelaysParams