ComputeSenderSizes returns a slice of bytesize.ByteSize, where each elment represents a client/sender, and the value represents how much data that client/sender should send, such that a total of toSend can be sent without exceeding maxSenders.

IsExternalIP returns true if ip is an external IP (ie.

RandString returns random string of length n.

UsableIP gets a "usable" IP address from the given interface.