func validatePortRange(protocol string, fromPort, toPort int) (network.PortRange, error) {
// Validate the given range.
newRange := network.PortRange{
Protocol: strings.ToLower(protocol),
FromPort: fromPort,
ToPort: toPort,
}
if err := newRange.Validate(); err != nil {
return network.PortRange{}, err
}
return newRange, nil
}
