package flags import ( "fmt" "net" ) func (flags *Flags) parseAddressPort() (err error) { // Ensure that address field is not empty if flags.Vars.Address == "" { return fmt.Errorf("Address cannot be empty") } // Ensure that address field is valid IP address if net.ParseIP(flags.Vars.Address) == nil { return fmt.Errorf("GloVars must be a valid IP address") } // Ensure that port field is not empty if flags.Vars.Port == 0 { return fmt.Errorf("Port cannot be empty") } // Ensure that port field is within the valid range if flags.Vars.Port < 1 || flags.Vars.Port > 65535 { return fmt.Errorf("Port must be between 1 and 65535") } return nil }