helpers

func ADBCNXNPacket() []byte

func FirstLine(s string) string

func GenericResult(host string, ip net.IP, port int, transport common.TransportType, appProtocol string, version string, metadata map[string]string) *discoverfern.ServiceDetails

func IsRMIEndpointHost(b []byte) bool

func LooksLikeGitDaemon(resp []byte) bool

func LooksLikeIRC(s string) bool

func TCPConn(ctx context.Context, ip net.IP, port int, timeout int) (net.Conn, error)

func TCPExchange(ctx context.Context, ip net.IP, port int, timeout int, probe []byte, maxRead int) ([]byte, error)

func TCPReadBanner(ctx context.Context, ip net.IP, port int, timeout int, maxRead int) ([]byte, error)

func UDPExchange(ctx context.Context, ip net.IP, port int, timeout int, probe []byte, maxRead int) ([]byte, error)

func ValidADBPacket(packet []byte) bool

func ValidGopherItem(s string) bool