ping

type Logger interface {
	Fatalf(format string, v ...interface{})
	Errorf(format string, v ...interface{})
	Warnf(format string, v ...interface{})
	Infof(format string, v ...interface{})
	Debugf(format string, v ...interface{})
}

type NoopLogger struct {
}

type Packet struct {
	// Rtt is the round-trip time it took to ping.
	Rtt time.Duration

	// IPAddr is the address of the host being pinged.
	IPAddr *net.IPAddr

	// Addr is the string address of the host being pinged.
	Addr string

	// Nbytes is the number of bytes in the message.
	Nbytes int

	// Seq is the ICMP sequence number
	Seq int

	// TTL is the TTL on the packet
	Ttl int
}

type Pinger struct {
	// Interval is the wait time between each packet send. Default is 1s.
	Interval time.Duration

	// Timeout specifies a timeout before ping exits, regardless of how many
	// packets have been received.
	Timeout time.Duration

	// Count tells pinger to stop after sending (and receiving) Count echo
	// packets. If this option is not specified, pinger will operate until
	// interrupted.
	Count int

	// Debug runs in debug mode
	Debug bool

	// Number of packets sent
	PacketsSent int

	// Number of packets received
	PacketsRecv int

	// Number of duplicate packets received
	PacketsRecvDuplicates int

	// If true, keep a record of rtts of all received packets.
	// Set to false to avoid memory bloat for long running pings.
	RecordRtts bool

	// OnSetup is called when Pinger has finished setting up the listening socket.
	OnSetup func()

	// OnSend is called when Pinger sends a packet
	OnSend func(*Packet)

	// OnRecv is called when Pinger receives and processes a packet
	OnRecv func(*Packet)

	// OnFinish is called when Pinger exits
	OnFinish func(*Statistics)

	// OnDuplicateRecv is called when a packet is received that has already been received
	OnDuplicateRecv func(*Packet)

	// Tracker: Used to uniquely identify packets
	Tracker uint64

	// Source is the source IP address
	Source string

	Size int
	// contains filtered or unexported fields
}

type Statistics struct {
	// PacketsRecv is the number of packets received.
	PacketsRecv int

	// PacketsSent is the number of packets sent.
	PacketsSent int

	// PacketsLoss is the number of packets lost.
	PacketLoss float64

	// IPAddr is the address of the host being pinged.
	IPAddr *net.IPAddr

	// Addr is the string address of the host being pinged.
	Addr string

	// Rtts is all of the round-trip times sent via this pinger.
	Rtts []time.Duration

	// MinRtt is minimum round-trip time sent via this pinger.
	MinRtt time.Duration

	// MaxRtt is maximum round-trip time sent via this pinger.
	MaxRtt time.Duration

	// AvgRtt is average round-trip time sent via this pinger.
	AvgRtt time.Duration

	// StdDevRtt is standard deviation round-trip times sent via this pinger.
	StdDevRtt time.Duration

	// PacketsRecvDuplicates is the number of duplicate responses there were to a sent packet.
	PacketsRecvDuplicates int
}

type StdLogger struct {
	Logger *log.Logger
}