ntPinger

type InputVars struct {
	Type          string // Select one of these: tcp, icmp, http, dns
	Count         int    // Default is 0 which means nonstop till interruption.
	PayLoadSize   int    // Specific the payload. ICMP default payload is 32 bytes. TCP/HTTP have no payload by default.
	Timeout       int    // default timeout is 4 seconds
	Interval      int    // Interval is the wait time between each packet send. Default is 1s.
	SourceHost    string
	DestHost      string
	DestPort      int
	Http_path     string
	Http_scheme   string
	Http_method   string
	Icmp_DF       bool // ipv4 only
	Dns_query     string
	Dns_queryType string
	Dns_Protocol  string
}

type Packet interface {
	GetStatus() bool
	GetRtt() time.Duration
	UpdateStatistics(s Statistics)
	GetType() string
	GetSendTime() time.Time
}

type PacketDNS struct {
	Type          string
	Status        bool
	Seq           int
	DestAddr      string
	DestHost      string
	SendTime      time.Time
	RTT           time.Duration
	Dns_query     string
	Dns_queryType string
	Dns_protocol  string
	Dns_response  string
	// statistics
	PacketsRecv int
	PacketsSent int
	PacketLoss  float64
	MinRtt      time.Duration
	MaxRtt      time.Duration
	AvgRtt      time.Duration
	// Status update
	AdditionalInfo string
}

type PacketHTTP struct {
	Type               string
	Status             bool
	Seq                int
	DestAddr           string
	DestHost           string
	DestPort           int
	PayLoadSize        int
	SendTime           time.Time
	RTT                time.Duration
	Http_path          string
	Http_scheme        string
	Http_response_code int
	Http_response      string
	Http_method        string
	// statistics
	PacketsRecv int
	PacketsSent int
	PacketLoss  float64
	MinRtt      time.Duration
	MaxRtt      time.Duration
	AvgRtt      time.Duration
	// Status update
	AdditionalInfo string
}

type PacketICMP struct {
	Type        string
	Status      bool
	Seq         int
	DestAddr    string
	DestHost    string
	PayLoadSize int
	SendTime    time.Time
	RTT         time.Duration
	Icmp_DF     bool
	// statistics
	PacketsRecv int
	PacketsSent int
	PacketLoss  float64
	MinRtt      time.Duration
	MaxRtt      time.Duration
	AvgRtt      time.Duration
	// Status update
	AdditionalInfo string
}

type PacketTCP struct {
	Type        string
	Status      bool
	Seq         int
	DestAddr    string
	DestHost    string
	DestPort    int
	PayLoadSize int
	SendTime    time.Time
	RTT         time.Duration
	// statistics
	PacketsRecv int
	PacketsSent int
	PacketLoss  float64
	MinRtt      time.Duration
	MaxRtt      time.Duration
	AvgRtt      time.Duration
	// Status update
	AdditionalInfo string
}

type Pinger struct {

	// ************** General Fields **********************
	// Input Vars
	InputVars InputVars

	// statistics
	Stat Statistics

	// statistics Mutex
	StatsMu sync.RWMutex

	// source IP details
	SourceAddr   string
	SourceIpAddr net.IP

	// destination IP details
	DestAddr   string
	DestIpAddr net.IP

	// OnSend is called when Pinger sends a packet (for future use only)
	OnSend func(Packet)

	// OnRecv is called when Pinger receives and processes a packet (for future use only)
	OnRecv func(Packet)

	// probeChan
	ProbeChan chan Packet

	// PingerEnd Signal (for future app interaction ONLY)
	PingerEnd bool
}

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

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

	// PacketLoss is the percentage of packets lost.
	PacketLoss float64

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

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

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