nightingale/vendor/github.com/go-ping/ping

• go-ping
• • Installation
  • Supported Operating Systems
  • • Linux
    • Windows
    • Plan 9 from Bell Labs
  • Maintainers and Getting Help:

go-ping

A simple but powerful ICMP echo (ping) library for Go, inspired by
go-fastping.

Here is a very simple example that sends and receives three packets:

pinger, err := ping.NewPinger("www.google.com")
if err != nil {
	panic(err)
}
pinger.Count = 3
err = pinger.Run() // Blocks until finished.
if err != nil {
	panic(err)
}
stats := pinger.Statistics() // get send/receive/rtt stats

Here is an example that emulates the traditional UNIX ping command:

pinger, err := ping.NewPinger("www.google.com")
if err != nil {
	panic(err)
}

// Listen for Ctrl-C.
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt)
go func() {
	for _ = range c {
		pinger.Stop()
	}
}()

pinger.OnRecv = func(pkt *ping.Packet) {
	fmt.Printf("%d bytes from %s: icmp_seq=%d time=%v\n",
		pkt.Nbytes, pkt.IPAddr, pkt.Seq, pkt.Rtt)
}

pinger.OnFinish = func(stats *ping.Statistics) {
	fmt.Printf("\n--- %s ping statistics ---\n", stats.Addr)
	fmt.Printf("%d packets transmitted, %d packets received, %v%% packet loss\n",
		stats.PacketsSent, stats.PacketsRecv, stats.PacketLoss)
	fmt.Printf("round-trip min/avg/max/stddev = %v/%v/%v/%v\n",
		stats.MinRtt, stats.AvgRtt, stats.MaxRtt, stats.StdDevRtt)
}

fmt.Printf("PING %s (%s):\n", pinger.Addr(), pinger.IPAddr())
err = pinger.Run()
if err != nil {
	panic(err)
}

It sends ICMP Echo Request packet(s) and waits for an Echo Reply in
response. If it receives a response, it calls the OnRecv callback.
When it's finished, it calls the OnFinish callback.

For a full ping example, see
cmd/ping/ping.go.

Installation

go get -u github.com/go-ping/ping

To install the native Go ping executable:

go get -u github.com/go-ping/ping/...
$GOPATH/bin/ping

Supported Operating Systems

Linux

This library attempts to send an "unprivileged" ping via UDP. On Linux,
this must be enabled with the following sysctl command:

sudo sysctl -w net.ipv4.ping_group_range="0 2147483647"

If you do not wish to do this, you can call pinger.SetPrivileged(true)
in your code and then use setcap on your binary to allow it to bind to
raw sockets (or just run it as root):

setcap cap_net_raw=+ep /path/to/your/compiled/binary

See this blog
and the Go x/net/icmp package
for more details.

Windows

You must use pinger.SetPrivileged(true), otherwise you will receive
the following error:

socket: The requested protocol has not been configured into the system, or no implementation for it exists.

Despite the method name, this should work without the need to elevate
privileges and has been tested on Windows 10. Please note that accessing
packet TTL values is not supported due to limitations in the Go
x/net/ipv4 and x/net/ipv6 packages.

Plan 9 from Bell Labs

There is no support for Plan 9. This is because the entire x/net/ipv4
and x/net/ipv6 packages are not implemented by the Go programming
language.

Maintainers and Getting Help:

This repo was originally in the personal account of
sparrc, but is now maintained by the
go-ping organization.

For support and help, you usually find us in the #go-ping channel of
Gophers Slack. See https://invite.slack.golangbridge.org/ for an invite
to the Gophers Slack org.