496f96870c
This adds NumGoroutines parameter to Pinger struct to control how many goroutines should be used to send and receive packets. This parameter's default is runtime.NumCPU().
go-fastping
go-fastping is a Go language's ICMP ping library inspired by AnyEvent::FastPing Perl module to send ICMP ECHO REQUEST packets quickly. Original Perl module is available at http://search.cpan.org/~mlehmann/AnyEvent-FastPing-2.01/
It hasn't been fully implemented original functions yet.
Installation
Install and update this go package with go get -u github.com/tatsushid/go-fastping
Examples
Import this package and write
p := fastping.NewPinger()
ra, err := net.ResolveIPAddr("ip4:icmp", os.Args[1])
if err != nil {
fmt.Println(err)
os.Exit(1)
}
p.AddIPAddr(ra)
p.OnRecv = func(addr *net.IPAddr, rtt time.Duration) {
fmt.Printf("IP Addr: %s receive, RTT: %v\n", addr.String(), rtt)
}
p.OnIdle = func() {
fmt.Println("finish")
}
err = p.Run()
if err != nil {
fmt.Println(err)
}
It sends an ICMP packet and wait a response. If it receives a response, it calls "receive" callback. After that, MaxRTT time passed, it calls "idle" callback. For more detail, refer godoc and if you need more example, please see "cmd/ping/ping.go".
Caution
This package implements ICMP ping using both raw socket and UDP. If your program uses this package in raw socket mode, it needs to be run as a root user.
License
go-fastping is under MIT License. See the LICENSE file for details.