func main() {
var m = flag.Int("m", traceroute.DEFAULT_MAX_HOPS, `Set the max time-to-live (max number of hops) used in outgoing probe packets (default is 64)`)
var q = flag.Int("q", 1, `Set the number of probes per "ttl" to nqueries (default is one probe).`)
flag.Parse()
host := flag.Arg(0)
options := traceroute.TracerouteOptions{}
options.SetRetries(*q - 1)
options.SetMaxHops(*m + 1)
ipAddr, err := net.ResolveIPAddr("ip", host)
if err != nil {
return
}
fmt.Printf("traceroute to %v (%v), %v hops max, %v byte packets\n", host, ipAddr, options.MaxHops(), options.PacketSize())
c := make(chan traceroute.TracerouteHop, 0)
go func() {
for {
hop, ok := <-c
if !ok {
fmt.Println()
return
}
printHop(hop)
}
}()
_, err = traceroute.Traceroute(host, &options, c)
if err != nil {
fmt.Printf("Error: ", err)
}
}
func routetrace(hostname string, nodes chan string, end chan bool) {
c := make(chan traceroute.TracerouteHop, 0)
go func() {
for {
hop, ok := <-c
if !ok {
end <- true
return
}
log.Println("hop is there")
log.Println(hop.AddressString())
nodes <- hop.AddressString()
}
}()
log.Printf("trying to reach %v servers\n", hostname)
out, err := traceroute.Traceroute(hostname, new(traceroute.TracerouteOptions), c)
if err == nil {
if len(out.Hops) == 0 {
log.Println("Expected at least one hop")
}
} else {
log.Printf("Traceroute failed due to an error: %v", err)
}
}
func main() {
var m = flag.Int("m", traceroute.DEFAULT_MAX_HOPS, `Set the max time-to-live (max number of hops) used in outgoing probe packets (default is 64)`)
var q = flag.Int("q", 1, `Set the number of probes per "ttl" to nqueries (default is one probe).`)
var d = flag.String("d", "GeoLite2-City.mmdb", `IP locate database path (default is 17monipdb.dat)`)
flag.Parse()
host := flag.Arg(0)
db, err := geoip2.Open(*d)
if err != nil {
fmt.Printf("Unvalied IP locate database (%s) with error: %s\n", d, err.Error())
fmt.Println("Please provider a vailided IP locate database (download from here: http://geolite.maxmind.com/download/geoip/database/GeoLite2-City.mmdb.gz)")
os.Exit(1)
}
defer db.Close()
options := traceroute.TracerouteOptions{}
options.SetRetries(*q - 1)
options.SetMaxHops(*m + 1)
ipAddr, err := net.ResolveIPAddr("ip", host)
if err != nil {
return
}
fmt.Printf("traceroute to %v (%v), %v hops max, %v byte packets\n", host, ipAddr, options.MaxHops(), options.PacketSize())
c := make(chan traceroute.TracerouteHop, 0)
coords := make([]Coord, 0)
lastCity := ""
go func() {
for {
hop, ok := <-c
if !ok {
fmt.Println()
return
}
coord, err := printHop(db, hop)
if err == nil && coord.City != lastCity {
lastCity = coord.City
coords = append(coords, coord)
}
}
}()
_, err = traceroute.Traceroute(host, &options, c)
if err != nil {
if err.Error() == "operation not permitted" {
fmt.Println("Operation not permitted (Maybe with sudo?)")
} else {
fmt.Printf("Error: ", err)
}
} else {
fmt.Printf("Visualize URL: %s\n", imageURL(coords))
}
}